perf report: Introduce -n/--show-nr-samples
[acme@doppio pahole]$ perf report -ns comm,dso,symbol -d /lib64/libc-2.10.1.so -C pahole | head -17
21.94% 32101 [.] _int_malloc
20.10% 29402 [.] __GI_strcmp
16.77% 24533 [.] __tsearch
12.61% 18450 [.] malloc_consolidate
6.42% 9394 [.] _int_free
6.28% 9191 [.] __tfind
4.56% 6678 [.] __GI___libc_free
4.46% 6520 [.] _IO_vfprintf_internal
2.59% 3786 [.] __malloc
1.17% 1716 [.] __GI_memcpy
[acme@doppio pahole]$
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1247325517-12272-5-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index f342212..430a195 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -51,6 +51,7 @@
static int modules;
static int full_paths;
+static int show_nr_samples;
static unsigned long page_size;
static unsigned long mmap_window = 32;
@@ -1024,6 +1025,13 @@
else
ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
+ if (show_nr_samples) {
+ if (field_sep)
+ fprintf(fp, "%c%lld", *field_sep, self->count);
+ else
+ fprintf(fp, "%11lld", self->count);
+ }
+
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (se->elide)
continue;
@@ -1361,6 +1369,12 @@
fprintf(fp, "#\n");
fprintf(fp, "# Overhead");
+ if (show_nr_samples) {
+ if (field_sep)
+ fprintf(fp, "%cSamples", *field_sep);
+ else
+ fputs(" Samples ", fp);
+ }
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (se->elide)
continue;
@@ -1388,6 +1402,8 @@
goto print_entries;
fprintf(fp, "# ........");
+ if (show_nr_samples)
+ fprintf(fp, " ..........");
list_for_each_entry(se, &hist_entry__sort_list, list) {
unsigned int i;
@@ -1979,6 +1995,8 @@
OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
OPT_BOOLEAN('m', "modules", &modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
+ OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
+ "Show a column with the number of samples"),
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
"sort by key(s): pid, comm, dso, symbol, parent"),
OPT_BOOLEAN('P', "full-paths", &full_paths,