On Mon, Oct 17, 2016 at 07:21:28PM -0400, Waiman Long wrote:
> On 10/07/2016 10:52 AM, Peter Zijlstra wrote:
> >@@ -600,7 +630,7 @@ __mutex_lock_common(struct mutex *lock,
> > mutex_acquire_nest(&lock->dep_map, subclass, 0, nest_lock, ip);
> >
> > if (__mutex_trylock(lock, false) ||
> >-
On 10/07/2016 10:52 AM, Peter Zijlstra wrote:
@@ -600,7 +630,7 @@ __mutex_lock_common(struct mutex *lock,
mutex_acquire_nest(&lock->dep_map, subclass, 0, nest_lock, ip);
if (__mutex_trylock(lock, false) ||
- mutex_optimistic_spin(lock, ww_ctx, use_ww_ctx)) {
+
On Thu, Oct 13, 2016 at 04:28:01PM +0100, Will Deacon wrote:
> On Fri, Oct 07, 2016 at 04:52:51PM +0200, Peter Zijlstra wrote:
> > @@ -457,15 +472,20 @@ static bool mutex_optimistic_spin(struct
> > * release the lock or go to sleep.
> > */
> > owner = __mutex_
On Fri, Oct 07, 2016 at 04:52:51PM +0200, Peter Zijlstra wrote:
> From: Waiman Long
>
> This patch makes the waiter that sets the HANDOFF flag start spinning
> instead of sleeping until the handoff is complete or the owner
> sleeps. Otherwise, the handoff will cause the optimistic spinners to
> a
From: Waiman Long
This patch makes the waiter that sets the HANDOFF flag start spinning
instead of sleeping until the handoff is complete or the owner
sleeps. Otherwise, the handoff will cause the optimistic spinners to
abort spinning as the handed-off owner may not be running.
Cc: Ingo Molnar
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