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| author | Adrian Hunter <adrian.hunter@intel.com> | 2016-03-08 09:38:44 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-03-31 15:52:24 +0200 |
| commit | 46bc29b970f0011a9099077f1db8f3540aa829fe (patch) | |
| tree | 938c97e15993470419809aa90273f7311e2180d6 /tools/perf/util/session.h | |
| parent | perf trace: Pretty print getrandom() args (diff) | |
| download | linux-46bc29b970f0011a9099077f1db8f3540aa829fe.tar.xz linux-46bc29b970f0011a9099077f1db8f3540aa829fe.zip | |
perf tools: Add time conversion event
Intel PT uses the time members from the perf_event_mmap_page to convert
between TSC and perf time.
Due to a lack of foresight when Intel PT was implemented, those time
members were recorded in the (implementation dependent) AUXTRACE_INFO
event, the structure of which is generally inaccessible outside of the
Intel PT decoder. However now the conversion between TSC and perf time
is needed when processing a jitdump file when Intel PT has been used for
tracing.
So add a user event to record the time members. 'perf record' will
synthesize the event if the information is available. And session
processing will put a copy of the event on the session so that tools
like 'perf inject' can easily access it.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1457426324-30158-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/session.h')
| -rw-r--r-- | tools/perf/util/session.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 5f792e35d4c1..f96fc9e8c52e 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -26,6 +26,7 @@ struct perf_session { struct itrace_synth_opts *itrace_synth_opts; struct list_head auxtrace_index; struct trace_event tevent; + struct time_conv_event time_conv; bool repipe; bool one_mmap; void *one_mmap_addr; |