[tip:perfcounters/core] perf report: Filter to parent set by default

tip-bot for Ingo Molnar
2009-06-18T13:40:49Z

Commit-ID: b8e6d829729d1a5991a9f628205b671cac2ec06f
Gitweb: http://git.kernel.org/tip/b8e6d829729d1a5991a9f628205b671cac2ec06f
Author: Ingo Molnar <mingo@elte.hu>
AuthorDate: Thu, 18 Jun 2009 14:32:19 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 18 Jun 2009 14:32:19 +0200

perf report: Filter to parent set by default

Make it easier to use parent filtering - default to a filtered
output. Also add the parent column so that we get collapsing but
dont display it by default.

add --no-exclude-other to override this.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

---
tools/perf/Makefile | 2 +-
tools/perf/builtin-report.c | 30 +++++++++++++++++++++++++++---
2 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 714db73..672c5f0 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -164,7 +164,7 @@ endif

# CFLAGS and LDFLAGS are for the users to override from the command line.

-CFLAGS = $(M64) -ggdb3 -Wall -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -O6
+CFLAGS = $(M64) -ggdb3 -Wall -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -Werror -O6
LDFLAGS = -lpthread -lrt -lelf -lm
ALL_CFLAGS = $(CFLAGS)
ALL_LDFLAGS = $(LDFLAGS)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index fe66895..86981bd 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -46,9 +46,12 @@ static int full_paths;
static unsigned long page_size;
static unsigned long mmap_window = 32;

-static char *parent_pattern = "^sys_|^do_page_fault";
+static char default_parent_pattern[] = "^sys_|^do_page_fault";
+static char *parent_pattern = default_parent_pattern;
static regex_t parent_regex;

+static int exclude_other = 1;
+
struct ip_event {
struct perf_event_header header;
__u64 ip;
@@ -742,6 +745,9 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, __u64 total_samples)
struct sort_entry *se;
size_t ret;

+ if (exclude_other && !self->parent)
+ return 0;
+
if (total_samples) {
double percent = self->count * 100.0 / total_samples;
char *color = PERF_COLOR_NORMAL;
@@ -764,6 +770,9 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, __u64 total_samples)
ret = fprintf(fp, "%12Ld ", self->count);

list_for_each_entry(se, &hist_entry__sort_list, list) {
+ if (exclude_other && (se == &sort_parent))
+ continue;
+
fprintf(fp, " ");
ret += se->print(fp, self);
}
@@ -855,6 +864,7 @@ hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
.ip = ip,
.level = level,
.count = count,
+ .parent = NULL,
};
int cmp;

@@ -1029,14 +1039,20 @@ static size_t output__fprintf(FILE *fp, __u64 total_samples)
fprintf(fp, "#\n");

fprintf(fp, "# Overhead");
- list_for_each_entry(se, &hist_entry__sort_list, list)
+ list_for_each_entry(se, &hist_entry__sort_list, list) {
+ if (exclude_other && (se == &sort_parent))
+ continue;
fprintf(fp, " %s", se->header);
+ }
fprintf(fp, "\n");

fprintf(fp, "# ........");
list_for_each_entry(se, &hist_entry__sort_list, list) {
int i;

+ if (exclude_other && (se == &sort_parent))
+ continue;
+
fprintf(fp, " ");
for (i = 0; i < strlen(se->header); i++)
fprintf(fp, ".");
@@ -1050,7 +1066,8 @@ static size_t output__fprintf(FILE *fp, __u64 total_samples)
ret += hist_entry__fprintf(fp, pos, total_samples);
}

- if (!strcmp(sort_order, default_sort_order)) {
+ if (sort_order == default_sort_order &&
+ parent_pattern == default_parent_pattern) {
fprintf(fp, "#\n");
fprintf(fp, "# (For more details, try: perf report --sort comm,dso,symbol)\n");
fprintf(fp, "#\n");
@@ -1508,6 +1525,8 @@ static const struct option options[] = {
"Don't shorten the pathnames taking into account the cwd"),
OPT_STRING('p', "parent", &parent_pattern, "regex",
"regex filter to identify parent, see: '--sort parent'"),
+ OPT_BOOLEAN('x', "exclude-other", &exclude_other,
+ "Only display entries with parent-match"),
OPT_END()
};

@@ -1536,6 +1555,11 @@ int cmd_report(int argc, const char **argv, const char *prefix)

setup_sorting();

+ if (parent_pattern != default_parent_pattern)
+ sort_dimension__add("parent");
+ else
+ exclude_other = 0;
+
/*
* Any (unrecognized) arguments left?
*/