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author | Mike Leach <mike.leach@linaro.org> | 2023-03-31 06:56:44 +0100 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-04-04 09:39:57 -0300 |
commit | e5fa5b4110fe7d0ab08252943fc47072a7ff6c9d (patch) | |
tree | 9d39636c06f1f3634a32113c0ef3cecd12b53b01 /tools/perf/util | |
parent | 092772955568fa848b1e782e6cb3fa395eccea81 (diff) | |
download | linux-stable-e5fa5b4110fe7d0ab08252943fc47072a7ff6c9d.tar.gz linux-stable-e5fa5b4110fe7d0ab08252943fc47072a7ff6c9d.tar.bz2 linux-stable-e5fa5b4110fe7d0ab08252943fc47072a7ff6c9d.zip |
perf cs-etm: Update record event to use new Trace ID protocol
Trace IDs are now dynamically allocated.
Previously used the static association algorithm that is no longer
used. The 'cpu * 2 + seed' was outdated and broken for systems with high
core counts (>46). as it did not scale and was broken for larger
core counts.
Trace ID will now be sent in PERF_RECORD_AUX_OUTPUT_HW_ID record.
Legacy ID algorithm renamed and retained for limited backward
compatibility use.
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Acked-by: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Darren Hart <darren@os.amperecomputing.com>
Cc: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.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: Will Deacon <will@kernel.org>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230331055645.26918-2-mike.leach@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
0 files changed, 0 insertions, 0 deletions