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| author | Song Chen <chensong_2000@189.cn> | 2021-01-28 09:35:13 +0800 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-02-02 17:02:07 -0500 |
| commit | 4b9091e1c1948dea3b0b097496f308ede897d665 (patch) | |
| tree | c5ae6bb4b327cbd0eeaca47cb22c510846973840 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | befe6d946551d65cddbd32b9cb0170b0249fd5ed (diff) | |
kernel: trace: preemptirq_delay_test: add cpu affinity
The kernel thread executing test can run on any cpu, which might be
different cpu latency tracer is running on, as a result, the
big latency caused by preemptirq delay test can't be detected.
Therefore, the argument cpu_affinity is added to be passed to test,
ensure it's running on the same cpu with latency tracer.
e.g.
cyclictest -p 90 -m -c 0 -i 1000 -a 3
modprobe preemptirq_delay_test test_mode=preempt delay=500 \
burst_size=3 cpu_affinity=3
Link: https://lkml.kernel.org/r/1611797713-20965-1-git-send-email-chensong_2000@189.cn
Signed-off-by: Song Chen <chensong_2000@189.cn>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions