From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/9] Clean up SMP IPI support
Date: Wed, 17 Nov 2010 17:21:03 +0000 [thread overview]
Message-ID: <20101117172103.GD5308@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1290014248.2351.63.camel@e102109-lin.cambridge.arm.com>
On Wed, Nov 17, 2010 at 05:17:28PM +0000, Catalin Marinas wrote:
> On Wed, 2010-11-17 at 17:07 +0000, Catalin Marinas wrote:
> > On Mon, 2010-11-15 at 17:55 +0000, Russell King - ARM Linux wrote:
> > > This series is aimed at cleaning up our SMP IPI support. As has been
> > > recently pointed out, we have a spinlock in percpu data, which is not
> > > very nice.
> > >
> > > If we switch to using the GIC SGIs, one for each IPI function, then
> > > we don't need the mask of ipi bits indicating what work needs to be
> > > done. This allows us to get rid of the troublesome spinlock in
> > > send_ipi_message().
> >
> > FWIW, the patches look fine to me (though I have tested them):
> ^^^^
> I meant I have *not* tested them.
They work fine on my Versatile Express, but I've not checked the
Realview EB yet.
prev parent reply other threads:[~2010-11-17 17:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-15 17:55 [PATCH 0/9] Clean up SMP IPI support Russell King - ARM Linux
2010-11-15 17:58 ` [PATCH 1/9] ARM: remove obsolete smp_cross_call_done() Russell King - ARM Linux
2010-11-15 17:58 ` [PATCH 2/9] ARM: smp: pass an ipi number to smp_cross_call() Russell King - ARM Linux
2010-11-17 11:05 ` Catalin Marinas
2010-11-15 17:58 ` [PATCH 3/9] ARM: smp: avoid using bitmasks and locks for IPIs, use hardware instead Russell King - ARM Linux
2010-11-17 17:06 ` Catalin Marinas
2010-11-17 17:19 ` Russell King - ARM Linux
2010-11-17 17:28 ` Catalin Marinas
2010-11-15 17:58 ` [PATCH 4/9] ARM: include local timer irq stats only when local timers configured Russell King - ARM Linux
2010-11-15 17:58 ` [PATCH 5/9] ARM: smp: provide accessors for irq_stat data Russell King - ARM Linux
2010-11-15 17:58 ` [PATCH 6/9] ARM: smp: move ipi_count into irq_stat structure Russell King - ARM Linux
2010-11-15 17:59 ` [PATCH 7/9] ARM: fix /proc/interrupts formatting Russell King - ARM Linux
2010-11-15 17:59 ` [PATCH 8/9] ARM: smp: provide individual IPI interrupt statistics Russell King - ARM Linux
2010-11-15 17:59 ` [PATCH 9/9] ARM: smp: collect IPI and local timer IRQs for /proc/stat Russell King - ARM Linux
2010-11-17 17:07 ` [PATCH 0/9] Clean up SMP IPI support Catalin Marinas
2010-11-17 17:17 ` Catalin Marinas
2010-11-17 17:21 ` Russell King - ARM Linux [this message]
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