From 1432ec342ece6a7ef78825ae3a9ba1c91686f71d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 30 Oct 2013 17:05:55 +0900 Subject: [PATCH] perf top: Add --children option The --children option is for showing accumulated overhead (period) value as well as self overhead. It should be used with one of -g or --call-graph option. Signed-off-by: Namhyung Kim Tested-by: Arun Sharma Tested-by: Rodrigo Campos Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/1401335910-16832-21-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/Documentation/perf-top.txt | 8 +++++++- tools/perf/builtin-top.c | 7 +++++++ 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index dcfa54c851e9..180ae02137a5 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -119,7 +119,7 @@ Default is to monitor all CPUS. --fields=:: Specify output field - multiple keys can be specified in CSV format. Following fields are available: - overhead, overhead_sys, overhead_us, sample and period. + overhead, overhead_sys, overhead_us, overhead_children, sample and period. Also it can contain any sort key(s). By default, every sort keys not specified in --field will be appended @@ -161,6 +161,12 @@ Default is to monitor all CPUS. Setup and enable call-graph (stack chain/backtrace) recording, implies -g. +--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 -g/--call-graph option + enabled. + --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-top.c b/tools/perf/builtin-top.c index b1cb5f589ade..fea55e3fc931 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1098,6 +1098,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) OPT_CALLBACK(0, "call-graph", &top.record_opts, "mode[,dump_size]", record_callchain_help, &parse_callchain_opt), + OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain, + "Accumulate callchains of children and show total overhead as well"), OPT_INTEGER(0, "max-stack", &top.max_stack, "Set the maximum stack depth when parsing the callchain. " "Default: " __stringify(PERF_MAX_STACK_DEPTH)), @@ -1203,6 +1205,11 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) top.sym_evsel = perf_evlist__first(top.evlist); + if (!symbol_conf.use_callchain) { + symbol_conf.cumulate_callchain = false; + perf_hpp__cancel_cumulate(); + } + symbol_conf.priv_size = sizeof(struct annotation); symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); -- 2.20.1