linux-kernel - Re: [PATCH 7/8] percpu: add __percpu sparse annotations to hw

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Message-ID: <4B5E54C0.2040709@kernel.org>
Date:	Tue, 26 Jan 2010 11:34:40 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	linux-kernel@...r.kernel.org, axboe@...nel.dk,
	rusty@...tcorp.com.au, akpm@...ux-foundation.org,
	ebiederm@...ssion.com, tytso@....edu, Trond.Myklebust@...app.com,
	aelder@....com, hch@...radead.org, viro@...iv.linux.org.uk,
	davem@...emloft.net, netdev@...r.kernel.org, x86@...nel.org,
	mingo@...hat.com, dan.j.williams@...el.com,
	borislav.petkov@....com, ying.huang@...el.com, lenb@...nel.org,
	neilb@...e.de, cl@...ux-foundation.org
Subject: Re: [PATCH 7/8] percpu: add __percpu sparse annotations to	hw_breakpoint

On 01/26/2010 11:22 AM, Frederic Weisbecker wrote:
>> What about this? It doesn't use direct cast to scalar but should
>> create a pointer type to kernel space datas:
>>
>>
>> #define kernel_space_t(var)	\
>> 	(typeof(var)	__kernel __force)
> 
> 
> Should be typeof(*var)
> 
>>
>> #define SHIFT_PERCPU_PTR(__p, __offset) ({                              \
>>         __verify_pcpu_ptr((__p));                                       \
>>         RELOC_HIDE((typeof(*(kernel_space_t(var)) __kernel __force *)(__p), (__offset)); \
>> })

Can you balance ()'s here too?

-- 
tejun
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