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ftrace: Mark get_lock_parent_ip() __always_inline

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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@metanate.com

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: stable@vger.kernel.org
Fixes: f904f58263 ("sched/debug: Fix preempt_disable_ip recording for preempt_disable()")
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
John Keeping 2023-03-27 18:36:46 +01:00 committed by Steven Rostedt (Google)
parent 6455b6163d
commit ea65b41807
1 changed files with 1 additions and 1 deletions
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2
include/linux/ftrace.h
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@ -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;