On Sun, 1 Apr 2007 20:14:40 +0200 (MEST) Jan Engelhardt <[EMAIL PROTECTED]> wrote:
> Fix kevent's childs priority greedy-ness. Such tasks were always scheduled > at nice level -5 and, at that time, udev stole us the CPU time with -5. > > Already posted at http://lkml.org/lkml/2005/1/10/85 > > Signed-off-by: Jan Engelhardt <[EMAIL PROTECTED]> > Cc: Chris Wright <[EMAIL PROTECTED]> > > kmod.c | 1 + > 1 file changed, 1 insertion(+) > > Index: linux-2.6.21-rc5/kernel/kmod.c > =================================================================== > --- linux-2.6.21-rc5.orig/kernel/kmod.c > +++ linux-2.6.21-rc5/kernel/kmod.c > @@ -165,6 +165,7 @@ static int ____call_usermodehelper(void > > /* We can run anywhere, unlike our parent keventd(). */ > set_cpus_allowed(current, CPU_MASK_ALL); > + set_user_nice(current, 0); > > retval = -EPERM; > if (current->fs->root) > #<EOF> -ETOOOBSCURE. --- a/kernel/kmod.c~fix-kthread-nicenessdiff-fix +++ a/kernel/kmod.c @@ -163,6 +163,11 @@ static int ____call_usermodehelper(void /* We can run anywhere, unlike our parent keventd(). */ set_cpus_allowed(current, CPU_MASK_ALL); + + /* + * Our parent is keventd, which runs with elevated scheduling priority. + * Avoid propagating that into the userspace child. + */ set_user_nice(current, 0); retval = -EPERM; _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
