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authorFrederic Weisbecker <fweisbec@gmail.com>2009-06-26 16:28:01 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-26 16:47:01 +0200
commitf55c555226b1010b249730ec6b232e5470286950 (patch)
tree27523398f7d2487e06532245cc6ed745a611ccf0 /tools/perf
parent8cb76d99d715741637b6d0884f389e17e9cb05d2 (diff)
perf report: Print sorted callchains per histogram entries
Use the newly created callchains radix tree to gather the chains stats from the recorded events and then print the callchains for all of them, sorted by hits, using the "-c" parameter with perf report. Example: 66.15% [k] atm_clip_exit 63.08% 0xffffffffffffff80 0xffffffff810196a8 0xffffffff810c14c8 0xffffffff8101a79c 0xffffffff810194f3 0xffffffff8106ab7f 0xffffffff8106abe5 0xffffffff8106acde 0xffffffff8100d94b 0xffffffff8153e7ea [...] 1.54% 0xffffffffffffff80 0xffffffff810196a8 0xffffffff810c14c8 0xffffffff8101a79c [...] Symbols are not yet resolved. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1246026481-8314-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-report.c82
1 files changed, 71 insertions, 11 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 28d1cb2127e9..ed391db9e0f8 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -15,6 +15,7 @@
#include "util/rbtree.h"
#include "util/symbol.h"
#include "util/string.h"
+#include "util/callchain.h"
#include "perf.h"
#include "util/header.h"
@@ -52,6 +53,7 @@ static char *parent_pattern = default_parent_pattern;
static regex_t parent_regex;
static int exclude_other = 1;
+static int callchain;
static u64 sample_type;
@@ -488,17 +490,19 @@ static size_t threads__fprintf(FILE *fp)
static struct rb_root hist;
struct hist_entry {
- struct rb_node rb_node;
-
- struct thread *thread;
- struct map *map;
- struct dso *dso;
- struct symbol *sym;
- struct symbol *parent;
- u64 ip;
- char level;
-
- u64 count;
+ struct rb_node rb_node;
+
+ struct thread *thread;
+ struct map *map;
+ struct dso *dso;
+ struct symbol *sym;
+ struct symbol *parent;
+ u64 ip;
+ char level;
+ struct callchain_node callchain;
+ struct rb_root sorted_chain;
+
+ u64 count;
};
/*
@@ -769,6 +773,48 @@ hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
}
static size_t
+callchain__fprintf(FILE *fp, struct callchain_node *self, u64 total_samples)
+{
+ struct callchain_list *chain;
+ size_t ret = 0;
+
+ if (!self)
+ return 0;
+
+ ret += callchain__fprintf(fp, self->parent, total_samples);
+
+
+ list_for_each_entry(chain, &self->val, list)
+ ret += fprintf(fp, " %p\n", (void *)chain->ip);
+
+ return ret;
+}
+
+static size_t
+hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
+ u64 total_samples)
+{
+ struct rb_node *rb_node;
+ struct callchain_node *chain;
+ size_t ret = 0;
+
+ rb_node = rb_first(&self->sorted_chain);
+ while (rb_node) {
+ double percent;
+
+ chain = rb_entry(rb_node, struct callchain_node, rb_node);
+ percent = chain->hit * 100.0 / total_samples;
+ ret += fprintf(fp, " %6.2f%%\n", percent);
+ ret += callchain__fprintf(fp, chain, total_samples);
+ ret += fprintf(fp, "\n");
+ rb_node = rb_next(rb_node);
+ }
+
+ return ret;
+}
+
+
+static size_t
hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
{
struct sort_entry *se;
@@ -808,6 +854,9 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
ret += fprintf(fp, "\n");
+ if (callchain)
+ hist_entry_callchain__fprintf(fp, self, total_samples);
+
return ret;
}
@@ -892,6 +941,7 @@ hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
.level = level,
.count = count,
.parent = NULL,
+ .sorted_chain = RB_ROOT
};
int cmp;
@@ -934,6 +984,8 @@ hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
if (!cmp) {
he->count += count;
+ if (callchain)
+ append_chain(&he->callchain, chain);
return 0;
}
@@ -947,6 +999,10 @@ hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
if (!he)
return -ENOMEM;
*he = entry;
+ if (callchain) {
+ callchain_init(&he->callchain);
+ append_chain(&he->callchain, chain);
+ }
rb_link_node(&he->rb_node, parent, p);
rb_insert_color(&he->rb_node, &hist);
@@ -1023,6 +1079,9 @@ static void output__insert_entry(struct hist_entry *he)
struct rb_node *parent = NULL;
struct hist_entry *iter;
+ if (callchain)
+ sort_chain_to_rbtree(&he->sorted_chain, &he->callchain);
+
while (*p != NULL) {
parent = *p;
iter = rb_entry(parent, struct hist_entry, rb_node);
@@ -1599,6 +1658,7 @@ static const struct option options[] = {
"regex filter to identify parent, see: '--sort parent'"),
OPT_BOOLEAN('x', "exclude-other", &exclude_other,
"Only display entries with parent-match"),
+ OPT_BOOLEAN('c', "callchain", &callchain, "Display callchains"),
OPT_END()
};