Hi Vineet,
Our stress testing campaign has just successfully completed on this
patch. It seems to solve several issues we have seen in unpatched
versions, amongst others the original timer issue, a crash in hrtimer
rb-tree manipulation etc.
Greetings,
Christian
On Wed, Apr 03, 2013 at 07:41:22PM +0530, Vineet Gupta wrote:
> spinlocks built in a !PREEMPT_COUNT config don't have the compiler
> barrier provided by preempt_* routines. This can break lot of code which
> relies on barrier semantics.
>
> This manifested as random crashes in timer code when stress testing
> ARC Linux (3.9-rc3): !SMP && !PREEMPT_COUNT
>
> [...]
>
> Signed-off-by: Vineet Gupta <vgu...@synopsys.com>
> Reported-by: Christian Ruppert <christian.rupp...@abilis.com>
Tested-by: Christian Ruppert <christian.rupp...@abilis.com>
> Cc: Thomas Gleixner <t...@linutronix.de>
> Cc: Christian Ruppert <christian.rupp...@abilis.com>
> Cc: Pierrick Hascoet <pierrick.hasc...@abilis.com>
> Cc: Robert Love <r...@tech9.net>
> Cc: kpreempt-t...@lists.sourceforge.net
> Cc: Frederic Weisbecker <fweis...@gmail.com>
> Cc: Steven Rostedt <srost...@redhat.com>
> Cc: Peter Zijlstra <pet...@infradead.org>
> Cc: Ingo Molnar <mi...@kernel.org>
> Cc: linux-kernel@vger.kernel.org
> [...]
--
Christian Ruppert , <christian.rupp...@abilis.com>
/|
Tel: +41/(0)22 816 19-42 //| 3, Chemin du Pré-Fleuri
_// | bilis Systems CH-1228 Plan-les-Ouates
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