diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2021-04-30 10:03:02 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-05-12 18:43:10 +0300 |
| commit | 83d7f5f1ad0ec6072bb5b4ca32795f0c199424e2 (patch) | |
| tree | fbbf353aed5ee090a809ef4cd70b3d35027da10a /tools/perf/util/auxtrace.h | |
| parent | 2a525f6a5502bfd80568e6befb84053cf650ad25 (diff) | |
| download | linux-83d7f5f1ad0ec6072bb5b4ca32795f0c199424e2.tar.xz | |
perf inject: Add --vm-time-correlation option
Intel PT timestamps are affected by virtualization. Add a new option
that will allow the Intel PT decoder to correlate the timestamps and
translate the virtual machine timestamps to host timestamps.
The advantages of making this a separate step, rather than a part of
normal decoding are that it is simpler to implement, and it needs to
be done only once.
This patch adds only the option. Later patches add Intel PT support.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20210430070309.17624-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/auxtrace.h')
| -rw-r--r-- | tools/perf/util/auxtrace.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 59c3c05384a4..9ac2ac1bd793 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -90,6 +90,9 @@ enum itrace_period_type { * @remote_access: whether to synthesize remote access events * @mem: whether to synthesize memory events * @timeless_decoding: prefer "timeless" decoding i.e. ignore timestamps + * @vm_time_correlation: perform VM Time Correlation + * @vm_tm_corr_dry_run: VM Time Correlation dry-run + * @vm_tm_corr_args: VM Time Correlation implementation-specific arguments * @callchain_sz: maximum callchain size * @last_branch_sz: branch context size * @period: 'instructions' events period @@ -130,6 +133,9 @@ struct itrace_synth_opts { bool remote_access; bool mem; bool timeless_decoding; + bool vm_time_correlation; + bool vm_tm_corr_dry_run; + char *vm_tm_corr_args; unsigned int callchain_sz; unsigned int last_branch_sz; unsigned long long period; |