Messages in this thread | | | From | Mark-PK Tsai <> | Subject | [PATCH v3 0/2] tracing: make tracer_init_tracefs initcall asynchronous | Date | Wed, 23 Mar 2022 23:22:55 +0800 |
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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.
Mark-PK Tsai (2): tracing: Avoid adding tracer option before update_tracer_options tracing: make tracer_init_tracefs initcall asynchronous
kernel/trace/trace.c | 38 ++++++++++++++++++++++++++++---------- 1 file changed, 28 insertions(+), 10 deletions(-)
-- 2.18.0
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