From: Randy Dunlap <rdunlap@xenotime.net>
To: Cong Wang <amwang@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
gregkh@suse.de, linux-next@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, akpm <akpm@linux-foundation.org>
Subject: Re: [PATCH -next] drivers/base/inode.c: let vmstat_text be optional
Date: Thu, 04 Aug 2011 22:43:25 -0700 [thread overview]
Message-ID: <4E3B82FD.1040500@xenotime.net> (raw)
In-Reply-To: <4E3B57C3.80203@redhat.com>
On 08/04/11 19:38, Cong Wang wrote:
> ao? 2011a1'08ae??05ae?JPY 06:22, Randy Dunlap a??e??:
>> From: Randy Dunlap<rdunlap@xenotime.net>
>>
>> vmstat_text is only available when PROC_FS or SYSFS is enabled.
>> This causes build errors in drivers/base/node.c when they are
>> both disabled:
>>
>> drivers/built-in.o: In function `node_read_vmstat':
>> node.c:(.text+0x10e28f): undefined reference to `vmstat_text'
>>
>> Rather than litter drivers/base/node.c with #ifdef/#endif around
>> the affected lines of code, add macros for optional sysdev
>> attributes so that those lines of code will be ignored, without
>> using #ifdef/#endif in the .c file(s). I.e., the ifdeffery
>> is done only in a header file with sysdev_create_file_optional()
>> and sysdev_remove_file_optional().
>>
>
> This looks ugly for me, because other sysfs files here are not optional
> only due to that they don't rely on vmstat_text.
>
> I still think my approach to fix this is better, that is, introducing
> a new Kconfig for drivers/base/node.c which depends on CONFIG_SYSFS.
Did you post a patch for that? I must have missed it.
thanks,
--
~Randy
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next prev parent reply other threads:[~2011-08-05 5:43 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20110804145834.3b1d92a9eeb8357deb84bf83@canb.auug.org.au>
2011-08-04 22:22 ` [PATCH -next] drivers/base/inode.c: let vmstat_text be optional Randy Dunlap
2011-08-05 2:38 ` Cong Wang
2011-08-05 5:43 ` Randy Dunlap [this message]
2011-08-05 8:02 ` Cong Wang
2011-08-23 21:39 ` Andrew Morton
2011-08-24 3:34 ` [Patch] numa: introduce CONFIG_NUMA_SYSFS for drivers/base/node.c Cong Wang
2011-08-25 2:14 ` Randy Dunlap
2011-08-25 3:31 ` Cong Wang
2011-08-25 3:50 ` Randy Dunlap
2011-08-25 5:04 ` David Rientjes
2011-08-25 10:22 ` Cong Wang
2011-08-25 20:57 ` David Rientjes
2011-08-29 2:29 ` Cong Wang
2011-08-25 5:55 ` [patch] numa: fix NUMA compile error when sysfs and procfs are disabled David Rientjes
2011-08-25 17:17 ` Randy Dunlap
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