linux-kernel - Re: [PATCH v2 07/12] rbtree: adjust root color in rb_insert

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Message-ID: <CANN689E8u-rx08NMG3JRaay1BdM=VTe6nzE_FfcPSFSShbL=9A@mail.gmail.com>
Date:	Fri, 31 Aug 2012 01:39:48 -0700
From:	Michel Lespinasse <walken@...gle.com>
To:	Adrian Hunter <adrian.hunter@...el.com>
Cc:	"Shishkin, Alexander" <alexander.shishkin@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, acme@...hat.com
Subject: Re: [PATCH v2 07/12] rbtree: adjust root color in rb_insert_color()
 only when necessary

On Fri, Aug 31, 2012 at 1:35 AM, Adrian Hunter <adrian.hunter@...el.com> wrote:
> On 31/08/12 11:15, Andrew Morton wrote:
>> On Fri, 31 Aug 2012 01:07:24 -0700 Michel Lespinasse <walken@...gle.com> wrote:
>>> I thought Andrew had a patch
>>> rbtree-adjust-root-color-in-rb_insert_color-only-when-necessary-fix-perf-compilation
>>> that fixed this though a Makefile change ?
>>
>> Yup.  But it's unclear why we should include the header via the cc
>> command line?
>
> Dunno
>
> AFAICS tools/perf/util/include/linux is for fixing up the
> differences between kernel headers and exported kernel headers.
> Hence my change:
>
> diff --git a/tools/perf/util/include/linux/rbtree.h b/tools/perf/util/include/linux/rbtree.h
> index 7a243a1..2a030c5 100644
> --- a/tools/perf/util/include/linux/rbtree.h
> +++ b/tools/perf/util/include/linux/rbtree.h
> @@ -1 +1,2 @@
> +#include <stdbool.h>
>  #include "../../../../include/linux/rbtree.h"
>
> Alex?

Ah, makes sense to me. I wasn't previously aware of the
tools/perf/util/include/linux directory. I think your fix is fine.
(I don't understand how you hit the issue given the previous Makefile
fix, but I think your fix looks nicer)

-- 
Michel "Walken" Lespinasse
A program is never fully debugged until the last user dies.
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