spinlock_up.h: include asm/processor.h in for cpu_relax
Commit e66eed651fd1 ("list: remove prefetching from regular list
iterators") removed the include of prefetch.h from list.h and this was a
path to including asm/processor.h. We need to include it excplicitly
now.
Fixes this build error on sparc32 (at least):
In file included from include/linux/seqlock.h:29,
from include/linux/time.h:8,
from include/linux/timex.h:56,
from include/linux/sched.h:57,
from arch/sparc/kernel/asm-offsets.c:13:
include/linux/spinlock.h: In function 'spin_unlock_wait':
include/linux/spinlock.h:360: error: implicit declaration of function 'cpu_relax
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/spinlock_up.h b/include/linux/spinlock_up.h
index b14f6a9..a26e2fb 100644
--- a/include/linux/spinlock_up.h
+++ b/include/linux/spinlock_up.h
@@ -5,6 +5,8 @@
# error "please don't include this file directly"
#endif
+#include <asm/processor.h> /* for cpu_relax() */
+
/*
* include/linux/spinlock_up.h - UP-debug version of spinlocks.
*