tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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>

authored by

David Howells and committed by
Linus Torvalds 56a21052 45694c28

+1
+1
include/linux/seqlock.h
··· 28 28 29 29 #include <linux/spinlock.h> 30 30 #include <linux/preempt.h> 31 + #include <asm/processor.h> 31 32 32 33 typedef struct { 33 34 unsigned sequence;