From: Arnd Bergmann <a...@arndb.de> The definition was previously moved into an #ifdef block by accident and now causes a build failure when CONFIG_TIMERLAT_TRACER is disabled:
In file included from include/linux/seqlock.h:19, from kernel/trace/trace_osnoise.c:20: kernel/trace/trace_osnoise.c: In function 'osnoise_sleep': kernel/trace/trace_osnoise.c:1631:21: error: 'interface_lock' undeclared (first use in this function); did you mean 'trace_clock'? 1631 | mutex_lock(&interface_lock); | ^~~~~~~~~~~~~~ Move it up some more to be outside of that #ifdef again. Fixes: e6a53481da29 ("tracing/timerlat: Only clear timer if a kthread exists") Signed-off-by: Arnd Bergmann <a...@arndb.de> --- It looks like the regression already made it into 6.11-rc7 as part of https://lore.kernel.org/lkml/20240905172827.6a64c...@gandalf.local.home/ so this fixup (if correct) is needed for 6.11 as well --- kernel/trace/trace_osnoise.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c index 20c6660762a3..acfd57689af6 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -228,6 +228,11 @@ static inline struct osnoise_variables *this_cpu_osn_var(void) return this_cpu_ptr(&per_cpu_osnoise_var); } +/* + * Protect the interface. + */ +static struct mutex interface_lock; + #ifdef CONFIG_TIMERLAT_TRACER /* * Runtime information for the timer mode. @@ -252,11 +257,6 @@ static inline struct timerlat_variables *this_cpu_tmr_var(void) return this_cpu_ptr(&per_cpu_timerlat_var); } -/* - * Protect the interface. - */ -static struct mutex interface_lock; - /* * tlat_var_reset - Reset the values of the given timerlat_variables */ -- 2.39.2