From: Jason Low <jason.low2@hp.com>
To: Davidlohr Bueso <davidlohr@hp.com>
Cc: Dave Chinner <david@fromorbit.com>,
Peter Zijlstra <peterz@infradead.org>,
Tim Chen <tim.c.chen@linux.intel.com>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [regression, 3.16-rc] rwsem: optimistic spinning causing performance degradation
Date: Fri, 04 Jul 2014 20:14:25 -0700 [thread overview]
Message-ID: <1404530065.2572.8.camel@j-VirtualBox> (raw)
In-Reply-To: <1404463996.2457.10.camel@buesod1.americas.hpqcorp.net>
On Fri, 2014-07-04 at 01:53 -0700, Davidlohr Bueso wrote:
> On Fri, 2014-07-04 at 00:06 -0700, Jason Low
> > Subject: [PATCH] rwsem: In rwsem_can_spin_on_owner(), return false if no owner
>
> Could we change the subject to something more descriptive, ie:
>
> rwsem: Allow conservative optimistic spinning for reader/writer paths
Sure, a Subject like this would better explain what is the effect of the
patch.
next prev parent reply other threads:[~2014-07-05 3:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1404413420.8764.42.camel@j-VirtualBox>
[not found] ` <1404416236.3179.18.camel@buesod1.americas.hpqcorp.net>
2014-07-03 20:08 ` [regression, 3.16-rc] rwsem: optimistic spinning causing performance degradation Davidlohr Bueso
2014-07-04 1:01 ` Dave Chinner
2014-07-04 1:46 ` Jason Low
2014-07-04 1:54 ` Jason Low
2014-07-04 6:13 ` Dave Chinner
2014-07-04 7:06 ` Jason Low
2014-07-04 8:21 ` Dave Chinner
2014-07-04 8:53 ` Davidlohr Bueso
2014-07-05 3:14 ` Jason Low [this message]
2014-07-04 7:52 ` Peter Zijlstra
2014-07-04 8:40 ` Davidlohr Bueso
2014-07-05 3:49 ` Jason Low
[not found] ` <CAAW_DMjgd5+EOvZX7_iZe-jHp=00Nf7MX3z6hBCRPgOfqnMtEA@mail.gmail.com>
2014-07-14 9:55 ` Peter Zijlstra
2014-07-14 17:10 ` Jason Low
2014-07-15 2:17 ` Dave Chinner
2014-07-16 19:20 ` [tip:locking/urgent] locking/rwsem: Allow conservative optimistic spinning when readers have lock tip-bot for Jason Low
2014-07-03 2:32 [regression, 3.16-rc] rwsem: optimistic spinning causing performance degradation Dave Chinner
2014-07-03 3:31 ` Davidlohr Bueso
2014-07-03 4:59 ` Dave Chinner
2014-07-03 5:39 ` Dave Chinner
2014-07-03 7:38 ` Peter Zijlstra
2014-07-03 7:56 ` Dave Chinner
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