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>

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 714db73..672c5f0 100644 (file)
--- 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 (file)
--- 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?
         */