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Groups > linux.kernel > #1432067
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface |
| Date | 2016-06-27 16:10 +0200 |
| Message-ID | <rOFoD-1gZ-49@gated-at.bofh.it> (permalink) |
| References | <rOF5f-Uh-5@gated-at.bofh.it> <rOF5f-Uh-15@gated-at.bofh.it> <rOFoC-1gZ-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, Jun 27, 2016 at 04:00:43PM +0200, Peter Zijlstra wrote:
> On Mon, Jun 27, 2016 at 01:41:28PM -0400, Pan Xinhui wrote:
> > +++ b/include/linux/sched.h
> > @@ -3293,6 +3293,15 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
> >
> > #endif /* CONFIG_SMP */
> >
> > +#ifdef arch_vcpu_is_preempted
> > +static inline bool vcpu_is_preempted(int cpu)
> > +{
> > + return arch_vcpu_is_preempted(cpu);
> > +}
> > +#else
> > +#define vcpu_is_preempted(cpu) false
> > +#endif
>
> #ifndef vcpu_is_preempted
> #define vcpu_is_preempted(cpu) (false)
> #endif
>
> Is so much simpler...
>
> Also, please Cc the virt list so that other interested parties can
> comment, and maybe also the s390 folks.
And before you hurry off to post again, add a patch doing
mutex_spin_on_owner() and rwsem_spin_in_owner().
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[PATCH 0/3] implement vcpu preempted check Pan Xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-27 15:50 +0200
[PATCH 2/3] powerpc/spinlock: support vcpu preempted check Pan Xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-27 15:50 +0200
Re: [PATCH 2/3] powerpc/spinlock: support vcpu preempted check Peter Zijlstra <peterz@infradead.org> - 2016-06-27 16:20 +0200
Re: [PATCH 2/3] powerpc/spinlock: support vcpu preempted check xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-28 05:30 +0200
Re: [PATCH 2/3] powerpc/spinlock: support vcpu preempted check Boqun Feng <boqun.feng@gmail.com> - 2016-06-27 17:00 +0200
Re: [PATCH 2/3] powerpc/spinlock: support vcpu preempted check xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-28 05:50 +0200
Re: [PATCH 2/3] powerpc/spinlock: support vcpu preempted check Boqun Feng <boqun.feng@gmail.com> - 2016-06-28 07:10 +0200
Re: [PATCH 2/3] powerpc/spinlock: support vcpu preempted check xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-28 07:40 +0200
[PATCH 1/3] kernel/sched: introduce vcpu preempted check interface Pan Xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-27 15:50 +0200
Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface Peter Zijlstra <peterz@infradead.org> - 2016-06-27 16:10 +0200
Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface Peter Zijlstra <peterz@infradead.org> - 2016-06-27 16:10 +0200
Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-28 05:20 +0200
Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface Heiko Carstens <heiko.carstens@de.ibm.com> - 2016-06-28 09:10 +0200
Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-28 11:50 +0200
Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface Boqun Feng <boqun.feng@gmail.com> - 2016-06-27 16:10 +0200
Re: [PATCH 1/3] kernel/sched: introduce vcpu preempted check interface xinhui <xinhui.pan@linux.vnet.ibm.com> - 2016-06-28 05:20 +0200
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