From 6581f6e35f7d0338f699fce660adb48e863f2b59 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 13 Dec 2011 00:16:50 +0900 Subject: [PATCH] perf report: Document '--call-graph' for optional print_limit argument The '--call-graph' command line option can receive undocumented optional print_limit argument. Besides, use strtoul() to parse the option since its type is u32. Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1323703017-6060-2-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-report.txt | 5 +++-- tools/perf/builtin-report.c | 6 +++--- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index dc85392a5ac7..35af0dc8ccb4 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -80,9 +80,10 @@ OPTIONS --dump-raw-trace:: Dump raw trace in ASCII. --g [type,min,order]:: +-g [type,min[,limit],order]:: --call-graph:: - Display call chains using type, min percent threshold and order. + Display call chains using type, min percent threshold, optional print + limit and order. type can be either: - flat: single column, linear exposure of call chains. - graph: use a graph tree, displaying absolute overhead rates. diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index ece7c5d3f504..b2654c9fb5c6 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -407,7 +407,7 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset) goto setup; if (tok2[0] != 'c') { - callchain_param.print_limit = strtod(tok2, &endptr); + callchain_param.print_limit = strtoul(tok2, &endptr, 0); tok2 = strtok(NULL, ","); if (!tok2) goto setup; @@ -485,8 +485,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __used) "regex filter to identify parent, see: '--sort parent'"), OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other, "Only display entries with parent-match"), - OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent, call_order", - "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold and callchain order. " + 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 and callchain order. " "Default: fractal,0.5,callee", &parse_callchain_opt, callchain_default_opt), OPT_BOOLEAN('G', "inverted", &report.inverted_callchain, "alias for inverted call graph"), -- 2.20.1