On Mon, 21 Nov 2016, Oleg Nesterov wrote:
On 11/18, Davidlohr Bueso wrote:
@@ -12,7 +12,7 @@ struct percpu_rw_semaphore {
struct rcu_sync rss;
unsigned int __percpu *read_count;
struct rw_semaphore rw_sem;
- wait_queue_head_t writer;
+ st
On 11/18, Davidlohr Bueso wrote:
>
> @@ -12,7 +12,7 @@ struct percpu_rw_semaphore {
> struct rcu_sync rss;
> unsigned int __percpu *read_count;
> struct rw_semaphore rw_sem;
> - wait_queue_head_t writer;
> + struct swait_queue_head writer;
I won't argu
In the case of the percpu-rwsem, they don't need any of the
fancy/bulky features, such as custom callbacks or fine grained
wakeups.
Users that can convert to simple wait-queues are encouraged to
do so for the various rt and (indirect) performance benefits.
Signed-off-by: Davidlohr Bueso
---
inc
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