Messages in this thread | | | Date | Mon, 12 Jul 2004 21:01:07 -0700 | From | Andrew Morton <> | Subject | Re: Preempt Threshold Measurements |
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Con Kolivas <kernel@kolivas.org> wrote: > > Gabriel Devenyi writes: > > > Well I'm not particularly educated in kernel internals yet, here's some > > reports from the system when its running. > > > > 6ms non-preemptible critical section violated 4 ms preempt threshold starting > > at do_munmap+0xd2/0x140 and ending at do_munmap+0xeb/0x140 > > Certainly the do_munmap and exit_mmap seem to be repeat offenders on my > machine too (more the latter in my case). >
This is a false positive. Nothing is setting need_resched(), so unmap_vmas() doesn't bother dropping the lock.
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