Re: [Kgdb-bugreport] [PATCH 4/5] kgdb: Use atomic operators whichuse barriers
Status: Beta
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jwessel
From: Linus T. <tor...@li...> - 2010-04-02 19:51:37
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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. Except: > From: Jason Wessel <jas...@wi...> > 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. Linus |