On 2016年06月27日 22:02, Peter Zijlstra wrote:
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...
fair enough.
Also, please Cc the virt list so that other interested parties can
comment, and maybe also the s390 folks.
oh. I forgot that. maybe we need cc more.
root@ltcalpine2-lp13:~/linux# find ./arch -name kvm
./arch/arm/kvm
./arch/arm64/kvm
./arch/mips/kvm
./arch/powerpc/kvm
./arch/s390/kvm
./arch/tile/kvm
./arch/x86/kvm
And before you hurry off to post again, add a patch doing
mutex_spin_on_owner() and rwsem_spin_in_owner().
will do that.
thanks for your suggestion. :)
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