On Sun, Apr 21, 2013 at 01:06:27PM -0500, Jacob Shin wrote:
> From 2ac60428e58f7bfd7dec4baa772f523eeedfecc6 Mon Sep 17 00:00:00 2001
> From: Jacob Shin <jacob.shin@xxxxxxx>
> Date: Sun, 21 Apr 2013 12:58:21 -0500
> Subject: [PATCH 1/1] perf, amd: fix lockdep warning, don't __GFP_FS alloc
> with IRQs disabled
>
> Fix lockdep warning by not calling kzalloc in smp_call_function_single.
This should say something about "do not allocate memory in the
IRQ handler or so." And I think the flag is __GFP_WAIT. Look at
allocate_slab() in slub.c:
if (flags & __GFP_WAIT)
local_irq_enable();
The local_irq_enable() calls into lockdep with trace_hardirqs_on().
Other than that:
Tested-by: Borislav Petkov <bp@xxxxxxx>
Thanks.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
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