On Sat, Apr 27, 2013 at 02:15:52PM -0700, Davidlohr Bueso wrote:
> From: Davidlohr Bueso
> Subject: [PATCH] rwsem: check counter to avoid cmpxchg calls
>
> This patch tries to reduce the amount of cmpxchg calls in the
> writer failed path by checking the counter value first before
> issuing the i
On Sat, Apr 27, 2013 at 2:15 PM, Davidlohr Bueso wrote:
> Hi Michel,
>
> On Fri, 2013-03-15 at 03:54 -0700, Michel Lespinasse wrote:
>> These patches extend Alex Shi's work (which added write lock stealing
>> on the rwsem slow path) in order to provide rwsem write lock stealing
>> on the fast path
On Fri, 2013-03-15 at 03:54 -0700, Michel Lespinasse wrote:
> These patches extend Alex Shi's work (which added write lock stealing
> on the rwsem slow path) in order to provide rwsem write lock stealing
> on the fast path (that is, without taking the rwsem's wait_lock).
Since none of Alex's origi
These patches extend Alex Shi's work (which added write lock stealing
on the rwsem slow path) in order to provide rwsem write lock stealing
on the fast path (that is, without taking the rwsem's wait_lock).
I initially sent a shorter series shortly before v3.9, however some
patches were doing too m
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