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Diffstat (limited to 'include/linux/preempt.h')
-rw-r--r--include/linux/preempt.h25
1 files changed, 19 insertions, 6 deletions
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index f5d4723cdb3d..eaac52a8fe6a 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -10,19 +10,32 @@
#include <linux/linkage.h>
#include <linux/list.h>
+static __always_inline int preempt_count(void)
+{
+ return current_thread_info()->preempt_count;
+}
+
+static __always_inline int *preempt_count_ptr(void)
+{
+ return &current_thread_info()->preempt_count;
+}
+
+static __always_inline void preempt_count_set(int pc)
+{
+ *preempt_count_ptr() = pc;
+}
+
#if defined(CONFIG_DEBUG_PREEMPT) || defined(CONFIG_PREEMPT_TRACER)
extern void add_preempt_count(int val);
extern void sub_preempt_count(int val);
#else
-# define add_preempt_count(val) do { preempt_count() += (val); } while (0)
-# define sub_preempt_count(val) do { preempt_count() -= (val); } while (0)
+# define add_preempt_count(val) do { *preempt_count_ptr() += (val); } while (0)
+# define sub_preempt_count(val) do { *preempt_count_ptr() -= (val); } while (0)
#endif
#define inc_preempt_count() add_preempt_count(1)
#define dec_preempt_count() sub_preempt_count(1)
-#define preempt_count() (current_thread_info()->preempt_count)
-
#ifdef CONFIG_PREEMPT
asmlinkage void preempt_schedule(void);
@@ -81,9 +94,9 @@ do { \
/* For debugging and tracer internals only! */
#define add_preempt_count_notrace(val) \
- do { preempt_count() += (val); } while (0)
+ do { *preempt_count_ptr() += (val); } while (0)
#define sub_preempt_count_notrace(val) \
- do { preempt_count() -= (val); } while (0)
+ do { *preempt_count_ptr() -= (val); } while (0)
#define inc_preempt_count_notrace() add_preempt_count_notrace(1)
#define dec_preempt_count_notrace() sub_preempt_count_notrace(1)