- Jan 23, 2023
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James Clark authored
There are some edge cases around estimated timestamps that can result in them going backwards. One is that after a discontinuity, the last used timestamp is set to 0. The duration of the next range is then subtracted which could result in an earlier timestamp than the last instruction. Fix this by not resetting the last timestamp used on a discontinuity, and make sure that new estimated timestamps are clamped to be later than that. Another case is that estimated timestamps could compound over time to end up being more than the next real timestamp in the trace. Fix this by clamping the estimates in cs_etm_decoder__do_soft_timestamp() to be no later than it. cs_etm_decoder__do_soft_timestamp() also updated next_cs_timestamp, which meant that the next real timestamp was lost and not stored anywhere. Fix that by only updating cs_timestamp for estimates and keep next_cs_timestamp untouched. Finally, use next_cs_timestamp to signify if a timestamp has been received previously. Because cs_timestamp has the first range subtracted, it could technically go to 0 which would break the logic. Testing ======= It can be verified that timestamps don't go backwards when tracing on a single core with the following commands. Across multiple cores it's expected that timestamps are interleaved: $ perf record -e cs_etm/@tmc_etr0/k -C 4 taskset -c 4 sleep 1 $ perf script --itrace=i1ns --ns -Fcomm,tid,pid,time,cpu,event,ip,sym,addr,symoff,flags,callindent > itrace $ sed 's/://g' itrace | awk -F ' ' ' { print $4 } ' | awk '{ if ($1 < prev) { print "line:" NR " " $0 } {prev=$1}}' Reported-by:
Tanmay Jagdale <tanmay@marvell.com> Signed-off-by:
James Clark <james.clark@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-9-james.clark@arm.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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German Gomez authored
If virtual timestamps are detected, set sample time field accordingly, otherwise warn the user that the samples will not include accurate time data. | Test notes (FEAT_TRF platform) | | $ ./perf record -e cs_etm//u -a -- sleep 4 | $ ./perf script --fields +time | perf 422 [000] 163.375100: 1 branches:uH: 0 [unknown] ([unknown]) | perf 422 [000] 163.375100: 1 branches:uH: ffffb8009544 ioctl+0x14 (/lib/aarch64-linux-gnu/libc-2.27.so) | perf 422 [000] 163.375100: 1 branches:uH: aaaaab6bebf4 perf_evsel__run_ioctl+0x90 (/home/german/linux/tools/perf/perf) | [...] | perf 422 [000] 167.393100: 1 branches:uH: aaaaab6bda00 __xyarray__entry+0x74 (/home/german/linux/tools/perf/perf) | perf 422 [000] 167.393099: 1 branches:uH: aaaaab6bda0c __xyarray__entry+0x80 (/home/german/linux/tools/perf/perf) | perf 422 [000] 167.393099: 1 branches:uH: ffffb8009538 ioctl+0x8 (/lib/aarch64-linux-gnu/libc-2.27.so) | | The time from the first sample to the last sample is 4 seconds Now that times are converted to nanoseconds, also try to estimate the timestamps more accurately be dividing by some fixed value for instructions per ns. This prevents long ranges from being estimated too far in the past than would be realistic. Signed-off-by:
German Gomez <german.gomez@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-8-james.clark@arm.com Signed-off-by:
James Clark <james.clark@arm.com> Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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German Gomez authored
Read the value of ts_source exposed by the driver and store it in the ETMv4 and ETE header. If the interface doesn't exist (such as in older Kernels), defaults to a safe value of -1. Signed-off-by:
German Gomez <german.gomez@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-7-james.clark@arm.com Signed-off-by:
James Clark <james.clark@arm.com> Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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German Gomez authored
Previously, adding a new parameter at the end of ETMv4 meant adding it somewhere in the middle of ETE, which is not supported by the current header version. Reviewed-by:
Mike Leach <mike.leach@linaro.org> Signed-off-by:
German Gomez <german.gomez@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-6-james.clark@arm.com Signed-off-by:
James Clark <james.clark@arm.com> Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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German Gomez authored
Add a utility function perf_pmu__file_exists() to check if a given pmu file exists in the sysfs filesystem. Signed-off-by:
German Gomez <german.gomez@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-5-james.clark@arm.com Signed-off-by:
James Clark <james.clark@arm.com> Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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James Clark authored
Use the new perf_pmu__pathname_scnprintf() instead. No functional changes. Reviewed-by:
Leo Yan <leo.yan@linaro.org> Signed-off-by:
James Clark <james.clark@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-4-james.clark@arm.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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James Clark authored
Remove some code that duplicates existing methods. Copy strings where const strings are required. No functional changes. Committer notes: Add a stub for erf_pmu__scan_file() in tools/perf/util/python.c not to drag tools/perf/util/pmu.c into the python binding. This fixes 'perf test python' at this point in this patchset. Reviewed-by:
Leo Yan <leo.yan@linaro.org> Signed-off-by:
James Clark <james.clark@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-3-james.clark@arm.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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James Clark authored
The pattern for accessing EVENT_SOURCE_DEVICE_PATH is duplicated in a few places, so add two utility functions to cover it. Also just use perf_pmu__scan_file() instead of pmu_type() which already does the same thing. No functional changes. Reviewed-by:
Leo Yan <leo.yan@linaro.org> Signed-off-by:
James Clark <james.clark@arm.com> Acked-by:
Suzuki Poulouse <suzuki.poulose@arm.com> Tested-by:
Tanmay Jagdale <tanmay@marvell.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: George Cherian <gcherian@marvell.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Linu Cherian <lcherian@marvell.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230120143702.4035046-2-james.clark@arm.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
In the context of LBR stitching documentation. Signed-off-by:
Ian Rogers <irogers@google.com> Acked-by:
Kan Liang <kan.liang@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sandipan Das <sandipan.das@amd.com> Link: https://lore.kernel.org/r/20230119201036.156441-1-irogers@google.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Make the code more readable by checking for SHT_RELA and SHT_REL type earlier. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-11-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
SHT_REL and SHT_RELA are handled the same way. Simplify by combining the handling. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-10-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Create a sensible name for .plt entries with no symbol. Example: Before: $ perf test --dso /usr/lib/x86_64-linux-gnu/libc.so.6 -vv Symbols 2>/tmp/cmp1.txt After: $ perf test --dso /usr/lib/x86_64-linux-gnu/libc.so.6 -vv Symbols 2>/tmp/cmp2.txt $ diff /tmp/cmp1.txt /tmp/cmp2.txt 4c4 < test child forked, pid 53043 --- > test child forked, pid 54372 23,62c23,62 < 280f0-28100 g @plt < 28100-28110 g @plt < 28110-28120 g @plt < 28120-28130 g @plt < 28130-28140 g @plt < 28140-28150 g @plt < 28150-28160 g @plt < 28160-28170 g @plt < 28170-28180 g @plt < 28180-28190 g @plt < 28190-281a0 g @plt < 281a0-281b0 g @plt < 281b0-281c0 g @plt < 281c0-281d0 g @plt < 281d0-281e0 g @plt < 281e0-281f0 g @plt < 281f0-28200 g @plt < 28200-28210 g @plt < 28210-28220 g @plt < 28220-28230 g @plt < 28230-28240 g @plt < 28240-28250 g @plt < 28250-28260 g @plt < 28260-28270 g @plt < 28270-28280 g @plt < 28280-28290 g @plt < 28290-282a0 g @plt < 282a0-282b0 g @plt < 282b0-282c0 g @plt < 282c0-282d0 g @plt < 282d0-282e0 g @plt < 282e0-282f0 g @plt < 282f0-28300 g @plt < 28300-28310 g @plt < 28310-28320 g @plt < 28320-28330 g @plt < 28330-28340 g @plt < 28340-28350 g @plt < 28350-28360 g @plt < 28360-28370 g @plt --- > 280f0-28100 g offset_0x280f0@plt > 28100-28110 g offset_0x28100@plt > 28110-28120 g offset_0x28110@plt > 28120-28130 g offset_0x28120@plt > 28130-28140 g offset_0x28130@plt > 28140-28150 g offset_0x28140@plt > 28150-28160 g offset_0x28150@plt > 28160-28170 g offset_0x28160@plt > 28170-28180 g offset_0x28170@plt > 28180-28190 g offset_0x28180@plt > 28190-281a0 g offset_0x28190@plt > 281a0-281b0 g offset_0x281a0@plt > 281b0-281c0 g offset_0x281b0@plt > 281c0-281d0 g offset_0x281c0@plt > 281d0-281e0 g offset_0x281d0@plt > 281e0-281f0 g offset_0x281e0@plt > 281f0-28200 g offset_0x281f0@plt > 28200-28210 g offset_0x28200@plt > 28210-28220 g offset_0x28210@plt > 28220-28230 g offset_0x28220@plt > 28230-28240 g offset_0x28230@plt > 28240-28250 g offset_0x28240@plt > 28250-28260 g offset_0x28250@plt > 28260-28270 g offset_0x28260@plt > 28270-28280 g offset_0x28270@plt > 28280-28290 g offset_0x28280@plt > 28290-282a0 g offset_0x28290@plt > 282a0-282b0 g offset_0x282a0@plt > 282b0-282c0 g offset_0x282b0@plt > 282c0-282d0 g offset_0x282c0@plt > 282d0-282e0 g offset_0x282d0@plt > 282e0-282f0 g offset_0x282e0@plt > 282f0-28300 g offset_0x282f0@plt > 28300-28310 g offset_0x28300@plt > 28310-28320 g offset_0x28310@plt > 28320-28330 g offset_0x28320@plt > 28330-28340 g offset_0x28330@plt > 28340-28350 g offset_0x28340@plt > 28350-28360 g offset_0x28350@plt > 28360-28370 g offset_0x28360@plt Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-9-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
perf expands the _init symbol over .plt because there are no PLT symbols at that point, but then dso__synthesize_plt_symbols() creates them. Fix by truncating the previous symbol and inserting a symbol for .plt header. Example: Before: $ perf test --dso `which uname` -v Symbols 74: Symbols : --- start --- test child forked, pid 191028 Problems creating module maps, continuing anyway... Testing /usr/bin/uname Overlapping symbols: 2000-25f0 g _init 2040-2050 g free@plt test child finished with -1 ---- end ---- Symbols: FAILED! $ perf test --dso `which uname` -vv Symbols 2>/tmp/cmp1.txt After: $ perf test --dso `which uname` -v Symbols 74: Symbols : --- start --- test child forked, pid 194291 Testing /usr/bin/uname test child finished with 0 ---- end ---- Symbols: Ok $ perf test --dso `which uname` -vv Symbols 2>/tmp/cmp2.txt $ diff /tmp/cmp1.txt /tmp/cmp2.txt 4,5c4 < test child forked, pid 191031 < Problems creating module maps, continuing anyway... --- > test child forked, pid 194296 9c8,9 < 2000-25f0 g _init --- > 2000-2030 g _init > 2030-2040 g .plt 100,103c100 < Overlapping symbols: < 2000-25f0 g _init < 2040-2050 g free@plt < test child finished with -1 --- > test child finished with 0 105c102 < Symbols: FAILED! --- > Symbols: Ok $ Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Tested-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-8-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
ss->dynsym is checked to be not NULL twice. Remove the first check because, in fact, there can be a plt with no dynsym, which is something that will be dealt with later. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-7-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Return zero directly instead of needless 'goto out_elf_end' that does the same thing. That allows 'err' to be initialized to -1 instead of having to change its value later. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-6-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Symbols should not be cached when there are more symbols still to add. Add dso__find_symbol_nocache() to facilitate that. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-5-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
The code expects non-zero plt_entry_size. Check it and add a debug message to print if it is zero. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-4-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Factor out get_plt_sizes() to make the code more readable and further changes to dso__synthesize_plt_symbols() easier to follow. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-3-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Add a test to check function symbols do not overlap and are not zero length. The main motivation for the test is to make it easier to review changes to PLT symbol synthesis i.e. changes to dso__synthesize_plt_symbols(). By default the test uses the perf executable as a test DSO, but a specific DSO can be specified via a new perf test option "--dso". The test is useful in the following ways: - Any DSO can be tested, even ones that do not run on the current architecture. For example, using cross-compiled DSOs to see how well perf handles different architectures. - With verbose > 1 (e.g. -vv), all the symbols are printed, which makes it easier to see issues. - perf removes duplicate symbols and expands zero-length symbols to reach the next symbol, however that is done before adding synthesized symbols, so the test is checking those also. Example: $ perf test -v Symbols 74: Symbols : --- start --- test child forked, pid 154918 Testing /home/user/bin/perf Overlapping symbols: 7d000-7f3a0 g _init 7d030-7d040 g __printf_chk@plt test child finished with -1 ---- end ---- Symbols: FAILED! Note the test fails because perf expands the _init symbol over the PLT because there are no PLT symbols at that point, but then dso__synthesize_plt_symbols() creates them. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Tested-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230120123456.12449-2-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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- Jan 20, 2023
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Ian Rogers authored
The count variable is incremented by multiple threads, doing so without an atomic operation causes thread sanitizer warnings. Switch to using relaxed atomics. Signed-off-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230114215251.271678-1-irogers@google.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
libtraceevent has added more levels of debug printout and with changes like: https://lore.kernel.org/linux-trace-devel/20210507095022.1079364-3-tz.stoyanov@gmail.com previously generated output like "registering plugin" is no longer displayed. This change makes it so that if perf's verbose debug output is enabled then the debug and info libtraceevent messages can be displayed. This change was previously posted: https://lore.kernel.org/linux-perf-users/20210923001024.550263-4-irogers@google.com/ and reverted: https://lore.kernel.org/linux-perf-users/20220109153446.160593-1-acme@kernel.org/ The previous failure was due to -Itools/lib being on the include path and libtraceevent in tools/lib being version 1.1.0. This meant that when LIBTRACEEVENT_VERSION was 1.3.0 the #if succeeded, but the header file for libtraceevent (taken from tools/lib rather than the intended /usr/include) was for version 1.1.0 and function definitions were missing. Since the previous issue the -Itools/lib include path has been removed: https://lore.kernel.org/lkml/20221109184914.1357295-1-irogers@google.com/ As well as libtraceevent 1.1.0 has been removed from tools/lib: https://lore.kernel.org/lkml/20221130062935.2219247-1-irogers@google.com/ Signed-off-by:
Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Eelco Chaudron <echaudro@redhat.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sean Christopherson <seanjc@google.com> Cc: Stephane Eranian <eranian@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Link: https://lore.kernel.org/r/20230111070641.1728726-3-irogers@google.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
Add a helper function that applies the mask to test, or returns false if libtraceevent is too old or not present. Signed-off-by:
Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Eelco Chaudron <echaudro@redhat.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sean Christopherson <seanjc@google.com> Cc: Stephane Eranian <eranian@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Link: https://lore.kernel.org/r/20230111070641.1728726-2-irogers@google.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
Switch HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE to be a version number test on libtraceevent being >= to version 1.5.0. This also corrects a greater-than test to be greater-than-or-equal. Fixes: b9a49f8c ("perf tools: Check if libtracevent has TEP_FIELD_IS_RELATIVE") Signed-off-by:
Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Eelco Chaudron <echaudro@redhat.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sean Christopherson <seanjc@google.com> Cc: Stephane Eranian <eranian@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Link: https://lore.kernel.org/lkml/20221205225940.3079667-3-irogers@google.com/ Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
The LLVM template is first echo-ed into command_out and then command_out executed. The echo surrounds the template with double quotes, however, the template itself may contain quotes. This is generally innocuous but in tools/perf/tests/bpf-script-test-prologue.c we see: ... SEC("func=null_lseek file->f_mode offset orig") ... where the first double quote ends the double quote of the echo, then the > redirects output into a file called f_mode. To avoid this inadvertent behavior substitute redirects and similar characters to be ASCII control codes, then substitute the output in the echo back again. Fixes: 5eab5a7e ("perf llvm: Display eBPF compiling command in debug output") Signed-off-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: bpf@vger.kernel.org Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: llvm@lists.linux.dev Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tom Rix <trix@redhat.com> Link: https://lore.kernel.org/r/20230105082609.344538-1-irogers@google.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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- Jan 19, 2023
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Kan Liang authored
The event list of the Emerald Rapids is the same as the Sapphire Rapids. Add the CPU model ID of Emerald Rapids into the mapfile.csv and point it to the event list of Sapphire Rapids. Signed-off-by:
Kan Liang <kan.liang@linux.intel.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230118175632.3165217-1-kan.liang@linux.intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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qinyu authored
Fix a minor typo in 'perf probe' doc. Fixes: 631c9def ("perf probe: Support --line option to show probable source-code lines") Signed-off-by:
qinyu <qinyu32@huawei.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Feilong Lin <linfeilong@huawei.com> Cc: Hewenliang <hewenliang4@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230116012143.432435-1-qinyu32@huawei.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
Add instruction mix related metrics. Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-10-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
Add PE utilization related metrics. In cpu_utilization metric, if it is neoverse-n2 which slots are 5, the real stall_slot need to subtract the cpu_cycles according to the neoverse-n2 errata [0]. [0] https://documentation-service.arm.com/static/636a66a64e6cf12278ad89cb?token= Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-9-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
Add branch related metrics. Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-8-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
Add cache related metrics. Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-7-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
Add TLB related metrics. Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-6-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
Add general topdown L1 metrics for neoverse-n2-v2. Due to the wrong count of stall_slot and stall_slot_frontend on neoverse-n2, the real stall_slot and real stall_slot_frontend need to subtract cpu_cycles, so overwrite the "MetricExpr" for neoverse-n2 which slots are 5. Reference from ARM neoverse-n2 errata notice [0], D117. Since neoverse-n2/neoverse-v2 does not yet support topdown L2, metric groups such as Cache, TLB, Branch, InstructionsMix and PEutilization will be added to further analysis of performance bottlenecks in the following patches. Reference from ARM PMU guide [1][2]. [0] https://documentation-service.arm.com/static/636a66a64e6cf12278ad89cb?token= [1] https://documentation-service.arm.com/static/628f8fa3dfaf015c2b76eae8?token= [2] https://documentation-service.arm.com/static/62cfe21e31ea212bb6627393?token= Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-5-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
The metrics of topdown L1 are from ARM sbsa7.0 platform design doc[0], D37-38, which are standard. So put them in the common file sbsa.json of arm64, so that other cores besides n2/v2 can also be reused. [0] https://documentation-service.arm.com/static/60250c7395978b529036da86?token= Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-4-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
Add general metrics support, so that some general metrics applicable to multiple architectures can be defined in the public JSON file like general events, and then add general metrics through "arch_std_event" in JSON file of different architecture. Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by:
Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-3-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jing Zhang authored
The slots in each architecture may be different, so add #slots literal to obtain the slots of different architectures, and the #slots can be applied in the metric. Currently, The #slots just support for arm64, and other architectures will return NAN. On arm64, the value of slots is from the register PMMIR_EL1.SLOT, which I can read in /sys/bus/event_source/device/armv8_pmuv3_*/caps/slots. PMMIR_EL1.SLOT might read as zero if the PMU version is lower than ID_AA64DFR0_EL1_PMUVer_V3P4 or the STALL_SLOT event is not implemented. Reviewed-by:
John Garry <john.g.garry@oracle.com> Signed-off-by:
Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Kilroy <andrew.kilroy@arm.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/1673940573-90503-2-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
Currently flame graph generation requires a d3-flame-graph template to be installed. Unfortunately this is hard to come by for things like Debian [1]. If the template isn't installed then ask if it should be downloaded from jsdelivr CDN. The downloaded HTML file is validated against an md5sum. If the download fails, generate a minimal flame graph with the javascript coming from links to jsdelivr CDN. v3. Adds a warning message and quits before download in live mode. v2. Change the warning to a prompt about downloading and add the --allow-download command line flag. Add an md5sum check for the downloaded HTML. [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=996839 Reviewed-by:
Andreas Gerstmayr <agerstmayr@redhat.com> Signed-off-by:
Ian Rogers <irogers@google.com> Cc: 996839@bugs.debian.org Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Brendan Gregg <brendan@intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin Spier <spiermar@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230118072409.147786-1-irogers@google.com # v3 discussion Link: https://lore.kernel.org/r/20230112220024.32709-1-irogers@google.com # v2 discussion Link: https://lore.kernel.org/r/CAP-5=fXi_9zdhTAoYApiFQoLURAvpEatFzU3uL23o3zs=z25ZQ@mail.gmail.com # v1 discussion Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hidLinus Torvalds authored
Pull HID fixes from Jiri Kosina: - fixes for potential empty list handling in HID core (Pietro Borrello) - fix for NULL pointer dereference in betop driver that could be triggered by malicious device (Pietro Borrello) - fixes for handling calibration data preventing division by zero in Playstation driver (Roderick Colenbrander) - fix for memory leak on error path in amd-sfh driver (Basavaraj Natikar) - other few assorted small fixes and device ID-specific handling * tag 'for-linus-2023011801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: betop: check shape of output reports HID: playstation: sanity check DualSense calibration data. HID: playstation: sanity check DualShock4 calibration data. HID: uclogic: Add support for XP-PEN Deco 01 V2 HID: revert CHERRY_MOUSE_000C quirk HID: check empty report_list in bigben_probe() HID: check empty report_list in hid_validate_values() HID: amd_sfh: Fix warning unwind goto HID: intel_ish-hid: Add check for ishtp_dma_tx_map
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull affs fix from David Sterba: "One minor fix for a KCSAN report" * tag 'affs-for-6.2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: affs: initialize fsdata in affs_truncate()
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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofsLinus Torvalds authored
Pull erofs fixes from Gao Xiang: "Two patches fixes issues reported by syzbot, one fixes a missing `domain_id` mount option in documentation and a minor cleanup: - Fix wrong iomap->length calculation post EOF, which could cause a WARN_ON in iomap_iter_done() (Siddh) - Fix improper kvcalloc() use with __GFP_NOFAIL (me) - Add missing `domain_id` mount option in documentation (Jingbo) - Clean up fscache option parsing (Jingbo)" * tag 'erofs-for-6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: erofs: clean up parsing of fscache related options erofs: add documentation for 'domain_id' mount option erofs: fix kvcalloc() misuse with __GFP_NOFAIL erofs/zmap.c: Fix incorrect offset calculation
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Linus Torvalds authored
Merge tag 'loongarch-fixes-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch fixes from Huacai Chen: "Fix a missing elf_hwcap, fix some stack unwinder bugs and two trivial cleanups" * tag 'loongarch-fixes-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: LoongArch: Add generic ex-handler unwind in prologue unwinder LoongArch: Strip guess unwinder out from prologue unwinder LoongArch: Use correct sp value to get graph addr in stack unwinders LoongArch: Get frame info in unwind_start() when regs is not available LoongArch: Adjust PC value when unwind next frame in unwinder LoongArch: Simplify larch_insn_gen_xxx implementation LoongArch: Use common function sign_extend64() LoongArch: Add HWCAP_LOONGARCH_CPUCFG to elf_hwcap
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