Merge branch 'tracing/ftrace' into tracing/core

ce181ebe · Ingo Molnar · 4a66a82b · 89025282 · ce181ebe
隐藏空白更改
内联并排

Showing with 5 addition and 6 deletion

arch/x86/kernel/ftrace.c arch/x86/kernel/ftrace.c +5 -6

未找到文件。
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -133,15 +133,14 @@ void ftrace_nmi_exit(void)

 static void wait_for_nmi(void)
 {
-	int waited = 0;
+	if (!atomic_read(&in_nmi))
+		return;

-	while (atomic_read(&in_nmi)) {
-		waited = 1;
+	do {
 		cpu_relax();
-	}
+	} while(atomic_read(&in_nmi));

-	if (waited)
-		nmi_wait_count++;
+	nmi_wait_count++;
 }

 static int