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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-05-10 20:04:11 +0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-05-10 20:13:49 +0400
commit1c02c4d2e92f2097f1bba63ec71560b0e05a7f36 (patch)
treead2a722931398ce3cd3ae850c4cfa148558a52ea /tools/perf/builtin-report.c
parentd118f8ba6ac2af2bf11d40cba657c813f0f39ca2 (diff)
downloadlinux-1c02c4d2e92f2097f1bba63ec71560b0e05a7f36.tar.xz
perf hist: Introduce hists class and move lots of methods to it
In cbbc79a we introduced support for multiple events by introducing a new "event_stat_id" struct and then made several perf_session methods receive a point to it instead of a pointer to perf_session, and kept the event_stats and hists rb_tree in perf_session. While working on the new newt based browser, I realised that it would be better to introduce a new class, "hists" (short for "histograms"), renaming the "event_stat_id" struct and the perf_session methods that were really "hists" methods, as they manipulate only struct hists members, not touching anything in the other perf_session members. Other optimizations, such as calculating the maximum lenght of a symbol name present in an hists instance will be possible as we add them, avoiding a re-traversal just for finding that information. The rationale for the name "hists" to replace "event_stat_id" is that we may have multiple sets of hists for the same event_stat id, as, for instance, the 'perf diff' tool has, so event stat id is not what characterizes what this struct and the functions that manipulate it do. Cc: Eric B Munson <ebmunson@us.ibm.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.c71
1 files changed, 35 insertions, 36 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 642a6d8eb5dc..53077fd973f0 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -44,16 +44,17 @@ static char *pretty_printing_style = default_pretty_printing_style;
static char callchain_default_opt[] = "fractal,0.5";
-static struct event_stat_id *get_stats(struct perf_session *self,
- u64 event_stream, u32 type, u64 config)
+static struct hists *perf_session__hists_findnew(struct perf_session *self,
+ u64 event_stream, u32 type,
+ u64 config)
{
- struct rb_node **p = &self->stats_by_id.rb_node;
+ struct rb_node **p = &self->hists_tree.rb_node;
struct rb_node *parent = NULL;
- struct event_stat_id *iter, *new;
+ struct hists *iter, *new;
while (*p != NULL) {
parent = *p;
- iter = rb_entry(parent, struct event_stat_id, rb_node);
+ iter = rb_entry(parent, struct hists, rb_node);
if (iter->config == config)
return iter;
@@ -64,15 +65,15 @@ static struct event_stat_id *get_stats(struct perf_session *self,
p = &(*p)->rb_left;
}
- new = malloc(sizeof(struct event_stat_id));
+ new = malloc(sizeof(struct hists));
if (new == NULL)
return NULL;
- memset(new, 0, sizeof(struct event_stat_id));
+ memset(new, 0, sizeof(struct hists));
new->event_stream = event_stream;
new->config = config;
new->type = type;
rb_link_node(&new->rb_node, parent, p);
- rb_insert_color(&new->rb_node, &self->stats_by_id);
+ rb_insert_color(&new->rb_node, &self->hists_tree);
return new;
}
@@ -84,7 +85,7 @@ static int perf_session__add_hist_entry(struct perf_session *self,
struct symbol *parent = NULL;
int err = -ENOMEM;
struct hist_entry *he;
- struct event_stat_id *stats;
+ struct hists *hists;
struct perf_event_attr *attr;
if ((sort__has_parent || symbol_conf.use_callchain) && data->callchain) {
@@ -96,13 +97,12 @@ static int perf_session__add_hist_entry(struct perf_session *self,
attr = perf_header__find_attr(data->id, &self->header);
if (attr)
- stats = get_stats(self, data->id, attr->type, attr->config);
+ hists = perf_session__hists_findnew(self, data->id, attr->type, attr->config);
else
- stats = get_stats(self, data->id, 0, 0);
- if (stats == NULL)
+ hists = perf_session__hists_findnew(self, data->id, 0, 0);
+ if (hists == NULL)
goto out_free_syms;
- he = __perf_session__add_hist_entry(&stats->hists, al, parent,
- data->period);
+ he = __hists__add_entry(hists, al, parent, data->period);
if (he == NULL)
goto out_free_syms;
err = 0;
@@ -117,18 +117,19 @@ static int add_event_total(struct perf_session *session,
struct sample_data *data,
struct perf_event_attr *attr)
{
- struct event_stat_id *stats;
+ struct hists *hists;
if (attr)
- stats = get_stats(session, data->id, attr->type, attr->config);
+ hists = perf_session__hists_findnew(session, data->id,
+ attr->type, attr->config);
else
- stats = get_stats(session, data->id, 0, 0);
+ hists = perf_session__hists_findnew(session, data->id, 0, 0);
- if (!stats)
+ if (!hists)
return -ENOMEM;
- stats->stats.total += data->period;
- session->events_stats.total += data->period;
+ hists->stats.total += data->period;
+ session->hists.stats.total += data->period;
return 0;
}
@@ -292,35 +293,33 @@ static int __cmd_report(void)
if (verbose > 2)
perf_session__fprintf_dsos(session, stdout);
- next = rb_first(&session->stats_by_id);
+ next = rb_first(&session->hists_tree);
while (next) {
- struct event_stat_id *stats;
+ struct hists *hists;
u64 nr_hists;
- stats = rb_entry(next, struct event_stat_id, rb_node);
- perf_session__collapse_resort(&stats->hists);
- nr_hists = perf_session__output_resort(&stats->hists,
- stats->stats.total);
+ hists = rb_entry(next, struct hists, rb_node);
+ hists__collapse_resort(hists);
+ nr_hists = hists__output_resort(hists);
if (use_browser)
- perf_session__browse_hists(&stats->hists, nr_hists,
- stats->stats.total, help,
+ perf_session__browse_hists(&hists->entries, nr_hists,
+ hists->stats.total, help,
input_name);
else {
- if (rb_first(&session->stats_by_id) ==
- rb_last(&session->stats_by_id))
+ if (rb_first(&session->hists.entries) ==
+ rb_last(&session->hists.entries))
fprintf(stdout, "# Samples: %Ld\n#\n",
- stats->stats.total);
+ hists->stats.total);
else
fprintf(stdout, "# Samples: %Ld %s\n#\n",
- stats->stats.total,
- __event_name(stats->type, stats->config));
+ hists->stats.total,
+ __event_name(hists->type, hists->config));
- perf_session__fprintf_hists(&stats->hists, NULL, false, stdout,
- stats->stats.total);
+ hists__fprintf(hists, NULL, false, stdout);
fprintf(stdout, "\n\n");
}
- next = rb_next(&stats->rb_node);
+ next = rb_next(&hists->rb_node);
}
if (!use_browser && sort_order == default_sort_order &&