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| author | Mark-PK Tsai <mark-pk.tsai@mediatek.com> | 2022-04-26 20:24:07 +0800 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-04-26 17:58:52 -0400 |
| commit | 6621a7004684bfcff5af4c8e4d37989941f42a6b (patch) | |
| tree | 043f710efee917db850f3c43d7c583f7592b52fc /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py | |
| parent | ef9188bcc6ca1d8a2ad83e826b548e6820721061 (diff) | |
tracing: make tracer_init_tracefs initcall asynchronous
Move trace_eval_init() to subsys_initcall to make it start
earlier.
And to avoid tracer_init_tracefs being blocked by
trace_event_sem which trace_eval_init() hold [1],
queue tracer_init_tracefs() to eval_map_wq to let
the two works being executed sequentially.
It can speed up the initialization of kernel as result
of making tracer_init_tracefs asynchronous.
On my arm64 platform, it reduce ~20ms of 125ms which total
time do_initcalls spend.
Link: https://lkml.kernel.org/r/20220426122407.17042-3-mark-pk.tsai@mediatek.com
[1]: https://lore.kernel.org/r/68d7b3327052757d0cd6359a6c9015a85b437232.camel@pengutronix.de
Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py')
0 files changed, 0 insertions, 0 deletions