- 02 Dec, 2009 6 commits
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Frederic Weisbecker authored
When we disable a breakpoint through dr7, we unregister it right away, making us lose track of its corresponding address register value. It means that the following sequence would be unsupported: - set address in dr0 - enable it through dr7 - disable it through dr7 - enable it through dr7 because we lost the address register value when we disabled the breakpoint. Don't unregister the disabled breakpoints but rather disable them. Reported-by:
"K.Prasad" <prasad@linux.vnet.ibm.com> Signed-off-by:
Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1259735536-9236-1-git-send-regression-fweisbec@gmail.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Frederic Weisbecker authored
enter_syscall_print_##sname and exit_syscall_print_##sname don't need to have a global scope. Make them static. Signed-off-by:
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Jason Baron authored
The introduction of the new 'DECLARE_EVENT_CLASS()' obviates the need for the 'TRACE_EVENT()' macro in some cases. Thus, docbook style comments that used to live with 'TRACE_EVENT()' are now moved to 'DEFINE_EVENT()'. Thus, we need to make the docbook system understand the new 'DEFINE_EVENT()' macro. In addition I've tried to futureproof the patch, by also adding support for 'DEFINE_SINGLE_EVENT()', since there has been discussion about renaming: TRACE_EVENT() -> DEFINE_SINGLE_EVENT(). Without this patch the tracepoint docbook fails to build. I've verified that this patch correctly builds the tracepoint docbook which currently covers signals, and irqs. Changes in v2: - properly indent perl 'if' statements Signed-off-by:
Jason Baron <jbaron@redhat.com> Acked-by:
Steven Rostedt <rostedt@goodmis.org> Acked-by:
Randy Dunlap <randy.dunlap@oracle.com> Cc: William Cohen <wcohen@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <200912011718.nB1HIn7t011371@int-mx04.intmail.prod.int.phx2.redhat.com> Signed-off-by:
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Kristian Høgsberg authored
In the CONFIG_PERF_USE_VMALLOC case, perf_mmap_data_free() only schedules the cleanup of the perf_mmap_data struct. In that case we have to wait until the work has been done before we free data. Signed-off-by:
Kristian Høgsberg <krh@bitplanet.net> Cc: David S. Miller <davem@davemloft.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: <stable@kernel.org> LKML-Reference: <1259697901-1747-1-git-send-email-krh@bitplanet.net> Signed-off-by:
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Xiao Guangrong authored
Fix: cc1: warnings being treated as errors builtin-probe.c: In function 'cmd_probe': builtin-probe.c:163: error: unused variable 'fd' Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4B162089.8000907@cn.fujitsu.com> [ v2: use NO_LIBDWARF instead of __used ] Signed-off-by:
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Liming Wang authored
strndup is a GNU extension. So dont include string.h without defining _GNU_SOURCE (it results in a compile error otherwise). Remove these includes as util.h does it already. Signed-off-by:
Liming Wang <liming.wang@windriver.com> Acked-by:
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- 01 Dec, 2009 19 commits
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Lai Jiangshan authored
After duplications are removed, syscall_name_to_nr() is unused. Signed-off-by:
Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by:
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Lai Jiangshan authored
use only one prof_sysenter_enable() instead of prof_sysenter_enable_##sname() use only one prof_sysenter_disable() instead of prof_sysenter_disable_##sname() use only one prof_sysexit_enable() instead of prof_sysexit_enable_##sname() use only one prof_sysexit_disable() instead of prof_sysexit_disable_##sname() Signed-off-by:
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Lai Jiangshan authored
use only one init_syscall_trace instead of many init_enter_##sname()/init_exit_##sname() Signed-off-by:
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Lai Jiangshan authored
Add syscall_nr field to struct syscall_metadata, it helps us to get syscall number easier. Signed-off-by:
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Lai Jiangshan authored
use ->enter_event->id instead of ->enter_id use ->exit_event->id instead of ->exit_id Signed-off-by:
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Lai Jiangshan authored
Set event_enter_##sname->data to its metadata, it makes codes simpler. Signed-off-by:
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Lai Jiangshan authored
fix event_enter_##sname->event fix event_exit_##sname->event remove unused event_syscall_enter and event_syscall_exit Signed-off-by:
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Xiao Guangrong authored
In current code in perf_swevent_hrtimer(), data.period is not initialized, The result is obvious wrong: # ./perf record -f -e cpu-clock make # ./perf report # Samples: 1740 # # Overhead Command ...... # ........ ........ .......................................... # 1025422183050275328.00% sh libc-2.9.90.so ... 1025422183050275328.00% perl libperl.so ... 1025422168240043264.00% perl [kernel] ... 1025422030011210752.00% perl [kernel] ... Signed-off-by:
Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: <stable@kernel.org> LKML-Reference: <4B14E220.2050107@cn.fujitsu.com> Signed-off-by:
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Masami Hiramatsu authored
Simplify event naming as <symbol>_<seqnum>. Each event name is globally unique (group name is not checked). So, if there is schedule_0, next probe event on schedule() will be schedule_1. Signed-off-by:
Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091201002024.10235.2353.stgit@harusame> Signed-off-by:
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Masami Hiramatsu authored
Add --list option for listing currently defined probe events in the kernel. This shows events in below format; [group:event] <perf-probe probe-definition> for example: [probe:schedule_0] schedule+30 cpu Note that source file/line information is not supported yet. So even if you added a probe by line, it will be shown in <symbol+offset>. Signed-off-by:
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Masami Hiramatsu authored
Add argv_split() ported from lib/argv_split.c to string.c and use it in util/probe-event.c. Signed-off-by:
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Masami Hiramatsu authored
Split probe event (kprobe-events and perf probe events) utility functions from builtin-probe.c to probe-event.c. Signed-off-by:
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Masami Hiramatsu authored
Fix the index of formatted probe array for multiple probe points, which should be probes[i] instead of probes[0]. Signed-off-by:
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Masami Hiramatsu authored
Since the syntax has been changed, probe definition needs parameters less than MAX_PROBE_ARGS + 1 (probe-point + arguments). Signed-off-by:
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Masami Hiramatsu authored
Add probe-finder.h as LIB_H without libdwarf, because that header is included even if no libdwarf. Signed-off-by:
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Masami Hiramatsu authored
Change annoying debug-info using notice from pr_info() to pr_debug(), since the message always printed when user adds a probe point which requires debug-info. Signed-off-by:
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Masami Hiramatsu authored
Fix a memory leak case in create_trace_probe(). When an argument is too long (> MAX_ARGSTR_LEN), it just jumps to error path. In that case tp->args[i].name is not released. This also fixes a bug to check kstrdup()'s return value. Signed-off-by:
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Li Zefan authored
Convert builtin-timechart.c to mmap_dispatch_perf_file() + perf_file_handler. Signed-off-by:
Li Zefan <lizf@cn.fujitsu.com> Acked-by:
Arjan van de Ven <arjan@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4B14B21C.2040406@cn.fujitsu.com> [ v2: cleaned up the printout, fixed a whitespace detail ] Signed-off-by:
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Li Zefan authored
perf-annotate doesn't parse perf.data correctly in that it doesn't read perf header. Fix this by using mmap_dispatch_perf_file(). Before: TOTAL events: 17565 MMAP events: 3221 LOST events: 10 COMM events: 235 EXIT events: 2 THROTTLE events: 1 UNTHROTTLE events: 2 FORK events: 10 READ events: 1 SAMPLE events: 14083 After: TOTAL events: 17290 MMAP events: 3203 LOST events: 0 COMM events: 234 EXIT events: 1 THROTTLE events: 0 UNTHROTTLE events: 0 FORK events: 0 READ events: 0 SAMPLE events: 13852 Signed-off-by:
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- 27 Nov, 2009 15 commits
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Arnaldo Carvalho de Melo authored
Now we have a very high level routine for simple tools to process IP sample events: int event__preprocess_sample(const event_t *self, struct addr_location *al, symbol_filter_t filter) It receives the event itself and will insert new threads in the global threads list and resolve the map and symbol, filling all this info into the new addr_location struct, so that tools like annotate and report can further process the event by creating hist_entries in their specific way (with or without callgraphs, etc). It in turn uses the new next layer function: void thread__find_addr_location(struct thread *self, u8 cpumode, enum map_type type, u64 addr, struct addr_location *al, symbol_filter_t filter) This one will, given a thread (userspace or the kernel kthread one), will find the given type (MAP__FUNCTION now, MAP__VARIABLE too in the near future) at the given cpumode, taking vdsos into account (userspace hit, but kernel symbol) and will fill all these details in the addr_location given. Tools that need a more compact API for plain function resolution, like 'kmem', can use this other one: struct symbol *thread__find_function(struct thread *self, u64 addr, symbol_filter_t filter) So, to resolve a kernel symbol, that is all the 'kmem' tool needs, its just a matter of calling: sym = thread__find_function(kthread, addr, NULL); The 'filter' parameter is needed because we do lazy parsing/loading of ELF symtabs or /proc/kallsyms. With this we remove more code duplication all around, which is always good, huh? :-) Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: John Kacur <jkacur@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1259346563-12568-12-git-send-email-acme@infradead.org> Signed-off-by:
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Arnaldo Carvalho de Melo authored
While implementing event__preprocess_sample, that will do all of the symbol lookup in one convenient function, I noticed that util/process_event.[ch] were not being used at all, then started looking if there were other functions that could be shared and... All those functions really don't need to receive offset + head, the only thing they did was common to all of them, so do it at one place instead. Stats about number of each type of event processed now is done in a central place. Signed-off-by:
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Arnaldo Carvalho de Melo authored
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Arnaldo Carvalho de Melo authored
Making the routines that were so far specific to the kernel maps useful for all threads. This is done by making the kernel maps be contained in a kernel "thread". This gets the kernel specific routines closer to the userspace counterparts, which will help in reducing the boilerplate for resolving a symbol, as will be demonstrated in the next patches. Signed-off-by:
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Arnaldo Carvalho de Melo authored
So that we can support multiple symbol table types. Signed-off-by:
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Arnaldo Carvalho de Melo authored
So that the kallsyms loading routines are the direct counterpart of the vmlinux loading ones, i.e. dso__load_kallsyms is the counterpart of dso__load_vmlinux. In the process make them also use the symbols rb tree indexed by map->type, paving the way for supporting other types of symtabs, such as the next one to be supported: variables. This also allowed removal of yet another global variable: kernel_map__functions. Signed-off-by:
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Arnaldo Carvalho de Melo authored
By using an array of rb_roots in struct dso we can, from a struct map instance to get the right symbol rb_tree more easily. This way we can have just one symbol lookup method for struct map instances, map__find_symbol, instead of one per symtab type (functions, variables). Signed-off-by:
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Arnaldo Carvalho de Melo authored
That way we will be able to check if the right symtab is loaded in the underlying DSO. Signed-off-by:
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Arnaldo Carvalho de Melo authored
perf annotate was the only user, and it doesn't really need it. Signed-off-by:
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Arnaldo Carvalho de Melo authored
We don't need to look at modules in dsos__findnew because the kernel events come only with user DSOs. Also we need a way to list just the module DSOs so that we can create multiple sets of maps, now that we will support maps for the variables in a symtab. Signed-off-by:
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Arnaldo Carvalho de Melo authored
As we'll have kernel_map[s]__variables too. Signed-off-by:
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Arnaldo Carvalho de Melo authored
This should be properly fixed when we remove the XXX comment in 'perf report', function resolve_symbol. Signed-off-by:
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Lai Jiangshan authored
"symbol_name+0" is not so friendly. It makes the output longer. Signed-off-by:
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Lai Jiangshan authored
Sometimes the group name is not "kprobes", It'll be better if we can read it from tracing/kprobe_events. # echo 'r:laijs/vfs_read vfs_read %ax' > kprobe_events # cat kprobe_events r:laijs/vfs_read vfs_read %ax=%ax Signed-off-by:
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Lai Jiangshan authored
tp->nr_args is not set before we "goto error", it causes memory leak for free_trace_probe() use tp->nr_args to free memory of args. Signed-off-by:
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