From: Rolf Eike Beer <eike-kernel@sf-tec.de>
To: John David Anglin <dave.anglin@bell.net>
Cc: linux-parisc List <linux-parisc@vger.kernel.org>,
Helge Deller <deller@gmx.de>,
James Bottomley <James.Bottomley@hansenpartnership.com>
Subject: Re: [PATCH] parisc: Improve LWS-CAS performance
Date: Mon, 12 May 2014 08:11:37 +0200 [thread overview]
Message-ID: <5283741.MSteB7R1e7@caliban.sf-tec.de> (raw)
In-Reply-To: <BLU0-SMTP178D56FBECCDEE0B3D0BE6974A0@phx.gbl>
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Am Sonntag, 11. Mai 2014, 18:40:50 schrieb John David Anglin:
> The attached change significantly improves the performance of the LWS-
> CAS code in syscall.S.
> This allows a number of packages to build (e.g., zeromq3, gtest and
> libxs) that previously failed because
> slow LWS-CAS performance under contention. In particular, interrupts
> taken while the lock was taken
> degraded performance significantly.
Sounds cool ;)
The label cas_wouldblock would now only be defined in SMP case, which looks
odd. Since I can't find any references to it I think it should just be dropped.
Eike
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next prev parent reply other threads:[~2014-05-12 6:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-11 22:40 [PATCH] parisc: Improve LWS-CAS performance John David Anglin
2014-05-12 6:11 ` Rolf Eike Beer [this message]
2014-05-12 14:33 ` John David Anglin
2014-05-12 15:04 ` Aw: " Helge Deller
2014-05-14 3:31 ` Carlos O'Donell
2014-05-14 19:12 ` Helge Deller
2014-05-14 19:28 ` John David Anglin
2014-05-15 12:33 ` [PATCH] parisc: Improve LWS-CAS performance (take 2) John David Anglin
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