On Wed, Jul 12, 2006 at 10:26:39PM +0200, Ingo Molnar wrote:
> Subject: lockdep: core, fix rq-lock handling on __ARCH_WANT_UNLOCKED_CTXSW
> From: Ingo Molnar <[email protected]>
>
> on platforms that have __ARCH_WANT_UNLOCKED_CTXSW set and want to
> implement lock validator support there's a bug in rq->lock handling: in
> this case we dont 'carry over' the runqueue lock into another task - but
> still we did a spinlock_release() of it. Fix this by making the
> spinlock_release() in context_switch() dependent on
> !__ARCH_WANT_UNLOCKED_CTXSW.
>
> (Reported by Ralf Baechle on MIPS, which has __ARCH_WANT_UNLOCKED_CTXSW.
> This fixes a lockdep-internal BUG message on such platforms.)
>
> Signed-off-by: Ingo Molnar <[email protected]>
Tested and works as advertised for me,
Ralf
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
