search for: 10e87e1

Displaying 5 results from an estimated 5 matches for "10e87e1".

[PATCH v10 10/19] qspinlock, x86: Allow unfair spinlock in a virtual guest
2014 May 08
1
[PATCH v10 10/19] qspinlock, x86: Allow unfair spinlock in a virtual guest
On Wed, May 07, 2014 at 11:01:38AM -0400, Waiman Long wrote: No, we want the unfair thing for VIRT, not PARAVIRT. > diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c > index 9e7659e..10e87e1 100644 > --- a/kernel/locking/qspinlock.c > +++ b/kernel/locking/qspinlock.c > @@ -227,6 +227,14 @@ static __always_inline int get_qlock(struct qspinlock *lock) > { > struct __qspinlock *l = (void *)lock; > > +#ifdef CONFIG_PARAVIRT_UNFAIR_LOCKS > + if (static_key_false...
[PATCH v10 10/19] qspinlock, x86: Allow unfair spinlock in a virtual guest
2014 May 08
1
[PATCH v10 10/19] qspinlock, x86: Allow unfair spinlock in a virtual guest
On Wed, May 07, 2014 at 11:01:38AM -0400, Waiman Long wrote: No, we want the unfair thing for VIRT, not PARAVIRT. > diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c > index 9e7659e..10e87e1 100644 > --- a/kernel/locking/qspinlock.c > +++ b/kernel/locking/qspinlock.c > @@ -227,6 +227,14 @@ static __always_inline int get_qlock(struct qspinlock *lock) > { > struct __qspinlock *l = (void *)lock; > > +#ifdef CONFIG_PARAVIRT_UNFAIR_LOCKS > + if (static_key_false...
[PATCH v10 10/19] qspinlock, x86: Allow unfair spinlock in a virtual guest
2014 May 07
0
[PATCH v10 10/19] qspinlock, x86: Allow unfair spinlock in a virtual guest
...RE_HYPERVISOR)) + return 0; + + static_key_slow_inc(&paravirt_unfairlocks_enabled); + printk(KERN_INFO "Unfair spinlock enabled\n"); + + return 0; +} +early_initcall(unfair_locks_init_jump); + +#endif diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c index 9e7659e..10e87e1 100644 --- a/kernel/locking/qspinlock.c +++ b/kernel/locking/qspinlock.c @@ -227,6 +227,14 @@ static __always_inline int get_qlock(struct qspinlock *lock) { struct __qspinlock *l = (void *)lock; +#ifdef CONFIG_PARAVIRT_UNFAIR_LOCKS + if (static_key_false(&paravirt_unfairlocks_enabled)) +...
[PATCH v10 00/19] qspinlock: a 4-byte queue spinlock with PV support
2014 May 07
32
[PATCH v10 00/19] qspinlock: a 4-byte queue spinlock with PV support
v9->v10: - Make some minor changes to qspinlock.c to accommodate review feedback. - Change author to PeterZ for 2 of the patches. - Include Raghavendra KT's test results in patch 18. v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex
[PATCH v10 00/19] qspinlock: a 4-byte queue spinlock with PV support
2014 May 07
32
[PATCH v10 00/19] qspinlock: a 4-byte queue spinlock with PV support
v9->v10: - Make some minor changes to qspinlock.c to accommodate review feedback. - Change author to PeterZ for 2 of the patches. - Include Raghavendra KT's test results in patch 18. v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex