---

yaml --- r: 121101 b: refs/heads/master c: 2b7d039 h: refs/heads/master i: 121099: 483b376 v: v3
git-mirror · Nov 12, 2008 · c22f882 · c22f882
1 parent defc049
commit c22f882
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Showing 4 changed files with 11 additions and 9 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f88c4ae9f8c3939bee4337c75c7a673b5de7a8a7
+refs/heads/master: 2b7d0390a6d6d595f43ea3806639664afe5b9ebe
diff --git a/trunk/arch/x86/kernel/vsyscall_64.c b/trunk/arch/x86/kernel/vsyscall_64.c
@@ -17,13 +17,8 @@
  *  want per guest time just set the kernel.vsyscall64 sysctl to 0.
  */
 
-/* Protect userspace from profiling */
-#ifdef CONFIG_TRACE_UNLIKELY_PROFILE
-# undef likely
-# undef unlikely
-# define likely(x)		likely_notrace(x)
-# define unlikely(x)		unlikely_notrace(x)
-#endif
+/* Disable profiling for userspace code: */
+#define DISABLE_UNLIKELY_PROFILE
 
 #include <linux/time.h>
 #include <linux/init.h>

diff --git a/trunk/arch/x86/vdso/vclock_gettime.c b/trunk/arch/x86/vdso/vclock_gettime.c
@@ -9,6 +9,9 @@
  * Also alternative() doesn't work.
  */
 
+/* Disable profiling for userspace code: */
+#define DISABLE_UNLIKELY_PROFILE
+
 #include <linux/kernel.h>
 #include <linux/posix-timers.h>
 #include <linux/time.h>

diff --git a/trunk/include/linux/compiler.h b/trunk/include/linux/compiler.h
@@ -59,7 +59,11 @@ extern void __chk_io_ptr(const volatile void __iomem *);
  * specific implementations come from the above header files
  */
 
-#ifdef CONFIG_TRACE_UNLIKELY_PROFILE
+/*
+ * Note: DISABLE_UNLIKELY_PROFILE can be used by special lowlevel code
+ * to disable branch tracing on a per file basis.
+ */
+#if defined(CONFIG_TRACE_UNLIKELY_PROFILE) && !defined(DISABLE_UNLIKELY_PROFILE)
 struct ftrace_likely_data {
 	const char *func;
 	const char *file;