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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2020-07-02 14:53:45 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-07-03 08:30:10 -0300 |
| commit | 374855c5e4a76f7cc7f9aeb613c54929510eff18 (patch) | |
| tree | 8cdcf0a22efc8a2b6f673e18fedf71d32e67d027 /block/scsi_ioctl.c | |
| parent | f18d5cf86cdb58eb50cafb5a5e20943ec7a61b1f (diff) | |
| download | linux-374855c5e4a76f7cc7f9aeb613c54929510eff18.tar.bz2 | |
tools lib traceevent: Add API to read time information from kbuffer
Add the functions kbuffer_subbuf_timestamp() and kbuffer_ptr_delta() to
get the timing data stored in the ring buffer that is used to produced
the time stamps of the records.
This is useful for tools like trace-cmd to be able to display the
content of the read data to understand why the records show the time
stamps that they do.
Link: http://lore.kernel.org/linux-trace-devel/20200625100516.365338-2-tz.stoyanov@gmail.com
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
[ Ported from trace-cmd.git ]
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200702185703.619656282@goodmis.org
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'block/scsi_ioctl.c')
0 files changed, 0 insertions, 0 deletions