Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH 15/21] perf report: Add --children option | Date | Fri, 7 Feb 2014 10:35:17 +0900 |
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The --children option is for showing accumulated overhead (period) value as well as self overhead.
Tested-by: Arun Sharma <asharma@fb.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- tools/perf/Documentation/perf-report.txt | 5 +++++ tools/perf/builtin-report.c | 10 ++++++++++ 2 files changed, 15 insertions(+)
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 8eab8a4bdeb8..710fc8b18f6b 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -141,6 +141,11 @@ OPTIONS Default: fractal,0.5,callee,function. +--children:: + Accumulate callchain of children to parent entry so that then can + show up in the output. The output will have a new "Children" column + and will be sorted on the data. It requires callchains are recorded. + --max-stack:: Set the stack depth limit when parsing the callchain, anything beyond the specified depth will be ignored. This is a trade-off diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 967ba75277fd..fba27e2e1491 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -172,6 +172,14 @@ static int report__setup_sample_type(struct report *rep) } } + if (symbol_conf.cumulate_callchain) { + /* Silently ignore if callchain is missing */ + if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) { + symbol_conf.cumulate_callchain = false; + perf_hpp__cancel_cumulate(); + } + } + if (sort__mode == SORT_MODE__BRANCH) { if (!is_pipe && !(sample_type & PERF_SAMPLE_BRANCH_STACK)) { @@ -636,6 +644,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order", "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address). " "Default: fractal,0.5,callee,function", &parse_callchain_opt, callchain_default_opt), + OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain, + "Accumulate callchains of children and show total overhead as well"), OPT_INTEGER(0, "max-stack", &report.max_stack, "Set the maximum stack depth when parsing the callchain, " "anything beyond the specified depth will be ignored. " -- 1.7.11.7
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