Messages in this thread Patch in this message | | | From | Adrian Hunter <> | Subject | [PATCH V4 18/23] perf report: Add Instruction Tracing support | Date | Thu, 8 Jan 2015 14:52:22 +0200 |
| |
Add support for decoding an Instruction Trace.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> --- tools/perf/Documentation/perf-report.txt | 28 ++++++++++++++++++++++++++++ tools/perf/builtin-report.c | 12 ++++++++++++ 2 files changed, 40 insertions(+)
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index dd7cccd..835d1e0 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -318,6 +318,34 @@ OPTIONS --header-only:: Show only perf.data header (forces --stdio). +-Z:: +--itrace:: + Options for decoding Instruction Tracing data. The options are: + + i synthesize instructions events + b synthesize branches events + c synthesize branches events (calls only) + r synthesize branches events (returns only) + e synthesize error events + d create a debug log + g synthesize a call chain for instructions events + + The default is all events i.e. the same as -Zibe + + In addition, the period (default 1000) for instructions events can be + specified in units of: + + i instructions (default) + t ticks + ms milliseconds + us microseconds + ns nanoseconds + + Also the call chain size (default 16, max. 1024) for instructions + events can be specified. + + To disable decoding entirely, use --no-itrace. + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-annotate[1] diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 2f91094..1533dbd 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -36,6 +36,8 @@ #include "util/data.h" #include "arch/common.h" +#include "util/itrace.h" + #include <dlfcn.h> #include <linux/bitmap.h> @@ -583,6 +585,7 @@ parse_percent_limit(const struct option *opt, const char *str, int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) { struct perf_session *session; + struct itrace_synth_opts itrace_synth_opts = {0}; struct stat st; bool has_br_stack = false; int branch_mode = -1; @@ -605,6 +608,10 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) .attr = perf_event__process_attr, .tracing_data = perf_event__process_tracing_data, .build_id = perf_event__process_build_id, + .id_index = perf_event__process_id_index, + .itrace_info = perf_event__process_itrace_info, + .itrace = perf_event__process_itrace, + .itrace_error = perf_event__count_itrace_error, .ordered_events = true, .ordering_requires_timestamps = true, }, @@ -711,6 +718,9 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) "Don't show entries under that percent", parse_percent_limit), OPT_CALLBACK(0, "percentage", NULL, "relative|absolute", "how to display percentage of filtered entries", parse_filter_percentage), + OPT_CALLBACK_OPTARG('Z', "itrace", &itrace_synth_opts, NULL, "opts", + "Instruction Tracing options", + itrace_parse_synth_opts), OPT_END() }; struct perf_data_file file = { @@ -755,6 +765,8 @@ repeat: report.queue_size); } + session->itrace_synth_opts = &itrace_synth_opts; + report.session = session; has_br_stack = perf_header__has_feat(&session->header, -- 1.9.1
| |