linux-kernel - Re: [PATCH v4 7/9] trace: use this_cpu

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Message-ID: <50B85456.9040807@gmail.com>
Date:	Fri, 30 Nov 2012 14:38:14 +0800
From:	Shan Wei <shanwei88@...il.com>
To:	rostedt@...dmis.org, fweisbec@...il.com
CC:	Shan Wei <shanwei88@...il.com>,
	Kernel-Maillist <linux-kernel@...r.kernel.org>, mingo@...hat.com,
	cl@...ux-foundation.org, Tejun Heo <htejun@...il.com>
Subject: Re: [PATCH v4 7/9] trace: use this_cpu_ptr per-cpu helper

Shan Wei said, at 2012/11/16 16:34:
> Shan Wei said, at 2012/11/13 9:53:
>> From: Shan Wei <davidshan@...cent.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@...cent.com>
> 
> Steven Rostedt,  would you like to pick it up to your tree?

ping......................

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