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2020-12-17perf record: Support new sample type for data page sizeKan Liang
Support new sample type PERF_SAMPLE_DATA_PAGE_SIZE for page size. Add new option --data-page-size to record sample data page size. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Stephane Eranian <eranian@google.com> Cc: Will Deacon <will@kernel.org> Link: http://lore.kernel.org/lkml/20201130172803.2676-3-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-11-30perf evlist: Use the right prefix for 'struct evlist' sample id lookup methodsArnaldo Carvalho de Melo
perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-11-27perf record: Synthesize cgroup events only if neededNamhyung Kim
It didn't check the tool->cgroup_events bit which is set when the --all-cgroups option is given. Without it, samples will not have cgroup info so no reason to synthesize. We can check the PERF_RECORD_CGROUP records after running perf record *WITHOUT* the --all-cgroups option: Before: $ perf report -D | grep CGROUP 0 0 0x8430 [0x38]: PERF_RECORD_CGROUP cgroup: 1 / CGROUP events: 1 CGROUP events: 0 CGROUP events: 0 After: $ perf report -D | grep CGROUP CGROUP events: 0 CGROUP events: 0 CGROUP events: 0 Committer testing: Before: # perf record -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 2.208 MB perf.data (10003 samples) ] # perf report -D | grep "CGROUP events" CGROUP events: 146 CGROUP events: 0 CGROUP events: 0 # After: # perf record -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 2.208 MB perf.data (10448 samples) ] # perf report -D | grep "CGROUP events" CGROUP events: 0 CGROUP events: 0 CGROUP events: 0 # With all-cgroups: # perf record --all-cgroups -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 2.374 MB perf.data (11526 samples) ] # perf report -D | grep "CGROUP events" CGROUP events: 146 CGROUP events: 0 CGROUP events: 0 # Fixes: 8fb4b67939e16 ("perf record: Add --all-cgroups option") Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201127054356.405481-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-10-14perf tools: Use build_id object in dsoJiri Olsa
Replace build_id byte array with struct build_id object and all the code that references it. The objective is to carry size together with build id array, so it's better to keep both together. This is preparatory change for following patches, and there's no functional change. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20201013192441.1299447-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-22perf tsc: Move out common functions from x86Leo Yan
Functions perf_read_tsc_conversion() and perf_event__synth_time_conv() should work as common functions rather than x86 specific, so move these two functions out from arch/x86 folder and place them into util/tsc.c. Since the function perf_event__synth_time_conv() will be linked in util/tsc.c, remove its weak version. Committer testing: Before/after: # perf test tsc 70: Convert perf time to TSC : Ok # # perf test -v tsc 70: Convert perf time to TSC : --- start --- test child forked, pid 8520 mmap size 528384B 1st event perf time 592110439891 tsc 2317172044331 rdtsc time 592110441915 tsc 2317172052010 2nd event perf time 592110442336 tsc 2317172053605 test child finished with 0 ---- end ---- Convert perf time to TSC: Ok # Signed-off-by: Leo Yan <leo.yan@linaro.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Kemeng Shi <shikemeng@huawei.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nick Gasson <nick.gasson@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Remi Bernon <rbernon@codeweavers.com> Cc: Stephane Eranian <eranian@google.com> Cc: Steve Maclean <steve.maclean@microsoft.com> Cc: Will Deacon <will@kernel.org> Cc: Zou Wei <zou_wei@huawei.com> Link: http://lore.kernel.org/lkml/20200914115311.2201-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-30perf tools: Remove unneeded semicolonsZou Wei
Fixes coccicheck warnings: tools/perf/builtin-diff.c:1565:2-3: Unneeded semicolon tools/perf/builtin-lock.c:778:2-3: Unneeded semicolon tools/perf/builtin-mem.c:126:2-3: Unneeded semicolon tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c:555:2-3: Unneeded semicolon tools/perf/util/ordered-events.c:317:2-3: Unneeded semicolon tools/perf/util/synthetic-events.c:1131:2-3: Unneeded semicolon tools/perf/util/trace-event-read.c:78:2-3: Unneeded semicolon Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/1588065523-71423-1-git-send-email-zou_wei@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-30perf synthetic events: Remove use of sscanf from /proc readingIan Rogers
The synthesize benchmark, run on a single process and thread, shows perf_event__synthesize_mmap_events as the hottest function with fgets and sscanf taking the majority of execution time. fscanf performs similarly well. Replace the scanf call with manual reading of each field of the /proc/pid/maps line, and remove some unnecessary buffering. This change also addresses potential, but unlikely, buffer overruns for the string values read by scanf. Performance before is: $ sudo perf bench internals synthesize -m 16 -M 16 -s -t \# Running 'internals/synthesize' benchmark: Computing performance of single threaded perf event synthesis by synthesizing events on the perf process itself: Average synthesis took: 102.810 usec (+- 0.027 usec) Average num. events: 17.000 (+- 0.000) Average time per event 6.048 usec Average data synthesis took: 106.325 usec (+- 0.018 usec) Average num. events: 89.000 (+- 0.000) Average time per event 1.195 usec Computing performance of multi threaded perf event synthesis by synthesizing events on CPU 0: Number of synthesis threads: 16 Average synthesis took: 68103.100 usec (+- 441.234 usec) Average num. events: 30703.000 (+- 0.730) Average time per event 2.218 usec And after is: $ sudo perf bench internals synthesize -m 16 -M 16 -s -t \# Running 'internals/synthesize' benchmark: Computing performance of single threaded perf event synthesis by synthesizing events on the perf process itself: Average synthesis took: 50.388 usec (+- 0.031 usec) Average num. events: 17.000 (+- 0.000) Average time per event 2.964 usec Average data synthesis took: 52.693 usec (+- 0.020 usec) Average num. events: 89.000 (+- 0.000) Average time per event 0.592 usec Computing performance of multi threaded perf event synthesis by synthesizing events on CPU 0: Number of synthesis threads: 16 Average synthesis took: 45022.400 usec (+- 552.740 usec) Average num. events: 30624.200 (+- 10.037) Average time per event 1.470 usec On a Intel Xeon 6154 compiling with Debian gcc 9.2.1. Committer testing: On a AMD Ryzen 5 3600X 6-Core Processor: Before: # perf bench internals synthesize --min-threads 12 --max-threads 12 --st --mt # Running 'internals/synthesize' benchmark: Computing performance of single threaded perf event synthesis by synthesizing events on the perf process itself: Average synthesis took: 267.491 usec (+- 0.176 usec) Average num. events: 56.000 (+- 0.000) Average time per event 4.777 usec Average data synthesis took: 277.257 usec (+- 0.169 usec) Average num. events: 287.000 (+- 0.000) Average time per event 0.966 usec Computing performance of multi threaded perf event synthesis by synthesizing events on CPU 0: Number of synthesis threads: 12 Average synthesis took: 81599.500 usec (+- 346.315 usec) Average num. events: 36096.100 (+- 2.523) Average time per event 2.261 usec # After: # perf bench internals synthesize --min-threads 12 --max-threads 12 --st --mt # Running 'internals/synthesize' benchmark: Computing performance of single threaded perf event synthesis by synthesizing events on the perf process itself: Average synthesis took: 110.125 usec (+- 0.080 usec) Average num. events: 56.000 (+- 0.000) Average time per event 1.967 usec Average data synthesis took: 118.518 usec (+- 0.057 usec) Average num. events: 287.000 (+- 0.000) Average time per event 0.413 usec Computing performance of multi threaded perf event synthesis by synthesizing events on CPU 0: Number of synthesis threads: 12 Average synthesis took: 43490.700 usec (+- 284.527 usec) Average num. events: 37028.500 (+- 0.563) Average time per event 1.175 usec # Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrey Zhizhikin <andrey.z@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lore.kernel.org/lkml/20200415054050.31645-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-16perf synthetic-events: save 4kb from 2 stack framesIan Rogers
Reuse an existing char buffer to avoid two PATH_MAX sized char buffers. Reduces stack frame sizes by 4kb. perf_event__synthesize_mmap_events before 'sub $0x45b8,%rsp' after 'sub $0x35b8,%rsp'. perf_event__get_comm_ids before 'sub $0x2028,%rsp' after 'sub $0x1028,%rsp'. The performance impact of this change is negligible. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrey Zhizhikin <andrey.z@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lore.kernel.org/lkml/20200402154357.107873-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf record: Support synthesizing cgroup eventsNamhyung Kim
Synthesize cgroup events by iterating cgroup filesystem directories. The cgroup event only saves the portion of cgroup path after the mount point and the cgroup id (which actually is a file handle). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-7-namhyung@kernel.org Link: http://lore.kernel.org/lkml/20200402015249.3800462-1-namhyung@kernel.org [ Extracted the HAVE_FILE_HANDLE from the followup patch, added missing __maybe_unused ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf tools: Basic support for CGROUP eventNamhyung Kim
Implement basic functionality to support cgroup tracking. Each cgroup can be identified by inode number which can be read from userspace too. The actual cgroup processing will come in the later patch. Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> [ fix perf test failure on sampling parsing ] Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-17perf tools: Give synthetic mmap events an inode generationIan Rogers
When mmap2 events are synthesized the ino_generation field isn't being set leading to uninitialized memory being compared. Caught with clang's -fsanitize=memory: ==124733==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x55a96a6a65cc in __dso_id__cmp tools/perf/util/dsos.c:23:6 #1 0x55a96a6a81d5 in dso_id__cmp tools/perf/util/dsos.c:38:9 #2 0x55a96a6a717f in __dso__cmp_long_name tools/perf/util/dsos.c:74:15 #3 0x55a96a6a6c4c in __dsos__findnew_link_by_longname_id tools/perf/util/dsos.c:106:12 #4 0x55a96a6a851e in __dsos__findnew_by_longname_id tools/perf/util/dsos.c:178:9 #5 0x55a96a6a7798 in __dsos__find_id tools/perf/util/dsos.c:191:9 #6 0x55a96a6a7b57 in __dsos__findnew_id tools/perf/util/dsos.c:251:20 #7 0x55a96a6a7a57 in dsos__findnew_id tools/perf/util/dsos.c:259:17 #8 0x55a96a7776ae in machine__findnew_dso_id tools/perf/util/machine.c:2709:9 #9 0x55a96a77dfcf in map__new tools/perf/util/map.c:193:10 #10 0x55a96a77240a in machine__process_mmap2_event tools/perf/util/machine.c:1670:8 #11 0x55a96a7741a3 in machine__process_event tools/perf/util/machine.c:1882:9 #12 0x55a96a6aee39 in perf_event__process tools/perf/util/event.c:454:9 #13 0x55a96a87d633 in perf_tool__process_synth_event tools/perf/util/synthetic-events.c:63:9 #14 0x55a96a87f131 in perf_event__synthesize_mmap_events tools/perf/util/synthetic-events.c:403:7 #15 0x55a96a8815d6 in __event__synthesize_thread tools/perf/util/synthetic-events.c:548:9 #16 0x55a96a882bff in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:681:3 #17 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9 #18 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9 #19 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8 #20 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2 #21 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9 #22 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9 #23 0x55a96a52966e in __cmd_test tools/perf/tests/builtin-test.c:603:4 #24 0x55a96a52855d in cmd_test tools/perf/tests/builtin-test.c:747:9 #25 0x55a96a2844d4 in run_builtin tools/perf/perf.c:312:11 #26 0x55a96a282bd0 in handle_internal_command tools/perf/perf.c:364:8 #27 0x55a96a284097 in run_argv tools/perf/perf.c:408:2 #28 0x55a96a282223 in main tools/perf/perf.c:538:3 Uninitialized value was stored to memory at #1 0x55a96a6a18f7 in dso__new_id tools/perf/util/dso.c:1230:14 #2 0x55a96a6a78ee in __dsos__addnew_id tools/perf/util/dsos.c:233:20 #3 0x55a96a6a7bcc in __dsos__findnew_id tools/perf/util/dsos.c:252:21 #4 0x55a96a6a7a57 in dsos__findnew_id tools/perf/util/dsos.c:259:17 #5 0x55a96a7776ae in machine__findnew_dso_id tools/perf/util/machine.c:2709:9 #6 0x55a96a77dfcf in map__new tools/perf/util/map.c:193:10 #7 0x55a96a77240a in machine__process_mmap2_event tools/perf/util/machine.c:1670:8 #8 0x55a96a7741a3 in machine__process_event tools/perf/util/machine.c:1882:9 #9 0x55a96a6aee39 in perf_event__process tools/perf/util/event.c:454:9 #10 0x55a96a87d633 in perf_tool__process_synth_event tools/perf/util/synthetic-events.c:63:9 #11 0x55a96a87f131 in perf_event__synthesize_mmap_events tools/perf/util/synthetic-events.c:403:7 #12 0x55a96a8815d6 in __event__synthesize_thread tools/perf/util/synthetic-events.c:548:9 #13 0x55a96a882bff in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:681:3 #14 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9 #15 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9 #16 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8 #17 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2 #18 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9 #19 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9 Uninitialized value was stored to memory at #0 0x55a96a7725af in machine__process_mmap2_event tools/perf/util/machine.c:1646:25 #1 0x55a96a7741a3 in machine__process_event tools/perf/util/machine.c:1882:9 #2 0x55a96a6aee39 in perf_event__process tools/perf/util/event.c:454:9 #3 0x55a96a87d633 in perf_tool__process_synth_event tools/perf/util/synthetic-events.c:63:9 #4 0x55a96a87f131 in perf_event__synthesize_mmap_events tools/perf/util/synthetic-events.c:403:7 #5 0x55a96a8815d6 in __event__synthesize_thread tools/perf/util/synthetic-events.c:548:9 #6 0x55a96a882bff in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:681:3 #7 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9 #8 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9 #9 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8 #10 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2 #11 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9 #12 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9 #13 0x55a96a52966e in __cmd_test tools/perf/tests/builtin-test.c:603:4 #14 0x55a96a52855d in cmd_test tools/perf/tests/builtin-test.c:747:9 #15 0x55a96a2844d4 in run_builtin tools/perf/perf.c:312:11 #16 0x55a96a282bd0 in handle_internal_command tools/perf/perf.c:364:8 #17 0x55a96a284097 in run_argv tools/perf/perf.c:408:2 #18 0x55a96a282223 in main tools/perf/perf.c:538:3 Uninitialized value was created by a heap allocation #0 0x55a96a22f60d in malloc llvm/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:925:3 #1 0x55a96a882948 in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:655:15 #2 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9 #3 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9 #4 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8 #5 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2 #6 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9 #7 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9 #8 0x55a96a52966e in __cmd_test tools/perf/tests/builtin-test.c:603:4 #9 0x55a96a52855d in cmd_test tools/perf/tests/builtin-test.c:747:9 #10 0x55a96a2844d4 in run_builtin tools/perf/perf.c:312:11 #11 0x55a96a282bd0 in handle_internal_command tools/perf/perf.c:364:8 #12 0x55a96a284097 in run_argv tools/perf/perf.c:408:2 #13 0x55a96a282223 in main tools/perf/perf.c:538:3 SUMMARY: MemorySanitizer: use-of-uninitialized-value tools/perf/util/dsos.c:23:6 in __dso_id__cmp Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20200313053129.131264-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-09perf tools: Add hw_idx in struct branch_stackKan Liang
The low level index of raw branch records for the most recent branch can be recorded in a sample with PERF_SAMPLE_BRANCH_HW_INDEX branch_sample_type. Extend struct branch_stack to support it. However, if the PERF_SAMPLE_BRANCH_HW_INDEX is not applied, only nr and entries[] will be output by kernel. The pointer of entries[] could be wrong, since the output format is different with new struct branch_stack. Add a variable no_hw_idx in struct perf_sample to indicate whether the hw_idx is output. Add get_branch_entry() to return corresponding pointer of entries[0]. To make dummy branch sample consistent as new branch sample, add hw_idx in struct dummy_branch_stack for cs-etm and intel-pt. Apply the new struct branch_stack for synthetic events as well. Extend test case sample-parsing to support new struct branch_stack. Committer notes: Renamed get_branch_entries() to perf_sample__branch_entries() to have proper namespacing and pave the way for this to be moved to libperf, eventually. Add 'static' to that inline as it is in a header. Add 'hw_idx' to 'struct dummy_branch_stack' in cs-etm.c to fix the build on arm64. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pavel Gerasimov <pavel.gerasimov@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Stephane Eranian <eranian@google.com> Cc: Vitaly Slobodskoy <vitaly.slobodskoy@intel.com> Link: http://lore.kernel.org/lkml/20200228163011.19358-2-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26perf maps: Merge 'struct maps' with 'struct map_groups'Arnaldo Carvalho de Melo
And pick the shortest name: 'struct maps'. The split existed because we used to have two groups of maps, one for functions and one for variables, but that only complicated things, sometimes we needed to figure out what was at some address and then had to first try it on the functions group and if that failed, fall back to the variables one. That split is long gone, so for quite a while we had only one struct maps per struct map_groups, simplify things by combining those structs. First patch is the minimum needed to merge both, follow up patches will rename 'thread->mg' to 'thread->maps', etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-hom6639ro7020o708trhxh59@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-21perf tools: Add kernel AUX area sampling definitionsAdrian Hunter
Add kernel AUX area sampling definitions, which brings perf_event.h into line with the kernel version. New sample type PERF_SAMPLE_AUX requests a sample of the AUX area buffer. New perf_event_attr member 'aux_sample_size' specifies the desired size of the sample. Also add support for parsing samples containing AUX area data i.e. PERF_SAMPLE_AUX. Committer notes: I squashed the first two patches in this series to avoid breaking automatic bisection, i.e. after applying only the original first patch in this series we would have: # perf test -v parsing 26: Sample parsing : --- start --- test child forked, pid 17018 sample format has changed, some new PERF_SAMPLE_ bit was introduced - test needs updating test child finished with -1 ---- end ---- Sample parsing: FAILED! # With the two paches combined: # perf test parsing 26: Sample parsing : Ok # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-06perf maps: Add for_each_entry()/_safe() iteratorsArnaldo Carvalho de Melo
To reduce boilerplate, provide a more compact form using an idiom present in other trees of data structures. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-59gmq4kg1r68ou1wknyjl78x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-25libperf: Move 'page_size' global variable to libperfJiri Olsa
We need the 'page_size' variable in libperf, so move it there. Add a libperf_init() as a global libperf init function to obtain this value via sysconf() at tool start. Committer notes: Add internal/lib.h to tools/perf/ files using 'page_size', sometimes replacing util.h with it if that was the only reason for having util.h included. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-25libperf: Move 'ids' from 'struct evsel' to 'struct perf_evsel'Jiri Olsa
Move 'ids' from 'struct evsel' to libperf's 'struct perf_evsel'. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-26-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-25libperf: Move 'id' from 'struct evsel' to 'struct perf_evsel'Jiri Olsa
Move the 'id' array from 'struct evsel' to libperf's 'struct perf_evsel'. Committer note: Fix the tools/perf/util/cs-etm.c build, i.e. aarch64's CoreSight. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-25-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-20perf tools: Move event synthesizing routines to separate .c fileArnaldo Carvalho de Melo
For better grouping, in time we may end up making most of these static, i.e. generalizing the 'perf record' synthesizing code so that based on the target it can do the right thing and call the needed synthesizers. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-s9zxxhk40s95pjng9panet16@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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