Messages in this thread Patch in this message | | | From | Stephane Eranian <> | Subject | [PATCH v7 5/6] perf record: add new -I option to sample interrupted machine state | Date | Wed, 24 Sep 2014 13:48:41 +0200 |
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Add -I/--intr-regs option to capture machine state registers at interrupt.
Add the corresponding man page description
Signed-off-by: Stephane Eranian <eranian@google.com> --- tools/perf/Documentation/perf-record.txt | 6 ++++++ tools/perf/builtin-record.c | 2 ++ 2 files changed, 8 insertions(+)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index d460049..1a36259 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -214,6 +214,12 @@ if combined with -a or -C options. After starting the program, wait msecs before measuring. This is useful to filter out the startup phase of the program, which is often very different. +-I:: +--intr-regs:: +Capture machine state (registers) at interrupt, i.e., on counter overflows for +each sample. List of captured registers depends on the architecture. This option +is off by default. + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-list[1] diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a1b0403..cd58f01 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -883,6 +883,8 @@ const struct option record_options[] = { "sample transaction flags (special events only)"), OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, "use per-thread mmaps"), + OPT_BOOLEAN('I', "intr-regs", &record.opts.sample_intr_regs, + "Sample machine registers on interrupt"), OPT_END() }; -- 1.7.9.5
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