ger.kernel.org
>Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; Stephane Eranian
>Subject: Re: [PATCH] i386 add idle notifier (take 2)
>
>Hello,
>
>[This is the second take due to stray '}' in the patch. Sorry
>about that]
>
>Here is a patch that adds an idle notifi
Hi,
On Thu, Nov 30, 2006 at 12:21:41AM +0100, Andi Kleen wrote:
>
> > An alternative approach might be to change perfmon so that it works out
> > whether it is being called by an idle thread
> >
> > if ((current->flags & PF_IDLE) && (other stuff to do with irqs?))
> > return;
>
> An alternative approach might be to change perfmon so that it works out
> whether it is being called by an idle thread
>
> if ((current->flags & PF_IDLE) && (other stuff to do with irqs?))
> return;
The problem is that the performance counters just keep running in the CPU.
On Wed, Nov 29, 2006 at 03:05:44PM -0800, Andrew Morton wrote:
> btw, I don't think anyone promised that __test_and_set_bit is atomic wrt
> interrupts on all architectures. Is OK for x86.
Correct. The generic version found in include/asm-generic/bitops/non-atomic.h
is not interrupt safe:
/**
*
On Wed, 29 Nov 2006 14:18:53 -0800
Stephane Eranian <[EMAIL PROTECTED]> wrote:
> Hello,
>
> On Wed, Nov 29, 2006 at 01:09:44PM -0800, Andrew Morton wrote:
> > On Wed, 29 Nov 2006 17:09:39 +
> > Christoph Hellwig <[EMAIL PROTECTED]> wrote:
> >
> > > On Wed, Nov 29, 2006 at 08:25:40AM -0800, S
Hello,
On Wed, Nov 29, 2006 at 01:09:44PM -0800, Andrew Morton wrote:
> On Wed, 29 Nov 2006 17:09:39 +
> Christoph Hellwig <[EMAIL PROTECTED]> wrote:
>
> > On Wed, Nov 29, 2006 at 08:25:40AM -0800, Stephane Eranian wrote:
> > > Hello,
> > >
> > > Here is a patch that adds an idle notifier to
On Wed, 29 Nov 2006 17:09:39 +
Christoph Hellwig <[EMAIL PROTECTED]> wrote:
> On Wed, Nov 29, 2006 at 08:25:40AM -0800, Stephane Eranian wrote:
> > Hello,
> >
> > Here is a patch that adds an idle notifier to the i386 tree.
> > The idle notifier functionalities and implementation are
> > iden
On Wed, Nov 29, 2006 at 08:25:40AM -0800, Stephane Eranian wrote:
> Hello,
>
> Here is a patch that adds an idle notifier to the i386 tree.
> The idle notifier functionalities and implementation are
> identical to the x86_64 idle notifier. We use the idle notifier
> in the context of perfmon.
>
>
Hello,
[This is the second take due to stray '}' in the patch. Sorry about that]
Here is a patch that adds an idle notifier to the i386 tree.
The idle notifier functionalities and implementation are
identical to the x86_64 idle notifier. We use the idle notifier
in the context of perfmon.
The pa
On Wednesday 29 November 2006 17:25, Stephane Eranian wrote:
> Hello,
>
> Here is a patch that adds an idle notifier to the i386 tree.
> The idle notifier functionalities and implementation are
> identical to the x86_64 idle notifier. We use the idle notifier
> in the context of perfmon.
>
> The
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