[lkml]   [2006]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] i386 add idle notifier
On Wed, 29 Nov 2006 17:09:39 +0000
Christoph Hellwig <> 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
> > identical to the x86_64 idle notifier. We use the idle notifier
> > in the context of perfmon.
> >
> > The patch is against Andi Kleen's x86_64-2.6.19-rc6-061128-1.bz2
> > kernel. It may apply to other kernels but it needs some updates
> > to poll_idle() and default_idle() to work correctly.
> Walking through a notifier chain on every single interrupt (including
> timer interrupts) seems rather costly. What do you need this for
> exactly?

yes, it's a worry.

Why doesn't enter_idle() do the test_and_set_bit() thing, like
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-11-29 22:17    [W:0.047 / U:1.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site