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| author | Adrian Hunter | 2015-09-25 15:15:39 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2015-09-28 21:53:44 +0200 |
| commit | 601897b54c7ed492a89b262dccd7c6f7faf12b30 (patch) | |
| tree | f7044554d8941c84f3aaba56a93122d59d5a7f20 /tools/perf/Documentation/itrace.txt | |
| parent | perf tools: Add more documentation to export-to-postgresql.py script (diff) | |
| download | kernel-qcow2-linux-601897b54c7ed492a89b262dccd7c6f7faf12b30.tar.gz kernel-qcow2-linux-601897b54c7ed492a89b262dccd7c6f7faf12b30.tar.xz kernel-qcow2-linux-601897b54c7ed492a89b262dccd7c6f7faf12b30.zip | |
perf auxtrace: Add option to synthesize branch stacks on samples
Add AUX area tracing option 'l' to synthesize branch stacks on samples
just like sample type PERF_SAMPLE_BRANCH_STACK. This is taken into use
by Intel PT in a subsequent patch.
Based-on-patch-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1443186956-18718-9-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/itrace.txt')
| -rw-r--r-- | tools/perf/Documentation/itrace.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index 2ff946677e3b..65453f4c7006 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -6,6 +6,7 @@ e synthesize error events d create a debug log g synthesize a call chain (use with i or x) + l synthesize last branch entries (use with i or x) The default is all events i.e. the same as --itrace=ibxe @@ -20,3 +21,6 @@ Also the call chain size (default 16, max. 1024) for instructions or transactions events can be specified. + + Also the number of last branch entries (default 64, max. 1024) for + instructions or transactions events can be specified. |