Peter Zijlstra e4b64d34a4 sched/fair: Untangle NEXT_BUDDY and pick_next_task() ...

[ Upstream commit 2a77e4be12 ]

There are 3 sites using set_next_buddy() and only one is conditional
on NEXT_BUDDY, the other two sites are unconditional; to note:

  - yield_to_task()
  - cgroup dequeue / pick optimization

However, having NEXT_BUDDY control both the wakeup-preemption and the
picking side of things means its near useless.

Fixes: 147f3efaa2 ("sched/fair: Implement an EEVDF-like scheduling policy")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20241129101541.GA33464@noisy.programming.kicks-ass.net
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-02-08 09:56:53 +01:00

3.2 KiB

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