Re: [PATCH 1/1] MM: slqb, fix per_cpu access

From: Tejun Heo
Date: Mon Nov 02 2009 - 10:25:29 EST

2009ë 11ì 02ì 17:49, Jiri Slaby wrote:
> We cannot use the same local variable name as the declared per_cpu
> variable since commit "percpu: remove per_cpu__ prefix."
> Otherwise we would see crashes like:
> general protection fault: 0000 [#1] SMP
> last sysfs file:
> CPU 1
> Modules linked in:
> Pid: 1, comm: swapper Tainted: G W 2.6.32-rc5-mm1_64 #860
> RIP: 0010:[<ffffffff8142ff94>] [<ffffffff8142ff94>] start_cpu_timer+0x2b/0x87
> ...
> Use slqb_ prefix for the global variable so that we don't collide
> even with the rest of the kernel (s390 and alpha need this).
> Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>
> Cc: Nick Piggin <npiggin@xxxxxxx>
> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
> Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>


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