Re: [PATCH v2 00/14] Introducing TIF_NOTIFY_IPI flag

Peter Zijlstra <[email protected]>
Newsgroups gmane.linux.ports.parisc,gmane.linux.kernel,gmane.linux.ports.alpha,gmane.linux.ports.arm.kernel,gmane.linux.ports.ppc64.devel,gmane.linux.ports.sh.devel,gmane.linux.ports.sparc,gmane.linux.power-management.general
Message-ID <[email protected]> 
On Fri, Jun 14, 2024 at 12:48:37PM +0200, Vincent Guittot wrote:

> The main problem is that need_resched becomes somewhat meaningless
> because it doesn't  only mean "I need to resched a task" and we have
> to add more tests around even for those not using polling

The converse problem is that you're adding a bunch of atomic ops that
might be avoided.

It might now need to set both the RESCHED and IPI flags -- and clear
them again.
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