perf/core: Don't pass task around when ctx sched in

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The current code pass task around for ctx_sched_in(), only
to get perf_cgroup of the task, then update the timestamp
of it and its ancestors and set them to active.

But we can use cpuctx->cgrp to get active perf_cgroup and
its ancestors since cpuctx->cgrp has been set before
ctx_sched_in().

This patch remove the task argument in ctx_sched_in()
and cleanup related code.

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220329154523.86438-2-zhouchengming@bytedance.com

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Chengming Zhou 2022-03-29 23:45:20 +08:00 • committed by Peter Zijlstra

parent e590928de7

commit a0827713e2

1 changed files with 26 additions and 32 deletions

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kernel/events/core.c

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