diff options
| author | Tom Zanussi <tom.zanussi@linux.intel.com> | 2018-01-16 03:51:39 +0100 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-03-10 22:05:50 +0100 |
| commit | 00b4145298aeb05a2d110117ed18148cb21ebd14 (patch) | |
| tree | 610810c0d71a584fe63b555d07dafba619ab8054 /include | |
| parent | tracing: Remove code which merges duplicates (diff) | |
| download | linux-00b4145298aeb05a2d110117ed18148cb21ebd14.tar.xz linux-00b4145298aeb05a2d110117ed18148cb21ebd14.zip | |
ring-buffer: Add interface for setting absolute time stamps
Define a new function, tracing_set_time_stamp_abs(), which can be used
to enable or disable the use of absolute timestamps rather than time
deltas for a trace array.
Only the interface is added here; a subsequent patch will add the
underlying implementation.
Link: http://lkml.kernel.org/r/ce96119de44c7fe0ee44786d15254e9b493040d3.1516069914.git.tom.zanussi@linux.intel.com
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Baohong Liu <baohong.liu@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ring_buffer.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 7d9eb39fa76a..025159e17e1b 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -178,6 +178,8 @@ void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer, int cpu, u64 *ts); void ring_buffer_set_clock(struct ring_buffer *buffer, u64 (*clock)(void)); +void ring_buffer_set_time_stamp_abs(struct ring_buffer *buffer, bool abs); +bool ring_buffer_time_stamp_abs(struct ring_buffer *buffer); size_t ring_buffer_page_len(void *page); |