kernel: Reduce lock contention when processing ICIs

2013-11-29 03:36:44 +01:00
parent e736a456ba
commit 3514fd77f7
3 changed files with 105 additions and 92 deletions
@@ -497,7 +497,7 @@ arch_cpu_idle(void)
 static inline void
 arch_cpu_pause(void)
 {
-	asm volatile("pause");
+	asm volatile("pause" : : : "memory");
 }


@@ -60,6 +60,8 @@ typedef struct cpu_ent {
 	bigtime_t		last_kernel_time;
 	bigtime_t		last_user_time;

+	int32			ici_counter;
+
 	// used in the kernel debugger
 	addr_t			fault_handler;
 	addr_t			fault_handler_stack_pointer;