256d729c0b
gcBgMarkWorker G's are primarily scheduled by findRunnableGCWorker, but that no longer needs to be strictly enforced. Temporary preemption to a runq is fine when the P is not in use. We still releasem in gopark in the normal case for efficiency: if gcDrain stops because gp.preempt is set, then gopark would always preempt. That is fine, but inefficient, since it will reschedule simply to park again. Thus, we keep releasem in unlockf to skip this extra cycle. Change-Id: I6d1a42e3ca41b76227142a6b5bfb376c9213e3c9 Reviewed-on: https://go-review.googlesource.com/c/go/+/262349 Run-TryBot: Michael Pratt <mpratt@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> Trust: Michael Pratt <mpratt@google.com> |
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