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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-05-09 20:28:10 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-05-09 21:15:35 -0300
commit232a5c948da5e23dff27e48180abf4a4238f7602 (patch)
treebf17e2e428a77b656946e798e3b099dc09c658be /tools/perf/builtin-report.c
parent1f626bc36847ac8dd192f055aed0f9678a781313 (diff)
downloadop-kernel-dev-232a5c948da5e23dff27e48180abf4a4238f7602.zip
op-kernel-dev-232a5c948da5e23dff27e48180abf4a4238f7602.tar.gz
perf report: Allow limiting the number of entries to print in callchains
Works by adding a third parameter to the '-g' argument, after the graph type and minimum percentage, for example: [root@doppio linux-2.6-tip]# perf report -g fractal,0.5,2 Will show only the first two symbols where at least 0.5% of the samples took place. All the other symbols that don't fall outside these constraints will be put together in the last entry, prefixed with "[...]" and the total percentage for them. Suggested-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-report.c')
-rw-r--r--tools/perf/builtin-report.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 5e2f47f..642a6d8 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -343,7 +343,7 @@ static int
parse_callchain_opt(const struct option *opt __used, const char *arg,
int unset)
{
- char *tok;
+ char *tok, *tok2;
char *endptr;
/*
@@ -388,10 +388,13 @@ parse_callchain_opt(const struct option *opt __used, const char *arg,
if (!tok)
goto setup;
+ tok2 = strtok(NULL, ",");
callchain_param.min_percent = strtod(tok, &endptr);
if (tok == endptr)
return -1;
+ if (tok2)
+ callchain_param.print_limit = strtod(tok2, &endptr);
setup:
if (register_callchain_param(&callchain_param) < 0) {
fprintf(stderr, "Can't register callchain params\n");
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