[lkml]   [2003]   [Dec]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [DOCUMENTATION] Revised Unreliable Kernel Locking Guide
On Fri, 12 Dec 2003 18:25:56 +0000, 
Dave Jones <> wrote:
>On Sat, Dec 13, 2003 at 03:25:52AM +1100, Keith Owens wrote:
> > Also calls to smp_call_function() need to be wrapped in preempt_disable,
> > plus any work that is done on the current cpu before/after calling a
> > function on the other cpus. Lack of preempt disable could result in
> > the operation being done twice on one cpu and not at all on another.
>And where you want to do the same thing on every processor, there's a
>handy on_each_cpu() which takes care of this for you.

I know, but there is code in 2.6 that calls smp_call_function directly,
without preempt disable around it.

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: 2005-03-22 13:59    [W:0.035 / U:2.216 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site