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Commit 5cb52b5e authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull perf updates from Ingo Molnar:
 "Kernel side changes:

   - Intel Knights Landing support.  (Harish Chegondi)

   - Intel Broadwell-EP uncore PMU support.  (Kan Liang)

   - Core code improvements.  (Peter Zijlstra.)

   - Event filter, LBR and PEBS fixes.  (Stephane Eranian)

   - Enable cycles:pp on Intel Atom.  (Stephane Eranian)

   - Add cycles:ppp support for Skylake.  (Andi Kleen)

   - Various x86 NMI overhead optimizations.  (Andi Kleen)

   - Intel PT enhancements.  (Takao Indoh)

   - AMD cache events fix.  (Vince Weaver)

  Tons of tooling changes:

   - Show random perf tool tips in the 'perf report' bottom line
     (Namhyung Kim)

   - perf report now defaults to --group if the perf.data file has
     grouped events, try it with:

      # perf record -e '{cycles,instructions}' -a sleep 1
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 1.093 MB perf.data (1247 samples) ]
      # perf report
      # Samples: 1K of event 'anon group { cycles, instructions }'
      # Event count (approx.): 1955219195
      #
      #       Overhead  Command     Shared Object      Symbol

         2.86%   0.22%  swapper     [kernel.kallsyms]  [k] intel_idle
         1.05%   0.33%  firefox     libxul.so          [.] js::SetObjectElement
         1.05%   0.00%  kworker/0:3 [kernel.kallsyms]  [k] gen6_ring_get_seqno
         0.88%   0.17%  chrome      chrome             [.] 0x0000000000ee27ab
         0.65%   0.86%  firefox     libxul.so          [.] js::ValueToId<(js::AllowGC)1>
         0.64%   0.23%  JS Helper   libxul.so          [.] js::SplayTree<js::jit::LiveRange*, js::jit::LiveRange>::splay
         0.62%   1.27%  firefox     libxul.so          [.] js::GetIterator
         0.61%   1.74%  firefox     libxul.so          [.] js::NativeSetProperty
         0.61%   0.31%  firefox     libxul.so          [.] js::SetPropertyByDefining

   - Introduce the 'perf stat record/report' workflow:

     Generate perf.data files from 'perf stat', to tap into the
     scripting capabilities perf has instead of defining a 'perf stat'
     specific scripting support to calculate event ratios, etc.

     Simple example:

        $ perf stat record -e cycles usleep 1

         Performance counter stats for 'usleep 1':

               1,134,996      cycles

             0.000670644 seconds time elapsed

        $ perf stat report

         Performance counter stats for '/home/acme/bin/perf stat record -e cycles usleep 1':

               1,134,996      cycles

             0.000670644 seconds time elapsed

        $

     It generates PERF_RECORD_ userspace records to store the details:

        $ perf report -D | grep PERF_RECORD
        0xf0 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 27637
        0x118 [0x12]: PERF_RECORD_CPU_MAP nr: 1 cpu: 65535
        0x12a [0x40]: PERF_RECORD_STAT_CONFIG
        0x16a [0x30]: PERF_RECORD_STAT
        -1 -1 0x19a [0x40]: PERF_RECORD_MMAP -1/0: [0xffffffff81000000(0x1f000000) @ 0xffffffff81000000]: x [kernel.kallsyms]_text
        0x1da [0x18]: PERF_RECORD_STAT_ROUND
        [acme@ssdandy linux]$

     An effort was made to make perf.data files generated like this to
     not generate cryptic messages when processed by older tools.

     The 'perf script' bits need rebasing, will go up later.

   - Make command line options always available, even when they depend
     on some feature being enabled, warning the user about use of such
     options (Wang Nan)

   - Support hw breakpoint events (mem:0xAddress) in the default output
     mode in 'perf script' (Wang Nan)

   - Fixes and improvements for supporting annotating ARM binaries,
     support ARM call and jump instructions, more work needed to have
     arch specific stuff separated into tools/perf/arch/*/annotate/
     (Russell King)

   - Add initial 'perf config' command, for now just with a --list
     command to the contents of the configuration file in use and a
     basic man page describing its format, commands for doing edits and
     detailed documentation are being reviewed and proof-read.  (Taeung
     Song)

   - Allows BPF scriptlets specify arguments to be fetched using DWARF
     info, using a prologue generated at compile/build time (He Kuang,
     Wang Nan)

   - Allow attaching BPF scriptlets to module symbols (Wang Nan)

   - Allow attaching BPF scriptlets to userspace code using uprobe (Wang
     Nan)

   - BPF programs now can specify 'perf probe' tunables via its section
     name, separating key=val values using semicolons (Wang Nan)

     Testing some of these new BPF features:

        Use case: get callchains when receiving SSL packets, filter then in the
                  kernel, at arbitrary place.

        # cat ssl.bpf.c
        #define SEC(NAME) __attribute__((section(NAME), used))

        struct pt_regs;

        SEC("func=__inet_lookup_established hnum")
        int func(struct pt_regs *ctx, int err, unsigned short port)
        {
                return err == 0 && port == 443;
        }

        char _license[] SEC("license") = "GPL";
        int  _version   SEC("version") = LINUX_VERSION_CODE;
        #
        # perf record -a -g -e ssl.bpf.c
        ^C[ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.787 MB perf.data (3 samples) ]
        # perf script | head -30
        swapper     0 [000] 58783.268118: perf_bpf_probe:func: (ffffffff816a0f60) hnum=0x1bb
           8a0f61 __inet_lookup_established (/lib/modules/4.3.0+/build/vmlinux)
           896def ip_rcv_finish (/lib/modules/4.3.0+/build/vmlinux)
           8976c2 ip_rcv (/lib/modules/4.3.0+/build/vmlinux)
           855eba __netif_receive_skb_core (/lib/modules/4.3.0+/build/vmlinux)
           8565d8 __netif_receive_skb (/lib/modules/4.3.0+/build/vmlinux)
           8572a8 process_backlog (/lib/modules/4.3.0+/build/vmlinux)
           856b11 net_rx_action (/lib/modules/4.3.0+/build/vmlinux)
           2a284b __do_softirq (/lib/modules/4.3.0+/build/vmlinux)
           2a2ba3 irq_exit (/lib/modules/4.3.0+/build/vmlinux)
           96b7a4 do_IRQ (/lib/modules/4.3.0+/build/vmlinux)
           969807 ret_from_intr (/lib/modules/4.3.0+/build/vmlinux)
           2dede5 cpu_startup_entry (/lib/modules/4.3.0+/build/vmlinux)
           95d5bc rest_init (/lib/modules/4.3.0+/build/vmlinux)
          1163ffa start_kernel ([kernel.vmlinux].init.text)
          11634d7 x86_64_start_reservations ([kernel.vmlinux].init.text)
          1163623 x86_64_start_kernel ([kernel.vmlinux].init.text)

        qemu-system-x86  9178 [003] 58785.792417: perf_bpf_probe:func: (ffffffff816a0f60) hnum=0x1bb
           8a0f61 __inet_lookup_established (/lib/modules/4.3.0+/build/vmlinux)
           896def ip_rcv_finish (/lib/modules/4.3.0+/build/vmlinux)
           8976c2 ip_rcv (/lib/modules/4.3.0+/build/vmlinux)
           855eba __netif_receive_skb_core (/lib/modules/4.3.0+/build/vmlinux)
           8565d8 __netif_receive_skb (/lib/modules/4.3.0+/build/vmlinux)
           856660 netif_receive_skb_internal (/lib/modules/4.3.0+/build/vmlinux)
           8566ec netif_receive_skb_sk (/lib/modules/4.3.0+/build/vmlinux)
             430a br_handle_frame_finish ([bridge])
             48bc br_handle_frame ([bridge])
           855f44 __netif_receive_skb_core (/lib/modules/4.3.0+/build/vmlinux)
           8565d8 __netif_receive_skb (/lib/modules/4.3.0+/build/vmlinux)
        #

   - Use 'perf probe' various options to list functions, see what
     variables can be collected at any given point, experiment first
     collecting without a filter, then filter, use it together with
     'perf trace', 'perf top', with or without callchains, if it
     explodes, please tell us!

   - Introduce a new callchain mode: "folded", that will list per line
     representations of all callchains for a give histogram entry,
     facilitating 'perf report' output processing by other tools, such
     as Brendan Gregg's flamegraph tools (Namhyung Kim)

     E.g:

        # perf report | grep -v ^# | head
           18.37%     0.00%  swapper  [kernel.kallsyms]   [k] cpu_startup_entry
                           |
                           ---cpu_startup_entry
                              |
                              |--12.07%--start_secondary
                              |
                               --6.30%--rest_init
                                         start_kernel
                                         x86_64_start_reservations
                                         x86_64_start_kernel
         #

     Becomes, in "folded" mode:

        # perf report -g folded | grep -v ^# | head -5
            18.37%     0.00%  swapper [kernel.kallsyms]   [k] cpu_startup_entry
          12.07% cpu_startup_entry;start_secondary
           6.30% cpu_startup_entry;rest_init;start_kernel;x86_64_start_reservations;x86_64_start_kernel
            16.90%     0.00%  swapper [kernel.kallsyms]   [k] call_cpuidle
          11.23% call_cpuidle;cpu_startup_entry;start_secondary
           5.67% call_cpuidle;cpu_startup_entry;rest_init;start_kernel;x86_64_start_reservations;x86_64_start_kernel
            16.90%     0.00%  swapper [kernel.kallsyms]   [k] cpuidle_enter
          11.23% cpuidle_enter;call_cpuidle;cpu_startup_entry;start_secondary
           5.67% cpuidle_enter;call_cpuidle;cpu_startup_entry;rest_init;start_kernel;x86_64_start_reservations;x86_64_start_kernel
            15.12%     0.00%  swapper [kernel.kallsyms]   [k] cpuidle_enter_state
         #

     The user can also select one of "count", "period" or "percent" as
     the first column.

  ... and lots of infrastructure enhancements, plus fixes and other
  changes, features I failed to list - see the shortlog and the git log
  for details"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (271 commits)
  perf evlist: Add --trace-fields option to show trace fields
  perf record: Store data mmaps for dwarf unwind
  perf libdw: Check for mmaps also in MAP__VARIABLE tree
  perf unwind: Check for mmaps also in MAP__VARIABLE tree
  perf unwind: Use find_map function in access_dso_mem
  perf evlist: Remove perf_evlist__(enable|disable)_event functions
  perf evlist: Make perf_evlist__open() open evsels with their cpus and threads (like perf record does)
  perf report: Show random usage tip on the help line
  perf hists: Export a couple of hist functions
  perf diff: Use perf_hpp__register_sort_field interface
  perf tools: Add overhead/overhead_children keys defaults via string
  perf tools: Remove list entry from struct sort_entry
  perf tools: Include all tools/lib directory for tags/cscope/TAGS targets
  perf script: Align event name properly
  perf tools: Add missing headers in perf's MANIFEST
  perf tools: Do not show trace command if it's not compiled in
  perf report: Change default to use event group view
  perf top: Decay periods in callchains
  tools lib: Move bitmap.[ch] from tools/perf/ to tools/{lib,include}/
  tools lib: Sync tools/lib/find_bit.c with the kernel
  ...
parents 24af98c4 3eb9ede2
Expand all Hide whitespace changes
Inline Side-by-side
Showing with 9147 additions and 1639 deletions
Documentation/trace/events-msr.txt 0 → 100644
View file @ 5cb52b5e
The x86 kernel supports tracing most MSR (Model Specific Register) accesses.
To see the definition of the MSRs on Intel systems please see the SDM
at http://www.intel.com/sdm (Volume 3)
Available trace points:
/sys/kernel/debug/tracing/events/msr/
Trace MSR reads
read_msr
msr: MSR number
val: Value written
failed: 1 if the access failed, otherwise 0
Trace MSR writes
write_msr
msr: MSR number
val: Value written
failed: 1 if the access failed, otherwise 0
Trace RDPMC in kernel
rdpmc
The trace data can be post processed with the postprocess/decode_msr.py script
cat /sys/kernel/debug/tracing/trace | decode_msr.py /usr/src/linux/include/asm/msr-index.h
to add symbolic MSR names.
Documentation/trace/postprocess/decode_msr.py 0 → 100644
View file @ 5cb52b5e
#!/usr/bin/python
# add symbolic names to read_msr / write_msr in trace
# decode_msr msr-index.h < trace
import sys
import re
msrs = dict()
with open(sys.argv[1] if len(sys.argv) > 1 else "msr-index.h", "r") as f:
for j in f:
m = re.match(r'#define (MSR_\w+)\s+(0x[0-9a-fA-F]+)', j)
if m:
msrs[int(m.group(2), 16)] = m.group(1)
extra_ranges = (
( "MSR_LASTBRANCH_%d_FROM_IP", 0x680, 0x69F ),
( "MSR_LASTBRANCH_%d_TO_IP", 0x6C0, 0x6DF ),
( "LBR_INFO_%d", 0xdc0, 0xddf ),
)
for j in sys.stdin:
m = re.search(r'(read|write)_msr:\s+([0-9a-f]+)', j)
if m:
r = None
num = int(m.group(2), 16)
if num in msrs:
r = msrs[num]
else:
for er in extra_ranges:
if er[1] <= num <= er[2]:
r = er[0] % (num - er[1],)
break
if r:
j = j.replace(" " + m.group(2), " " + r + "(" + m.group(2) + ")")
print j,
arch/x86/include/asm/atomic.h
View file @ 5cb52b5e
......@@ -3,7 +3,6 @@
#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/processor.h>
#include <asm/alternative.h>
#include <asm/cmpxchg.h>
#include <asm/rmwcc.h>
......
arch/x86/include/asm/atomic64_32.h
View file @ 5cb52b5e
......@@ -3,7 +3,6 @@
#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/processor.h>
//#include <asm/cmpxchg.h>
/* An 64bit atomic type */
......
arch/x86/include/asm/intel_pt.h 0 → 100644
View file @ 5cb52b5e
#ifndef _ASM_X86_INTEL_PT_H
#define _ASM_X86_INTEL_PT_H
#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL)
void cpu_emergency_stop_pt(void);
#else
static inline void cpu_emergency_stop_pt(void) {}
#endif
#endif /* _ASM_X86_INTEL_PT_H */
arch/x86/include/asm/msr-trace.h 0 → 100644
View file @ 5cb52b5e
#undef TRACE_SYSTEM
#define TRACE_SYSTEM msr
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE msr-trace
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH asm/
#if !defined(_TRACE_MSR_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_MSR_H
#include <linux/tracepoint.h>
/*
* Tracing for x86 model specific registers. Directly maps to the
* RDMSR/WRMSR instructions.
*/
DECLARE_EVENT_CLASS(msr_trace_class,
TP_PROTO(unsigned msr, u64 val, int failed),
TP_ARGS(msr, val, failed),
TP_STRUCT__entry(
__field( unsigned, msr )
__field( u64, val )
__field( int, failed )
),
TP_fast_assign(
__entry->msr = msr;
__entry->val = val;
__entry->failed = failed;
),
TP_printk("%x, value %llx%s",
__entry->msr,
__entry->val,
__entry->failed ? " #GP" : "")
);
DEFINE_EVENT(msr_trace_class, read_msr,
TP_PROTO(unsigned msr, u64 val, int failed),
TP_ARGS(msr, val, failed)
);
DEFINE_EVENT(msr_trace_class, write_msr,
TP_PROTO(unsigned msr, u64 val, int failed),
TP_ARGS(msr, val, failed)
);
DEFINE_EVENT(msr_trace_class, rdpmc,
TP_PROTO(unsigned msr, u64 val, int failed),
TP_ARGS(msr, val, failed)
);
#endif /* _TRACE_MSR_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
arch/x86/include/asm/msr.h
View file @ 5cb52b5e
......@@ -57,11 +57,34 @@ static inline unsigned long long native_read_tscp(unsigned int *aux)
#define EAX_EDX_RET(val, low, high) "=A" (val)
#endif
#ifdef CONFIG_TRACEPOINTS
/*
* Be very careful with includes. This header is prone to include loops.
*/
#include <asm/atomic.h>
#include <linux/tracepoint-defs.h>
extern struct tracepoint __tracepoint_read_msr;
extern struct tracepoint __tracepoint_write_msr;
extern struct tracepoint __tracepoint_rdpmc;
#define msr_tracepoint_active(t) static_key_false(&(t).key)
extern void do_trace_write_msr(unsigned msr, u64 val, int failed);
extern void do_trace_read_msr(unsigned msr, u64 val, int failed);
extern void do_trace_rdpmc(unsigned msr, u64 val, int failed);
#else
#define msr_tracepoint_active(t) false
static inline void do_trace_write_msr(unsigned msr, u64 val, int failed) {}
static inline void do_trace_read_msr(unsigned msr, u64 val, int failed) {}
static inline void do_trace_rdpmc(unsigned msr, u64 val, int failed) {}
#endif
static inline unsigned long long native_read_msr(unsigned int msr)
{
DECLARE_ARGS(val, low, high);
asm volatile("rdmsr" : EAX_EDX_RET(val, low, high) : "c" (msr));
if (msr_tracepoint_active(__tracepoint_read_msr))
do_trace_read_msr(msr, EAX_EDX_VAL(val, low, high), 0);
return EAX_EDX_VAL(val, low, high);
}
......@@ -78,6 +101,8 @@ static inline unsigned long long native_read_msr_safe(unsigned int msr,
_ASM_EXTABLE(2b, 3b)
: [err] "=r" (*err), EAX_EDX_RET(val, low, high)
: "c" (msr), [fault] "i" (-EIO));
if (msr_tracepoint_active(__tracepoint_read_msr))
do_trace_read_msr(msr, EAX_EDX_VAL(val, low, high), *err);
return EAX_EDX_VAL(val, low, high);
}
......@@ -85,6 +110,8 @@ static inline void native_write_msr(unsigned int msr,
unsigned low, unsigned high)
{
asm volatile("wrmsr" : : "c" (msr), "a"(low), "d" (high) : "memory");
if (msr_tracepoint_active(__tracepoint_read_msr))
do_trace_write_msr(msr, ((u64)high << 32 | low), 0);
}
/* Can be uninlined because referenced by paravirt */
......@@ -102,6 +129,8 @@ notrace static inline int native_write_msr_safe(unsigned int msr,
: "c" (msr), "0" (low), "d" (high),
[fault] "i" (-EIO)
: "memory");
if (msr_tracepoint_active(__tracepoint_read_msr))
do_trace_write_msr(msr, ((u64)high << 32 | low), err);
return err;
}
......@@ -160,6 +189,8 @@ static inline unsigned long long native_read_pmc(int counter)
DECLARE_ARGS(val, low, high);
asm volatile("rdpmc" : EAX_EDX_RET(val, low, high) : "c" (counter));
if (msr_tracepoint_active(__tracepoint_rdpmc))
do_trace_rdpmc(counter, EAX_EDX_VAL(val, low, high), 0);
return EAX_EDX_VAL(val, low, high);
}
......
arch/x86/include/asm/uaccess.h
View file @ 5cb52b5e
......@@ -745,5 +745,14 @@ copy_to_user(void __user *to, const void *from, unsigned long n)
#undef __copy_from_user_overflow
#undef __copy_to_user_overflow
/*
* We rely on the nested NMI work to allow atomic faults from the NMI path; the
* nested NMI paths are careful to preserve CR2.
*
* Caller must use pagefault_enable/disable, or run in interrupt context,
* and also do a uaccess_ok() check
*/
#define __copy_from_user_nmi __copy_from_user_inatomic
#endif /* _ASM_X86_UACCESS_H */
arch/x86/kernel/cpu/perf_event.c
View file @ 5cb52b5e
......@@ -482,6 +482,9 @@ int x86_pmu_hw_config(struct perf_event *event)
/* Support for IP fixup */
if (x86_pmu.lbr_nr || x86_pmu.intel_cap.pebs_format >= 2)
precise++;
if (x86_pmu.pebs_prec_dist)
precise++;
}
if (event->attr.precise_ip > precise)
......@@ -1531,6 +1534,7 @@ static void __init filter_events(struct attribute **attrs)
{
struct device_attribute *d;
struct perf_pmu_events_attr *pmu_attr;
int offset = 0;
int i, j;
for (i = 0; attrs[i]; i++) {
......@@ -1539,7 +1543,7 @@ static void __init filter_events(struct attribute **attrs)
/* str trumps id */
if (pmu_attr->event_str)
continue;
if (x86_pmu.event_map(i))
if (x86_pmu.event_map(i + offset))
continue;
for (j = i; attrs[j]; j++)
......@@ -1547,6 +1551,14 @@ static void __init filter_events(struct attribute **attrs)
/* Check the shifted attr. */
i--;
/*
* event_map() is index based, the attrs array is organized
* by increasing event index. If we shift the events, then
* we need to compensate for the event_map(), otherwise
* we are looking up the wrong event in the map
*/
offset++;
}
}
......@@ -2250,12 +2262,19 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry)
ss_base = get_segment_base(regs->ss);
fp = compat_ptr(ss_base + regs->bp);
pagefault_disable();
while (entry->nr < PERF_MAX_STACK_DEPTH) {
unsigned long bytes;
frame.next_frame = 0;
frame.return_address = 0;
bytes = copy_from_user_nmi(&frame, fp, sizeof(frame));
if (!access_ok(VERIFY_READ, fp, 8))
break;
bytes = __copy_from_user_nmi(&frame.next_frame, fp, 4);
if (bytes != 0)
break;
bytes = __copy_from_user_nmi(&frame.return_address, fp+4, 4);
if (bytes != 0)
break;
......@@ -2265,6 +2284,7 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry)
perf_callchain_store(entry, cs_base + frame.return_address);
fp = compat_ptr(ss_base + frame.next_frame);
}
pagefault_enable();
return 1;
}
#else
......@@ -2302,12 +2322,19 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
if (perf_callchain_user32(regs, entry))
return;
pagefault_disable();
while (entry->nr < PERF_MAX_STACK_DEPTH) {
unsigned long bytes;
frame.next_frame = NULL;
frame.return_address = 0;
bytes = copy_from_user_nmi(&frame, fp, sizeof(frame));
if (!access_ok(VERIFY_READ, fp, 16))
break;
bytes = __copy_from_user_nmi(&frame.next_frame, fp, 8);
if (bytes != 0)
break;
bytes = __copy_from_user_nmi(&frame.return_address, fp+8, 8);
if (bytes != 0)
break;
......@@ -2315,8 +2342,9 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
break;
perf_callchain_store(entry, frame.return_address);
fp = frame.next_frame;
fp = (void __user *)frame.next_frame;
}
pagefault_enable();
}
/*
......
arch/x86/kernel/cpu/perf_event.h
View file @ 5cb52b5e
......@@ -14,17 +14,7 @@
#include <linux/perf_event.h>
#if 0
#undef wrmsrl
#define wrmsrl(msr, val) \
do { \
unsigned int _msr = (msr); \
u64 _val = (val); \
trace_printk("wrmsrl(%x, %Lx)\n", (unsigned int)(_msr), \
(unsigned long long)(_val)); \
native_write_msr((_msr), (u32)(_val), (u32)(_val >> 32)); \
} while (0)
#endif
/* To enable MSR tracing please use the generic trace points. */
/*
* | NHM/WSM | SNB |
......@@ -318,6 +308,10 @@ struct cpu_hw_events {
#define INTEL_UEVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
/* Constraint on specific umask bit only + event */
#define INTEL_UBIT_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT|(c))
/* Like UEVENT_CONSTRAINT, but match flags too */
#define INTEL_FLAGS_UEVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
......@@ -589,7 +583,8 @@ struct x86_pmu {
bts_active :1,
pebs :1,
pebs_active :1,
pebs_broken :1;
pebs_broken :1,
pebs_prec_dist :1;
int pebs_record_size;
void (*drain_pebs)(struct pt_regs *regs);
struct event_constraint *pebs_constraints;
......@@ -907,6 +902,8 @@ void intel_pmu_lbr_init_hsw(void);
void intel_pmu_lbr_init_skl(void);
void intel_pmu_lbr_init_knl(void);
int intel_pmu_setup_lbr_filter(struct perf_event *event);
void intel_pt_interrupt(void);
......
arch/x86/kernel/cpu/perf_event_amd.c
View file @ 5cb52b5e
......@@ -18,7 +18,7 @@ static __initconst const u64 amd_hw_cache_event_ids
[ C(RESULT_MISS) ] = 0x0141, /* Data Cache Misses */
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0x0142, /* Data Cache Refills :system */
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = 0,
},
[ C(OP_PREFETCH) ] = {
......
arch/x86/kernel/cpu/perf_event_intel.c
View file @ 5cb52b5e
......@@ -185,6 +185,14 @@ struct event_constraint intel_skl_event_constraints[] = {
EVENT_CONSTRAINT_END
};
static struct extra_reg intel_knl_extra_regs[] __read_mostly = {
INTEL_UEVENT_EXTRA_REG(0x01b7,
MSR_OFFCORE_RSP_0, 0x7f9ffbffffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x02b7,
MSR_OFFCORE_RSP_1, 0x3f9ffbffffull, RSP_1),
EVENT_EXTRA_END
};
static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0),
......@@ -255,7 +263,7 @@ struct event_constraint intel_bdw_event_constraints[] = {
FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
INTEL_UEVENT_CONSTRAINT(0x148, 0x4), /* L1D_PEND_MISS.PENDING */
INTEL_UEVENT_CONSTRAINT(0x8a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_MISS */
INTEL_UBIT_EVENT_CONSTRAINT(0x8a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_MISS */
EVENT_CONSTRAINT_END
};
......@@ -1457,6 +1465,42 @@ static __initconst const u64 slm_hw_cache_event_ids
},
};
#define KNL_OT_L2_HITE BIT_ULL(19) /* Other Tile L2 Hit */
#define KNL_OT_L2_HITF BIT_ULL(20) /* Other Tile L2 Hit */
#define KNL_MCDRAM_LOCAL BIT_ULL(21)
#define KNL_MCDRAM_FAR BIT_ULL(22)
#define KNL_DDR_LOCAL BIT_ULL(23)
#define KNL_DDR_FAR BIT_ULL(24)
#define KNL_DRAM_ANY (KNL_MCDRAM_LOCAL | KNL_MCDRAM_FAR | \
KNL_DDR_LOCAL | KNL_DDR_FAR)
#define KNL_L2_READ SLM_DMND_READ
#define KNL_L2_WRITE SLM_DMND_WRITE
#define KNL_L2_PREFETCH SLM_DMND_PREFETCH
#define KNL_L2_ACCESS SLM_LLC_ACCESS
#define KNL_L2_MISS (KNL_OT_L2_HITE | KNL_OT_L2_HITF | \
KNL_DRAM_ANY | SNB_SNP_ANY | \
SNB_NON_DRAM)
static __initconst const u64 knl_hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = KNL_L2_READ | KNL_L2_ACCESS,
[C(RESULT_MISS)] = 0,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = KNL_L2_WRITE | KNL_L2_ACCESS,
[C(RESULT_MISS)] = KNL_L2_WRITE | KNL_L2_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = KNL_L2_PREFETCH | KNL_L2_ACCESS,
[C(RESULT_MISS)] = KNL_L2_PREFETCH | KNL_L2_MISS,
},
},
};
/*
* Use from PMIs where the LBRs are already disabled.
*/
......@@ -2475,6 +2519,44 @@ static void intel_pebs_aliases_snb(struct perf_event *event)
}
}
static void intel_pebs_aliases_precdist(struct perf_event *event)
{
if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
/*
* Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
* (0x003c) so that we can use it with PEBS.
*
* The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
* PEBS capable. However we can use INST_RETIRED.PREC_DIST
* (0x01c0), which is a PEBS capable event, to get the same
* count.
*
* The PREC_DIST event has special support to minimize sample
* shadowing effects. One drawback is that it can be
* only programmed on counter 1, but that seems like an
* acceptable trade off.
*/
u64 alt_config = X86_CONFIG(.event=0xc0, .umask=0x01, .inv=1, .cmask=16);
alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
event->hw.config = alt_config;
}
}
static void intel_pebs_aliases_ivb(struct perf_event *event)
{
if (event->attr.precise_ip < 3)
return intel_pebs_aliases_snb(event);
return intel_pebs_aliases_precdist(event);
}
static void intel_pebs_aliases_skl(struct perf_event *event)
{
if (event->attr.precise_ip < 3)
return intel_pebs_aliases_core2(event);
return intel_pebs_aliases_precdist(event);
}
static unsigned long intel_pmu_free_running_flags(struct perf_event *event)
{
unsigned long flags = x86_pmu.free_running_flags;
......@@ -3332,6 +3414,7 @@ __init int intel_pmu_init(void)
x86_pmu.event_constraints = intel_gen_event_constraints;
x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_core2;
pr_cont("Atom events, ");
break;
......@@ -3431,7 +3514,8 @@ __init int intel_pmu_init(void)
x86_pmu.event_constraints = intel_ivb_event_constraints;
x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
x86_pmu.pebs_prec_dist = true;
if (boot_cpu_data.x86_model == 62)
x86_pmu.extra_regs = intel_snbep_extra_regs;
else
......@@ -3464,7 +3548,8 @@ __init int intel_pmu_init(void)
x86_pmu.event_constraints = intel_hsw_event_constraints;
x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
x86_pmu.extra_regs = intel_snbep_extra_regs;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
x86_pmu.pebs_prec_dist = true;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
......@@ -3499,7 +3584,8 @@ __init int intel_pmu_init(void)
x86_pmu.event_constraints = intel_bdw_event_constraints;
x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
x86_pmu.extra_regs = intel_snbep_extra_regs;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
x86_pmu.pebs_prec_dist = true;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
......@@ -3511,6 +3597,24 @@ __init int intel_pmu_init(void)
pr_cont("Broadwell events, ");
break;
case 87: /* Knights Landing Xeon Phi */
memcpy(hw_cache_event_ids,
slm_hw_cache_event_ids, sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs,
knl_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
intel_pmu_lbr_init_knl();
x86_pmu.event_constraints = intel_slm_event_constraints;
x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
x86_pmu.extra_regs = intel_knl_extra_regs;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
pr_cont("Knights Landing events, ");
break;
case 78: /* 14nm Skylake Mobile */
case 94: /* 14nm Skylake Desktop */
x86_pmu.late_ack = true;
......@@ -3521,7 +3625,8 @@ __init int intel_pmu_init(void)
x86_pmu.event_constraints = intel_skl_event_constraints;
x86_pmu.pebs_constraints = intel_skl_pebs_event_constraints;
x86_pmu.extra_regs = intel_skl_extra_regs;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
x86_pmu.pebs_aliases = intel_pebs_aliases_skl;
x86_pmu.pebs_prec_dist = true;
/* all extra regs are per-cpu when HT is on */
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
......
arch/x86/kernel/cpu/perf_event_intel_ds.c
View file @ 5cb52b5e
......@@ -620,6 +620,8 @@ struct event_constraint intel_atom_pebs_event_constraints[] = {
INTEL_FLAGS_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED.* */
/* INST_RETIRED.ANY_P, inv=1, cmask=16 (cycles:p). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x01),
/* Allow all events as PEBS with no flags */
INTEL_ALL_EVENT_CONSTRAINT(0, 0x1),
EVENT_CONSTRAINT_END
};
......@@ -686,6 +688,8 @@ struct event_constraint intel_ivb_pebs_event_constraints[] = {
INTEL_PST_CONSTRAINT(0x02cd, 0x8), /* MEM_TRANS_RETIRED.PRECISE_STORES */
/* UOPS_RETIRED.ALL, inv=1, cmask=16 (cycles:p). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108001c2, 0xf),
/* INST_RETIRED.PREC_DIST, inv=1, cmask=16 (cycles:ppp). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108001c0, 0x2),
INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOP_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
......@@ -700,6 +704,8 @@ struct event_constraint intel_hsw_pebs_event_constraints[] = {
INTEL_PLD_CONSTRAINT(0x01cd, 0xf), /* MEM_TRANS_RETIRED.* */
/* UOPS_RETIRED.ALL, inv=1, cmask=16 (cycles:p). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108001c2, 0xf),
/* INST_RETIRED.PREC_DIST, inv=1, cmask=16 (cycles:ppp). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108001c0, 0x2),
INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_NA(0x01c2, 0xf), /* UOPS_RETIRED.ALL */
INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XLD(0x11d0, 0xf), /* MEM_UOPS_RETIRED.STLB_MISS_LOADS */
INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XLD(0x21d0, 0xf), /* MEM_UOPS_RETIRED.LOCK_LOADS */
......@@ -718,9 +724,10 @@ struct event_constraint intel_hsw_pebs_event_constraints[] = {
struct event_constraint intel_skl_pebs_event_constraints[] = {
INTEL_FLAGS_UEVENT_CONSTRAINT(0x1c0, 0x2), /* INST_RETIRED.PREC_DIST */
INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_NA(0x01c2, 0xf), /* UOPS_RETIRED.ALL */
/* UOPS_RETIRED.ALL, inv=1, cmask=16 (cycles:p). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108001c2, 0xf),
/* INST_RETIRED.PREC_DIST, inv=1, cmask=16 (cycles:ppp). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108001c0, 0x2),
/* INST_RETIRED.TOTAL_CYCLES_PS (inv=1, cmask=16) (cycles:p). */
INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x0f),
INTEL_PLD_CONSTRAINT(0x1cd, 0xf), /* MEM_TRANS_RETIRED.* */
INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(0x11d0, 0xf), /* MEM_INST_RETIRED.STLB_MISS_LOADS */
INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(0x12d0, 0xf), /* MEM_INST_RETIRED.STLB_MISS_STORES */
......@@ -1101,6 +1108,13 @@ get_next_pebs_record_by_bit(void *base, void *top, int bit)
void *at;
u64 pebs_status;
/*
* fmt0 does not have a status bitfield (does not use
* perf_record_nhm format)
*/
if (x86_pmu.intel_cap.pebs_format < 1)
return base;
if (base == NULL)
return NULL;
......@@ -1186,7 +1200,7 @@ static void intel_pmu_drain_pebs_core(struct pt_regs *iregs)
if (!event->attr.precise_ip)
return;
n = (top - at) / x86_pmu.pebs_record_size;
n = top - at;
if (n <= 0)
return;
......@@ -1230,12 +1244,21 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs *iregs)
pebs_status = p->status & cpuc->pebs_enabled;
pebs_status &= (1ULL << x86_pmu.max_pebs_events) - 1;
/*
* On some CPUs the PEBS status can be zero when PEBS is
* racing with clearing of GLOBAL_STATUS.
*
* Normally we would drop that record, but in the
* case when there is only a single active PEBS event
* we can assume it's for that event.
*/
if (!pebs_status && cpuc->pebs_enabled &&
!(cpuc->pebs_enabled & (cpuc->pebs_enabled-1)))
pebs_status = cpuc->pebs_enabled;
bit = find_first_bit((unsigned long *)&pebs_status,
x86_pmu.max_pebs_events);
if (WARN(bit >= x86_pmu.max_pebs_events,
"PEBS record without PEBS event! status=%Lx pebs_enabled=%Lx active_mask=%Lx",
(unsigned long long)p->status, (unsigned long long)cpuc->pebs_enabled,
*(unsigned long long *)cpuc->active_mask))
if (bit >= x86_pmu.max_pebs_events)
continue;
/*
......
arch/x86/kernel/cpu/perf_event_intel_lbr.c
View file @ 5cb52b5e
......@@ -42,6 +42,13 @@ static enum {
#define LBR_FAR_BIT 8 /* do not capture far branches */
#define LBR_CALL_STACK_BIT 9 /* enable call stack */
/*
* Following bit only exists in Linux; we mask it out before writing it to
* the actual MSR. But it helps the constraint perf code to understand
* that this is a separate configuration.
*/
#define LBR_NO_INFO_BIT 63 /* don't read LBR_INFO. */
#define LBR_KERNEL (1 << LBR_KERNEL_BIT)
#define LBR_USER (1 << LBR_USER_BIT)
#define LBR_JCC (1 << LBR_JCC_BIT)
......@@ -52,6 +59,7 @@ static enum {
#define LBR_IND_JMP (1 << LBR_IND_JMP_BIT)
#define LBR_FAR (1 << LBR_FAR_BIT)
#define LBR_CALL_STACK (1 << LBR_CALL_STACK_BIT)
#define LBR_NO_INFO (1ULL << LBR_NO_INFO_BIT)
#define LBR_PLM (LBR_KERNEL | LBR_USER)
......@@ -152,8 +160,8 @@ static void __intel_pmu_lbr_enable(bool pmi)
* did not change.
*/
if (cpuc->lbr_sel)
lbr_select = cpuc->lbr_sel->config;
if (!pmi)
lbr_select = cpuc->lbr_sel->config & x86_pmu.lbr_sel_mask;
if (!pmi && cpuc->lbr_sel)
wrmsrl(MSR_LBR_SELECT, lbr_select);
rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctl);
......@@ -422,6 +430,7 @@ static void intel_pmu_lbr_read_32(struct cpu_hw_events *cpuc)
*/
static void intel_pmu_lbr_read_64(struct cpu_hw_events *cpuc)
{
bool need_info = false;
unsigned long mask = x86_pmu.lbr_nr - 1;
int lbr_format = x86_pmu.intel_cap.lbr_format;
u64 tos = intel_pmu_lbr_tos();
......@@ -429,8 +438,11 @@ static void intel_pmu_lbr_read_64(struct cpu_hw_events *cpuc)
int out = 0;
int num = x86_pmu.lbr_nr;
if (cpuc->lbr_sel->config & LBR_CALL_STACK)
num = tos;
if (cpuc->lbr_sel) {
need_info = !(cpuc->lbr_sel->config & LBR_NO_INFO);
if (cpuc->lbr_sel->config & LBR_CALL_STACK)
num = tos;
}
for (i = 0; i < num; i++) {
unsigned long lbr_idx = (tos - i) & mask;
......@@ -442,7 +454,7 @@ static void intel_pmu_lbr_read_64(struct cpu_hw_events *cpuc)
rdmsrl(x86_pmu.lbr_from + lbr_idx, from);
rdmsrl(x86_pmu.lbr_to + lbr_idx, to);
if (lbr_format == LBR_FORMAT_INFO) {
if (lbr_format == LBR_FORMAT_INFO && need_info) {
u64 info;
rdmsrl(MSR_LBR_INFO_0 + lbr_idx, info);
......@@ -590,6 +602,7 @@ static int intel_pmu_setup_hw_lbr_filter(struct perf_event *event)
if (v != LBR_IGN)
mask |= v;
}
reg = &event->hw.branch_reg;
reg->idx = EXTRA_REG_LBR;
......@@ -600,6 +613,11 @@ static int intel_pmu_setup_hw_lbr_filter(struct perf_event *event)
*/
reg->config = mask ^ x86_pmu.lbr_sel_mask;
if ((br_type & PERF_SAMPLE_BRANCH_NO_CYCLES) &&
(br_type & PERF_SAMPLE_BRANCH_NO_FLAGS) &&
(x86_pmu.intel_cap.lbr_format == LBR_FORMAT_INFO))
reg->config |= LBR_NO_INFO;
return 0;
}
......@@ -1028,3 +1046,17 @@ void __init intel_pmu_lbr_init_atom(void)
*/
pr_cont("8-deep LBR, ");
}
/* Knights Landing */
void intel_pmu_lbr_init_knl(void)
{
x86_pmu.lbr_nr = 8;
x86_pmu.lbr_tos = MSR_LBR_TOS;
x86_pmu.lbr_from = MSR_LBR_NHM_FROM;
x86_pmu.lbr_to = MSR_LBR_NHM_TO;
x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
x86_pmu.lbr_sel_map = snb_lbr_sel_map;
pr_cont("8-deep LBR, ");
}
arch/x86/kernel/cpu/perf_event_intel_pt.c
View file @ 5cb52b5e
......@@ -27,6 +27,7 @@
#include <asm/perf_event.h>
#include <asm/insn.h>
#include <asm/io.h>
#include <asm/intel_pt.h>
#include "perf_event.h"
#include "intel_pt.h"
......@@ -1122,6 +1123,14 @@ static int pt_event_init(struct perf_event *event)
return 0;
}
void cpu_emergency_stop_pt(void)
{
struct pt *pt = this_cpu_ptr(&pt_ctx);
if (pt->handle.event)
pt_event_stop(pt->handle.event, PERF_EF_UPDATE);
}
static __init int pt_init(void)
{
int ret, cpu, prior_warn = 0;
......
arch/x86/kernel/cpu/perf_event_intel_rapl.c
View file @ 5cb52b5e
......@@ -63,7 +63,7 @@
#define INTEL_RAPL_PP1 0x4 /* pseudo-encoding */
#define NR_RAPL_DOMAINS 0x4
static const char *rapl_domain_names[NR_RAPL_DOMAINS] __initconst = {
static const char *const rapl_domain_names[NR_RAPL_DOMAINS] __initconst = {
"pp0-core",
"package",
"dram",
......@@ -109,11 +109,11 @@ static struct kobj_attribute format_attr_##_var = \
#define RAPL_CNTR_WIDTH 32 /* 32-bit rapl counters */
#define RAPL_EVENT_ATTR_STR(_name, v, str) \
static struct perf_pmu_events_attr event_attr_##v = { \
.attr = __ATTR(_name, 0444, rapl_sysfs_show, NULL), \
.id = 0, \
.event_str = str, \
#define RAPL_EVENT_ATTR_STR(_name, v, str) \
static struct perf_pmu_events_attr event_attr_##v = { \
.attr = __ATTR(_name, 0444, perf_event_sysfs_show, NULL), \
.id = 0, \
.event_str = str, \
};
struct rapl_pmu {
......@@ -405,19 +405,6 @@ static struct attribute_group rapl_pmu_attr_group = {
.attrs = rapl_pmu_attrs,
};
static ssize_t rapl_sysfs_show(struct device *dev,
struct device_attribute *attr,
char *page)
{
struct perf_pmu_events_attr *pmu_attr = \
container_of(attr, struct perf_pmu_events_attr, attr);
if (pmu_attr->event_str)
return sprintf(page, "%s", pmu_attr->event_str);
return 0;
}
RAPL_EVENT_ATTR_STR(energy-cores, rapl_cores, "event=0x01");
RAPL_EVENT_ATTR_STR(energy-pkg , rapl_pkg, "event=0x02");
RAPL_EVENT_ATTR_STR(energy-ram , rapl_ram, "event=0x03");
......
arch/x86/kernel/cpu/perf_event_intel_uncore.c
View file @ 5cb52b5e
......@@ -884,6 +884,15 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id
* each box has a different function id.
*/
pmu = &type->pmus[UNCORE_PCI_DEV_IDX(id->driver_data)];
/* Knights Landing uses a common PCI device ID for multiple instances of
* an uncore PMU device type. There is only one entry per device type in
* the knl_uncore_pci_ids table inspite of multiple devices present for
* some device types. Hence PCI device idx would be 0 for all devices.
* So increment pmu pointer to point to an unused array element.
*/
if (boot_cpu_data.x86_model == 87)
while (pmu->func_id >= 0)
pmu++;
if (pmu->func_id < 0)
pmu->func_id = pdev->devfn;
else
......@@ -966,6 +975,7 @@ static int __init uncore_pci_init(void)
case 63: /* Haswell-EP */
ret = hswep_uncore_pci_init();
break;
case 79: /* BDX-EP */
case 86: /* BDX-DE */
ret = bdx_uncore_pci_init();
break;
......@@ -982,6 +992,9 @@ static int __init uncore_pci_init(void)
case 61: /* Broadwell */
ret = bdw_uncore_pci_init();
break;
case 87: /* Knights Landing */
ret = knl_uncore_pci_init();
break;
default:
return 0;
}
......@@ -1287,9 +1300,13 @@ static int __init uncore_cpu_init(void)
case 63: /* Haswell-EP */
hswep_uncore_cpu_init();
break;
case 79: /* BDX-EP */
case 86: /* BDX-DE */
bdx_uncore_cpu_init();
break;
case 87: /* Knights Landing */
knl_uncore_cpu_init();
break;
default:
return 0;
}
......
arch/x86/kernel/cpu/perf_event_intel_uncore.h
View file @ 5cb52b5e
......@@ -338,6 +338,7 @@ int hsw_uncore_pci_init(void);
int bdw_uncore_pci_init(void);
void snb_uncore_cpu_init(void);
void nhm_uncore_cpu_init(void);
int snb_pci2phy_map_init(int devid);
/* perf_event_intel_uncore_snbep.c */
int snbep_uncore_pci_init(void);
......@@ -348,6 +349,8 @@ int hswep_uncore_pci_init(void);
void hswep_uncore_cpu_init(void);
int bdx_uncore_pci_init(void);
void bdx_uncore_cpu_init(void);
int knl_uncore_pci_init(void);
void knl_uncore_cpu_init(void);
/* perf_event_intel_uncore_nhmex.c */
void nhmex_uncore_cpu_init(void);
arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c
View file @ 5cb52b5e
......@@ -417,7 +417,7 @@ static void snb_uncore_imc_event_del(struct perf_event *event, int flags)
}
}
static int snb_pci2phy_map_init(int devid)
int snb_pci2phy_map_init(int devid)
{
struct pci_dev *dev = NULL;
struct pci2phy_map *map;
......
arch/x86/kernel/crash.c
View file @ 5cb52b5e
......@@ -35,6 +35,7 @@
#include <asm/cpu.h>
#include <asm/reboot.h>
#include <asm/virtext.h>
#include <asm/intel_pt.h>
/* Alignment required for elf header segment */
#define ELF_CORE_HEADER_ALIGN 4096
......@@ -125,6 +126,11 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs)
cpu_emergency_vmxoff();
cpu_emergency_svm_disable();
/*
* Disable Intel PT to stop its logging
*/
cpu_emergency_stop_pt();
disable_local_APIC();
}
......@@ -169,6 +175,11 @@ void native_machine_crash_shutdown(struct pt_regs *regs)
cpu_emergency_vmxoff();
cpu_emergency_svm_disable();
/*
* Disable Intel PT to stop its logging
*/
cpu_emergency_stop_pt();
#ifdef CONFIG_X86_IO_APIC
/* Prevent crash_kexec() from deadlocking on ioapic_lock. */
ioapic_zap_locks();
......
arch/x86/lib/msr.c
View file @ 5cb52b5e
#include <linux/module.h>
#include <linux/preempt.h>
#include <asm/msr.h>
#define CREATE_TRACE_POINTS
#include <asm/msr-trace.h>
struct msr *msrs_alloc(void)
{
......@@ -108,3 +110,27 @@ int msr_clear_bit(u32 msr, u8 bit)
{
return __flip_bit(msr, bit, false);
}
#ifdef CONFIG_TRACEPOINTS
void do_trace_write_msr(unsigned msr, u64 val, int failed)
{
trace_write_msr(msr, val, failed);
}
EXPORT_SYMBOL(do_trace_write_msr);
EXPORT_TRACEPOINT_SYMBOL(write_msr);
void do_trace_read_msr(unsigned msr, u64 val, int failed)
{
trace_read_msr(msr, val, failed);
}
EXPORT_SYMBOL(do_trace_read_msr);
EXPORT_TRACEPOINT_SYMBOL(read_msr);
void do_trace_rdpmc(unsigned counter, u64 val, int failed)
{
trace_rdpmc(counter, val, failed);
}
EXPORT_SYMBOL(do_trace_rdpmc);
EXPORT_TRACEPOINT_SYMBOL(rdpmc);
#endif
include/linux/tracepoint-defs.h 0 → 100644
View file @ 5cb52b5e
#ifndef TRACEPOINT_DEFS_H
#define TRACEPOINT_DEFS_H 1
/*
* File can be included directly by headers who only want to access
* tracepoint->key to guard out of line trace calls. Otherwise
* linux/tracepoint.h should be used.
*/
#include <linux/atomic.h>
#include <linux/static_key.h>
struct tracepoint_func {
void *func;
void *data;
int prio;
};
struct tracepoint {
const char *name; /* Tracepoint name */
struct static_key key;
void (*regfunc)(void);
void (*unregfunc)(void);
struct tracepoint_func __rcu *funcs;
};
#endif
include/linux/tracepoint.h
View file @ 5cb52b5e
......@@ -17,26 +17,12 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/rcupdate.h>
#include <linux/static_key.h>
#include <linux/tracepoint-defs.h>
struct module;
struct tracepoint;
struct notifier_block;
struct tracepoint_func {
void *func;
void *data;
int prio;
};
struct tracepoint {
const char *name; /* Tracepoint name */
struct static_key key;
void (*regfunc)(void);
void (*unregfunc)(void);
struct tracepoint_func __rcu *funcs;
};
struct trace_enum_map {
const char *system;
const char *enum_string;
......
include/uapi/linux/perf_event.h
View file @ 5cb52b5e
......@@ -171,6 +171,9 @@ enum perf_branch_sample_type_shift {
PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT = 12, /* indirect jumps */
PERF_SAMPLE_BRANCH_CALL_SHIFT = 13, /* direct call */
PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT = 14, /* no flags */
PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT = 15, /* no cycles */
PERF_SAMPLE_BRANCH_MAX_SHIFT /* non-ABI */
};
......@@ -192,6 +195,9 @@ enum perf_branch_sample_type {
PERF_SAMPLE_BRANCH_IND_JUMP = 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT,
PERF_SAMPLE_BRANCH_CALL = 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT,
PERF_SAMPLE_BRANCH_NO_FLAGS = 1U << PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT,
PERF_SAMPLE_BRANCH_NO_CYCLES = 1U << PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT,
PERF_SAMPLE_BRANCH_MAX = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT,
};
......
kernel/events/core.c
View file @ 5cb52b5e
This diff is collapsed.
lib/atomic64_test.c
View file @ 5cb52b5e
......@@ -16,6 +16,10 @@
#include <linux/kernel.h>
#include <linux/atomic.h>
#ifdef CONFIG_X86
#include <asm/processor.h> /* for boot_cpu_has below */
#endif
#define TEST(bit, op, c_op, val) \
do { \
atomic##bit##_set(&v, v0); \
......
tools/Makefile
View file @ 5cb52b5e
......@@ -96,7 +96,7 @@ cgroup_install firewire_install hv_install lguest_install perf_install usb_insta
$(call descend,$(@:_install=),install)
selftests_install:
$(call descend,testing/$(@:_clean=),install)
$(call descend,testing/$(@:_install=),install)
turbostat_install x86_energy_perf_policy_install:
$(call descend,power/x86/$(@:_install=),install)
......
tools/build/Makefile
View file @ 5cb52b5e
......@@ -25,7 +25,7 @@ export Q srctree CC LD
MAKEFLAGS := --no-print-directory
build := -f $(srctree)/tools/build/Makefile.build dir=. obj
all: fixdep
all: $(OUTPUT)fixdep
clean:
$(call QUIET_CLEAN, fixdep)
......
tools/build/Makefile.feature
View file @ 5cb52b5e
......@@ -7,7 +7,7 @@ endif
feature_check = $(eval $(feature_check_code))
define feature_check_code
feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
endef
feature_set = $(eval $(feature_set_code))
......@@ -101,7 +101,6 @@ ifeq ($(feature-all), 1)
#
$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
else
$(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS=$(LDFLAGS) -i -j -C $(feature_dir) $(addsuffix .bin,$(FEATURE_TESTS)) >/dev/null 2>&1)
$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
endif
......@@ -123,13 +122,31 @@ define feature_print_text_code
MSG = $(shell printf '...%30s: %s' $(1) $(2))
endef
#
# generates feature value assignment for name, like:
# $(call feature_assign,dwarf) == feature-dwarf=1
#
feature_assign = feature-$(1)=$(feature-$(1))
FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),feature-$(feat)($(feature-$(feat))))
FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
ifeq ($(dwarf-post-unwind),1)
FEATURE_DUMP += dwarf-post-unwind($(dwarf-post-unwind-text))
endif
feature_dump_check = $(eval $(feature_dump_check_code))
define feature_dump_check_code
ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
$(2) := 1
endif
endef
#
# First check if any test from FEATURE_DISPLAY
# and set feature_display := 1 if it does
$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
#
# Now also check if any other test changed,
# so we force FEATURE-DUMP generation
$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
# The $(feature_display) controls the default detection message
# output. It's set if:
......@@ -138,13 +155,13 @@ endif
# - one of the $(FEATURE_DISPLAY) is not detected
# - VF is enabled
ifneq ("$(FEATURE_DUMP)","$(FEATURE_DUMP_FILE)")
$(shell echo "$(FEATURE_DUMP)" > $(FEATURE_DUMP_FILENAME))
feature_display := 1
ifeq ($(feature_dump_changed),1)
$(shell rm -f $(FEATURE_DUMP_FILENAME))
$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
endif
feature_display_check = $(eval $(feature_check_display_code))
define feature_display_check_code
define feature_check_display_code
ifneq ($(feature-$(1)), 1)
feature_display := 1
endif
......@@ -161,11 +178,6 @@ ifeq ($(feature_display),1)
$(info )
$(info Auto-detecting system features:)
$(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
ifeq ($(dwarf-post-unwind),1)
$(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
endif
ifneq ($(feature_verbose),1)
$(info )
endif
......
tools/build/Makefile.include
View file @ 5cb52b5e
......@@ -4,7 +4,7 @@ ifdef CROSS_COMPILE
fixdep:
else
fixdep:
$(Q)$(MAKE) -C $(srctree)/tools/build fixdep
$(Q)$(MAKE) -C $(srctree)/tools/build CFLAGS= LDFLAGS= $(OUTPUT)fixdep
endif
.PHONY: fixdep
tools/build/feature/Makefile
View file @ 5cb52b5e
FILES= \
test-all.bin \
test-backtrace.bin \
......@@ -38,38 +37,40 @@ FILES= \
test-bpf.bin \
test-get_cpuid.bin
FILES := $(addprefix $(OUTPUT),$(FILES))
CC := $(CROSS_COMPILE)gcc -MD
PKG_CONFIG := $(CROSS_COMPILE)pkg-config
all: $(FILES)
__BUILD = $(CC) $(CFLAGS) -Wall -Werror -o $(OUTPUT)$@ $(patsubst %.bin,%.c,$@) $(LDFLAGS)
BUILD = $(__BUILD) > $(OUTPUT)$(@:.bin=.make.output) 2>&1
__BUILD = $(CC) $(CFLAGS) -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)
BUILD = $(__BUILD) > $(@:.bin=.make.output) 2>&1
###############################
test-all.bin:
$(OUTPUT)test-all.bin:
$(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -laudit -I/usr/include/slang -lslang $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz -llzma
test-hello.bin:
$(OUTPUT)test-hello.bin:
$(BUILD)
test-pthread-attr-setaffinity-np.bin:
$(OUTPUT)test-pthread-attr-setaffinity-np.bin:
$(BUILD) -D_GNU_SOURCE -lpthread
test-stackprotector-all.bin:
$(OUTPUT)test-stackprotector-all.bin:
$(BUILD) -fstack-protector-all
test-fortify-source.bin:
$(OUTPUT)test-fortify-source.bin:
$(BUILD) -O2 -D_FORTIFY_SOURCE=2
test-bionic.bin:
$(OUTPUT)test-bionic.bin:
$(BUILD)
test-libelf.bin:
$(OUTPUT)test-libelf.bin:
$(BUILD) -lelf
test-glibc.bin:
$(OUTPUT)test-glibc.bin:
$(BUILD)
DWARFLIBS := -ldw
......@@ -77,37 +78,37 @@ ifeq ($(findstring -static,${LDFLAGS}),-static)
DWARFLIBS += -lelf -lebl -lz -llzma -lbz2
endif
test-dwarf.bin:
$(OUTPUT)test-dwarf.bin:
$(BUILD) $(DWARFLIBS)
test-libelf-mmap.bin:
$(OUTPUT)test-libelf-mmap.bin:
$(BUILD) -lelf
test-libelf-getphdrnum.bin:
$(OUTPUT)test-libelf-getphdrnum.bin:
$(BUILD) -lelf
test-libnuma.bin:
$(OUTPUT)test-libnuma.bin:
$(BUILD) -lnuma
test-numa_num_possible_cpus.bin:
$(OUTPUT)test-numa_num_possible_cpus.bin:
$(BUILD) -lnuma
test-libunwind.bin:
$(OUTPUT)test-libunwind.bin:
$(BUILD) -lelf
test-libunwind-debug-frame.bin:
$(OUTPUT)test-libunwind-debug-frame.bin:
$(BUILD) -lelf
test-libaudit.bin:
$(OUTPUT)test-libaudit.bin:
$(BUILD) -laudit
test-libslang.bin:
$(OUTPUT)test-libslang.bin:
$(BUILD) -I/usr/include/slang -lslang
test-gtk2.bin:
$(OUTPUT)test-gtk2.bin:
$(BUILD) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
test-gtk2-infobar.bin:
$(OUTPUT)test-gtk2-infobar.bin:
$(BUILD) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
grep-libs = $(filter -l%,$(1))
......@@ -119,63 +120,63 @@ PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts 2>/dev/null`
FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
test-libperl.bin:
$(OUTPUT)test-libperl.bin:
$(BUILD) $(FLAGS_PERL_EMBED)
test-libpython.bin:
$(OUTPUT)test-libpython.bin:
$(BUILD)
test-libpython-version.bin:
$(OUTPUT)test-libpython-version.bin:
$(BUILD)
test-libbfd.bin:
$(OUTPUT)test-libbfd.bin:
$(BUILD) -DPACKAGE='"perf"' -lbfd -lz -liberty -ldl
test-liberty.bin:
$(CC) $(CFLAGS) -Wall -Werror -o $(OUTPUT)$@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty
$(OUTPUT)test-liberty.bin:
$(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty
test-liberty-z.bin:
$(CC) $(CFLAGS) -Wall -Werror -o $(OUTPUT)$@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty -lz
$(OUTPUT)test-liberty-z.bin:
$(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty -lz
test-cplus-demangle.bin:
$(OUTPUT)test-cplus-demangle.bin:
$(BUILD) -liberty
test-backtrace.bin:
$(OUTPUT)test-backtrace.bin:
$(BUILD)
test-timerfd.bin:
$(OUTPUT)test-timerfd.bin:
$(BUILD)
test-libdw-dwarf-unwind.bin:
$(OUTPUT)test-libdw-dwarf-unwind.bin:
$(BUILD) # -ldw provided by $(FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind)
test-libbabeltrace.bin:
$(OUTPUT)test-libbabeltrace.bin:
$(BUILD) # -lbabeltrace provided by $(FEATURE_CHECK_LDFLAGS-libbabeltrace)
test-sync-compare-and-swap.bin:
$(OUTPUT)test-sync-compare-and-swap.bin:
$(BUILD)
test-compile-32.bin:
$(CC) -m32 -o $(OUTPUT)$@ test-compile.c
$(OUTPUT)test-compile-32.bin:
$(CC) -m32 -o $@ test-compile.c
test-compile-x32.bin:
$(CC) -mx32 -o $(OUTPUT)$@ test-compile.c
$(OUTPUT)test-compile-x32.bin:
$(CC) -mx32 -o $@ test-compile.c
test-zlib.bin:
$(OUTPUT)test-zlib.bin:
$(BUILD) -lz
test-lzma.bin:
$(OUTPUT)test-lzma.bin:
$(BUILD) -llzma
test-get_cpuid.bin:
$(OUTPUT)test-get_cpuid.bin:
$(BUILD)
test-bpf.bin:
$(OUTPUT)test-bpf.bin:
$(BUILD)
-include *.d
-include $(OUTPUT)*.d
###############################
clean:
rm -f $(FILES) *.d $(FILES:.bin=.make.output)
rm -f $(FILES) $(OUTPUT)*.d $(FILES:.bin=.make.output)
tools/perf/util/include/linux/bitmap.h → tools/include/linux/bitmap.h
View file @ 5cb52b5e
......@@ -11,6 +11,8 @@ int __bitmap_weight(const unsigned long *bitmap, int bits);
void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
#define BITMAP_LAST_WORD_MASK(nbits) \
( \
((nbits) % BITS_PER_LONG) ? \
......
tools/include/linux/string.h 0 → 100644
View file @ 5cb52b5e
#ifndef _TOOLS_LINUX_STRING_H_
#define _TOOLS_LINUX_STRING_H_
#include <linux/types.h> /* for size_t */
void *memdup(const void *src, size_t len);
int strtobool(const char *s, bool *res);
#ifndef __UCLIBC__
extern size_t strlcpy(char *dest, const char *src, size_t size);
#endif
#endif /* _LINUX_STRING_H_ */
tools/lib/bpf/Makefile
View file @ 5cb52b5e
......@@ -71,7 +71,21 @@ FEATURE_DISPLAY = libelf bpf
INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/arch/$(ARCH)/include/uapi -I$(srctree)/include/uapi
FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
check_feat := 1
NON_CHECK_FEAT_TARGETS := clean TAGS tags cscope help
ifdef MAKECMDGOALS
ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
check_feat := 0
endif
endif
ifeq ($(check_feat),1)
ifeq ($(FEATURES_DUMP),)
include $(srctree)/tools/build/Makefile.feature
else
include $(FEATURES_DUMP)
endif
endif
export prefix libdir src obj
......
tools/lib/bpf/bpf.c
View file @ 5cb52b5e
......@@ -83,3 +83,17 @@ int bpf_load_program(enum bpf_prog_type type, struct bpf_insn *insns,
log_buf[0] = 0;
return sys_bpf(BPF_PROG_LOAD, &attr, sizeof(attr));
}
int bpf_map_update_elem(int fd, void *key, void *value,
u64 flags)
{
union bpf_attr attr;
bzero(&attr, sizeof(attr));
attr.map_fd = fd;
attr.key = ptr_to_u64(key);
attr.value = ptr_to_u64(value);
attr.flags = flags;
return sys_bpf(BPF_MAP_UPDATE_ELEM, &attr, sizeof(attr));
}
tools/lib/bpf/bpf.h
View file @ 5cb52b5e
......@@ -20,4 +20,6 @@ int bpf_load_program(enum bpf_prog_type type, struct bpf_insn *insns,
u32 kern_version, char *log_buf,
size_t log_buf_sz);
int bpf_map_update_elem(int fd, void *key, void *value,
u64 flags);
#endif
tools/lib/bpf/libbpf.c
View file @ 5cb52b5e
This diff is collapsed.
tools/lib/bpf/libbpf.h
View file @ 5cb52b5e
......@@ -88,6 +88,70 @@ const char *bpf_program__title(struct bpf_program *prog, bool needs_copy);
int bpf_program__fd(struct bpf_program *prog);
struct bpf_insn;
/*
* Libbpf allows callers to adjust BPF programs before being loaded
* into kernel. One program in an object file can be transform into
* multiple variants to be attached to different code.
*
* bpf_program_prep_t, bpf_program__set_prep and bpf_program__nth_fd
* are APIs for this propose.
*
* - bpf_program_prep_t:
* It defines 'preprocessor', which is a caller defined function
* passed to libbpf through bpf_program__set_prep(), and will be
* called before program is loaded. The processor should adjust
* the program one time for each instances according to the number
* passed to it.
*
* - bpf_program__set_prep:
* Attachs a preprocessor to a BPF program. The number of instances
* whould be created is also passed through this function.
*
* - bpf_program__nth_fd:
* After the program is loaded, get resuling fds from bpf program for
* each instances.
*
* If bpf_program__set_prep() is not used, the program whould be loaded
* without adjustment during bpf_object__load(). The program has only
* one instance. In this case bpf_program__fd(prog) is equal to
* bpf_program__nth_fd(prog, 0).
*/
struct bpf_prog_prep_result {
/*
* If not NULL, load new instruction array.
* If set to NULL, don't load this instance.
*/
struct bpf_insn *new_insn_ptr;
int new_insn_cnt;
/* If not NULL, result fd is set to it */
int *pfd;
};
/*
* Parameters of bpf_program_prep_t:
* - prog: The bpf_program being loaded.
* - n: Index of instance being generated.
* - insns: BPF instructions array.
* - insns_cnt:Number of instructions in insns.
* - res: Output parameter, result of transformation.
*
* Return value:
* - Zero: pre-processing success.
* - Non-zero: pre-processing, stop loading.
*/
typedef int (*bpf_program_prep_t)(struct bpf_program *prog, int n,
struct bpf_insn *insns, int insns_cnt,
struct bpf_prog_prep_result *res);
int bpf_program__set_prep(struct bpf_program *prog, int nr_instance,
bpf_program_prep_t prep);
int bpf_program__nth_fd(struct bpf_program *prog, int n);
/*
* We don't need __attribute__((packed)) now since it is
* unnecessary for 'bpf_map_def' because they are all aligned.
......@@ -101,4 +165,28 @@ struct bpf_map_def {
unsigned int max_entries;
};
/*
* There is another 'struct bpf_map' in include/linux/map.h. However,
* it is not a uapi header so no need to consider name clash.
*/
struct bpf_map;
struct bpf_map *
bpf_object__get_map_by_name(struct bpf_object *obj, const char *name);
struct bpf_map *
bpf_map__next(struct bpf_map *map, struct bpf_object *obj);
#define bpf_map__for_each(pos, obj) \
for ((pos) = bpf_map__next(NULL, (obj)); \
(pos) != NULL; \
(pos) = bpf_map__next((pos), (obj)))
int bpf_map__get_fd(struct bpf_map *map);
int bpf_map__get_def(struct bpf_map *map, struct bpf_map_def *pdef);
const char *bpf_map__get_name(struct bpf_map *map);
typedef void (*bpf_map_clear_priv_t)(struct bpf_map *, void *);
int bpf_map__set_private(struct bpf_map *map, void *priv,
bpf_map_clear_priv_t clear_priv);
int bpf_map__get_private(struct bpf_map *map, void **ppriv);
#endif
tools/lib/util/find_next_bit.c → tools/lib/find_bit.c
View file @ 5cb52b5e
/* find_next_bit.c: fallback find next bit implementation
/* bit search implementation
*
* Copied from lib/find_next_bit.c to tools/lib/next_bit.c
* Copied from lib/find_bit.c to tools/lib/find_bit.c
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* Copyright (C) 2008 IBM Corporation
* 'find_last_bit' is written by Rusty Russell <rusty@rustcorp.com.au>
* (Inspired by David Howell's find_next_bit implementation)
*
* Rewritten by Yury Norov <yury.norov@gmail.com> to decrease
* size and improve performance, 2015.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
......@@ -12,52 +19,50 @@
*/
#include <linux/bitops.h>
#include <asm/types.h>
#include <asm/byteorder.h>
#include <linux/bitmap.h>
#include <linux/kernel.h>
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
#if !defined(find_next_bit)
#ifndef find_next_bit
/*
* Find the next set bit in a memory region.
* This is a common helper function for find_next_bit and
* find_next_zero_bit. The difference is the "invert" argument, which
* is XORed with each fetched word before searching it for one bits.
*/
unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
unsigned long offset)
static unsigned long _find_next_bit(const unsigned long *addr,
unsigned long nbits, unsigned long start, unsigned long invert)
{
const unsigned long *p = addr + BITOP_WORD(offset);
unsigned long result = offset & ~(BITS_PER_LONG-1);
unsigned long tmp;
if (offset >= size)
return size;
size -= result;
offset %= BITS_PER_LONG;
if (offset) {
tmp = *(p++);
tmp &= (~0UL << offset);
if (size < BITS_PER_LONG)
goto found_first;
if (tmp)
goto found_middle;
size -= BITS_PER_LONG;
result += BITS_PER_LONG;
}
while (size & ~(BITS_PER_LONG-1)) {
if ((tmp = *(p++)))
goto found_middle;
result += BITS_PER_LONG;
size -= BITS_PER_LONG;
if (!nbits || start >= nbits)
return nbits;
tmp = addr[start / BITS_PER_LONG] ^ invert;
/* Handle 1st word. */
tmp &= BITMAP_FIRST_WORD_MASK(start);
start = round_down(start, BITS_PER_LONG);
while (!tmp) {
start += BITS_PER_LONG;
if (start >= nbits)
return nbits;
tmp = addr[start / BITS_PER_LONG] ^ invert;
}
if (!size)
return result;
tmp = *p;
found_first:
tmp &= (~0UL >> (BITS_PER_LONG - size));
if (tmp == 0UL) /* Are any bits set? */
return result + size; /* Nope. */
found_middle:
return result + __ffs(tmp);
return min(start + __ffs(tmp), nbits);
}
#endif
#ifndef find_next_bit
/*
* Find the next set bit in a memory region.
*/
unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
unsigned long offset)
{
return _find_next_bit(addr, size, offset, 0UL);
}
#endif
......@@ -67,23 +72,13 @@ unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
*/
unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
{
const unsigned long *p = addr;
unsigned long result = 0;
unsigned long tmp;
unsigned long idx;
while (size & ~(BITS_PER_LONG-1)) {
if ((tmp = *(p++)))
goto found;
result += BITS_PER_LONG;
size -= BITS_PER_LONG;
for (idx = 0; idx * BITS_PER_LONG < size; idx++) {
if (addr[idx])
return min(idx * BITS_PER_LONG + __ffs(addr[idx]), size);
}
if (!size)
return result;
tmp = (*p) & (~0UL >> (BITS_PER_LONG - size));
if (tmp == 0UL) /* Are any bits set? */
return result + size; /* Nope. */
found:
return result + __ffs(tmp);
return size;
}
#endif
tools/lib/string.c 0 → 100644
View file @ 5cb52b5e
/*
* linux/tools/lib/string.c
*
* Copied from linux/lib/string.c, where it is:
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* More specifically, the first copied function was strtobool, which
* was introduced by:
*
* d0f1fed29e6e ("Add a strtobool function matching semantics of existing in kernel equivalents")
* Author: Jonathan Cameron <jic23@cam.ac.uk>
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <linux/string.h>
#include <linux/compiler.h>
/**
* memdup - duplicate region of memory
*
* @src: memory region to duplicate
* @len: memory region length
*/
void *memdup(const void *src, size_t len)
{
void *p = malloc(len);
if (p)
memcpy(p, src, len);
return p;
}
/**
* strtobool - convert common user inputs into boolean values
* @s: input string
* @res: result
*
* This routine returns 0 iff the first character is one of 'Yy1Nn0'.
* Otherwise it will return -EINVAL. Value pointed to by res is
* updated upon finding a match.
*/
int strtobool(const char *s, bool *res)
{
switch (s[0]) {
case 'y':
case 'Y':
case '1':
*res = true;
break;
case 'n':
case 'N':
case '0':
*res = false;
break;
default:
return -EINVAL;
}
return 0;
}
/**
* strlcpy - Copy a C-string into a sized buffer
* @dest: Where to copy the string to
* @src: Where to copy the string from
* @size: size of destination buffer
*
* Compatible with *BSD: the result is always a valid
* NUL-terminated string that fits in the buffer (unless,
* of course, the buffer size is zero). It does not pad
* out the result like strncpy() does.
*
* If libc has strlcpy() then that version will override this
* implementation:
*/
size_t __weak strlcpy(char *dest, const char *src, size_t size)
{
size_t ret = strlen(src);
if (size) {
size_t len = (ret >= size) ? size - 1 : ret;
memcpy(dest, src, len);
dest[len] = '\0';
}
return ret;
}
tools/lib/subcmd/Build 0 → 100644
View file @ 5cb52b5e
libsubcmd-y += exec-cmd.o
libsubcmd-y += help.o
libsubcmd-y += pager.o
libsubcmd-y += parse-options.o
libsubcmd-y += run-command.o
libsubcmd-y += sigchain.o
libsubcmd-y += subcmd-config.o
tools/lib/subcmd/Makefile 0 → 100644
View file @ 5cb52b5e
include ../../scripts/Makefile.include
include ../../perf/config/utilities.mak # QUIET_CLEAN
ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(shell pwd)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
#$(info Determined 'srctree' to be $(srctree))
endif
CC = $(CROSS_COMPILE)gcc
AR = $(CROSS_COMPILE)ar
RM = rm -f
MAKEFLAGS += --no-print-directory
LIBFILE = $(OUTPUT)libsubcmd.a
CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC
CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
CFLAGS += -I$(srctree)/tools/include/
CFLAGS += -I$(srctree)/include/uapi
CFLAGS += -I$(srctree)/include
SUBCMD_IN := $(OUTPUT)libsubcmd-in.o
all:
export srctree OUTPUT CC LD CFLAGS V
include $(srctree)/tools/build/Makefile.include
all: fixdep $(LIBFILE)
$(SUBCMD_IN): FORCE
@$(MAKE) $(build)=libsubcmd
$(LIBFILE): $(SUBCMD_IN)
$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(SUBCMD_IN)
clean:
$(call QUIET_CLEAN, libsubcmd) $(RM) $(LIBFILE); \
find $(if $(OUTPUT),$(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
FORCE:
.PHONY: clean FORCE
tools/perf/util/exec_cmd.c → tools/lib/subcmd/exec-cmd.c
View file @ 5cb52b5e
#include "cache.h"
#include "exec_cmd.h"
#include "quote.h"
#include <linux/compiler.h>
#include <linux/string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "subcmd-util.h"
#include "exec-cmd.h"
#include "subcmd-config.h"
#define MAX_ARGS 32
#define PATH_MAX 4096
static const char *argv_exec_path;
static const char *argv0_path;
const char *system_path(const char *path)
void exec_cmd_init(const char *exec_name, const char *prefix,
const char *exec_path, const char *exec_path_env)
{
subcmd_config.exec_name = exec_name;
subcmd_config.prefix = prefix;
subcmd_config.exec_path = exec_path;
subcmd_config.exec_path_env = exec_path_env;
}
#define is_dir_sep(c) ((c) == '/')
static int is_absolute_path(const char *path)
{
return path[0] == '/';
}
static const char *get_pwd_cwd(void)
{
static char cwd[PATH_MAX + 1];
char *pwd;
struct stat cwd_stat, pwd_stat;
if (getcwd(cwd, PATH_MAX) == NULL)
return NULL;
pwd = getenv("PWD");
if (pwd && strcmp(pwd, cwd)) {
stat(cwd, &cwd_stat);
if (!stat(pwd, &pwd_stat) &&
pwd_stat.st_dev == cwd_stat.st_dev &&
pwd_stat.st_ino == cwd_stat.st_ino) {
strlcpy(cwd, pwd, PATH_MAX);
}
}
return cwd;
}
static const char *make_nonrelative_path(const char *path)
{
static char buf[PATH_MAX + 1];
if (is_absolute_path(path)) {
if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
die("Too long path: %.*s", 60, path);
} else {
const char *cwd = get_pwd_cwd();
if (!cwd)
die("Cannot determine the current working directory");
if (snprintf(buf, PATH_MAX, "%s/%s", cwd, path) >= PATH_MAX)
die("Too long path: %.*s", 60, path);
}
return buf;
}
char *system_path(const char *path)
{
static const char *prefix = PREFIX;
struct strbuf d = STRBUF_INIT;
char *buf = NULL;
if (is_absolute_path(path))
return path;
return strdup(path);
astrcatf(&buf, "%s/%s", subcmd_config.prefix, path);
strbuf_addf(&d, "%s/%s", prefix, path);
path = strbuf_detach(&d, NULL);
return path;
return buf;
}
const char *perf_extract_argv0_path(const char *argv0)
const char *extract_argv0_path(const char *argv0)
{
const char *slash;
......@@ -41,63 +99,64 @@ const char *perf_extract_argv0_path(const char *argv0)
return argv0;
}
void perf_set_argv_exec_path(const char *exec_path)
void set_argv_exec_path(const char *exec_path)
{
argv_exec_path = exec_path;
/*
* Propagate this setting to external programs.
*/
setenv(EXEC_PATH_ENVIRONMENT, exec_path, 1);
setenv(subcmd_config.exec_path_env, exec_path, 1);
}
/* Returns the highest-priority, location to look for perf programs. */
const char *perf_exec_path(void)
/* Returns the highest-priority location to look for subprograms. */
char *get_argv_exec_path(void)
{
const char *env;
char *env;
if (argv_exec_path)
return argv_exec_path;
return strdup(argv_exec_path);
env = getenv(EXEC_PATH_ENVIRONMENT);
if (env && *env) {
return env;
}
env = getenv(subcmd_config.exec_path_env);
if (env && *env)
return strdup(env);
return system_path(PERF_EXEC_PATH);
return system_path(subcmd_config.exec_path);
}
static void add_path(struct strbuf *out, const char *path)
static void add_path(char **out, const char *path)
{
if (path && *path) {
if (is_absolute_path(path))
strbuf_addstr(out, path);
astrcat(out, path);
else
strbuf_addstr(out, make_nonrelative_path(path));
astrcat(out, make_nonrelative_path(path));
strbuf_addch(out, PATH_SEP);
astrcat(out, ":");
}
}
void setup_path(void)
{
const char *old_path = getenv("PATH");
struct strbuf new_path = STRBUF_INIT;
char *new_path = NULL;
char *tmp = get_argv_exec_path();
add_path(&new_path, perf_exec_path());
add_path(&new_path, tmp);
add_path(&new_path, argv0_path);
free(tmp);
if (old_path)
strbuf_addstr(&new_path, old_path);
astrcat(&new_path, old_path);
else
strbuf_addstr(&new_path, "/usr/local/bin:/usr/bin:/bin");
astrcat(&new_path, "/usr/local/bin:/usr/bin:/bin");
setenv("PATH", new_path.buf, 1);
setenv("PATH", new_path, 1);
strbuf_release(&new_path);
free(new_path);
}
static const char **prepare_perf_cmd(const char **argv)
static const char **prepare_exec_cmd(const char **argv)
{
int argc;
const char **nargv;
......@@ -106,25 +165,25 @@ static const char **prepare_perf_cmd(const char **argv)
; /* just counting */
nargv = malloc(sizeof(*nargv) * (argc + 2));
nargv[0] = "perf";
nargv[0] = subcmd_config.exec_name;
for (argc = 0; argv[argc]; argc++)
nargv[argc + 1] = argv[argc];
nargv[argc + 1] = NULL;
return nargv;
}
int execv_perf_cmd(const char **argv) {
const char **nargv = prepare_perf_cmd(argv);
int execv_cmd(const char **argv) {
const char **nargv = prepare_exec_cmd(argv);
/* execvp() can only ever return if it fails */
execvp("perf", (char **)nargv);
execvp(subcmd_config.exec_name, (char **)nargv);
free(nargv);
return -1;
}
int execl_perf_cmd(const char *cmd,...)
int execl_cmd(const char *cmd,...)
{
int argc;
const char *argv[MAX_ARGS + 1];
......@@ -140,9 +199,11 @@ int execl_perf_cmd(const char *cmd,...)
break;
}
va_end(param);
if (MAX_ARGS <= argc)
return error("too many args to run %s", cmd);
if (MAX_ARGS <= argc) {
fprintf(stderr, " Error: too many args to run %s\n", cmd);
return -1;
}
argv[argc] = NULL;
return execv_perf_cmd(argv);
return execv_cmd(argv);
}
tools/lib/subcmd/exec-cmd.h 0 → 100644
View file @ 5cb52b5e
#ifndef __SUBCMD_EXEC_CMD_H
#define __SUBCMD_EXEC_CMD_H
extern void exec_cmd_init(const char *exec_name, const char *prefix,
const char *exec_path, const char *exec_path_env);
extern void set_argv_exec_path(const char *exec_path);
extern const char *extract_argv0_path(const char *path);
extern void setup_path(void);
extern int execv_cmd(const char **argv); /* NULL terminated */
extern int execl_cmd(const char *cmd, ...);
/* get_argv_exec_path and system_path return malloc'd string, caller must free it */
extern char *get_argv_exec_path(void);
extern char *system_path(const char *path);
#endif /* __SUBCMD_EXEC_CMD_H */
tools/perf/util/help.c → tools/lib/subcmd/help.c
View file @ 5cb52b5e
#include "cache.h"
#include "../builtin.h"
#include "exec_cmd.h"
#include "levenshtein.h"
#include "help.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include "subcmd-util.h"
#include "help.h"
#include "exec-cmd.h"
void add_cmdname(struct cmdnames *cmds, const char *name, size_t len)
{
......@@ -17,7 +23,7 @@ void add_cmdname(struct cmdnames *cmds, const char *name, size_t len)
cmds->names[cmds->cnt++] = ent;
}
static void clean_cmdnames(struct cmdnames *cmds)
void clean_cmdnames(struct cmdnames *cmds)
{
unsigned int i;
......@@ -28,14 +34,14 @@ static void clean_cmdnames(struct cmdnames *cmds)
cmds->alloc = 0;
}
static int cmdname_compare(const void *a_, const void *b_)
int cmdname_compare(const void *a_, const void *b_)
{
struct cmdname *a = *(struct cmdname **)a_;
struct cmdname *b = *(struct cmdname **)b_;
return strcmp(a->name, b->name);
}
static void uniq(struct cmdnames *cmds)
void uniq(struct cmdnames *cmds)
{
unsigned int i, j;
......@@ -71,6 +77,28 @@ void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes)
cmds->cnt = cj;
}
static void get_term_dimensions(struct winsize *ws)
{
char *s = getenv("LINES");
if (s != NULL) {
ws->ws_row = atoi(s);
s = getenv("COLUMNS");
if (s != NULL) {
ws->ws_col = atoi(s);
if (ws->ws_row && ws->ws_col)
return;
}
}
#ifdef TIOCGWINSZ
if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
ws->ws_row && ws->ws_col)
return;
#endif
ws->ws_row = 25;
ws->ws_col = 80;
}
static void pretty_print_string_list(struct cmdnames *cmds, int longest)
{
int cols = 1, rows;
......@@ -114,6 +142,14 @@ static int is_executable(const char *name)
return st.st_mode & S_IXUSR;
}
static int has_extension(const char *filename, const char *ext)
{
size_t len = strlen(filename);
size_t extlen = strlen(ext);
return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
}
static void list_commands_in_dir(struct cmdnames *cmds,
const char *path,
const char *prefix)
......@@ -121,8 +157,7 @@ static void list_commands_in_dir(struct cmdnames *cmds,
int prefix_len;
DIR *dir = opendir(path);
struct dirent *de;
struct strbuf buf = STRBUF_INIT;
int len;
char *buf = NULL;
if (!dir)
return;
......@@ -130,8 +165,7 @@ static void list_commands_in_dir(struct cmdnames *cmds,
prefix = "perf-";
prefix_len = strlen(prefix);
strbuf_addf(&buf, "%s/", path);
len = buf.len;
astrcatf(&buf, "%s/", path);
while ((de = readdir(dir)) != NULL) {
int entlen;
......@@ -139,9 +173,8 @@ static void list_commands_in_dir(struct cmdnames *cmds,
if (prefixcmp(de->d_name, prefix))
continue;
strbuf_setlen(&buf, len);
strbuf_addstr(&buf, de->d_name);
if (!is_executable(buf.buf))
astrcat(&buf, de->d_name);
if (!is_executable(buf))
continue;
entlen = strlen(de->d_name) - prefix_len;
......@@ -151,7 +184,7 @@ static void list_commands_in_dir(struct cmdnames *cmds,
add_cmdname(cmds, de->d_name + prefix_len, entlen);
}
closedir(dir);
strbuf_release(&buf);
free(buf);
}
void load_command_list(const char *prefix,
......@@ -159,7 +192,7 @@ void load_command_list(const char *prefix,
struct cmdnames *other_cmds)
{
const char *env_path = getenv("PATH");
const char *exec_path = perf_exec_path();
char *exec_path = get_argv_exec_path();
if (exec_path) {
list_commands_in_dir(main_cmds, exec_path, prefix);
......@@ -172,7 +205,7 @@ void load_command_list(const char *prefix,
char *paths, *path, *colon;
path = paths = strdup(env_path);
while (1) {
if ((colon = strchr(path, PATH_SEP)))
if ((colon = strchr(path, ':')))
*colon = 0;
if (!exec_path || strcmp(path, exec_path))
list_commands_in_dir(other_cmds, path, prefix);
......@@ -187,6 +220,7 @@ void load_command_list(const char *prefix,
sizeof(*other_cmds->names), cmdname_compare);
uniq(other_cmds);
}
free(exec_path);
exclude_cmds(other_cmds, main_cmds);
}
......@@ -203,13 +237,14 @@ void list_commands(const char *title, struct cmdnames *main_cmds,
longest = other_cmds->names[i]->len;
if (main_cmds->cnt) {
const char *exec_path = perf_exec_path();
char *exec_path = get_argv_exec_path();
printf("available %s in '%s'\n", title, exec_path);
printf("----------------");
mput_char('-', strlen(title) + strlen(exec_path));
putchar('\n');
pretty_print_string_list(main_cmds, longest);
putchar('\n');
free(exec_path);
}
if (other_cmds->cnt) {
......@@ -231,109 +266,3 @@ int is_in_cmdlist(struct cmdnames *c, const char *s)
return 1;
return 0;
}
static int autocorrect;
static struct cmdnames aliases;
static int perf_unknown_cmd_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "help.autocorrect"))
autocorrect = perf_config_int(var,value);
/* Also use aliases for command lookup */
if (!prefixcmp(var, "alias."))
add_cmdname(&aliases, var + 6, strlen(var + 6));
return perf_default_config(var, value, cb);
}
static int levenshtein_compare(const void *p1, const void *p2)
{
const struct cmdname *const *c1 = p1, *const *c2 = p2;
const char *s1 = (*c1)->name, *s2 = (*c2)->name;
int l1 = (*c1)->len;
int l2 = (*c2)->len;
return l1 != l2 ? l1 - l2 : strcmp(s1, s2);
}
static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)
{
unsigned int i;
ALLOC_GROW(cmds->names, cmds->cnt + old->cnt, cmds->alloc);
for (i = 0; i < old->cnt; i++)
cmds->names[cmds->cnt++] = old->names[i];
zfree(&old->names);
old->cnt = 0;
}
const char *help_unknown_cmd(const char *cmd)
{
unsigned int i, n = 0, best_similarity = 0;
struct cmdnames main_cmds, other_cmds;
memset(&main_cmds, 0, sizeof(main_cmds));
memset(&other_cmds, 0, sizeof(main_cmds));
memset(&aliases, 0, sizeof(aliases));
perf_config(perf_unknown_cmd_config, NULL);
load_command_list("perf-", &main_cmds, &other_cmds);
add_cmd_list(&main_cmds, &aliases);
add_cmd_list(&main_cmds, &other_cmds);
qsort(main_cmds.names, main_cmds.cnt,
sizeof(main_cmds.names), cmdname_compare);
uniq(&main_cmds);
if (main_cmds.cnt) {
/* This reuses cmdname->len for similarity index */
for (i = 0; i < main_cmds.cnt; ++i)
main_cmds.names[i]->len =
levenshtein(cmd, main_cmds.names[i]->name, 0, 2, 1, 4);
qsort(main_cmds.names, main_cmds.cnt,
sizeof(*main_cmds.names), levenshtein_compare);
best_similarity = main_cmds.names[0]->len;
n = 1;
while (n < main_cmds.cnt && best_similarity == main_cmds.names[n]->len)
++n;
}
if (autocorrect && n == 1) {
const char *assumed = main_cmds.names[0]->name;
main_cmds.names[0] = NULL;
clean_cmdnames(&main_cmds);
fprintf(stderr, "WARNING: You called a perf program named '%s', "
"which does not exist.\n"
"Continuing under the assumption that you meant '%s'\n",
cmd, assumed);
if (autocorrect > 0) {
fprintf(stderr, "in %0.1f seconds automatically...\n",
(float)autocorrect/10.0);
poll(NULL, 0, autocorrect * 100);
}
return assumed;
}
fprintf(stderr, "perf: '%s' is not a perf-command. See 'perf --help'.\n", cmd);
if (main_cmds.cnt && best_similarity < 6) {
fprintf(stderr, "\nDid you mean %s?\n",
n < 2 ? "this": "one of these");
for (i = 0; i < n; i++)
fprintf(stderr, "\t%s\n", main_cmds.names[i]->name);
}
exit(1);
}
int cmd_version(int argc __maybe_unused, const char **argv __maybe_unused,
const char *prefix __maybe_unused)
{
printf("perf version %s\n", perf_version_string);
return 0;
}
tools/perf/util/help.h → tools/lib/subcmd/help.h
View file @ 5cb52b5e
#ifndef __PERF_HELP_H
#define __PERF_HELP_H
#ifndef __SUBCMD_HELP_H
#define __SUBCMD_HELP_H
#include <sys/types.h>
struct cmdnames {
size_t alloc;
size_t cnt;
struct cmdname {
size_t len; /* also used for similarity index in help.c */
char name[FLEX_ARRAY];
char name[];
} **names;
};
......@@ -20,10 +22,13 @@ void load_command_list(const char *prefix,
struct cmdnames *main_cmds,
struct cmdnames *other_cmds);
void add_cmdname(struct cmdnames *cmds, const char *name, size_t len);
void clean_cmdnames(struct cmdnames *cmds);
int cmdname_compare(const void *a, const void *b);
void uniq(struct cmdnames *cmds);
/* Here we require that excludes is a sorted list. */
void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes);
int is_in_cmdlist(struct cmdnames *c, const char *s);
void list_commands(const char *title, struct cmdnames *main_cmds,
struct cmdnames *other_cmds);
#endif /* __PERF_HELP_H */
#endif /* __SUBCMD_HELP_H */
tools/perf/util/pager.c → tools/lib/subcmd/pager.c
View file @ 5cb52b5e
#include "cache.h"
#include <sys/select.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include "pager.h"
#include "run-command.h"
#include "sigchain.h"
#include "subcmd-config.h"
/*
* This is split up from the rest of git so that we can do
......@@ -9,6 +15,11 @@
static int spawned_pager;
void pager_init(const char *pager_env)
{
subcmd_config.pager_env = pager_env;
}
static void pager_preexec(void)
{
/*
......@@ -46,7 +57,7 @@ static void wait_for_pager_signal(int signo)
void setup_pager(void)
{
const char *pager = getenv("PERF_PAGER");
const char *pager = getenv(subcmd_config.pager_env);
if (!isatty(1))
return;
......@@ -85,11 +96,5 @@ void setup_pager(void)
int pager_in_use(void)
{
const char *env;
if (spawned_pager)
return 1;
env = getenv("PERF_PAGER_IN_USE");
return env ? perf_config_bool("PERF_PAGER_IN_USE", env) : 0;
return spawned_pager;
}
tools/lib/subcmd/pager.h 0 → 100644
View file @ 5cb52b5e
#ifndef __SUBCMD_PAGER_H
#define __SUBCMD_PAGER_H
extern void pager_init(const char *pager_env);
extern void setup_pager(void);
extern int pager_in_use(void);
#endif /* __SUBCMD_PAGER_H */
tools/perf/util/parse-options.h → tools/lib/subcmd/parse-options.h
View file @ 5cb52b5e
#ifndef __PERF_PARSE_OPTIONS_H
#define __PERF_PARSE_OPTIONS_H
#ifndef __SUBCMD_PARSE_OPTIONS_H
#define __SUBCMD_PARSE_OPTIONS_H
#include <linux/kernel.h>
#include <stdbool.h>
#include <stdint.h>
enum parse_opt_type {
/* special types */
......@@ -41,6 +41,8 @@ enum parse_opt_option_flags {
PARSE_OPT_DISABLED = 32,
PARSE_OPT_EXCLUSIVE = 64,
PARSE_OPT_NOEMPTY = 128,
PARSE_OPT_NOBUILD = 256,
PARSE_OPT_CANSKIP = 512,
};
struct option;
......@@ -96,6 +98,7 @@ struct option {
void *value;
const char *argh;
const char *help;
const char *build_opt;
int flags;
parse_opt_cb *callback;
......@@ -149,6 +152,9 @@ struct option {
/* parse_options() will filter out the processed options and leave the
* non-option argments in argv[].
* Returns the number of arguments left in argv[].
*
* NOTE: parse_options() and parse_options_subcommand() may call exit() in the
* case of an error (or for 'special' options like --list-cmds or --list-opts).
*/
extern int parse_options(int argc, const char **argv,
const struct option *options,
......@@ -195,15 +201,6 @@ extern int parse_options_usage(const char * const *usagestr,
const char *optstr,
bool short_opt);
extern void parse_options_start(struct parse_opt_ctx_t *ctx,
int argc, const char **argv, int flags);
extern int parse_options_step(struct parse_opt_ctx_t *ctx,
const struct option *options,
const char * const usagestr[]);
extern int parse_options_end(struct parse_opt_ctx_t *ctx);
/*----- some often used options -----*/
extern int parse_opt_abbrev_cb(const struct option *, const char *, int);
......@@ -226,4 +223,7 @@ extern int parse_opt_verbosity_cb(const struct option *, const char *, int);
extern const char *parse_options_fix_filename(const char *prefix, const char *file);
void set_option_flag(struct option *opts, int sopt, const char *lopt, int flag);
#endif /* __PERF_PARSE_OPTIONS_H */
void set_option_nobuild(struct option *opts, int shortopt, const char *longopt,
const char *build_opt, bool can_skip);
#endif /* __SUBCMD_PARSE_OPTIONS_H */
tools/perf/util/run-command.c → tools/lib/subcmd/run-command.c
View file @ 5cb52b5e
#include "cache.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/wait.h>
#include "subcmd-util.h"
#include "run-command.h"
#include "exec_cmd.h"
#include "debug.h"
#include "exec-cmd.h"
#define STRERR_BUFSIZE 128
static inline void close_pair(int fd[2])
{
......@@ -112,8 +120,8 @@ int start_command(struct child_process *cmd)
}
if (cmd->preexec_cb)
cmd->preexec_cb();
if (cmd->perf_cmd) {
execv_perf_cmd(cmd->argv);
if (cmd->exec_cmd) {
execv_cmd(cmd->argv);
} else {
execvp(cmd->argv[0], (char *const*) cmd->argv);
}
......@@ -164,8 +172,8 @@ static int wait_or_whine(pid_t pid)
if (waiting < 0) {
if (errno == EINTR)
continue;
error("waitpid failed (%s)",
strerror_r(errno, sbuf, sizeof(sbuf)));
fprintf(stderr, " Error: waitpid failed (%s)",
strerror_r(errno, sbuf, sizeof(sbuf)));
return -ERR_RUN_COMMAND_WAITPID;
}
if (waiting != pid)
......@@ -207,7 +215,7 @@ static void prepare_run_command_v_opt(struct child_process *cmd,
memset(cmd, 0, sizeof(*cmd));
cmd->argv = argv;
cmd->no_stdin = opt & RUN_COMMAND_NO_STDIN ? 1 : 0;
cmd->perf_cmd = opt & RUN_PERF_CMD ? 1 : 0;
cmd->exec_cmd = opt & RUN_EXEC_CMD ? 1 : 0;
cmd->stdout_to_stderr = opt & RUN_COMMAND_STDOUT_TO_STDERR ? 1 : 0;
}
......
tools/perf/util/run-command.h → tools/lib/subcmd/run-command.h
View file @ 5cb52b5e
#ifndef __PERF_RUN_COMMAND_H
#define __PERF_RUN_COMMAND_H
#ifndef __SUBCMD_RUN_COMMAND_H
#define __SUBCMD_RUN_COMMAND_H
#include <unistd.h>
enum {
ERR_RUN_COMMAND_FORK = 10000,
......@@ -41,7 +43,7 @@ struct child_process {
unsigned no_stdin:1;
unsigned no_stdout:1;
unsigned no_stderr:1;
unsigned perf_cmd:1; /* if this is to be perf sub-command */
unsigned exec_cmd:1; /* if this is to be external sub-command */
unsigned stdout_to_stderr:1;
void (*preexec_cb)(void);
};
......@@ -51,8 +53,8 @@ int finish_command(struct child_process *);
int run_command(struct child_process *);
#define RUN_COMMAND_NO_STDIN 1
#define RUN_PERF_CMD 2 /*If this is to be perf sub-command */
#define RUN_EXEC_CMD 2 /*If this is to be external sub-command */
#define RUN_COMMAND_STDOUT_TO_STDERR 4
int run_command_v_opt(const char **argv, int opt);
#endif /* __PERF_RUN_COMMAND_H */
#endif /* __SUBCMD_RUN_COMMAND_H */
tools/perf/util/sigchain.c → tools/lib/subcmd/sigchain.c
View file @ 5cb52b5e
#include <signal.h>
#include "subcmd-util.h"
#include "sigchain.h"
#include "cache.h"
#define SIGCHAIN_MAX_SIGNALS 32
......
tools/perf/util/sigchain.h → tools/lib/subcmd/sigchain.h
View file @ 5cb52b5e
#ifndef __PERF_SIGCHAIN_H
#define __PERF_SIGCHAIN_H
#ifndef __SUBCMD_SIGCHAIN_H
#define __SUBCMD_SIGCHAIN_H
typedef void (*sigchain_fun)(int);
......@@ -7,4 +7,4 @@ int sigchain_pop(int sig);
void sigchain_push_common(sigchain_fun f);
#endif /* __PERF_SIGCHAIN_H */
#endif /* __SUBCMD_SIGCHAIN_H */
tools/lib/subcmd/subcmd-config.c 0 → 100644
View file @ 5cb52b5e
#include "subcmd-config.h"
#define UNDEFINED "SUBCMD_HAS_NOT_BEEN_INITIALIZED"
struct subcmd_config subcmd_config = {
.exec_name = UNDEFINED,
.prefix = UNDEFINED,
.exec_path = UNDEFINED,
.exec_path_env = UNDEFINED,
.pager_env = UNDEFINED,
};
tools/lib/subcmd/subcmd-config.h 0 → 100644
View file @ 5cb52b5e
#ifndef __PERF_SUBCMD_CONFIG_H
#define __PERF_SUBCMD_CONFIG_H
struct subcmd_config {
const char *exec_name;
const char *prefix;
const char *exec_path;
const char *exec_path_env;
const char *pager_env;
};
extern struct subcmd_config subcmd_config;
#endif /* __PERF_SUBCMD_CONFIG_H */
tools/lib/subcmd/subcmd-util.h 0 → 100644
View file @ 5cb52b5e
#ifndef __SUBCMD_UTIL_H
#define __SUBCMD_UTIL_H
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#define NORETURN __attribute__((__noreturn__))
static inline void report(const char *prefix, const char *err, va_list params)
{
char msg[1024];
vsnprintf(msg, sizeof(msg), err, params);
fprintf(stderr, " %s%s\n", prefix, msg);
}
static NORETURN inline void die(const char *err, ...)
{
va_list params;
va_start(params, err);
report(" Fatal: ", err, params);
exit(128);
va_end(params);
}
#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
#define alloc_nr(x) (((x)+16)*3/2)
/*
* Realloc the buffer pointed at by variable 'x' so that it can hold
* at least 'nr' entries; the number of entries currently allocated
* is 'alloc', using the standard growing factor alloc_nr() macro.
*
* DO NOT USE any expression with side-effect for 'x' or 'alloc'.
*/
#define ALLOC_GROW(x, nr, alloc) \
do { \
if ((nr) > alloc) { \
if (alloc_nr(alloc) < (nr)) \
alloc = (nr); \
else \
alloc = alloc_nr(alloc); \
x = xrealloc((x), alloc * sizeof(*(x))); \
} \
} while(0)
static inline void *xrealloc(void *ptr, size_t size)
{
void *ret = realloc(ptr, size);
if (!ret && !size)
ret = realloc(ptr, 1);
if (!ret) {
ret = realloc(ptr, size);
if (!ret && !size)
ret = realloc(ptr, 1);
if (!ret)
die("Out of memory, realloc failed");
}
return ret;
}
#define astrcatf(out, fmt, ...) \
({ \
char *tmp = *(out); \
if (asprintf((out), "%s" fmt, tmp ?: "", ## __VA_ARGS__) == -1) \
die("asprintf failed"); \
free(tmp); \
})
static inline void astrcat(char **out, const char *add)
{
char *tmp = *out;
if (asprintf(out, "%s%s", tmp ?: "", add) == -1)
die("asprintf failed");
free(tmp);
}
static inline int prefixcmp(const char *str, const char *prefix)
{
for (; ; str++, prefix++)
if (!*prefix)
return 0;
else if (*str != *prefix)
return (unsigned char)*prefix - (unsigned char)*str;
}
#endif /* __SUBCMD_UTIL_H */
tools/lib/traceevent/event-parse.c
View file @ 5cb52b5e
......@@ -4735,73 +4735,80 @@ static int is_printable_array(char *p, unsigned int len)
return 1;
}
static void print_event_fields(struct trace_seq *s, void *data,
int size __maybe_unused,
struct event_format *event)
void pevent_print_field(struct trace_seq *s, void *data,
struct format_field *field)
{
struct format_field *field;
unsigned long long val;
unsigned int offset, len, i;
field = event->format.fields;
while (field) {
trace_seq_printf(s, " %s=", field->name);
if (field->flags & FIELD_IS_ARRAY) {
offset = field->offset;
len = field->size;
if (field->flags & FIELD_IS_DYNAMIC) {
val = pevent_read_number(event->pevent, data + offset, len);
offset = val;
len = offset >> 16;
offset &= 0xffff;
}
if (field->flags & FIELD_IS_STRING &&
is_printable_array(data + offset, len)) {
trace_seq_printf(s, "%s", (char *)data + offset);
} else {
trace_seq_puts(s, "ARRAY[");
for (i = 0; i < len; i++) {
if (i)
trace_seq_puts(s, ", ");
trace_seq_printf(s, "%02x",
*((unsigned char *)data + offset + i));
}
trace_seq_putc(s, ']');
field->flags &= ~FIELD_IS_STRING;
}
struct pevent *pevent = field->event->pevent;
if (field->flags & FIELD_IS_ARRAY) {
offset = field->offset;
len = field->size;
if (field->flags & FIELD_IS_DYNAMIC) {
val = pevent_read_number(pevent, data + offset, len);
offset = val;
len = offset >> 16;
offset &= 0xffff;
}
if (field->flags & FIELD_IS_STRING &&
is_printable_array(data + offset, len)) {
trace_seq_printf(s, "%s", (char *)data + offset);
} else {
val = pevent_read_number(event->pevent, data + field->offset,
field->size);
if (field->flags & FIELD_IS_POINTER) {
trace_seq_printf(s, "0x%llx", val);
} else if (field->flags & FIELD_IS_SIGNED) {
switch (field->size) {
case 4:
/*
* If field is long then print it in hex.
* A long usually stores pointers.
*/
if (field->flags & FIELD_IS_LONG)
trace_seq_printf(s, "0x%x", (int)val);
else
trace_seq_printf(s, "%d", (int)val);
break;
case 2:
trace_seq_printf(s, "%2d", (short)val);
break;
case 1:
trace_seq_printf(s, "%1d", (char)val);
break;
default:
trace_seq_printf(s, "%lld", val);
}
} else {
trace_seq_puts(s, "ARRAY[");
for (i = 0; i < len; i++) {
if (i)
trace_seq_puts(s, ", ");
trace_seq_printf(s, "%02x",
*((unsigned char *)data + offset + i));
}
trace_seq_putc(s, ']');
field->flags &= ~FIELD_IS_STRING;
}
} else {
val = pevent_read_number(pevent, data + field->offset,
field->size);
if (field->flags & FIELD_IS_POINTER) {
trace_seq_printf(s, "0x%llx", val);
} else if (field->flags & FIELD_IS_SIGNED) {
switch (field->size) {
case 4:
/*
* If field is long then print it in hex.
* A long usually stores pointers.
*/
if (field->flags & FIELD_IS_LONG)
trace_seq_printf(s, "0x%llx", val);
trace_seq_printf(s, "0x%x", (int)val);
else
trace_seq_printf(s, "%llu", val);
trace_seq_printf(s, "%d", (int)val);
break;
case 2:
trace_seq_printf(s, "%2d", (short)val);
break;
case 1:
trace_seq_printf(s, "%1d", (char)val);
break;
default:
trace_seq_printf(s, "%lld", val);
}
} else {
if (field->flags & FIELD_IS_LONG)
trace_seq_printf(s, "0x%llx", val);
else
trace_seq_printf(s, "%llu", val);
}
}
}
void pevent_print_fields(struct trace_seq *s, void *data,
int size __maybe_unused, struct event_format *event)
{
struct format_field *field;
field = event->format.fields;
while (field) {
trace_seq_printf(s, " %s=", field->name);
pevent_print_field(s, data, field);
field = field->next;
}
}
......@@ -4827,7 +4834,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event
if (event->flags & EVENT_FL_FAILED) {
trace_seq_printf(s, "[FAILED TO PARSE]");
print_event_fields(s, data, size, event);
pevent_print_fields(s, data, size, event);
return;
}
......@@ -4968,13 +4975,12 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event
sizeof(long) != 8) {
char *p;
ls = 2;
/* make %l into %ll */
p = strchr(format, 'l');
if (p)
if (ls == 1 && (p = strchr(format, 'l')))
memmove(p+1, p, strlen(p)+1);
else if (strcmp(format, "%p") == 0)
strcpy(format, "0x%llx");
ls = 2;
}
switch (ls) {
case -2:
......@@ -5302,7 +5308,7 @@ void pevent_event_info(struct trace_seq *s, struct event_format *event,
int print_pretty = 1;
if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW))
print_event_fields(s, record->data, record->size, event);
pevent_print_fields(s, record->data, record->size, event);
else {
if (event->handler && !(event->flags & EVENT_FL_NOHANDLE))
......
tools/lib/traceevent/event-parse.h
View file @ 5cb52b5e
......@@ -705,6 +705,10 @@ struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *com
struct cmdline *next);
int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline);
void pevent_print_field(struct trace_seq *s, void *data,
struct format_field *field);
void pevent_print_fields(struct trace_seq *s, void *data,
int size __maybe_unused, struct event_format *event);
void pevent_event_info(struct trace_seq *s, struct event_format *event,
struct pevent_record *record);
int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
......
tools/perf/Build
View file @ 5cb52b5e
perf-y += builtin-bench.o
perf-y += builtin-annotate.o
perf-y += builtin-config.o
perf-y += builtin-diff.o
perf-y += builtin-evlist.o
perf-y += builtin-help.o
......@@ -19,6 +20,7 @@ perf-y += builtin-kvm.o
perf-y += builtin-inject.o
perf-y += builtin-mem.o
perf-y += builtin-data.o
perf-y += builtin-version.o
perf-$(CONFIG_AUDIT) += builtin-trace.o
perf-$(CONFIG_LIBELF) += builtin-probe.o
......@@ -34,8 +36,12 @@ paths += -DPERF_MAN_PATH="BUILD_STR($(mandir_SQ))"
CFLAGS_builtin-help.o += $(paths)
CFLAGS_builtin-timechart.o += $(paths)
CFLAGS_perf.o += -DPERF_HTML_PATH="BUILD_STR($(htmldir_SQ))" -include $(OUTPUT)PERF-VERSION-FILE
CFLAGS_perf.o += -DPERF_HTML_PATH="BUILD_STR($(htmldir_SQ))" \
-DPERF_EXEC_PATH="BUILD_STR($(perfexecdir_SQ))" \
-DPREFIX="BUILD_STR($(prefix_SQ))" \
-include $(OUTPUT)PERF-VERSION-FILE
CFLAGS_builtin-trace.o += -DSTRACE_GROUPS_DIR="BUILD_STR($(STRACE_GROUPS_DIR_SQ))"
CFLAGS_builtin-report.o += -DTIPDIR="BUILD_STR($(tipdir_SQ))"
libperf-y += util/
libperf-y += arch/
......
tools/perf/Documentation/perf-config.txt 0 → 100644
View file @ 5cb52b5e
This diff is collapsed.
tools/perf/Documentation/perf-evlist.txt
View file @ 5cb52b5e
......@@ -32,6 +32,9 @@ OPTIONS
--group::
Show event group information.
--trace-fields::
Show tracepoint field names.
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-list[1],
......
tools/perf/Documentation/perf-record.txt
View file @ 5cb52b5e
......@@ -207,11 +207,23 @@ comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-
In per-thread mode with inheritance mode on (default), samples are captured only when
the thread executes on the designated CPUs. Default is to monitor all CPUs.
-B::
--no-buildid::
Do not save the build ids of binaries in the perf.data files. This skips
post processing after recording, which sometimes makes the final step in
the recording process to take a long time, as it needs to process all
events looking for mmap records. The downside is that it can misresolve
symbols if the workload binaries used when recording get locally rebuilt
or upgraded, because the only key available in this case is the
pathname. You can also set the "record.build-id" config variable to
'skip to have this behaviour permanently.
-N::
--no-buildid-cache::
Do not update the buildid cache. This saves some overhead in situations
where the information in the perf.data file (which includes buildids)
is sufficient.
is sufficient. You can also set the "record.build-id" config variable to
'no-cache' to have the same effect.
-G name,...::
--cgroup name,...::
......@@ -314,11 +326,17 @@ This option sets the time out limit. The default value is 500 ms.
Record context switch events i.e. events of type PERF_RECORD_SWITCH or
PERF_RECORD_SWITCH_CPU_WIDE.
--clang-path::
--clang-path=PATH::
Path to clang binary to use for compiling BPF scriptlets.
(enabled when BPF support is on)
--clang-opt::
--clang-opt=OPTIONS::
Options passed to clang when compiling BPF scriptlets.
(enabled when BPF support is on)
--vmlinux=PATH::
Specify vmlinux path which has debuginfo.
(enabled when BPF prologue is on)
SEE ALSO
--------
......
tools/perf/Documentation/perf-report.txt
View file @ 5cb52b5e
This diff is collapsed.
tools/perf/Documentation/perf-stat.txt
View file @ 5cb52b5e
This diff is collapsed.
tools/perf/Documentation/perf-top.txt
View file @ 5cb52b5e
......@@ -230,6 +230,9 @@ Default is to monitor all CPUS.
The various filters must be specified as a comma separated list: --branch-filter any_ret,u,k
Note that this feature may not be available on all processors.
--raw-trace::
When displaying traceevent output, do not use print fmt or plugins.
INTERACTIVE PROMPTING KEYS
--------------------------
......
tools/perf/Documentation/tips.txt 0 → 100644
View file @ 5cb52b5e
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tools/perf/MANIFEST
View file @ 5cb52b5e
This diff is collapsed.
tools/perf/Makefile.perf
View file @ 5cb52b5e
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tools/perf/arch/x86/include/arch-tests.h
View file @ 5cb52b5e
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tools/perf/arch/x86/tests/insn-x86.c
View file @ 5cb52b5e
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tools/perf/arch/x86/tests/intel-cqm.c
View file @ 5cb52b5e
This diff is collapsed.
tools/perf/arch/x86/tests/rdpmc.c
View file @ 5cb52b5e
This diff is collapsed.
tools/perf/arch/x86/util/Build
View file @ 5cb52b5e
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tools/perf/arch/x86/util/intel-bts.c
View file @ 5cb52b5e
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tools/perf/arch/x86/util/intel-pt.c
View file @ 5cb52b5e
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tools/perf/bench/futex-hash.c
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