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linux/seqlock.h should #include asm/processor.h for cpu_relax()

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It uses cpu_relax(), and so needs <asm/processor.h>

Without this patch, I see:

   CC      arch/mn10300/kernel/asm-offsets.s
  In file included from include/linux/time.h:8,
                   from include/linux/timex.h:56,
                   from include/linux/sched.h:57,
                   from arch/mn10300/kernel/asm-offsets.c:7:
  include/linux/seqlock.h: In function 'read_seqbegin':
  include/linux/seqlock.h:91: error: implicit declaration of function 'cpu_relax'

whilst building asb2364_defconfig on MN10300.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2011-06-11 12:29:58 +01:00 committed by Linus Torvalds
parent 45694c2895
commit 56a210526a
1 changed files with 1 additions and 0 deletions
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include/linux/seqlock.h
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@ -28,6 +28,7 @@
#include <linux/spinlock.h>
#include <linux/preempt.h>
#include <asm/processor.h>
typedef struct {
unsigned sequence;