diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/preempt.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/linux/preempt.h b/include/linux/preempt.h index 23f0c54175cd..36b03d50bf40 100644 --- a/include/linux/preempt.h +++ b/include/linux/preempt.h @@ -52,6 +52,34 @@ do { \ preempt_check_resched(); \ } while (0) +/* For debugging and tracer internals only! */ +#define add_preempt_count_notrace(val) \ + do { preempt_count() += (val); } while (0) +#define sub_preempt_count_notrace(val) \ + do { preempt_count() -= (val); } while (0) +#define inc_preempt_count_notrace() add_preempt_count_notrace(1) +#define dec_preempt_count_notrace() sub_preempt_count_notrace(1) + +#define preempt_disable_notrace() \ +do { \ + inc_preempt_count_notrace(); \ + barrier(); \ +} while (0) + +#define preempt_enable_no_resched_notrace() \ +do { \ + barrier(); \ + dec_preempt_count_notrace(); \ +} while (0) + +/* preempt_check_resched is OK to trace */ +#define preempt_enable_notrace() \ +do { \ + preempt_enable_no_resched_notrace(); \ + barrier(); \ + preempt_check_resched(); \ +} while (0) + #else #define preempt_disable() do { } while (0) @@ -59,6 +87,10 @@ do { \ #define preempt_enable() do { } while (0) #define preempt_check_resched() do { } while (0) +#define preempt_disable_notrace() do { } while (0) +#define preempt_enable_no_resched_notrace() do { } while (0) +#define preempt_enable_notrace() do { } while (0) + #endif #ifdef CONFIG_PREEMPT_NOTIFIERS |
