[PATCH v2 12/34] bit_spinlock: Include missing

Marco Elver
2025-03-04T09:25:43Z

Including <linux/bit_spinlock.h> into an empty TU will result in the
compiler complaining:

./include/linux/bit_spinlock.h:34:4: error: call to undeclared function 'cpu_relax'; <...>
34 | cpu_relax();
| ^
1 error generated.

Include <asm/processor.h> to allow including bit_spinlock.h where
<asm/processor.h> is not otherwise included.

Signed-off-by: Marco Elver <elver@google.com>
---
include/linux/bit_spinlock.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h
index bbc4730a6505..f1174a2fcc4d 100644
--- a/include/linux/bit_spinlock.h
+++ b/include/linux/bit_spinlock.h
@@ -7,6 +7,8 @@
#include <linux/atomic.h>
#include <linux/bug.h>

+#include <asm/processor.h> /* for cpu_relax() */
+
/*
* bit-based spin_lock()
*