From: Petr Tesarik <ptesarik@suse.cz>
To: linux-kernel@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Subject: Re: [PATCH V2 0/2] enable irqs when waiting for rwlocks
Date: Fri, 31 Oct 2008 08:52:22 +0000 [thread overview]
Message-ID: <1225443142.6825.4.camel@elijah.suse.cz> (raw)
In-Reply-To: <1224777451.11530.52.camel@elijah.suse.cz>
On Thu, 2008-10-23 at 18:08 +0200, Petr Tesarik wrote:
> New in V2:
> * get rid of ugly #ifdef's in kernel/spinlock.h
> * convert __raw_{read|write}_lock_flags to an inline func
>
> SGI has observed that on large systems, interrupts are not serviced for
> a long period of time when waiting for a rwlock. The following patch
> series re-enables irqs while waiting for the lock, resembling the code
> which is already there for spinlocks.
>
> I only made the ia64 version, because the patch adds some overhead to
> the fast path. I assume there is currently no demand to have this for
> other architectures, because the systems are not so large. Of course,
> the possibility to implement raw_{read|write}_lock_flags for any
> architecture is still there.
>
> Petr Tesarik
Any comments on my second patch series? Not even an Acked-by? Dislike of
the concept? Should I post it again?
I feel a bit too uncertain what the status is...
Petr
next prev parent reply other threads:[~2008-10-31 8:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-23 15:57 [PATCH V2 0/2] enable irqs when waiting for rwlocks Petr Tesarik
2008-10-23 16:06 ` [PATCH V2 1/3] Factor out #ifdef's from kernel/spinlock.c to Petr Tesarik
2008-11-27 15:32 ` Peter Zijlstra
2008-10-23 16:06 ` [PATCH V2 2/3] Allow rwlocks to re-enable interrupts Petr Tesarik
2008-11-27 15:33 ` Peter Zijlstra
2008-10-31 8:52 ` Petr Tesarik [this message]
2008-10-31 20:22 ` [PATCH V2 0/2] enable irqs when waiting for rwlocks Luck, Tony
2008-11-03 11:46 ` Robin Holt
2008-11-03 21:47 ` Luck, Tony
2008-11-05 9:54 ` Petr Tesarik
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