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authorJin Yao <[email protected]>2018-02-12 13:32:36 -0700
committerArnaldo Carvalho de Melo <[email protected]>2018-02-16 14:55:40 -0300
commit147c508f3004df6e2958f6c8867909531c2a15e2 (patch)
tree8c9c11681b06d493714e93f092e534ec071152a8 /tools/perf/scripts/python/export-to-postgresql.py
parent099c1130998fd2234a200b55d69713ec66d88325 (diff)
perf tools: Use target->per_thread and target->system_wide flags
Mathieu Poirier reports issue in commit ("73c0ca1eee3d perf thread_map: Enumerate all threads from /proc") that it has negative impact on 'perf record --per-thread'. It has the effect of creating a kernel event for each thread in the system for 'perf record --per-thread'. Mathieu Poirier's patch ("perf util: Do not reuse target->per_thread flag") can fix this issue by creating a new target->all_threads flag. This patch is based on Mathieu Poirier's patch but it doesn't use a new target->all_threads flag. This patch just uses 'target->per_thread && target->system_wide' as a condition to check for all threads case. Signed-off-by: Jin Yao <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Fixes: 73c0ca1eee3d ("perf thread_map: Enumerate all threads from /proc") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mathieu Poirier <[email protected]> [Fixed checkpatch warning about line over 80 characters] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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