From: John Keeping <john@xxxxxxxxxxxx>
If the compiler decides not to inline this function then preemption
tracing will always show an IP inside the preemption disabling path and
never the function actually calling preempt_{enable,disable}.
Link: https://lore.kernel.org/linux-trace-kernel/20230327173647.1690849-1-john@xxxxxxxxxxxx
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Fixes: f904f58263e1d ("sched/debug: Fix preempt_disable_ip recording for preempt_disable()")
Signed-off-by: John Keeping <john@xxxxxxxxxxxx>
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
include/linux/ftrace.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 366c730beaa3..402fc061de75 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -980,7 +980,7 @@ static inline void __ftrace_enabled_restore(int enabled)
#define CALLER_ADDR5 ((unsigned long)ftrace_return_address(5))
#define CALLER_ADDR6 ((unsigned long)ftrace_return_address(6))
-static inline unsigned long get_lock_parent_ip(void)
+static __always_inline unsigned long get_lock_parent_ip(void)
{
unsigned long addr = CALLER_ADDR0;
--
2.39.2
