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Subject[PATCH] ftrace: fix debug config symbol in stack_tracer_{en,dis}able
Date
Hello,

It appears stack_tracer_disable()/stack_tracer_enable() have been
using the wrong name for the config symbol to enable their
preempt-debugging checks, which the patch below should fix. (Noticed
when I made the same mistake attempting to grep for
CONFIG_DEBUG_PREEMPT and got two results instead of zero).


Zev Weiss

---
include/linux/ftrace.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 6383115e9d2c..2e028854bac7 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -307,7 +307,7 @@ DECLARE_PER_CPU(int, disable_stack_tracer);
static inline void stack_tracer_disable(void)
{
/* Preemption or interupts must be disabled */
- if (IS_ENABLED(CONFIG_PREEMPT_DEBUG))
+ if (IS_ENABLED(CONFIG_DEBUG_PREEMPT))
WARN_ON_ONCE(!preempt_count() || !irqs_disabled());
this_cpu_inc(disable_stack_tracer);
}
@@ -320,7 +320,7 @@ static inline void stack_tracer_disable(void)
*/
static inline void stack_tracer_enable(void)
{
- if (IS_ENABLED(CONFIG_PREEMPT_DEBUG))
+ if (IS_ENABLED(CONFIG_DEBUG_PREEMPT))
WARN_ON_ONCE(!preempt_count() || !irqs_disabled());
this_cpu_dec(disable_stack_tracer);
}
--
2.14.1
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