linux-kernel - 2.6.27-rc3-git4: Multiple implicit declarations in log2.h

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Date:	Sun, 17 Aug 2008 19:32:20 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: 2.6.27-rc3-git4: Multiple implicit declarations in log2.h

Hi,

I see this compiling the current mainline on x86-64:

  AS      arch/x86/boot/compressed/head_64.o
In file included from /home/rafael/src/linux-2.6/include/linux/kernel.h:16,
                 from /home/rafael/src/linux-2.6/arch/x86/boot/memory.c:16:
/home/rafael/src/linux-2.6/include/linux/log2.h: In function ‘__ilog2_u32’:
/home/rafael/src/linux-2.6/include/linux/log2.h:34: warning: implicit declaration of function ‘fls’
/home/rafael/src/linux-2.6/include/linux/log2.h: In function ‘__ilog2_u64’:
/home/rafael/src/linux-2.6/include/linux/log2.h:42: warning: implicit declaration of function ‘fls64’
/home/rafael/src/linux-2.6/include/linux/log2.h: In function ‘__roundup_pow_of_two’:
/home/rafael/src/linux-2.6/include/linux/log2.h:63: warning: implicit declaration of function ‘fls_long’
  CC      arch/x86/boot/compressed/misc.o

I guess there's a missing #include or something?

Rafael
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