On Thu, Sep 07, 2017 at 02:33:49PM +0200, Greg KH wrote:
> On Thu, Sep 07, 2017 at 01:57:42PM +0300, Cihangir Akturk wrote:
> > Unlocking a spin lock and then immediately locking without doing
> > anything useful in between buys us nothing, except wasting CPU cycles.
>
> Not always, it can be a "g
On Thu, Sep 07, 2017 at 01:57:42PM +0300, Cihangir Akturk wrote:
> Unlocking a spin lock and then immediately locking without doing
> anything useful in between buys us nothing, except wasting CPU cycles.
Not always, it can be a "gate" for other users of the lock.
Are you sure that is not what is
Unlocking a spin lock and then immediately locking without doing
anything useful in between buys us nothing, except wasting CPU cycles.
Also code size gets smaller.
Before:
text data bssdechex filename
70415 2356 4108 76879 12c4f
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd
