Re: [Kgdb-bugreport] [PATCH 4/5] kgdb: Use atomic operators whichusebarriers
From: Linus Torvalds
Date: Fri Apr 02 2010 - 15:51:47 EST
On Fri, 2 Apr 2010, Jason Wessel wrote:
> Here is the revised patch, which is going into the kgdb-fixes branch.
Yeah, this patch I have no issues with.
> From: Jason Wessel <jason.wessel@xxxxxxxxxxxxx>
> Subject: [PATCH] kgdb: Use atomic operators which use barriers
> The cpu_relax() does not mandate that there is an smp memory barrier.
> As a result on the arm smp architecture the kernel debugger can hang
> on entry from time to time, as shown by the kgdb regression tests.
Now your changelog makes no sense any more.
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