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This patch adds logic so try_to_wake_up() will notice if we are waking a task where blocked_on == PROXY_WAKING, and if necessary dequeue the task so the wakeup will naturally return-migrate the donor task back to a cpu it can run on. This helps performance as we do the dequeue and wakeup under the locks normally taken in the try_to_wake_up() and avoids having to do proxy_force_return() from __schedule(), which has to re-take similar locks and then force a pick again loop. This was split out from the larger proxy patch, and significantly reworked. Credits for the original patch go to: Peter Zijlstra (Intel) <peterz@infradead.org> Juri Lelli <juri.lelli@redhat.com> Valentin Schneider <valentin.schneider@arm.com> Connor O'Brien <connoro@google.com> Signed-off-by: John Stultz <jstultz@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260512025635.2840817-6-jstultz@google.com