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2023-11-27perf script perl: Fail check on dynamic allocationzhaimingbing1-0/+3
Return ENOMEM when dynamic allocation failed. Reviewed-by: Ian Rogers <[email protected]> Signed-off-by: zhaimingbing <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Li Dong <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sean Christopherson <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2023-06-12perf callchain: Use pthread keys for tls callchain_cursorIan Rogers1-4/+7
Pthread keys are more portable than __thread and allow the association of a destructor with the key. Use the destructor to clean up TLS callchain cursors to aid understanding memory leaks. Committer notes: Had to fixup a series of unconverted places and also check for the return of get_tls_callchain_cursor() as it may fail and return NULL. In that unlikely case we now either print something to a file, if the caller was expecting to print a callchain, or return an error code to state that resolving the callchain isn't possible. In some cases this was made easier because thread__resolve_callchain() already can fail for other reasons, so this new one (cursor == NULL) can be added and the callers don't have to explicitely check for this new condition. Signed-off-by: Ian Rogers <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Ali Saidi <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Athira Rajeev <[email protected]> Cc: Brian Robbins <[email protected]> Cc: Changbin Du <[email protected]> Cc: Dmitrii Dolgov <[email protected]> Cc: Fangrui Song <[email protected]> Cc: German Gomez <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Ivan Babrou <[email protected]> Cc: James Clark <[email protected]> Cc: Jing Zhang <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: John Garry <[email protected]> Cc: K Prateek Nayak <[email protected]> Cc: Kan Liang <[email protected]> Cc: Leo Yan <[email protected]> Cc: Liam Howlett <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Miguel Ojeda <[email protected]> Cc: Mike Leach <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Naveen N. Rao <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Ravi Bangoria <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Steinar H. Gunderson <[email protected]> Cc: Suzuki Poulouse <[email protected]> Cc: Wenyu Liu <[email protected]> Cc: Will Deacon <[email protected]> Cc: Yang Jihong <[email protected]> Cc: Ye Xingchen <[email protected]> Cc: Yuan Can <[email protected]> Cc: [email protected] Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2023-05-28perf scripting-engines: Move static to local variable, remove 16384 from .bssIan Rogers1-2/+2
Avoid 16,384 bytes in .bss by stack allocating two bitmaps. Signed-off-by: Ian Rogers <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: K Prateek Nayak <[email protected]> Cc: Kan Liang <[email protected]> Cc: Leo Yan <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Ravi Bangoria <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Steven Rostedt (VMware) <[email protected]> Cc: Tiezhu Yang <[email protected]> Cc: Yang Jihong <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2023-04-04perf map: Add accessor for dsoIan Rogers1-4/+6
Later changes will add reference count checking for struct map, with dso being the most frequently accessed variable. Add an accessor so that the reference count check is only necessary in one place. Additional changes: - add a dso variable to avoid repeated map__dso calls. - in builtin-mem.c dump_raw_samples, code only partially tested for dso == NULL. Make the possibility of NULL consistent. - in thread.c thread__memcpy fix use of spaces and use tabs. Committer notes: Did missing conversions on these files: tools/perf/arch/powerpc/util/skip-callchain-idx.c tools/perf/arch/powerpc/util/sym-handling.c tools/perf/ui/browsers/hists.c tools/perf/ui/gtk/annotate.c tools/perf/util/cs-etm.c tools/perf/util/thread.c tools/perf/util/unwind-libunwind-local.c tools/perf/util/unwind-libunwind.c Signed-off-by: Ian Rogers <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexey Bayduraev <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Andy Shevchenko <[email protected]> Cc: Darren Hart <[email protected]> Cc: Davidlohr Bueso <[email protected]> Cc: Dmitriy Vyukov <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: German Gomez <[email protected]> Cc: Hao Luo <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: James Clark <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: John Garry <[email protected]> Cc: Kajol Jain <[email protected]> Cc: Kan Liang <[email protected]> Cc: Leo Yan <[email protected]> Cc: Madhavan Srinivasan <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Miaoqian Lin <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Riccardo Mancini <[email protected]> Cc: Shunsuke Nakamura <[email protected]> Cc: Song Liu <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Stephen Brennan <[email protected]> Cc: Steven Rostedt (VMware) <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Thomas Richter <[email protected]> Cc: Yury Norov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2023-01-19perf trace: Reduce #ifdefs for TEP_FIELD_IS_RELATIVEIan Rogers1-3/+1
Add a helper function that applies the mask to test, or returns false if libtraceevent is too old or not present. Signed-off-by: Ian Rogers <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Athira Jajeev <[email protected]> Cc: Eelco Chaudron <[email protected]> Cc: German Gomez <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kan Liang <[email protected]> Cc: Kim Phillips <[email protected]> Cc: Leo Yan <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Yang Jihong <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2023-01-19perf tools: Remove HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVEIan Rogers1-1/+1
Switch HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE to be a version number test on libtraceevent being >= to version 1.5.0. This also corrects a greater-than test to be greater-than-or-equal. Fixes: b9a49f8cb02f0859 ("perf tools: Check if libtracevent has TEP_FIELD_IS_RELATIVE") Signed-off-by: Ian Rogers <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Athira Jajeev <[email protected]> Cc: Eelco Chaudron <[email protected]> Cc: German Gomez <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kan Liang <[email protected]> Cc: Kim Phillips <[email protected]> Cc: Leo Yan <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Yang Jihong <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2022-12-14perf tools: Check if libtracevent has TEP_FIELD_IS_RELATIVEArnaldo Carvalho de Melo1-0/+2
Some distros have older versions of libtraceevent where TEP_FIELD_IS_RELATIVE and its associated semantics are not present, so we need to check if the version has it, it was introduced in libtraceevent 1.5.0. Reported-by: Athira Jajeev <[email protected]> Tested-by: Athira Jajeev <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Ian Rogers <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Peter Zijlstra <[email protected]>, Cc: Stephane Eranian <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2022-12-14perf build: Use libtraceevent from the systemIan Rogers1-0/+1
Remove the LIBTRACEEVENT_DYNAMIC and LIBTRACEFS_DYNAMIC make command line variables. If libtraceevent isn't installed or NO_LIBTRACEEVENT=1 is passed to the build, don't compile in libtraceevent and libtracefs support. This also disables CONFIG_TRACE that controls "perf trace". CONFIG_LIBTRACEEVENT is used to control enablement in Build/Makefiles, HAVE_LIBTRACEEVENT is used in C code. Without HAVE_LIBTRACEEVENT tracepoints are disabled and as such the commands kmem, kwork, lock, sched and timechart are removed. The majority of commands continue to work including "perf test". Committer notes: Fixed up a tools/perf/util/Build reject and added: #include <traceevent/event-parse.h> to tools/perf/util/scripting-engines/trace-event-perl.c. Committer testing: $ rpm -qi libtraceevent-devel Name : libtraceevent-devel Version : 1.5.3 Release : 2.fc36 Architecture: x86_64 Install Date: Mon 25 Jul 2022 03:20:19 PM -03 Group : Unspecified Size : 27728 License : LGPLv2+ and GPLv2+ Signature : RSA/SHA256, Fri 15 Apr 2022 02:11:58 PM -03, Key ID 999f7cbf38ab71f4 Source RPM : libtraceevent-1.5.3-2.fc36.src.rpm Build Date : Fri 15 Apr 2022 10:57:01 AM -03 Build Host : buildvm-x86-05.iad2.fedoraproject.org Packager : Fedora Project Vendor : Fedora Project URL : https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/ Bug URL : https://bugz.fedoraproject.org/libtraceevent Summary : Development headers of libtraceevent Description : Development headers of libtraceevent-libs $ Default build: $ ldd ~/bin/perf | grep tracee libtraceevent.so.1 => /lib64/libtraceevent.so.1 (0x00007f1dcaf8f000) $ # perf trace -e sched:* --max-events 10 0.000 migration/0/17 sched:sched_migrate_task(comm: "", pid: 1603763 (perf), prio: 120, dest_cpu: 1) 0.005 migration/0/17 sched:sched_wake_idle_without_ipi(cpu: 1) 0.011 migration/0/17 sched:sched_switch(prev_comm: "", prev_pid: 17 (migration/0), prev_state: 1, next_comm: "", next_prio: 120) 1.173 :0/0 sched:sched_wakeup(comm: "", pid: 3138 (gnome-terminal-), prio: 120) 1.180 :0/0 sched:sched_switch(prev_comm: "", prev_prio: 120, next_comm: "", next_pid: 3138 (gnome-terminal-), next_prio: 120) 0.156 migration/1/21 sched:sched_migrate_task(comm: "", pid: 1603763 (perf), prio: 120, orig_cpu: 1, dest_cpu: 2) 0.160 migration/1/21 sched:sched_wake_idle_without_ipi(cpu: 2) 0.166 migration/1/21 sched:sched_switch(prev_comm: "", prev_pid: 21 (migration/1), prev_state: 1, next_comm: "", next_prio: 120) 1.183 :0/0 sched:sched_wakeup(comm: "", pid: 1602985 (kworker/u16:0-f), prio: 120, target_cpu: 1) 1.186 :0/0 sched:sched_switch(prev_comm: "", prev_prio: 120, next_comm: "", next_pid: 1602985 (kworker/u16:0-f), next_prio: 120) # Had to tweak tools/perf/util/setup.py to make sure the python binding shared object links with libtraceevent if -DHAVE_LIBTRACEEVENT is present in CFLAGS. Building with NO_LIBTRACEEVENT=1 uncovered some more build failures: - Make building of data-convert-bt.c to CONFIG_LIBTRACEEVENT=y - perf-$(CONFIG_LIBTRACEEVENT) += scripts/ - bpf_kwork.o needs also to be dependent on CONFIG_LIBTRACEEVENT=y - The python binding needed some fixups and util/trace-event.c can't be built and linked with the python binding shared object, so remove it in tools/perf/util/setup.py and exclude it from the list of dependencies in the python/perf.so Makefile.perf target. Building without libtraceevent-devel installed uncovered more build failures: - The python binding tools/perf/util/python.c was assuming that traceevent/parse-events.h was always available, which was the case when we defaulted to using the in-kernel tools/lib/traceevent/ files, now we need to enclose it under ifdef HAVE_LIBTRACEEVENT, just like the other parts of it that deal with tracepoints. - We have to ifdef the rules in the Build files with CONFIG_LIBTRACEEVENT=y to build builtin-trace.c and tools/perf/trace/beauty/ as we only ifdef setting CONFIG_TRACE=y when setting NO_LIBTRACEEVENT=1 in the make command line, not when we don't detect libtraceevent-devel installed in the system. Simplification here to avoid these two ways of disabling builtin-trace.c and not having CONFIG_TRACE=y when libtraceevent-devel isn't installed is the clean way. From Athira: <quote> tools/perf/arch/powerpc/util/Build -perf-y += kvm-stat.o +perf-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o </quote> Then, ditto for arm64 and s390, detected by container cross build tests. - s/390 uses test__checkevent_tracepoint() that is now only available if HAVE_LIBTRACEEVENT is defined, enclose the callsite with ifder HAVE_LIBTRACEEVENT. Also from Athira: <quote> With this change, I could successfully compile in these environment: - Without libtraceevent-devel installed - With libtraceevent-devel installed - With “make NO_LIBTRACEEVENT=1” </quote> Then, finally rename CONFIG_TRACEEVENT to CONFIG_LIBTRACEEVENT for consistency with other libraries detected in tools/perf/. Signed-off-by: Ian Rogers <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Tested-by: Athira Rajeev <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2022-12-05perf tools: Use dedicated non-atomic clear/set bit helpersSean Christopherson1-1/+1
Use the dedicated non-atomic helpers for {clear,set}_bit() and their test variants, i.e. the double-underscore versions. Depsite being defined in atomic.h, and despite the kernel versions being atomic in the kernel, tools' {clear,set}_bit() helpers aren't actually atomic. Move to the double-underscore versions so that the versions that are expected to be atomic (for kernel developers) can be made atomic without affecting users that don't want atomic operations. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Acked-by: Namhyung Kim <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andy Shevchenko <[email protected]> Cc: James Morse <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Marc Zyngier <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Oliver Upton <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Suzuki Poulouse <[email protected]> Cc: Yury Norov <[email protected]> Cc: alexandru elisei <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2021-12-06tools/perf: Add '__rel_loc' event field parsing supportMasami Hiramatsu1-0/+2
Add new '__rel_loc' dynamic data location attribute support. This type attribute is similar to the '__data_loc' but records the offset from the field itself. The libtraceevent adds TEP_FIELD_IS_RELATIVE to the 'tep_format_field::flags' with TEP_FIELD_IS_DYNAMIC for'__rel_loc'. Link: https://lkml.kernel.org/r/163757344810.510314.12449413842136229871.stgit@devnote2 Cc: Beau Belgrave <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Tom Zanussi <[email protected]> Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2021-06-01perf scripting: Add perf_session to scripting_contextAdrian Hunter1-1/+4
This is preparation for allowing a script to set the itrace options for the session if they have not already been set. Signed-off-by: Adrian Hunter <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2021-06-01perf scripting: Add scripting_context__update()Adrian Hunter1-4/+2
Move scripting_context update to a separate function and add the arguments of ->process_event() to it. This prepares the way for adding more methods to the perf_trace_context module, by providing the context information that they will need. Signed-off-by: Adrian Hunter <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2021-05-25perf scripting python: Add 'addr_location' for 'addr'Adrian Hunter1-1/+2
If sample addr correlates to a symbol, add "addr_dso", "addr_symbol", and "addr_symoff" to python scripting. Signed-off-by: Adrian Hunter <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2021-05-25perf script: Find script file relative to exec pathAdrian Hunter1-0/+1
Allow perf script to find a script in the exec path. Example: Before: $ perf record -a -e intel_pt/branch=0/ sleep 0.1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.954 MB perf.data ] $ perf script intel-pt-events.py 2>&1 | head -3 Error: Couldn't find script `intel-pt-events.py' See perf script -l for available scripts. $ perf script -s intel-pt-events.py 2>&1 | head -3 Can't open python script "intel-pt-events.py": No such file or directory $ perf script ~/libexec/perf-core/scripts/python/intel-pt-events.py 2>&1 | head -3 Error: Couldn't find script `/home/ahunter/libexec/perf-core/scripts/python/intel-pt-events.py' See perf script -l for available scripts. $ After: $ perf script intel-pt-events.py 2>&1 | head -3 Intel PT Power Events and PTWRITE perf 8123/8123 [000] 551.230753986 cbr: 42 freq: 4219 MHz (156%) 0 [unknown] ([unknown]) perf 8123/8123 [001] 551.230808216 cbr: 42 freq: 4219 MHz (156%) 0 [unknown] ([unknown]) $ perf script -s intel-pt-events.py 2>&1 | head -3 Intel PT Power Events and PTWRITE perf 8123/8123 [000] 551.230753986 cbr: 42 freq: 4219 MHz (156%) 0 [unknown] ([unknown]) perf 8123/8123 [001] 551.230808216 cbr: 42 freq: 4219 MHz (156%) 0 [unknown] ([unknown]) $ perf script ~/libexec/perf-core/scripts/python/intel-pt-events.py 2>&1 | head -3 Intel PT Power Events and PTWRITE perf 8123/8123 [000] 551.230753986 cbr: 42 freq: 4219 MHz (156%) 0 [unknown] ([unknown]) perf 8123/8123 [001] 551.230808216 cbr: 42 freq: 4219 MHz (156%) 0 [unknown] ([unknown]) $ Signed-off-by: Adrian Hunter <[email protected]> Acked-by: Jiri Olsa <[email protected]> Link: http://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-11-12perf callchain: Use 'struct map_symbol' in 'struct callchain_cursor_node'Arnaldo Carvalho de Melo1-8/+8
To ease passing around map+symbol, just like done for other parts of the tree recently. Cc: Adrian Hunter <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-10-18perf scripting engines: Iterate on tep event arrays directlySteven Rostedt (VMware)1-2/+6
Instead of calling a useless (and broken) helper function to get the next event of a tep event array, just get the array directly and iterate over it. Note, the broken part was from trace_find_next_event() which after this will no longer be used, and can be removed. Committer notes: This fixes a segfault when generating python scripts from perf.data files with multiple tracepoint events, i.e. the following use case is fixed by this patch: # perf record -e sched:* sleep 1 [ perf record: Woken up 31 times to write data ] [ perf record: Captured and wrote 0.031 MB perf.data (9 samples) ] # perf script -g python Segmentation fault (core dumped) # Reported-by: Daniel Bristot de Oliveira <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Tzvetomir Stoyanov <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Link: http://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-31perf dsos: Move the dsos struct and its methods to separate source filesArnaldo Carvalho de Melo1-0/+1
So that we can reduce the header dependency tree further, in the process noticed that lots of places were getting even things like build-id routines and 'struct perf_tool' definition indirectly, so fix all those too. Cc: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-29perf tools: Remove perf.h from source files not needing itArnaldo Carvalho de Melo1-1/+0
With the movement of lots of stuff out of perf.h to other headers we ended up not needing it in lots of places, remove it from those places. Cc: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-07-29libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evselJiri Olsa1-3/+3
Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexey Budankov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Michael Petlan <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-07-29perf evsel: Rename struct perf_evsel to struct evselJiri Olsa1-4/+4
Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexey Budankov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Michael Petlan <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-04-01perf tools, tools lib traceevent: Rename "pevent" member of struct tep_event ↵Tzvetomir Stoyanov1-1/+1
to "tep" The member "pevent" of the struct tep_event is renamed to "tep". This makes the struct consistent with the chosen naming convention: tep (trace event parser), instead of the old pevent. Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-02-06perf tools: Add missing include for symbols.hArnaldo Carvalho de Melo1-0/+1
Several places were using definitions found in symbols.h but not including it, getting it by sheer luck from some other headers that now are in the process of removing that include because they don't need it or because simply having struct forward declarations is enough, fix it. Cc: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-02-06pref tools: Add missing map.h includesArnaldo Carvalho de Melo1-0/+1
Lots of places get the map.h file indirectly, and since we're going to remove it from machine.h, then those need to include it directly, do it now, before we remove that dep. Cc: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2018-12-17tools lib traceevent, perf tools: Rename 'struct tep_event_format' to ↵Tzvetomir Stoyanov1-3/+3
'struct tep_event' In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. This renames 'struct tep_event_format' to 'struct tep_event', which describes more closely the purpose of the struct. Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> [ Fixup conflict with 6e33c250a88f ("tools lib traceevent: Fix compile warnings in tools/lib/traceevent/event-parse.c") ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2018-09-19tools lib traceevent, perf tools: Rename enum print_arg_type to enum ↵Tzvetomir Stoyanov (VMware)1-16/+16
tep_print_arg_type In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_". This renames enum print_arg_type to enum tep_print_arg_type and add prefix TEP_ to all its members. Signed-off-by: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2018-09-19tools lib traceevent, perf tools: Add prefix tep_ to all print_* structuresTzvetomir Stoyanov (VMware)1-3/+3
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_". This adds prefix tep_ to all print_* structures Signed-off-by: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2018-09-19tools lib traceevent, perf tools: Rename enum format_flags to enum ↵Tzvetomir Stoyanov (VMware)1-9/+9
tep_format_flags In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_". This renames enum format_flags to enum tep_format_flags and adds prefix TEP_ to all of its members. Signed-off-by: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2018-09-19tools lib traceevent, perf tools: Rename struct format{_field} to struct ↵Tzvetomir Stoyanov (VMware)1-2/+2
tep_format{_field} In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_". This renames struct format to struct tep_format and struct format_field to struct tep_format_field Signed-off-by: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2018-09-19tools lib traceevent, perf tools: Rename struct event_format to struct ↵Tzvetomir Stoyanov (VMware)1-3/+3
tep_event_format In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_". This renames struct event_format to struct tep_event_format Signed-off-by: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2018-08-10tools lib traceevent, perf tools: Rename struct pevent to struct tep_handleTzvetomir Stoyanov (VMware)1-1/+1
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes the struct pevent to struct tep_handle. Signed-off-by: Tzvetomir Stoyanov (VMware) <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Yordan Karadzhov (VMware) <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-04-26perf tools: Move HAS_BOOL define to where perl headers are usedArnaldo Carvalho de Melo1-1/+3
This is a perl specific hack, so move it from util.h to where perl headers are used. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-04-19perf tools: Including missing inttypes.h headerArnaldo Carvalho de Melo1-0/+1
Needed to use the PRI[xu](32,64) formatting macros. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-02-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds1-0/+1
Pull networking updates from David Miller: "Highlights: 1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini Varadhan. 2) Simplify classifier state on sk_buff in order to shrink it a bit. From Willem de Bruijn. 3) Introduce SIPHASH and it's usage for secure sequence numbers and syncookies. From Jason A. Donenfeld. 4) Reduce CPU usage for ICMP replies we are going to limit or suppress, from Jesper Dangaard Brouer. 5) Introduce Shared Memory Communications socket layer, from Ursula Braun. 6) Add RACK loss detection and allow it to actually trigger fast recovery instead of just assisting after other algorithms have triggered it. From Yuchung Cheng. 7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot. 8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert. 9) Export MPLS packet stats via netlink, from Robert Shearman. 10) Significantly improve inet port bind conflict handling, especially when an application is restarted and changes it's setting of reuseport. From Josef Bacik. 11) Implement TX batching in vhost_net, from Jason Wang. 12) Extend the dummy device so that VF (virtual function) features, such as configuration, can be more easily tested. From Phil Sutter. 13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric Dumazet. 14) Add new bpf MAP, implementing a longest prefix match trie. From Daniel Mack. 15) Packet sample offloading support in mlxsw driver, from Yotam Gigi. 16) Add new aquantia driver, from David VomLehn. 17) Add bpf tracepoints, from Daniel Borkmann. 18) Add support for port mirroring to b53 and bcm_sf2 drivers, from Florian Fainelli. 19) Remove custom busy polling in many drivers, it is done in the core networking since 4.5 times. From Eric Dumazet. 20) Support XDP adjust_head in virtio_net, from John Fastabend. 21) Fix several major holes in neighbour entry confirmation, from Julian Anastasov. 22) Add XDP support to bnxt_en driver, from Michael Chan. 23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan. 24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi. 25) Support GRO in IPSEC protocols, from Steffen Klassert" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits) Revert "ath10k: Search SMBIOS for OEM board file extension" net: socket: fix recvmmsg not returning error from sock_error bnxt_en: use eth_hw_addr_random() bpf: fix unlocking of jited image when module ronx not set arch: add ARCH_HAS_SET_MEMORY config net: napi_watchdog() can use napi_schedule_irqoff() tcp: Revert "tcp: tcp_probe: use spin_lock_bh()" net/hsr: use eth_hw_addr_random() net: mvpp2: enable building on 64-bit platforms net: mvpp2: switch to build_skb() in the RX path net: mvpp2: simplify MVPP2_PRS_RI_* definitions net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT net: mvpp2: remove unused register definitions net: mvpp2: simplify mvpp2_bm_bufs_add() net: mvpp2: drop useless fields in mvpp2_bm_pool and related code net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue' net: mvpp2: release reference to txq_cpu[] entry after unmapping net: mvpp2: handle too large value in mvpp2_rx_time_coal_set() net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set() net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set ...
2017-02-13perf symbols: dso->name is an array, no need to check it against NULLArnaldo Carvalho de Melo1-2/+2
As it will always evaluate to 'true', as reported by clang: util/map.c:390:36: error: address of array 'map->dso->name' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion] if (map && map->dso && (map->dso->name || map->dso->long_name)) { ~~~~~~~~~~^~~~ ~~ util/map.c:393:22: error: address of array 'map->dso->name' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion] else if (map->dso->name) ~~ ~~~~~~~~~~^~~~ Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-01-26perf scripting perl: Do not die() when not founding event for a typeArnaldo Carvalho de Melo1-2/+4
Do just like handling other cases i.e. print some debug message and ignore the sample. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-01-25lib, traceevent: add PRINT_HEX_STR variantDaniel Borkmann1-0/+1
Add support for the __print_hex_str() macro that was added for tracing, so that user space tools such as perf can understand it as well. Signed-off-by: Daniel Borkmann <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2016-08-23tools: Introduce tools/include/linux/time64.h for *SEC_PER_*SEC macrosArnaldo Carvalho de Melo1-2/+3
And remove it from tools/perf/{perf,util}.h, making code that needs these macros to include linux/time64.h instead, to match how this is used in the kernel sources. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-05-20perf tools: Fix usage of max_stack sysctlArnaldo Carvalho de Melo1-2/+1
We cannot limit processing stacks from the current value of the sysctl, as we may be processing perf.data files, possibly from other machines. Instead use the old PERF_MAX_STACK_DEPTH, the sysctl default, that can be overriden using --max-stack or equivalent. Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: He Kuang <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Milian Wolff <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vince Weaver <[email protected]> Cc: Wang Nan <[email protected]> Cc: Zefan Li <[email protected]> Fixes: 4cb93446c587 ("perf tools: Set the maximum allowed stack from /proc/sys/kernel/perf_event_max_stack") Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-04-27perf tools: Set the maximum allowed stack from ↵Arnaldo Carvalho de Melo1-1/+1
/proc/sys/kernel/perf_event_max_stack There is an upper limit to what tooling considers a valid callchain, and it was tied to the hardcoded value in the kernel, PERF_MAX_STACK_DEPTH (127), now that this can be tuned via a sysctl, make it read it and use that as the upper limit, falling back to PERF_MAX_STACK_DEPTH for kernels where this sysctl isn't present. Cc: Adrian Hunter <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Milian Wolff <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-04-14perf callchain: Start moving away from global per thread cursorsArnaldo Carvalho de Melo1-1/+1
The recent perf_evsel__fprintf_callchain() move to evsel.c added several new symbol requirements to the python binding, for instance: # perf test -v python 16: Try 'import perf' in python, checking link problems : --- start --- test child forked, pid 18030 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /tmp/build/perf/python/perf.so: undefined symbol: callchain_cursor test child finished with -1 ---- end ---- Try 'import perf' in python, checking link problems: FAILED! # This would require linking against callchain.c to access to the global callchain_cursor variables. Since lots of functions already receive as a parameter a callchain_cursor struct pointer, make that be the case for some more function so that we can start phasing out usage of yet another global variable. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-04-06perf script perl: Do error checking on new backtrace routineArnaldo Carvalho de Melo1-9/+21
This ended up triggering these warnings when building on Ubuntu 12.04.5: util/scripting-engines/trace-event-perl.c: In function 'perl_process_callchain': util/scripting-engines/trace-event-perl.c:293:4: error: value computed is not used [-Werror=unused-value] util/scripting-engines/trace-event-perl.c:294:4: error: value computed is not used [-Werror=unused-value] util/scripting-engines/trace-event-perl.c:295:4: error: value computed is not used [-Werror=unused-value] util/scripting-engines/trace-event-perl.c:297:4: error: value computed is not used [-Werror=unused-value] util/scripting-engines/trace-event-perl.c:309:4: error: value computed is not used [-Werror=unused-value] cc1: all warnings being treated as errors mv: cannot stat `/tmp/build/perf/util/scripting-engines/.trace-event-perl.o.tmp': No such file or directory make[4]: *** [/tmp/build/perf/util/scripting-engines/trace-event-perl.o] Error 1 Fix it by doing error checking when building the perl data structures related to callchains. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Dima Kogan <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Fixes: f7380c12ec6c ("perf script perl: Perl scripts now get a backtrace, like the python ones") Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-03-30perf script perl: Perl scripts now get a backtrace, like the python onesDima Kogan1-8/+106
We have some infrastructure to use perl or python to analyze logs generated by perf. Prior to this patch, only the python tools had access to backtrace information. This patch makes this information available to perl scripts as well. Example: Let's look at malloc() calls made by the seq utility. First we create a probe point: $ perf probe -x /lib/x86_64-linux-gnu/libc.so.6 malloc Added new events: ... Now we run seq, while monitoring malloc() calls with perf $ perf record --call-graph=dwarf -e probe_libc:malloc seq 5 1 2 3 4 5 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.064 MB perf.data (6 samples) ] We can use perf to look at its log to see the malloc calls and the backtrace $ perf script seq 14195 [000] 1927993.748254: probe_libc:malloc: (7f9ff8edd320) bytes=0x22 7f9ff8edd320 malloc (/lib/x86_64-linux-gnu/libc-2.22.so) 7f9ff8e8eab0 set_binding_values.part.0 (/lib/x86_64-linux-gnu/libc-2.22.so) 7f9ff8e8eda1 __bindtextdomain (/lib/x86_64-linux-gnu/libc-2.22.so) 401b22 main (/usr/bin/seq) 7f9ff8e82610 __libc_start_main (/lib/x86_64-linux-gnu/libc-2.22.so) 402799 _start (/usr/bin/seq) ... We can also use the scripting facilities. We create a skeleton perl script that simply prints out the events $ perf script -g perl generated Perl script: perf-script.pl We can then use this script to see the malloc() calls with a backtrace. Prior to this patch, the backtrace was not available to the perl scripts. $ perf script -s perf-script.pl probe_libc::malloc 0 1927993.748254260 14195 seq __probe_ip=140325052863264, bytes=34 [7f9ff8edd320] malloc [7f9ff8e8eab0] set_binding_values.part.0 [7f9ff8e8eda1] __bindtextdomain [401b22] main [7f9ff8e82610] __libc_start_main [402799] _start ... Tested-by: Arnaldo Carvalho de Melo <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Dima Kogan <[email protected]>
2016-02-25perf script: Exception handling when the print fmt is emptyTaeung Song1-0/+3
After collecting samples for events 'syscalls:', perf-script with python script doesn't occasionally work generating a segmentation fault. The reason is that the print fmt is empty and a value of event->print_fmt.args is NULL, so dereferencing the null pointer results in a segmentation fault i.e.: # perf record -e syscalls:* # perf script -g python # perf script -s perf-script.py in trace_begin syscalls__sys_enter_brk 3 79841.832099154 3777 test.sh syscall_nr=12, brk=0 ... (omitted) ... Segmentation fault (core dumped) For example, a format of sys_enter_getuid() hasn't print fmt as below. # cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_getuid/format name: sys_enter_getuid ID: 188 format: field:unsigned short common_type; offset:0; size:2; signed:0; field:unsigned char common_flags; offset:2; size:1; signed:0; field:unsigned char common_preempt_count; offset:3; size:1; signed:0; field:int common_pid; offset:4; size:4; signed:1; field:int syscall_nr; offset:8; size:4; signed:1; print fmt: "" So add exception handling to avoid this problem. Signed-off-by: Taeung Song <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-09-02tools lib traceevent: Support function __get_dynamic_array_lenHe Kuang1-0/+1
Support helper function __get_dynamic_array_len() in libtraceevent, this function is used accompany with __print_array() or __print_hex(), but currently it is not an available function in the function list of process_function(). The total allocated length of the dynamic array is embedded in the top half of __data_loc_##item field. This patch adds new arg type PRINT_DYNAMIC_ARRAY_LEN to return the length to eval_num_arg(), Signed-off-by: He Kuang <[email protected]> Acked-by: Namhyung Kim <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Wang Nan <[email protected]> Cc: Zefan Li <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Wang Nan <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-05-13tracing: Rename FTRACE_MAX_EVENT to TRACE_EVENT_TYPE_MAXSteven Rostedt (Red Hat)1-2/+2
The name "ftrace" really refers to the function hook infrastructure. It is not about the trace_events. Rename the max trace_event type size to something more descriptive and appropriate. Signed-off-by: Steven Rostedt <[email protected]>
2015-04-02perf scripting: No need to pass thread twice to the scripting callbacksArnaldo Carvalho de Melo1-3/+2
It is already in the addr_location, so remove the redundant 'thread' parameter from the callback signatures. Acked-by: Jiri Olsa <[email protected]> Acked-by: Namhyung Kim <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-03-24tools lib traceevent: Add support for __print_array()Javi Merino1-0/+5
Since 6ea22486ba46 ("tracing: Add array printing helper") trace can generate traces with variable element size arrays. Add support to parse them. Signed-off-by: Javi Merino <[email protected]> Acked-by: Namhyung Kim <[email protected]> Acked-by: Steven Rostedt <[email protected]> Cc: Jiri Olsa <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-11-06perf script perl: Removing event cache as it's no longer neededJiri Olsa1-23/+6
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: Jiri Olsa <[email protected]> Acked-by: Namhyung Kim <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-08-22perf scripting: Add 'flush' callback to scripting APIAdrian Hunter1-0/+6
In order to defer some output via the scripting API, there needs to be a callback after session processing but before the session is deleted. Signed-off-by: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-07-17perf tools: Move pr_* debug macros into debug objectJiri Olsa1-0/+1
Moving pr_* debug macros to have it with in same object as debug variables, becase we will change them to use verbose variable in next patch. Signed-off-by: Jiri Olsa <[email protected]> Cc: Corey Ashford <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Add missing debug.h include in python scripting glue and in the libdw unwind lib ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>