---

yaml --- r: 323663 b: refs/heads/master c: 5685e0f h: refs/heads/master i: 323661: f4311ef 323659: 38eb329 323655: eb24ee3 323647: 7775746 v: v3
git-mirror · Aug 10, 2012 · 1ca0f4b · 1ca0f4b
1 parent f196de9
commit 1ca0f4b
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Showing 4 changed files with 13 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 91d7753a45f8525dc75b6be01e427dc1c378dc16
+refs/heads/master: 5685e0ff45f5df67e79e9b052b6ffd501ff38c11
diff --git a/trunk/include/linux/perf_event.h b/trunk/include/linux/perf_event.h
@@ -1321,6 +1321,8 @@ extern int perf_output_begin(struct perf_output_handle *handle,
 extern void perf_output_end(struct perf_output_handle *handle);
 extern unsigned int perf_output_copy(struct perf_output_handle *handle,
 			     const void *buf, unsigned int len);
+extern unsigned int perf_output_skip(struct perf_output_handle *handle,
+				     unsigned int len);
 extern int perf_swevent_get_recursion_context(void);
 extern void perf_swevent_put_recursion_context(int rctx);
 extern void perf_event_enable(struct perf_event *event);

diff --git a/trunk/kernel/events/internal.h b/trunk/kernel/events/internal.h
@@ -114,6 +114,10 @@ static inline int memcpy_common(void *dst, const void *src, size_t n)
 
 DEFINE_OUTPUT_COPY(__output_copy, memcpy_common)
 
+#define MEMCPY_SKIP(dst, src, n) (n)
+
+DEFINE_OUTPUT_COPY(__output_skip, MEMCPY_SKIP)
+
 #ifndef arch_perf_out_copy_user
 #define arch_perf_out_copy_user __copy_from_user_inatomic
 #endif

diff --git a/trunk/kernel/events/ring_buffer.c b/trunk/kernel/events/ring_buffer.c
@@ -188,6 +188,12 @@ unsigned int perf_output_copy(struct perf_output_handle *handle,
 	return __output_copy(handle, buf, len);
 }
 
+unsigned int perf_output_skip(struct perf_output_handle *handle,
+			      unsigned int len)
+{
+	return __output_skip(handle, NULL, len);
+}
+
 void perf_output_end(struct perf_output_handle *handle)
 {
 	perf_output_put_handle(handle);