From: Shan Wei <shanwei88@gmail.com>
To: rostedt@goodmis.org, fweisbec@gmail.com
Cc: Shan Wei <shanwei88@gmail.com>,
Kernel-Maillist <linux-kernel@vger.kernel.org>,
mingo@redhat.com, cl@linux-foundation.org,
Tejun Heo <htejun@gmail.com>
Subject: Re: [PATCH v4 7/9] trace: use this_cpu_ptr per-cpu helper
Date: Fri, 30 Nov 2012 14:38:14 +0800 [thread overview]
Message-ID: <50B85456.9040807@gmail.com> (raw)
In-Reply-To: <50A5FA84.8080106@gmail.com>
Shan Wei said, at 2012/11/16 16:34:
> Shan Wei said, at 2012/11/13 9:53:
>> From: Shan Wei <davidshan@tencent.com>
>>
>> typeof(&buffer) is a pointer to array of 1024 char, or char (*)[1024].
>> But, typeof(&buffer[0]) is a pointer to char which match the return type of get_trace_buf().
>> As well-known, the value of &buffer is equal to &buffer[0].
>> so return this_cpu_ptr(&percpu_buffer->buffer[0]) can avoid type cast.
>>
>> Signed-off-by: Shan Wei <davidshan@tencent.com>
>
> Steven Rostedt, would you like to pick it up to your tree?
ping......................
next prev parent reply other threads:[~2012-11-30 6:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-13 1:53 [PATCH v4 7/9] trace: use this_cpu_ptr per-cpu helper Shan Wei
2012-11-16 8:34 ` Shan Wei
2012-11-30 6:38 ` Shan Wei [this message]
2012-12-08 2:03 ` Steven Rostedt
2013-01-24 19:36 ` [tip:perf/core] tracing: Use " tip-bot for Shan Wei
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