From: Jason Low <jason.low2@hp.com>
To: Davidlohr Bueso <davidlohr@hp.com>
Cc: peterz@infradead.org, mingo@kernel.org, aswin@hp.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH -tip v2 4/7] locking/mutex: Refactor optimistic spinning code
Date: Wed, 30 Jul 2014 17:56:41 -0700 [thread overview]
Message-ID: <1406768201.2304.1.camel@j-VirtualBox> (raw)
In-Reply-To: <1406752916-3341-4-git-send-email-davidlohr@hp.com>
On Wed, 2014-07-30 at 13:41 -0700, Davidlohr Bueso wrote:
> When we fail to acquire the mutex in the fastpath, we end up calling
> __mutex_lock_common(). A *lot* goes on in this function. Move out the
> optimistic spinning code into mutex_optimistic_spin() and simplify
> the former a bit. Furthermore, this is similar to what we have in
> rwsems. No logical changes.
>
> Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Acked-by: Jason Low <jason.low2@hp.com>
next prev parent reply other threads:[~2014-07-31 0:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-30 20:41 [PATCH -tip v2 1/7] locking/mutex: Standardize arguments in lock/unlock slowpaths Davidlohr Bueso
2014-07-30 20:41 ` [PATCH -tip v2 2/7] locking/mutex: Document quick lock release when unlocking Davidlohr Bueso
2014-08-13 10:55 ` [tip:locking/core] locking/mutexes: " tip-bot for Davidlohr Bueso
2014-07-30 20:41 ` [PATCH -tip v2 3/7] locking/mcs: Remove obsolete comment Davidlohr Bueso
2014-08-13 10:55 ` [tip:locking/core] " tip-bot for Davidlohr Bueso
2014-07-30 20:41 ` [PATCH -tip v2 4/7] locking/mutex: Refactor optimistic spinning code Davidlohr Bueso
2014-07-31 0:56 ` Jason Low [this message]
2014-08-13 10:55 ` [tip:locking/core] locking/mutexes: " tip-bot for Davidlohr Bueso
2014-07-30 20:41 ` [PATCH -tip v2 5/7] locking/mutex: Use MUTEX_SPIN_ON_OWNER when appropriate Davidlohr Bueso
2014-08-13 10:55 ` [tip:locking/core] locking/mutexes: " tip-bot for Davidlohr Bueso
2014-07-30 20:41 ` [PATCH -tip v2 6/7] locking: Move docs into Documentation/locking/ Davidlohr Bueso
2014-07-30 21:02 ` Randy Dunlap
2014-07-31 6:53 ` Peter Zijlstra
2014-08-13 10:56 ` [tip:locking/core] locking/Documentation: Move locking related " tip-bot for Davidlohr Bueso
2014-07-30 20:41 ` [PATCH -tip v2 7/7] Documentation: Update locking/mutex-design.txt disadvantages Davidlohr Bueso
2014-08-13 10:56 ` [tip:locking/core] locking/Documentation: Update locking/ mutex-design.txt disadvantages tip-bot for Davidlohr Bueso
2014-08-13 10:54 ` [tip:locking/core] locking/mutexes: Standardize arguments in lock /unlock slowpaths tip-bot for Davidlohr Bueso
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