fix REQ-2, REQ-6, REQ-8

2016-02-23 16:32:17 +09:00
parent ebce1cb031
commit 863a5c5e5f
10 changed files with 99 additions and 74 deletions
--- a/arch/x86/kernel/include/arch/cpu.h
+++ b/arch/x86/kernel/include/arch/cpu.h
@@ -25,4 +25,13 @@ static inline void wmb(void)
 	barrier();
 }

+static unsigned long read_tsc(void)
+{
+	unsigned int low, high;
+
+	asm volatile("rdtsc" : "=a"(low), "=d"(high));
+
+	return (low | ((unsigned long)high << 32));
+}
+
 #endif /* ARCH_CPU_H */