Hello Vineet,
In the following a patch for a seemingly unrelated problem (RB-trees in
hrtimer implementation) which seems to fix the original problem at the
same time. For the moment, this patch is insufficiently tested but I am
posting it here (preliminarily) since it seems to be in line with
Tho
Vineet,
On Fri, 29 Mar 2013, Vineet Gupta wrote:
> When stress testing ARC Linux from 3.9-rc3, we've hit a serialization
> issue when mod_timer() races with itself. This is on a FPGA board and
> kernel .config among others has !SMP and !PREEMPT_COUNT.
>
> The issue happens in mod_timer( ) becaus
We have tested the patch in several configurations and boards using
tests which previously crashed the kernel in less than an hour. The
crashes in question could not be reproduced in long term tests (3 days)
and nightly tests with the patch. I can thus confirm that this fixes a
real issue.
On Fri,
Hi Thomas,
Did you get a chance to look at this one !
It fixes a real problem for ARC platform - w/o it my stress test setup buckles
up
in ~20 mins.
Thx,
-Vineet
On 03/29/2013 04:03 PM, Vineet Gupta wrote:
> When stress testing ARC Linux from 3.9-rc3, we've hit a serialization
> issue when mod_
When stress testing ARC Linux from 3.9-rc3, we've hit a serialization
issue when mod_timer() races with itself. This is on a FPGA board and
kernel .config among others has !SMP and !PREEMPT_COUNT.
The issue happens in mod_timer( ) because timer_pending( ) based early
exit check is NOT done inside
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