linux-kernel - Re: [RFC PATCH v4 01/29] tools: Add __aligned

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Message-ID: <20150528003112.GE24859@kernel.org>
Date:	Wed, 27 May 2015 21:31:12 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	"Wangnan (F)" <wangnan0@...wei.com>
Cc:	paulus@...ba.org, a.p.zijlstra@...llo.nl, mingo@...hat.com,
	namhyung@...nel.org, jolsa@...nel.org, dsahern@...il.com,
	daniel@...earbox.net, brendan.d.gregg@...il.com,
	masami.hiramatsu.pt@...achi.com, lizefan@...wei.com,
	linux-kernel@...r.kernel.org, pi3orama@....com
Subject: Re: [RFC PATCH v4 01/29] tools: Add __aligned_u64 to types.h

Em Thu, May 28, 2015 at 08:28:07AM +0800, Wangnan (F) escreveu:
> 
> 
> On 2015/5/27 21:00, Arnaldo Carvalho de Melo wrote:
> >Em Wed, May 27, 2015 at 05:19:36AM +0000, Wang Nan escreveu:
> >>Following patches will introduce linux/bpf.h to a new libbpf library,
> >>which requires definition of __aligned_u64. This patch add it to the
> >>common types.h for tools.
> >This was already merged, see:
> >
> >http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/log/tools?h=perf/core
> >
> >More specifically:
> >
> >http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/tools?h=perf/core&id=70ba6b8f975bcff56e180e2c7550d2302fcbf923
> >
> >So you can drop it from your patchset.
> >
> >BTW, where are you basing your work?
> >
> >If you do it over tip/perf/core you may find some of the trivial stuff
> >being added there, like this one.
> >- Arnaldo
 
> I base my work on v4.1-rc3. I tried tip/perf/core but there are
> confliction and some trival problems (patch 'perf probe: Load map
> before glob matching' is found during rebasing), and that branch
> changes quicker than mainline. If you and others are satisfied with
> the basic idea of v4, I'd like to rebase v5 on tip/perf/core.


I'll try to take a hard look at it tomorrow and will let you know.

- Arnaldo
 
> Thank you.
> 
> >>Signed-off-by: Wang Nan <wangnan0@...wei.com>
> >>---
> >>  tools/include/linux/types.h | 5 +++++
> >>  1 file changed, 5 insertions(+)
> >>
> >>diff --git a/tools/include/linux/types.h b/tools/include/linux/types.h
> >>index b5cf25e..10a2cdc 100644
> >>--- a/tools/include/linux/types.h
> >>+++ b/tools/include/linux/types.h
> >>@@ -60,6 +60,11 @@ typedef __u32 __bitwise __be32;
> >>  typedef __u64 __bitwise __le64;
> >>  typedef __u64 __bitwise __be64;
> >>+/* Taken from uapi/linux/types.h. Required by linux/bpf.h */
> >>+#ifndef __aligned_u64
> >>+# define __aligned_u64 __u64 __attribute__((aligned(8)))
> >>+#endif
> >>+
> >>  struct list_head {
> >>  	struct list_head *next, *prev;
> >>  };
> >>-- 
> >>1.8.3.4
> 
> 
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