Commit d1b1552e authored Sep 20, 2018 by Andi Kleen Committed by Arnaldo Carvalho de Melo Oct 24, 2018

tools script: Add --call-trace and --call-ret-trace



Add short cut options to print PT call trace and call-ret-trace, for
calls and call and returns. Roughly corresponds to ftrace function
tracer and function graph tracer.

Just makes these common use cases nicer to use.

% perf record -a -e intel_pt// sleep 1
% perf script --call-trace
	    perf   900 [000] 194167.205652203: ([kernel.kallsyms])          perf_pmu_enable
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])          __x86_indirect_thunk_rax
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])          event_filter_match
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])          group_sched_in
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])              __x86_indirect_thunk_rax
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])              event_sched_in.isra.107
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])                  perf_event_set_state.part.71
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])                      perf_event_update_time
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])                  perf_pmu_disable
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])                  perf_log_itrace_start
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])                  __x86_indirect_thunk_rax
            perf   900 [000] 194167.205652203: ([kernel.kallsyms])                      perf_event_update_userpage

% perf script --call-ret-trace
	    perf   900 [000] 194167.205652203:   tr strt     ([unknown])        pt_config
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])            pt_config
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])            pt_event_add
            perf   900 [000] 194167.205652203:   call        ([kernel.kallsyms])            perf_pmu_enable
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])            perf_pmu_nop_void
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])            event_sched_in.isra.107
            perf   900 [000] 194167.205652203:   call        ([kernel.kallsyms])            __x86_indirect_thunk_rax
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])            perf_pmu_nop_int
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])            group_sched_in
            perf   900 [000] 194167.205652203:   call        ([kernel.kallsyms])            event_filter_match
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])            event_filter_match
            perf   900 [000] 194167.205652203:   call        ([kernel.kallsyms])            group_sched_in
            perf   900 [000] 194167.205652203:   call        ([kernel.kallsyms])                __x86_indirect_thunk_rax
            perf   900 [000] 194167.205652203:   return      ([kernel.kallsyms])                perf_pmu_nop_txn
            perf   900 [000] 194167.205652203:   call        ([kernel.kallsyms])                event_sched_in.isra.107
            perf   900 [000] 194167.205652203:   call        ([kernel.kallsyms])                    perf_event_set_state.part.71

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@arm.com>
Link: http://lkml.kernel.org/r/20180920180540.14039-4-andi@firstfloor.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 4eb06815

tools/perf/Documentation/perf-script.txt

+7 −0

Original line number	Diff line number	Diff line
		@@ -390,6 +390,13 @@ include::itrace.txt[]
		--xed::
		Run xed disassembler on output. Requires installing the xed disassembler.

		--call-trace::
		Show call stream for intel_pt traces. The CPUs are interleaved, but
		can be filtered with -C.

		--call-ret-trace::
		Show call and return stream for intel_pt traces.

		SEE ALSO
		--------
		linkperf:perf-record[1], linkperf:perf-script-perl[1],

tools/perf/builtin-script.c

+24 −0

Original line number	Diff line number	Diff line
		@@ -3122,6 +3122,26 @@ static int parse_xed(const struct option *opt __maybe_unused,
		return 0;
		}

		static int parse_call_trace(const struct option *opt __maybe_unused,
		const char *str __maybe_unused,
		int unset __maybe_unused)
		{
		parse_output_fields(NULL, "-ip,-addr,-event,-period,+callindent", 0);
		itrace_parse_synth_opts(opt, "cewp", 0);
		nanosecs = true;
		return 0;
		}

		static int parse_callret_trace(const struct option *opt __maybe_unused,
		const char *str __maybe_unused,
		int unset __maybe_unused)
		{
		parse_output_fields(NULL, "-ip,-addr,-event,-period,+callindent,+flags", 0);
		itrace_parse_synth_opts(opt, "crewp", 0);
		nanosecs = true;
		return 0;
		}

		int cmd_script(int argc, const char **argv)
		{
		bool show_full_info = false;
		@@ -3213,6 +3233,10 @@ int cmd_script(int argc, const char **argv)
		"Decode instructions from itrace", parse_insn_trace),
		OPT_CALLBACK_OPTARG(0, "xed", NULL, NULL, NULL,
		"Run xed disassembler on output", parse_xed),
		OPT_CALLBACK_OPTARG(0, "call-trace", &itrace_synth_opts, NULL, NULL,
		"Decode calls from from itrace", parse_call_trace),
		OPT_CALLBACK_OPTARG(0, "call-ret-trace", &itrace_synth_opts, NULL, NULL,
		"Decode calls and returns from itrace", parse_callret_trace),
		OPT_STRING(0, "stop-bt", &symbol_conf.bt_stop_list_str, "symbol[,symbol...]",
		"Stop display of callgraph at these symbols"),
		OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),

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