sched: Fix modifying donor->blocked on without proper locking

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Introduce an action enum in find_proxy_task() which allows
us to handle work needed to be done outside the mutex.wait_lock
and task.blocked_lock guard scopes.

This ensures proper locking when we clear the donor's blocked_on
pointer in proxy_deactivate(), and the switch statement will be
useful as we add more cases to handle later in this series.

Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Link: https://patch.msgid.link/20260324191337.1841376-6-jstultz@google.com

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John Stultz 2026-03-24 19:13:20 +00:00 • committed by Peter Zijlstra

parent fa4a1ff8ab

commit 56f4b24267

1 changed files with 13 additions and 3 deletions

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kernel/sched/core.c

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