From: Dave Martin dave.martin@linaro.org
This patch exports a bL_switcher_trace_trigger() function to provide a means for drivers using the trace events to get the current status when starting a trace session.
Calling this function is equivalent to pinging the trace_trigger file in sysfs.
Signed-off-by: Dave Martin dave.martin@linaro.org --- arch/arm/common/bL_switcher.c | 3 ++- arch/arm/include/asm/bL_switcher.h | 3 +++ 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c index f0dc025077..f4878a3604 100644 --- a/arch/arm/common/bL_switcher.c +++ b/arch/arm/common/bL_switcher.c @@ -537,7 +537,7 @@ static void bL_switcher_trace_trigger_cpu(void *__always_unused info) trace_cpu_migrate_current(get_ns(), read_mpidr()); }
-static int bL_switcher_trace_trigger(void) +int bL_switcher_trace_trigger(void) { int ret;
@@ -550,6 +550,7 @@ static int bL_switcher_trace_trigger(void)
return ret; } +EXPORT_SYMBOL_GPL(bL_switcher_trace_trigger);
static int bL_switcher_enable(void) { diff --git a/arch/arm/include/asm/bL_switcher.h b/arch/arm/include/asm/bL_switcher.h index 7d1cce8b8a..8ada5a885c 100644 --- a/arch/arm/include/asm/bL_switcher.h +++ b/arch/arm/include/asm/bL_switcher.h @@ -54,6 +54,8 @@ int bL_switcher_unregister_notifier(struct notifier_block *nb); bool bL_switcher_get_enabled(void); void bL_switcher_put_enabled(void);
+int bL_switcher_trace_trigger(void); + #else static inline int bL_switcher_register_notifier(struct notifier_block *nb) { @@ -67,6 +69,7 @@ static inline int bL_switcher_unregister_notifier(struct notifier_block *nb)
static inline bool bL_switcher_get_enabled(void) { return false; } static inline void bL_switcher_put_enabled(void) { } +static inline int bL_switcher_trace_trigger(void) { return 0; } #endif /* CONFIG_BL_SWITCHER */
#endif