[lkml]   [2003]   [Aug]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Race condition in 2.4 tasklet handling (cli() broken?)
On Sat, 23 Aug 2003 14:26:34 +0900
TeJun Huh <> wrote:

> Oops, Sorry. Only bh handling is relevant. Softirq and tasklet are
> not of concern to cli().
> On Sat, Aug 23, 2003 at 01:09:31PM +0900, TeJun Huh wrote:
> > Additional suspicious things.
> >
> > 1. tasklet_kill() has similar race condition. mb() required before
> > tasklet_unlock_wait().
> Corrected 2.
> [...]
> If bh hanlding is not guaranteed to be blocked during cli() - sti()
> critical section, global_bh_lock test inside wait_on_irq() is
> redundant and if it should be guaranteed, current implmentation seems
> broken.

If we follow your analysis and say it is broken, do you have a suggestion/patch
how to fix both? I am willing to try your proposals, as it seems I am one of
very few who really experience stability issues on SMP with the current

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 13:48    [W:0.094 / U:1.584 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site