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[RFC,04/11] perf: Add a PERF_RECORD_DEVICE event type

Message ID 1431008154-6833-5-git-send-email-robert@sixbynine.org (mailing list archive)
State New, archived
Headers show

Commit Message

Robert Bragg May 7, 2015, 2:15 p.m. UTC 
To allow for more extensible, device specific, perf record types this
adds a generic PERF_RECORD_DEVICE type that can be used by device
drivers. Driver developers can then document some driver-specific header
to further detail such a record's type.

Signed-off-by: Robert Bragg <robert@sixbynine.org>
---
 include/uapi/linux/perf_event.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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Patch

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index a25967b..688e192 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -726,6 +726,19 @@  enum perf_event_type {
 	 */
 	PERF_RECORD_MMAP2			= 10,
 
+	/*
+	 * The DEVICE record implies some device driver specific record that
+	 * will have some further mechanism for describing the contents of
+	 * the record (i.e. some driver specific event header).
+	 *
+	 * struct {
+	 *	struct perf_event_header	header;
+	 *
+	 *	struct DEVICE_EVENT_HEADER	device_header;
+	 * };
+	 */
+	PERF_RECORD_DEVICE			= 11,
+
 	PERF_RECORD_MAX,			/* non-ABI */
 };