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Groups > linux.kernel > #1235316
| From | Steven Rostedt <rostedt@goodmis.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC][PATCH 09/11] sched, x86: Kill saved_preempt_count |
| Date | 2015-09-29 17:50 +0200 |
| Message-ID | <qe5kf-2lV-35@gated-at.bofh.it> (permalink) |
| References | <qdZHQ-2IS-3@gated-at.bofh.it> <qdZHR-2IS-35@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, 29 Sep 2015 11:28:34 +0200 Peter Zijlstra <peterz@infradead.org> wrote: > With the introduction of the context switch preempt_count invariant, > and the demise of PREEMPT_ACTIVE, its pointless to save/restore the > per-cpu preemption count, it must always be 2. > > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Should we add a warn on someplace: WARN_ON_ONCE(preempt_count() != 2) ? -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[RFC][PATCH 09/11] sched, x86: Kill saved_preempt_count Peter Zijlstra <peterz@infradead.org> - 2015-09-29 11:50 +0200
Re: [RFC][PATCH 09/11] sched, x86: Kill saved_preempt_count Steven Rostedt <rostedt@goodmis.org> - 2015-09-29 17:50 +0200
Re: [RFC][PATCH 09/11] sched, x86: Kill saved_preempt_count Peter Zijlstra <peterz@infradead.org> - 2015-09-29 18:00 +0200
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