- 16 Nov, 2014 14 commits
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Peter Zijlstra authored
This patch reorders fields in the perf_sample_data struct in order to minimize the number of cachelines touched in perf_sample_data_init(). It also removes some intializations which are redundant with the code in kernel/events/core.c Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Link: http://lkml.kernel.org/r/1411559322-16548-7-git-send-email-eranian@google.com Cc: cebbert.lkml@gmail.com Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: jolsa@redhat.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Stephane Eranian authored
Add -I/--intr-regs option to capture machine state registers at interrupt. Add the corresponding man page description Signed-off-by:
Stephane Eranian <eranian@google.com> Signed-off-by:
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Stephane Eranian authored
This patch updates the sample parsing test with support for the sampling of machine interrupted state. The patch modifies the do_test() code to sahred the sample regts bitmask between user and intr regs. Signed-off-by:
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Stephane Eranian authored
Add the infrastructure to setup, collect and report the interrupt machine state regs which can be captured by the kernel. Signed-off-by:
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Stephane Eranian authored
PEBS can capture machine state regs at retiremnt of the sampled instructions. When precise sampling is enabled on an event, PEBS is used, so substitute the interrupted state with the PEBS state. Note that not all registers are captured by PEBS. Those missing are replaced by the interrupt state counter-parts. Signed-off-by:
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Stephane Eranian authored
Enable capture of interrupted machine state for each sample. Registers to sample are passed per event in the sample_regs_intr bitmask. To sample interrupt machine state, the PERF_SAMPLE_INTR_REGS must be passed in sample_type. The list of available registers is arch dependent and provided by asm/perf_regs.h Registers are laid out as u64 in the order of the bit order of sample_intr_regs. This patch also adds a new ABI version PERF_ATTR_SIZE_VER4 because we extend the perf_event_attr struct with a new u64 field. Reviewed-by:
Jiri Olsa <jolsa@redhat.com> Signed-off-by:
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Andi Kleen authored
Disallow setting inv/cmask/etc. flags for all PEBS events on these CPUs, except for the UOPS_RETIRED.* events on Nehalem/Westmere, which are needed for cycles:p. This avoids an undefined situation strongly discouraged by the Intle SDM. The PLD_* events were already covered. This follows the earlier changes for Sandy Bridge and alter. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Signed-off-by:
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Andi Kleen authored
My earlier commit: 86a04461 ("perf/x86: Revamp PEBS event selection") made nearly all PEBS on Sandy/IvyBridge/Haswell to reject non zero flags. However this wasn't done for the INST_RETIRED.PREC_DIST event because no suitable macro existed. Now that we have INTEL_FLAGS_UEVENT_CONSTRAINT enforce zero flags for INST_RETIRED.PREC_DIST too. Signed-off-by:
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Andi Kleen authored
Add a FLAGS_UEVENT_CONSTRAINT macro that allows us to match on event+umask, and in additional all flags. This is needed to ensure the INV and CMASK fields are zero for specific events, as this can cause undefined behavior. Signed-off-by:
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Andi Kleen authored
Add scaling to MB/s to the memory controller read/write events for Sandy/IvyBridge/Haswell-EP similar to how the client does. This makes the events easier to use from the standard perf tool. Signed-off-by:
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Ingo Molnar authored
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Andi Kleen authored
There were several reports that on some systems writing the SBOX0 PMU initialization MSR would #GP at boot. This did not happen on all systems -- my two test systems booted fine. Writing the three initialization bits bit-by-bit seems to avoid the problem. So add a special callback to do just that. This replaces an earlier patch that disabled the SBOX. Reported-by:
Alexei Starovoitov <alexei.starovoitov@gmail.com> Reported-and-Tested-by:
Patrick Lu <patrick.lu@intel.com> Signed-off-by:
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Andi Kleen authored
The counter register offsets for the IRP box PMU for Haswell-EP were incorrect. The offsets actually changed over IvyBridge EP. Fix them to the correct values. For this we need to fork the read function from the IVB and use an own counter array. Tested-by: patrick.lu@intel.com Signed-off-by:
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Mark Rutland authored
When a CPU hotplugged out, we call perf_remove_from_context() (via perf_event_exit_cpu()) to rip each CPU-bound event out of its PMU's cpu context, but leave siblings grouped together. Freeing of these events is left to the mercy of the usual refcounting. When a CPU-bound event's refcount drops to zero we cross-call to __perf_remove_from_context() to clean it up, detaching grouped siblings. This works when the relevant CPU is online, but will fail if the CPU is currently offline, and we won't detach the event from its siblings before freeing the event, leaving the sibling list corrupt. If the sibling list is later walked (e.g. because the CPU cam online again before a remaining sibling's refcount drops to zero), we will walk the now corrupted siblings list, potentially dereferencing garbage values. Given that the events should never be scheduled again (as we removed them from their context), we can simply detatch siblings when the CPU goes down in the first place. If the CPU comes back online, the redundant call to __perf_remove_from_context() is safe. Reported-by:
Drew Richardson <drew.richardson@arm.com> Signed-off-by:
Mark Rutland <mark.rutland@arm.com> Signed-off-by:
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- 12 Nov, 2014 1 commit
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Aravind Gopalakrishnan authored
New Fam15h models carry extra feature bits and extend the MSR register space for IBS ops. Adding them here. While at it, add functionality to read IbsBrTarget and OpData4 depending on their availability if user wants a PERF_SAMPLE_RAW. Signed-off-by:
Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Acked-by:
Borislav Petkov <bp@suse.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Len Brown <len.brown@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: <paulus@samba.org> Cc: <acme@kernel.org> Link: http://lkml.kernel.org/r/1415651066-13523-1-git-send-email-Aravind.Gopalakrishnan@amd.comSigned-off-by:
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- 07 Nov, 2014 1 commit
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: Infrastructure changes: - Add gzip decompression support for kernel modules (Namhyung Kim) - More prep patches for Intel PT, including a a thread stack and more stuff made available via the database export mechanism (Adrian Hunter) - Optimize checking that tracepoint events are defined in perf script perl/python (Jiri Olsa) - Do not free pevent when deleting tracepoint evsel (Jiri Olsa) - Fix build-id matching for vmlinux (Namhyung Kim) Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
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- 06 Nov, 2014 4 commits
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Jiri Olsa authored
The libtraceevent library's main handle 'struct pevent' holds pointers of every event that was added to it via functions: pevent_parse_format pevent_parse_event We can't release struct event_format (call pevent_free_format) separately, because that breaks that pointers array mentioned above and another add_event call could end up with segfault. All added events are released within the handle cleanup in pevent_free. Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1415098538-1512-1-git-send-email-jolsa@kernel.orgSigned-off-by:
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Jiri Olsa authored
We don't need to maintain cache of 'struct event_format' objects. Currently the 'struct perf_evsel' holds this reference already. Adding events_defined bitmap to keep track of defined events, which is much cheaper than array of pointers. Signed-off-by:
Namhyung Kim <namhyung@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1414363445-22370-3-git-send-email-jolsa@kernel.orgSigned-off-by:
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Jiri Olsa authored
We don't need to maintain cache of 'struct event_format' objects. Currently the 'struct perf_evsel' holds this reference already. Adding events_defined bitmap to keep track of defined events, which is much cheaper than array of pointers. Signed-off-by:
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Jiri Olsa authored
Set a bit and return its old value. Stolen from kernel sources, will be used in next patches. Signed-off-by:
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- 05 Nov, 2014 6 commits
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Namhyung Kim authored
The previous patch changed kernel dso name from '[kernel.kallsyms]' to vmlinux. However it might add confusion to old users accustomed to the old name. So change the short name to '[kernel.vmlinux]' to reduce such confusion. Before: # Overhead Command Shared Object Symbol # ........ .............. ....................... ............................... # 9.83% swapper vmlinux [k] intel_idle 4.10% awk libc-2.20.so [.] __strcmp_sse2 1.86% sed libc-2.20.so [.] __strcmp_sse2 1.78% netctl-auto libc-2.20.so [.] __strcmp_sse2 1.23% netctl-auto libc-2.20.so [.] __mbrtowc 1.21% firefox libxul.so [.] 0x00000000024b62bd 1.20% swapper vmlinux [k] cpuidle_enter_state 1.03% sleep vmlinux [k] copy_user_generic_unrolled After: # Overhead Command Shared Object Symbol # ........ .............. ....................... ............................... # 9.83% swapper [kernel.vmlinux] [k] intel_idle 4.10% awk libc-2.20.so [.] __strcmp_sse2 1.86% sed libc-2.20.so [.] __strcmp_sse2 1.78% netctl-auto libc-2.20.so [.] __strcmp_sse2 1.23% netctl-auto libc-2.20.so [.] __mbrtowc 1.21% firefox libxul.so [.] 0x00000000024b62bd 1.20% swapper [kernel.vmlinux] [k] cpuidle_enter_state 1.03% sleep [kernel.vmlinux] [k] copy_user_generic_unrolled Signed-off-by:Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1415063674-17206-9-git-send-email-namhyung@kernel.orgSigned-off-by:
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Namhyung Kim authored
There's a problem on finding correct kernel symbols when perf report runs on a different kernel. Although a part of the problem was solved by the prior commit 0a7e6d1b ("perf tools: Check recorded kernel version when finding vmlinux"), there's a remaining problem still. When perf records samples, it synthesizes the kernel map using machine__mmap_name() and ref_reloc_sym like "[kernel.kallsyms]_text". You can easily see it using 'perf report -D' command. After finishing record, it goes through the recorded events to find maps/dsos actually used. And then record build-id info of them. During this process, it needs to load symbols in a dso and it'd call dso__load_vmlinux_path() since the default value of the symbol_conf. try_vmlinux_path is true. However it changes dso->long_name to a real path of the vmlinux file (e.g. /lib/modules/3.16.4/build/vmlinux) if one is running on a custom kernel. It resulted in that perf report reads the build-id of the vmlinux, but cannot use it since it only knows about the [kernel.kallsyms] map. It then falls back to possible vmlinux paths by using the recorded kernel version (in case of a recent version) or a running kernel silently. Even with the recent tools, this still has a possibility of breaking the result. As the build directory is a symbolic link, if one built a new kernel in the same directory with different source/config, the old link to vmlinux will point the new file. So it's absolutely needed to use build-id when finding a kernel image. In this patch, it's now changed to try to search a kernel dso in the existing dso list which was constructed during build-id table parsing so it'll always have a build-id. If not found, search "[kernel.kallsyms]". Before: $ perf report # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ............................... # 72.15% 0.00% swapper [kernel.kallsyms] [k] set_curr_task_rt 72.15% 0.00% swapper [kernel.kallsyms] [k] native_calibrate_tsc 72.15% 0.00% swapper [kernel.kallsyms] [k] tsc_refine_calibration_work 71.87% 71.87% swapper [kernel.kallsyms] [k] module_finalize ... After (for the same perf.data): 72.15% 0.00% swapper vmlinux [k] cpu_startup_entry 72.15% 0.00% swapper vmlinux [k] arch_cpu_idle 72.15% 0.00% swapper vmlinux [k] default_idle 71.87% 71.87% swapper vmlinux [k] native_safe_halt ... Signed-off-by:
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Namhyung Kim authored
When perf record finishes a session, it pre-processes samples in order to write build-id info from DSOs that had samples. During this process it'll call map__load() for the kernel map, and it ends up calling dso__load_vmlinux_path() which replaces dso->long_name. But this function checks kernel's build-id before searching vmlinux path so it'll end up with a cryptic name, the pathname for the entry in the ~/.debug cache, which can be confusing to users. This patch adds a flag to skip the build-id check during record, so that it'll have the original vmlinux path for the kernel dso->long_name, not the entry in the ~/.debug cache. Before: # perf record -va sleep 3 mmap size 528384B [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.196 MB perf.data (~8545 samples) ] Looking at the vmlinux_path (7 entries long) Using /home/namhyung/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 for symbols After: # perf record -va sleep 3 mmap size 528384B [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.193 MB perf.data (~8432 samples) ] Looking at the vmlinux_path (7 entries long) Using /lib/modules/3.16.4-1-ARCH/build/vmlinux for symbols Signed-off-by:
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Namhyung Kim authored
It'd be better managing those functions in a separate place as util/header.c file is already big. It now exports following 3 functions to others: bool perf_session__read_build_ids(struct perf_session *session, bool with_hits); int perf_session__write_buildid_table(struct perf_session *session, int fd); int perf_session__cache_build_ids(struct perf_session *session); Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/545733E7.6010105@intel.com Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1415063674-17206-5-git-send-email-namhyung@kernel.orgSigned-off-by:
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Namhyung Kim authored
The dsos__write_buildid_table() is not use struct dso and it mostly uses perf_session struct. So rename it to perf_session__write_buildid_ table() so that it corresponds to other related functions such as perf_session__read_build_ids() and perf_session__cache_build_ids(). Signed-off-by:
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Namhyung Kim authored
Now my Archlinux box shows module symbols correctly. Before: $ perf report --stdio Failed to open /tmp/perf-3477.map, continuing without symbols no symbols found in /usr/bin/date, maybe install a debug package? No kallsyms or vmlinux with build-id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 was found [drm] with build id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 not found, continuing without symbols No kallsyms or vmlinux with build-id edd931629094b660ca9dec09a1b635c8d87aa2ee was found [jbd2] with build id edd931629094b660ca9dec09a1b635c8d87aa2ee not found, continuing without symbols No kallsyms or vmlinux with build-id a7b1eada671c34933e5610bb920b2ca4945a82c3 was found [ext4] with build id a7b1eada671c34933e5610bb920b2ca4945a82c3 not found, continuing without symbols No kallsyms or vmlinux with build-id d69511fa3e5840e770336ef45b06c83fef8d74e3 was found [scsi_mod] with build id d69511fa3e5840e770336ef45b06c83fef8d74e3 not found, continuing without symbols No kallsyms or vmlinux with build-id af0430af13461af058770ee9b87afc07922c2e77 was found [libata] with build id af0430af13461af058770ee9b87afc07922c2e77 not found, continuing without symbols No kallsyms or vmlinux with build-id aaeedff8160ce631a5f0333591c6ff291201d29f was found [libahci] with build id aaeedff8160ce631a5f0333591c6ff291201d29f not found, continuing without symbols No kallsyms or vmlinux with build-id c57907712becaf662dc4981824bb372c0441d605 was found [mac80211] with build id c57907712becaf662dc4981824bb372c0441d605 not found, continuing without symbols No kallsyms or vmlinux with build-id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f was found [iwldvm] with build id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f not found, continuing without symbols No kallsyms or vmlinux with build-id 2d86086bf136bf374a2f029cf85a48194f9b950b was found [cfg80211] with build id 2d86086bf136bf374a2f029cf85a48194f9b950b not found, continuing without symbols No kallsyms or vmlinux with build-id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 was found [iwlwifi] with build id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 not found, continuing without symbols ... # # Overhead Command Shared Object Symbol # ........ ............... ....................... ........................................................ # 0.03% swapper [ext4] [k] 0x000000000000fe2e 0.03% swapper [kernel.kallsyms] [k] account_entity_enqueue 0.03% swapper [ext4] [k] 0x000000000000fc2b 0.03% irq/50-iwlwifi [iwlwifi] [k] 0x000000000000200b 0.03% swapper [kernel.kallsyms] [k] ktime_add_safe 0.03% swapper [kernel.kallsyms] [k] elv_completed_request 0.03% swapper [libata] [k] 0x0000000000003997 0.03% swapper [libahci] [k] 0x0000000000001f25 0.03% swapper [kernel.kallsyms] [k] rb_next 0.03% swapper [kernel.kallsyms] [k] blk_finish_request 0.03% swapper [ext4] [k] 0x0000000000010248 0.00% perf [kernel.kallsyms] [k] native_write_msr_safe After: $ perf report --stdio Failed to open /tmp/perf-3477.map, continuing without symbols no symbols found in /usr/bin/tr, maybe install a debug package? ... # # Overhead Command Shared Object Symbol # ........ ............... ........................... ...................................................... # 0.04% kworker/u16:3 [ext4] [k] ext4_read_block_bitmap 0.03% kworker/u16:0 [mac80211] [k] ieee80211_sta_reset_beacon_monitor 0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_get_bssid 0.02% firefox [e1000e] [k] __ew32_prepare 0.02% swapper [libahci] [k] ahci_handle_port_interrupt 0.02% emacs libglib-2.0.so.0.4000.0 [.] g_mutex_unlock 0.02% swapper [e1000e] [k] e1000_clean_tx_irq 0.02% dwm [kernel.kallsyms] [k] __schedule 0.02% gnome-terminal- [vdso] [.] __vdso_clock_gettime 0.02% swapper [e1000e] [k] e1000_alloc_rx_buffers 0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_rx 0.01% firefox [vdso] [.] __vdso_gettimeofday 0.01% irq/50-iwlwifi [iwlwifi] [k] iwl_pcie_rxq_restock.part.13 Signed-off-by:
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- 04 Nov, 2014 4 commits
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Namhyung Kim authored
This patch adds basic support to handle compressed kernel module as some distro (such as Archlinux) carries on it now. The actual work using compression library will be added later. Signed-off-by:
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Peter Zijlstra (Intel) authored
Because we're all human and typing sucks.. Fixes: 7fb0f1de ("perf/x86: Fix compile warnings for intel_uncore") Reported-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds authored
Pull pin-control fixes from Linus Walleij: "This kernel cycle has been calm for both pin control and GPIO so far but here are three pin control patches for you anyway, only really dealing with Baytrail: - Two fixes for the Baytrail driver affecting IRQs and output state in sysfs - Use the linux-gpio mailing list also for pinctrl patches" * tag 'pinctrl-v3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: baytrail: show output gpio state correctly on Intel Baytrail pinctrl: use linux-gpio mailing list pinctrl: baytrail: Clear DIRECT_IRQ bit -
git://git.linaro.org/people/mszyprowski/linux-dma-mappingLinus Torvalds authored
Pull CMA and DMA-mapping fixes from Marek Szyprowski: "This contains important fixes for recently introduced highmem support for default contiguous memory region used for dma-mapping subsystem" * 'fixes-for-v3.18' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: mm, cma: make parameters order consistent in func declaration and definition mm: cma: Use %pa to print physical addresses mm: cma: Ensure that reservations never cross the low/high mem boundary mm: cma: Always consider a 0 base address reservation as dynamic mm: cma: Don't crash on allocation if CMA area can't be activated
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- 03 Nov, 2014 10 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds authored
Pull ceph fixes from Sage Weil: "There is a GFP flag fix from Mike Christie, an error code fix from Jan, and fixes for two unnecessary allocations (kmalloc and workqueue) from Ilya. All are well tested. Ilya has one other fix on the way but it didn't get tested in time" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: libceph: eliminate unnecessary allocation in process_one_ticket() rbd: Fix error recovery in rbd_obj_read_sync() libceph: use memalloc flags for net IO rbd: use a single workqueue for all devices
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68kLinus Torvalds authored
Pull m68k update from Geert Uytterhoeven. Just wiring up the bpf system call. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: Wire up bpf
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: "A surprisingly small batch of fixes for -rc3. Suspiciously small, I'd say. Anyway, most of this are a few defconfig updates. Some for omap to deal with kernel binary size (moving ipv6 to module, etc). A larger one for socfpga that refreshes with some churn, but also turns on a few options that makes the newly-added board in my bootfarm usable for testing. OMAP3 will also now warn when booted with legacy (non-DT) boot protocols, hopefully encouraging those who still care about some of those platforms to submit DT support and report bugs where needed. Nothing stops working though, this is just to warn for future deprecation. Beyond this, very few actual bugfixes. A PXA fix for DEBUG_LL boot hangs, a missing terminting entry in a dt_match array on RealView a MTD fix on OMAP with NAND" [ Obviously missed rc3, will make rc4 instead ;) ] * tag 'armsoc-for-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: MAINTAINERS: drop list entry for davinci ARM: OMAP2+: Warn about deprecated legacy booting mode ARM: omap2plus_defconfig: Fix errors with NAND BCH ARM: multi_v7_defconfig: fix support for APQ8084 soc: versatile: Add terminating entry for realview_soc_of_match ARM: ixp4xx: remove compilation warnings in io.h MAINTAINERS: Add Soren as reviewer for Zynq ARM: omap2plus_defconfig: Fix bloat caused by having ipv6 built-in ARM: socfpga_defconfig: Update defconfig for SoCFPGA ARM: pxa: fix hang on startup with DEBUG_LL
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Adrian Hunter authored
Tracing for a workload begins before the comm event is seen, which results in the initial comm having a string of the form ":<pid>" (e.g. ":12345"). In order to export the correct string, defer the export until the new script 'flush' callback. Signed-off-by:
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Adrian Hunter authored
Add the ability to export detailed information about paired calls and returns to Python db export and the export-to-postgresql.py script. Signed-off-by:
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Adrian Hunter authored
Make it possible for the database export API to use the enhanced thread stack and export detailed information about paired calls and returns. Signed-off-by:
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Adrian Hunter authored
Add branch_type and in_tx to Python db export and the export-to-postgresql.py script. Signed-off-by:
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Adrian Hunter authored
Add the ability to export branch types through the database export facility. Signed-off-by:
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Adrian Hunter authored
Enhance the thread stack to output detailed information about paired calls and returns. The enhanced processing consumes sample information via thread_stack__process() and outputs information about paired calls / returns via a call-back. While the call-back makes it possible for the facility to be used by arbitrary tools, a subsequent patch will provide the information to Python scripting via the db-export interface. An important part of the call/return information is the call path which provides a structure that defines a context sensitive call graph. Note that there are now two ways to use the thread stack. For simply providing a call stack (like you would get from the perf record -g option) the interface consists of thread_stack__event() and thread_stack__sample(). Whereas the enhanced interface consists of call_return_processor__new() and thread_stack__process(). Signed-off-by:
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Adrian Hunter authored
Add a thread stack for synthesizing call chains from call and return events. Signed-off-by:
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