Messages in this thread | | | Date | Wed, 17 Apr 2024 15:55:57 -1000 | From | Tejun Heo <> | Subject | Re: [PATCH] workqueue: fix selection of wake_cpu in kick_pool() |
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Hello,
On Wed, Apr 17, 2024 at 05:36:38PM +0200, Sven Schnelle wrote: > > This generally seems like a good idea but isn't this still racy? The CPU may > > go down between setting p->wake_cpu and wake_up_process(). > > Don't know without reading the source, but how does this code normally > protect against that?
Probably by wrapping determining the wake_cpu and the wake_up inside cpu_read_lock() section.
Thanks.
-- tejun
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