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    SubjectRe: [PATCH 0/3] resend, cpuset/hotplug fixes
    On Fri, 2009-09-11 at 15:15 +0800, Lai Jiangshan wrote:
    > One other minor thing:
    > Oleg's patch may introduce a trouble in PREEEMPT_RT tree, because
    > spinlock in RT is also mutex. Likely I'm wrong.

    But they have priority-inheritance, hence you cannot create a deadlock
    through preemption. If the kstopmachine thread blocks on a mutex, the
    owner gets boosted to kstopmachine's prio and runs to completion, after
    that kstopmachine continues.

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      Last update: 2009-09-11 10:33    [W:0.019 / U:0.828 seconds]
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