linux/seqlock.h should #include asm/processor.h for cpu_relax()
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>
diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index e981189..c6db9fb 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -28,6 +28,7 @@
#include <linux/spinlock.h>
#include <linux/preempt.h>
+#include <asm/processor.h>
typedef struct {
unsigned sequence;