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Updates were released in:
https://github.com/intel/perfmon/commit/9a3cd5ad68aee46078c663fe0cd9484e3956fd88
Adds the events ICACHE_DATA.STALLS, ICACHE_TAG.STALLS and
DECODE.LCP. Descriptions are also updated.
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Updates were released in:
https://github.com/intel/perfmon/commit/cdaa69afe7a48a217b1d89320a27efc6e650cec3
Adds the events IDQ.DSB_CYCLES_OK, IDQ.DSB_CYCLES_ANY,
ICACHE_TAG.STALLS, DECODE.LCP, LSD.CYCLES_OK. Descriptions are also
updated.
Signed-off-by: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Updates were released in:
https://github.com/intel/perfmon/commit/1c3042c13bbfea05abe1ebb6910ae58b2172e9ef
Adds the events IDQ.DSB_CYCLES_OK, IDQ.DSB_CYCLES_ANY,
ICACHE_TAG.STALLS, DECODE.LCP, LSD.CYCLES_OK. Descriptions are also
updated.
Signed-off-by: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Updates were released in:
https://github.com/intel/perfmon/commit/a84850f1fec633002c35838ed34e51e1f0d6a2dd
Adds a large number of CXL events like
UNC_CHA_TOR_OCCUPANCY.IA_MISS_RFO_CXL_ACC,
UNC_CHA_TOR_OCCUPANCY.IA_MISS_DRD_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_MISS_DRD_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_MISS_RFO_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_MISS_LLCPREFRFO_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_MISS_RFO_PREF_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_MISS_DRD_PREF_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_MISS_LLCPREFDATA_CXL_ACC,
UNC_CHA_TOR_OCCUPANCY.IA_MISS_DRD_PREF_CXL_ACC,
UNC_CHA_TOR_OCCUPANCY.IA_MISS_LLCPREFDATA_CXL_ACC,
UNC_CHA_TOR_OCCUPANCY.IA_MISS_LLCPREFRFO_CXL_ACC,
UNC_CHA_TOR_OCCUPANCY.IA_MISS_RFO_PREF_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_MISS_CXL_ACC,
UNC_CHA_TOR_INSERTS.IA_HIT_CXL_ACC,
UNC_CHA_TOR_OCCUPANCY.IA_MISS_CXL_ACC,
UNC_CHA_TOR_OCCUPANCY.IA_HIT_CXL_ACC.
Signed-off-by: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Updates were released in:
https://github.com/intel/perfmon/commit/78d47cbbae48a0297a507ae4fea234ff37ff9960
Adds the events ICACHE_DATA.STALLS, ICACHE_TAG.STALLS and
DECODE.LCP. Descriptions are also updated.
Signed-off-by: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Updates were released in:
https://github.com/intel/perfmon/commit/f3d841189f8964bc240c86301f4c849845630b5b
A number of events are deprecated and event descriptions updated. Adds
events ICACHE_DATA.STALLS, ICACHE_TAG.STALLS and DECODE.LCP.
Signed-off-by: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Updates were released in:
https://github.com/intel/perfmon/commit/e4f83534f23a69e6da55c672c4d929919688c9b6
Adds the events IDQ.DSB_CYCLES_OK, IDQ.DSB_CYCLES_ANY,
ICACHE_TAG.STALLS, DECODE.LCP, LSD.CYCLES_OK. Descriptions are also
updated.
Signed-off-by: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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1.03 events were released in:
https://github.com/intel/perfmon/commit/501a29e88b57e8b01d610168d0101d6181b15e28
It added a lot of events and all uncore events.
Signed-off-by: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Add RocketLake events added to Intel perfmon in:
https://github.com/intel/perfmon/commit/f5f47dc938d81d5cc491cf8ac1f90bee18e238cf
mapfile.csv is updated accordingly with the CPUID matching one
previously associated with icelake.
Signed-off-by: Ian Rogers <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
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Make the transaction metrics conditional on the cycles-tx event being
present. This event may not be present when TSX extensions have been
disabled.
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Support for the new has_event function in metrics.
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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Some events are dependent on firmware/kernel enablement. Allow such
events to be detected when the metric is parsed so that the metric's
event parsing doesn't fail.
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Eduard Zingerman <[email protected]>
Cc: Sohom Datta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Cc: John Garry <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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The thread__find_map() is to find a map for a given address in the
given thread's address space. It searches maps based on the cpu mode
and fills various information in the addr_location data structure.
It might change al->maps and al->map, but not al->thread. Then I
think no reason to not set the al->thread at the beginning.
Also get rid of the duplicate 'al->map = NULL' part.
Fixes: 0dd5041c9a0ea ("perf addr_location: Add init/exit/copy functions")
Acked-by: Ian Rogers <[email protected]>
Acked-by: James Clark <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Suzuki K Poulose <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: John Garry <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
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If loading a core PMU fails, legacy hardware/cache events may segv due
to there being no PMU. Create a placeholder empty PMU for this
case. This was discussed in:
https://lore.kernel.org/lkml/[email protected]/
Reported-by: Yang Jihong <[email protected]>
Tested-by: Yang Jihong <[email protected]>
Signed-off-by: Ian Rogers <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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The dso__find_symbol_by_name() should be have idx pointer argument.
Found during the build-test.
$ make build-test
...
CC /tmp/tmp.6JwPK1xbWG/tests/pe-file-parsing.o
tests/pe-file-parsing.c: In function ‘run_dir’:
tests/pe-file-parsing.c:64:15: error: too few arguments to function ‘dso__find_symbol_by_name’
64 | sym = dso__find_symbol_by_name(dso, "main");
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from tests/pe-file-parsing.c:16:
/usr/local/google/home/namhyung/project/linux/tools/perf/util/symbol.h:135:16: note: declared here
135 | struct symbol *dso__find_symbol_by_name(struct dso *dso, const char *name, size_t *idx);
| ^~~~~~~~~~~~~~~~~~~~~~~~
Fixes: 259dce914e93 ("perf symbol: Remove symbol_name_rb_node")
Acked-by: Ian Rogers <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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-target has been deprecated since Clang 3.4 in 2013. Use the preferred
--target=bpf form instead. This matches how we use --target= in
scripts/Makefile.clang.
Signed-off-by: Fangrui Song <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: [email protected]
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Link: https://github.com/llvm/llvm-project/commit/274b6f0c87a6a1798de0a68135afc7f95def6277
Link: https://lore.kernel.org/r/[email protected]
[ resolved a conflict with GEN_VMLINUX_H changes ]
Signed-off-by: Namhyung Kim <[email protected]>
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The original logic was to check is_pmu_hybrid() like in the below.
It just checks the name of PMU specifically for Intel hybrid systems
which means uncore PMU events should return false.
https://lore.kernel.org/all/[email protected]/
The is_pmu_hybrid() was replaced by arch-agnostic way but with the
incorrect condition which was fixed for core PMUs but not uncore.
This change fixes both.
Fixes: e23421426e13 ("perf pmu: Correct perf_pmu__auto_merge_stats() affecting hybrid")
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/all/CAP-5=fXOi=xQ4=j5xAq+jWLR9n7uvfsWK+PzXkY1MZ3Fz-xccw@mail.gmail.com/
Link: https://lore.kernel.org/r/[email protected]
[ rephrase the commit log a bit ]
Signed-off-by: Namhyung Kim <[email protected]>
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Namhyung reported segfault in perf daemon start command.
It's caused by extra check on argv[0] which is set to NULL by previous
__cmd_start call. Adding missing else to skip the extra check.
Fixes: 92294b906e6c ("perf daemon: Dynamically allocate path to perf")
Reported-and-Tested-by: Namhyung Kim <[email protected]>
Reported-by: Thomas Richter <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
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perf_event_attr__fprintf()
When printing perf_event_attr, always display perf_event_attr config and
its symbol to improve the readability of debugging information.
Before:
# perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
<SNIP>
------------------------------------------------------------
perf_event_attr:
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5
------------------------------------------------------------
perf_event_attr:
type 1
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6
------------------------------------------------------------
perf_event_attr:
type 2
size 136
config 0x143
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7
------------------------------------------------------------
perf_event_attr:
type 3
size 136
config 0x10005
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9
------------------------------------------------------------
perf_event_attr:
type 4
size 136
config 0x101
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10
------------------------------------------------------------
perf_event_attr:
type 5
size 136
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
bp_type 3
{ bp_len, config2 } 0x4
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 11
<SNIP>
After:
# perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
<SNIP>
------------------------------------------------------------
perf_event_attr:
type 0 (PERF_TYPE_HARDWARE)
size 136
config 0 (PERF_COUNT_HW_CPU_CYCLES)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5
------------------------------------------------------------
perf_event_attr:
type 1 (PERF_TYPE_SOFTWARE)
size 136
config 0 (PERF_COUNT_SW_CPU_CLOCK)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6
------------------------------------------------------------
perf_event_attr:
type 2 (PERF_TYPE_TRACEPOINT)
size 136
config 0x143 (sched:sched_switch)
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7
------------------------------------------------------------
perf_event_attr:
type 3 (PERF_TYPE_HW_CACHE)
size 136
config 0x10005 (PERF_COUNT_HW_CACHE_RESULT_MISS | PERF_COUNT_HW_CACHE_OP_READ | PERF_COUNT_HW_CACHE_BPU)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9
------------------------------------------------------------
perf_event_attr:
type 4 (PERF_TYPE_RAW)
size 136
config 0x101
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10
------------------------------------------------------------
perf_event_attr:
type 5 (PERF_TYPE_BREAKPOINT)
size 136
config 0
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
bp_type 3
{ bp_len, config2 } 0x4
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 11
------------------------------------------------------------
perf_event_attr:
type 1 (PERF_TYPE_SOFTWARE)
size 136
config 0x9 (PERF_COUNT_SW_DUMMY)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
inherit 1
mmap 1
comm 1
freq 1
task 1
sample_id_all 1
mmap2 1
comm_exec 1
ksymbol 1
bpf_event 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 12
<SNIP>
Signed-off-by: Yang Jihong <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
[ fix perf import test by adding a dummy tracepoint_id__to_name() ]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
perf_event_attr__fprintf()
When printing perf_event_attr, always display perf_event_attr type and
its symbol to improve the readability of debugging information.
Before:
# perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
<SNIP>
------------------------------------------------------------
perf_event_attr:
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5
------------------------------------------------------------
perf_event_attr:
type 1
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6
------------------------------------------------------------
perf_event_attr:
type 2
size 136
config 0x143
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7
------------------------------------------------------------
perf_event_attr:
type 3
size 136
config 0x10005
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9
------------------------------------------------------------
perf_event_attr:
type 4
size 136
config 0x101
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10
------------------------------------------------------------
perf_event_attr:
type 5
size 136
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
bp_type 3
{ bp_len, config2 } 0x4
------------------------------------------------------------
<SNIP>
After:
# perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
<SNIP>
------------------------------------------------------------
perf_event_attr:
type 0 (PERF_TYPE_HARDWARE)
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5
------------------------------------------------------------
perf_event_attr:
type 1 (PERF_TYPE_SOFTWARE)
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6
------------------------------------------------------------
perf_event_attr:
type 2 (PERF_TYPE_TRACEPOINT)
size 136
config 0x143
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7
------------------------------------------------------------
perf_event_attr:
type 3 (PERF_TYPE_HW_CACHE)
size 136
config 0x10005
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9
------------------------------------------------------------
perf_event_attr:
type 4 (PERF_TYPE_RAW)
size 136
config 0x101
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10
------------------------------------------------------------
perf_event_attr:
type 5 (PERF_TYPE_BREAKPOINT)
size 136
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
bp_type 3
{ bp_len, config2 } 0x4
------------------------------------------------------------
<SNIP>
Signed-off-by: Yang Jihong <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
When printing attr, members whose value is 0 will not be printed, we want
to print the case where attr->type is 0(PERF_TYPE_HARDWARE), add `_a`
param to PRINT_ATTRf macro to always print member when it is true
No functional change.
Signed-off-by: Yang Jihong <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Add tracepoint_id_to_name() helper to search for the trace events directory
by given event id and return the corresponding tracepoint.
Signed-off-by: Yang Jihong <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Previously used to specify symbol_name_rb_node was in use.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Carsten Haitzler <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Changbin Du <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Christophe JAILLET <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Most perf commands want to sort symbols by name and this is done via
an invasive rbtree that on 64-bit systems costs 24 bytes. Sorting the
symbols in a DSO by name is optional and not done by default, however,
if sorting is requested the 24 bytes is allocated for every
symbol.
This change removes the rbtree and uses a sorted array of symbol
pointers instead (costing 8 bytes per symbol). As the array is created
on demand then there are further memory savings. The complexity of
sorting the array and using the rbtree are the same.
To support going to the next symbol, the index of the current symbol
needs to be passed around as a pair with the current symbol. This
requires some API changes.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Carsten Haitzler <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Changbin Du <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Christophe JAILLET <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ minimize change in symbols__sort_by_name() ]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Determine if symbols are sorted, set the sorted flag and sort under
the dso lock. Done in the interest of thread safety.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Carsten Haitzler <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Changbin Du <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Christophe JAILLET <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ handle the similar code in util/probe-event.c ]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
If generating vmlinux.h, make the code to generate it more tolerant by
filtering out paths to kernels that lack a .BTF section.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Tiezhu Yang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Add tests with and without generating vmlinux.h.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Tiezhu Yang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
struct rq is defined in vmlinux.h when the vmlinux.h is generated,
this causes a redefinition failure if it is declared in
lock_contention.bpf.c. Move the definition to vmlinux.h for
consistency with the generated version.
Fixes: 760ebc45746b ("perf lock contention: Add empty 'struct rq' to satisfy libbpf 'runqueue' type verification")
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Tiezhu Yang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Commit a887466562b4 ("perf bpf skels: Stop using vmlinux.h generated
from BTF, use subset of used structs + CO-RE") made it so that
vmlinux.h was uncondtionally included from
tools/perf/util/vmlinux.h. This change reverts part of that change (so
that vmlinux.h is once again generated) and makes it so that the
vmlinux.h used at build time is selected from the VMLINUX_H
variable. By default the VMLINUX_H variable is set to the vmlinux.h
added in change a887466562b4, but if GEN_VMLINUX_H=1 is passed on the
build command line then the previous generation behavior kicks in.
The build with GEN_VMLINUX_H=1 currently fails with:
util/bpf_skel/lock_contention.bpf.c:419:8: error: redefinition of 'rq'
struct rq {};
^
/tmp/perf/util/bpf_skel/.tmp/../vmlinux.h:45630:8: note: previous definition is here
struct rq {
^
1 error generated.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Tiezhu Yang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
[ Format the error message and add a comment for GEN_VMLINUX_H ]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
This test checks if the output of perf stat to match event names and
metrics. So it wants the output lines to have both event name and
metric. Otherwise it should skip the line.
On AMD machines, the instruction event has two metrics and they are printed
in separate lines. It makes the line without event name like below:
# perf stat -a sleep 1
Performance counter stats for 'system wide':
64,383.34 msec cpu-clock # 64.048 CPUs utilized
14,526 context-switches # 225.617 /sec
112 cpu-migrations # 1.740 /sec
190 page-faults # 2.951 /sec
807,558,652 cycles # 0.013 GHz (83.30%)
69,809,799 stalled-cycles-frontend # 8.64% frontend cycles idle (83.30%)
196,983,266 stalled-cycles-backend # 24.39% backend cycles idle (83.30%)
424,876,008 instructions # 0.53 insn per cycle
(here) ---> # 0.46 stalled cycles per insn (83.30%)
97,788,321 branches # 1.519 M/sec (83.34%)
4,147,377 branch-misses # 4.24% of all branches (83.46%)
1.005241409 seconds time elapsed
Also modern Intel machines have TopDown metrics which also don't have
event names.
# perf stat -a sleep 1
Performance counter stats for 'system wide':
8,015.39 msec cpu-clock # 7.996 CPUs utilized
5,823 context-switches # 726.477 /sec
189 cpu-migrations # 23.580 /sec
139 page-faults # 17.342 /sec
435,139,308 cycles # 0.054 GHz
193,891,345 instructions # 0.45 insn per cycle
42,773,028 branches # 5.336 M/sec
2,298,113 branch-misses # 5.37% of all branches
TopdownL1 # 25.5 % tma_backend_bound
/--> # 7.9 % tma_bad_speculation
(here) --+ # 55.7 % tma_frontend_bound
\--> # 10.9 % tma_retiring
1.002395924 seconds time elapsed
There is a check to skip TopdownL1 and TopdownL2 specifically but it
does not cover every affected lines.
So there is another check to skip the line if it has nothing on the left
side of # sign. Well.. it seems ok but that's not enough too.
When aggregation mode (like --per-socket or --per-thread) is used, it
adds some prefix (e.g. CPU socket, task name and PID) in the output
line. So the test code ignores them to normalize result.
A problem can happen for per-thread mode when task name contains one or
more spaces. It'd only ignore the first part of the task name, and it
thinks there's something more in the line so it would not skip.
# perf stat -a --perf-thread sleep 1
...
perf-21276 # 70.2 % tma_backend_bound
perf-21276 # 3.9 % tma_bad_speculation
perf-21276 # 10.5 % tma_frontend_bound
perf-21276 # 15.3 % tma_retiring
^^^^^^^^^^
(ignored)
my task-21328 # 70.2 % tma_backend_bound
my task-21328 # 3.9 % tma_bad_speculation
my task-21328 # 10.5 % tma_frontend_bound
my task-21328 # 15.3 % tma_retiring
^^
(ignored)
So I think it should look at the metric names instead. Add skip_metric
to hold the list of names to skip. It would contain 'stalled cycles per
insn' and metrics started by 'tma_'.
Fixes: 99a04a48f225 ("perf test: Add test case for the standard 'perf stat' output")
Acked-by: Ian Rogers <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
On AMD machines, the perf stat STD output test failed like below:
$ sudo ./perf test -v 98
98: perf stat STD output linter :
--- start ---
test child forked, pid 1841901
Checking STD output: no argswrong event metric.
expected 'GHz' in 108,121 stalled-cycles-frontend # 10.88% frontend cycles idle
test child finished with -1
---- end ----
perf stat STD output linter: FAILED!
This is because there are stalled-cycles-{frontend,backend} events are
used by default. The current logic checks the event_name array to find
which event it's running. But 'cycles' event comes before those stalled
cycles event and it matches first. So it tries to find 'GHz' metric
in the output (which is for the 'cycles') and fails.
Move the stalled-cycles-{frontend,backend} events before 'cycles' so
that it can find the stalled cycles events first.
Also add a space after 'no args' test name for consistency.
Fixes: 99a04a48f225 ("perf test: Add test case for the standard 'perf stat' output")
Acked-by: Ian Rogers <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
The property of "cpu" when it has no cpu map is true on S390 with the
PMU cpum_cf. Rather than maintain a list of such PMUs, reuse the
is_core test result from the caller.
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Thomas Richter <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
JSON events created in pmu-events.c by jevents.py may not specify a
PMU they are associated with, in which case it is implied that it is
the first core PMU. Care is needed to select this for regular 'cpu',
s390 'cpum_cf' and ARMs many names as at the point the name is first
needed the core PMUs list hasn't been initialized. Add a helper in
perf_pmus to create this value, in the worst case by scanning sysfs.
v2. Add missing close if fdopendir fails.
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Thomas Richter <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: James Clark <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Thomas Richter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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The result of thread__find_map is the map in the passed in
addr_location. Calling addr_location__exit puts that map and so copies
need to do a map__get. Add in the corresponding map__puts.
v2. Add missing map__put when dso is missing.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ivan Babrou <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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The task-analyzer.py script (actually every other scripts too) requires
PERF_EXEC_PATH env to find dependent libraries and scripts. For scripts
test to run correctly, it needs to set PERF_EXEC_PATH to the perf tool
source directory.
Instead of blindly update the env, let's check the directory structure
to make sure it points to the correct location.
Fixes: e8478b84d6ba ("perf test: add new task-analyzer tests")
Cc: Petar Gligoric <[email protected]>
Cc: Hagen Paul Pfeifer <[email protected]>
Cc: Aditya Gupta <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Ingo Molnar <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
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The buffer is used to save register mapping in a sample. Normally
perf samples don't have any register so the string should be empty.
But it missed to initialize the buffer when the size is 0. And it's
passed to PyUnicode_FromString() with a garbage data.
So it returns NULL due to invalid input (instead of an empty unicode
string object) which causes a segfault like below:
Thread 2.1 "perf" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff7c83780 (LWP 193775)]
0x00007ffff6dbca2e in PyDict_SetItem () from /lib/x86_64-linux-gnu/libpython3.11.so.1.0
(gdb) bt
#0 0x00007ffff6dbca2e in PyDict_SetItem () from /lib/x86_64-linux-gnu/libpython3.11.so.1.0
#1 0x00007ffff6dbf848 in PyDict_SetItemString () from /lib/x86_64-linux-gnu/libpython3.11.so.1.0
#2 0x000055555575824d in pydict_set_item_string_decref (val=0x0, key=0x5555557f96e3 "iregs", dict=0x7ffff5f7f780)
at util/scripting-engines/trace-event-python.c:145
#3 set_regs_in_dict (evsel=0x555555efc370, sample=0x7fffffffb870, dict=0x7ffff5f7f780)
at util/scripting-engines/trace-event-python.c:776
#4 get_perf_sample_dict (sample=sample@entry=0x7fffffffb870, evsel=evsel@entry=0x555555efc370, al=al@entry=0x7fffffffb2e0,
addr_al=addr_al@entry=0x0, callchain=callchain@entry=0x7ffff63ef440) at util/scripting-engines/trace-event-python.c:923
#5 0x0000555555758ec1 in python_process_tracepoint (sample=0x7fffffffb870, evsel=0x555555efc370, al=0x7fffffffb2e0, addr_al=0x0)
at util/scripting-engines/trace-event-python.c:1044
#6 0x00005555555c5db8 in process_sample_event (tool=<optimized out>, event=<optimized out>, sample=<optimized out>,
evsel=0x555555efc370, machine=0x555555ef4d68) at builtin-script.c:2421
#7 0x00005555556b7793 in perf_session__deliver_event (session=0x555555ef4b60, event=0x7ffff62ff7d0, tool=0x7fffffffc150,
file_offset=30672, file_path=0x555555efb8a0 "perf.data") at util/session.c:1639
#8 0x00005555556bc864 in do_flush (show_progress=true, oe=0x555555efb700) at util/ordered-events.c:245
#9 __ordered_events__flush (oe=oe@entry=0x555555efb700, how=how@entry=OE_FLUSH__FINAL, timestamp=timestamp@entry=0)
at util/ordered-events.c:324
#10 0x00005555556bd06e in ordered_events__flush (oe=oe@entry=0x555555efb700, how=how@entry=OE_FLUSH__FINAL)
at util/ordered-events.c:342
#11 0x00005555556b9d63 in __perf_session__process_events (session=0x555555ef4b60) at util/session.c:2465
#12 perf_session__process_events (session=0x555555ef4b60) at util/session.c:2627
#13 0x00005555555cb1d0 in __cmd_script (script=0x7fffffffc150) at builtin-script.c:2839
#14 cmd_script (argc=<optimized out>, argv=<optimized out>) at builtin-script.c:4365
#15 0x0000555555650811 in run_builtin (p=p@entry=0x555555ed8948 <commands+456>, argc=argc@entry=4, argv=argv@entry=0x7fffffffe240)
at perf.c:323
#16 0x0000555555597eb3 in handle_internal_command (argv=0x7fffffffe240, argc=4) at perf.c:377
#17 run_argv (argv=<synthetic pointer>, argcp=<synthetic pointer>) at perf.c:421
#18 main (argc=4, argv=0x7fffffffe240) at perf.c:537
Fixes: 51cfe7a3e87e ("perf python: Avoid 2 leak sanitizer issues")
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Ingo Molnar <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
|
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$TEST_PROGRAM is a command with spaces so it's supposed to be word
split. The referenced fix to fix the shellcheck warnings incorrectly
quoted this string so unquote it to fix the test.
At the same time silence the shellcheck warning for that line and fix
two more shellcheck errors at the end of the script.
Fixes: 1bb17b4c6c91 ("perf tests arm_callgraph_fp: Address shellcheck warnings about signal names and adding double quotes for expression")
Signed-off-by: James Clark <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: [email protected]
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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We can see the following definitions in bfd/elfnn-loongarch.c:
#define PLT_HEADER_INSNS 8
#define PLT_HEADER_SIZE (PLT_HEADER_INSNS * 4)
#define PLT_ENTRY_INSNS 4
#define PLT_ENTRY_SIZE (PLT_ENTRY_INSNS * 4)
so plt header size is 32 and plt entry size is 16 on LoongArch,
let us add LoongArch case in get_plt_sizes().
Signed-off-by: Tiezhu Yang <[email protected]>
Acked-by: Huacai Chen <[email protected]>
Reviewed-by: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Ingo Molnar <[email protected]>
Link: https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=bfd/elfnn-loongarch.c
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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The commit fc51fc87b1b8 factored out the helper functions to a library
but the new file had execute permission. Due to the way it detects
the shell test scripts, it showed up in the perf test list unexpectedly.
$ ./perf test list 2>&1 | grep 86
76: x86 bp modify
77: x86 Sample parsing
78: x86 hybrid
86: <---- (here)
$ ./perf test -v 86
86: :
--- start ---
test child forked, pid 1932207
test child finished with 0
---- end ----
: Ok
As it's a collection of library functions, it should not run as is.
Let's remove the execute permission.
Fixes: fc51fc87b1b8 ("perf test: Move all the check functions of stat CSV output to lib")
Acked-by: Ian Rogers <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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Rerun failed metrics with longer workload to avoid false failure because
sometimes metric value test fails when running in very short amount of
time. Skip rerun if equal to or more than 20 metrics fail.
Signed-off-by: Weilin Wang <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: [email protected]
Cc: Ian Rogers <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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Add skip list for metrics known would fail because some of the metrics are
very likely to fail due to multiplexing or other errors. So add all of the
flaky tests into the skip list.
Signed-off-by: Weilin Wang <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: [email protected]
Cc: Ian Rogers <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Add metric value validation test to check if metric values are with in
correct value ranges. There are three types of tests included: 1)
positive-value test checks if all the metrics collected are non-negative;
2) single-value test checks if the list of metrics have values in given
value ranges; 3) relationship test checks if multiple metrics follow a
given relationship, e.g. memory_bandwidth_read + memory_bandwidth_write =
memory_bandwidth_total.
Signed-off-by: Weilin Wang <[email protected]>
Tested-by: Namhyung Kim <[email protected]>
Cc: [email protected]
Cc: Ian Rogers <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
Fixes an issue where an incorrect filename was added in the DWARF line table of
an ELF object file when calling 'perf inject --jit' due to not checking the
filename of a debug entry against the repeated name marker (/xff/0).
The marker is mentioned in the tools/perf/util/jitdump.h header, which describes
the jitdump binary format, and indicitates that the filename in a debug entry
is the same as the previous enrty.
In the function emit_lineno_info(), in the file tools/perf/util/genelf-debug.c,
the debug entry filename gets compared to the previous entry filename. If they
are not the same, a new filename is added to the DWARF line table. However,
since there is no check against '\xff\0', in some cases '\xff\0' is inserted
as the filename into the DWARF line table.
This can be seen with `objdump --dwarf=line` on the ELF file after `perf inject --jit`.
It also makes no source code information show up in 'perf annotate'.
Signed-off-by: Elisabeth Panholzer <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ Fixed a trailing white space, removed a subject prefix ]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
In the perf annotate view for LoongArch, there is no arrowed line
pointing to the target from the branch instruction. This issue is
caused by incorrect instruction association and parsing.
$ perf record alloc-6276705c94ad1398 # rust benchmark
$ perf report
0.28 │ ori $a1, $zero, 0x63
│ move $a2, $zero
10.55 │ addi.d $a3, $a2, 1(0x1)
│ sltu $a4, $a3, $s7
9.53 │ masknez $a4, $s7, $a4
│ sub.d $a3, $a3, $a4
12.12 │ st.d $a1, $fp, 24(0x18)
│ st.d $a3, $fp, 16(0x10)
16.29 │ slli.d $a2, $a2, 0x2
│ ldx.w $a2, $s8, $a2
12.77 │ st.w $a2, $sp, 724(0x2d4)
│ st.w $s0, $sp, 720(0x2d0)
7.03 │ addi.d $a2, $sp, 720(0x2d0)
│ addi.d $a1, $a1, -1(0xfff)
12.03 │ move $a2, $a3
│ → bne $a1, $s3, -52(0x3ffcc) # 82ce8 <test::bench::Bencher::iter+0x3f4>
2.50 │ addi.d $a0, $a0, 1(0x1)
This patch fixes instruction association issues, such as associating
branch instructions with jump_ops instead of call_ops, and corrects
false instruction matches. It also implements branch instruction parsing
specifically for LoongArch. With this patch, we will be able to see the
arrowed line.
0.79 │3ec: ori $a1, $zero, 0x63
│ move $a2, $zero
10.32 │3f4:┌─→addi.d $a3, $a2, 1(0x1)
│ │ sltu $a4, $a3, $s7
10.44 │ │ masknez $a4, $s7, $a4
│ │ sub.d $a3, $a3, $a4
14.17 │ │ st.d $a1, $fp, 24(0x18)
│ │ st.d $a3, $fp, 16(0x10)
13.15 │ │ slli.d $a2, $a2, 0x2
│ │ ldx.w $a2, $s8, $a2
11.00 │ │ st.w $a2, $sp, 724(0x2d4)
│ │ st.w $s0, $sp, 720(0x2d0)
8.00 │ │ addi.d $a2, $sp, 720(0x2d0)
│ │ addi.d $a1, $a1, -1(0xfff)
11.99 │ │ move $a2, $a3
│ └──bne $a1, $s3, 3f4
3.17 │ addi.d $a0, $a0, 1(0x1)
Signed-off-by: WANG Rui <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Huacai Chen <[email protected]>
Cc: Tiezhu Yang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: WANG Xuerui <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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Remove the "struct mutex lock" variable from annotation that is
allocated per symbol. This removes in the region of 40 bytes per
symbol allocation. Use a sharded mutex where the number of shards is
set to the number of CPUs. Assuming good hashing of the annotation
(done based on the pointer), this means in order to contend there
needs to be more threads than CPUs, which is not currently true in any
perf command. Were contention an issue it is straightforward to
increase the number of shards in the mutex.
On my Debian/glibc based machine, this reduces the size of struct
annotation from 136 bytes to 96 bytes, or nearly 30%.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Yuan Can <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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Per object mutexes may come with significant memory cost while a
global mutex can suffer from unnecessary contention. A sharded mutex
is a compromise where objects are hashed and then a particular mutex
for the hash of the object used. Contention can be controlled by the
number of shards.
v2. Use hashmap.h's hash_bits in case of contention from alignment of
objects.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Yuan Can <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
What we need to calculate is the size of the object, not the size of the
pointer.
Fixed: 51cfe7a3e87e ("perf python: Avoid 2 leak sanitizer issues")
Signed-off-by: Li Dong <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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The malloc() function may return NULL when it fails,
which may cause null pointer deference in add_cmdname(),
add Null check for return value of malloc().
Found by our static analysis tool.
Signed-off-by: Chenyuan Mi <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
|
./tools/perf/util/parse-events.c:1466:2-3: Unneeded semicolon
Signed-off-by: Mingtong Bao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|
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evsel__compute_group_pmu_name()
The newline is missing for pr_debug message in
evsel__compute_group_pmu_name(), fix it.
Before:
# perf --debug verbose=2 record -e cpu-clock true
<SNIP>
No PMU found for 'cycles:u'No PMU found for 'instructions:u'------------------------------------------------------------
perf_event_attr:
type 1
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|PERIOD
read_format ID|LOST
disabled 1
inherit 1
mmap 1
comm 1
freq 1
enable_on_exec 1
task 1
sample_id_all 1
exclude_guest 1
mmap2 1
comm_exec 1
ksymbol 1
bpf_event 1
------------------------------------------------------------
<SNIP>
After:
# perf --debug verbose=2 record -e cpu-clock true
<SNIP>
No PMU found for 'cycles:u'
No PMU found for 'instructions:u'
------------------------------------------------------------
perf_event_attr:
type 1
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|PERIOD
read_format ID|LOST
disabled 1
inherit 1
mmap 1
comm 1
freq 1
enable_on_exec 1
task 1
sample_id_all 1
exclude_guest 1
mmap2 1
comm_exec 1
ksymbol 1
bpf_event 1
------------------------------------------------------------
<SNIP>
Signed-off-by: Yang Jihong <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
|