These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / x86 / include / asm / preempt.h

diff --git a/kernel/arch/x86/include/asm/preempt.h b/kernel/arch/x86/include/asm/preempt.h
index 6ef9a16..5dbd2d0 100644 (file)
--- a/kernel/arch/x86/include/asm/preempt.h
+++ b/kernel/arch/x86/include/asm/preempt.h
@@ -30,12 +30,9 @@ static __always_inline void preempt_count_set(int pc)
 /*
  * must be macros to avoid header recursion hell
  */
-#define init_task_preempt_count(p) do { \
-       task_thread_info(p)->saved_preempt_count = PREEMPT_DISABLED; \
-} while (0)
+#define init_task_preempt_count(p) do { } while (0)
 
 #define init_idle_preempt_count(p, cpu) do { \
-       task_thread_info(p)->saved_preempt_count = PREEMPT_ENABLED; \
        per_cpu(__preempt_count, (cpu)) = PREEMPT_ENABLED; \
 } while (0)
 
@@ -101,13 +98,13 @@ static __always_inline bool __preempt_count_dec_and_test(void)
 /*
  * Returns true when we need to resched and can (barring IRQ state).
  */
-static __always_inline bool should_resched(void)
+static __always_inline bool should_resched(int preempt_offset)
 {
 #ifdef CONFIG_PREEMPT_LAZY
-       return unlikely(!raw_cpu_read_4(__preempt_count) || \
+       return unlikely(raw_cpu_read_4(__preempt_count) == preempt_offset ||
                        test_thread_flag(TIF_NEED_RESCHED_LAZY));
 #else
-       return unlikely(!raw_cpu_read_4(__preempt_count));
+       return unlikely(raw_cpu_read_4(__preempt_count) == preempt_offset);
 #endif
 }
 
@@ -115,11 +112,9 @@ static __always_inline bool should_resched(void)
   extern asmlinkage void ___preempt_schedule(void);
 # define __preempt_schedule() asm ("call ___preempt_schedule")
   extern asmlinkage void preempt_schedule(void);
-# ifdef CONFIG_CONTEXT_TRACKING
-    extern asmlinkage void ___preempt_schedule_context(void);
-#   define __preempt_schedule_context() asm ("call ___preempt_schedule_context")
-    extern asmlinkage void preempt_schedule_context(void);
-# endif
+  extern asmlinkage void ___preempt_schedule_notrace(void);
+# define __preempt_schedule_notrace() asm ("call ___preempt_schedule_notrace")
+  extern asmlinkage void preempt_schedule_notrace(void);
 #endif
 
 #endif /* __ASM_PREEMPT_H */