* [PATCH 4/4] perf hist: Introduce hists class and move lots of methods to it
2010-05-10 16:32 [GIT PULL 0/4] perf improvements and fixes Arnaldo Carvalho de Melo
` (2 preceding siblings ...)
2010-05-10 16:32 ` [PATCH 3/4] perf session: create_kernel_maps should use ->host_machine Arnaldo Carvalho de Melo
@ 2010-05-10 16:32 ` Arnaldo Carvalho de Melo
2010-05-10 16:59 ` [GIT PULL 0/4] perf improvements and fixes Ingo Molnar
4 siblings, 0 replies; 6+ messages in thread
From: Arnaldo Carvalho de Melo @ 2010-05-10 16:32 UTC (permalink / raw)
To: Ingo Molnar
Cc: linux-kernel, Arnaldo Carvalho de Melo, Eric B Munson,
Frédéric Weisbecker, Mike Galbraith, Paul Mackerras,
Peter Zijlstra, Tom Zanussi
From: Arnaldo Carvalho de Melo <acme@redhat.com>
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>
---
tools/perf/builtin-annotate.c | 17 ++++----
tools/perf/builtin-diff.c | 50 ++++++++++------------
tools/perf/builtin-report.c | 71 +++++++++++++++----------------
tools/perf/builtin-trace.c | 2 +-
tools/perf/util/event.c | 2 +-
tools/perf/util/event.h | 14 ------
tools/perf/util/hist.c | 92 ++++++++++++++++++----------------------
tools/perf/util/hist.h | 48 ++++++++++++---------
tools/perf/util/session.c | 2 +-
tools/perf/util/session.h | 12 ++++-
10 files changed, 146 insertions(+), 164 deletions(-)
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index c7ac45a..3940964 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -96,8 +96,7 @@ static int annotate__hist_hit(struct hist_entry *he, u64 ip)
return 0;
}
-static int perf_session__add_hist_entry(struct perf_session *self,
- struct addr_location *al)
+static int hists__add_entry(struct hists *self, struct addr_location *al)
{
struct hist_entry *he;
@@ -112,7 +111,7 @@ static int perf_session__add_hist_entry(struct perf_session *self,
return 0;
}
- he = __perf_session__add_hist_entry(&self->hists, al, NULL, 1);
+ he = __hists__add_entry(self, al, NULL, 1);
if (he == NULL)
return -ENOMEM;
@@ -132,7 +131,7 @@ static int process_sample_event(event_t *event, struct perf_session *session)
return -1;
}
- if (!al.filtered && perf_session__add_hist_entry(session, &al)) {
+ if (!al.filtered && hists__add_entry(&session->hists, &al)) {
pr_warning("problem incrementing symbol count, "
"skipping event\n");
return -1;
@@ -514,11 +513,11 @@ static void annotate_sym(struct hist_entry *he)
free_source_line(he, len);
}
-static void perf_session__find_annotations(struct perf_session *self)
+static void hists__find_annotations(struct hists *self)
{
struct rb_node *nd;
- for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
struct sym_priv *priv;
@@ -570,9 +569,9 @@ static int __cmd_annotate(void)
if (verbose > 2)
perf_session__fprintf_dsos(session, stdout);
- perf_session__collapse_resort(&session->hists);
- perf_session__output_resort(&session->hists, session->event_total[0]);
- perf_session__find_annotations(session);
+ hists__collapse_resort(&session->hists);
+ hists__output_resort(&session->hists);
+ hists__find_annotations(&session->hists);
out_delete:
perf_session__delete(session);
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 613a5c4..3a95a02 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -22,10 +22,10 @@ static char diff__default_sort_order[] = "dso,symbol";
static bool force;
static bool show_displacement;
-static int perf_session__add_hist_entry(struct perf_session *self,
- struct addr_location *al, u64 count)
+static int hists__add_entry(struct hists *self,
+ struct addr_location *al, u64 count)
{
- if (__perf_session__add_hist_entry(&self->hists, al, NULL, count) != NULL)
+ if (__hists__add_entry(self, al, NULL, count) != NULL)
return 0;
return -ENOMEM;
}
@@ -49,12 +49,12 @@ static int diff__process_sample_event(event_t *event, struct perf_session *sessi
event__parse_sample(event, session->sample_type, &data);
- if (perf_session__add_hist_entry(session, &al, data.period)) {
+ if (hists__add_entry(&session->hists, &al, data.period)) {
pr_warning("problem incrementing symbol count, skipping event\n");
return -1;
}
- session->events_stats.total += data.period;
+ session->hists.stats.total += data.period;
return 0;
}
@@ -87,35 +87,34 @@ static void perf_session__insert_hist_entry_by_name(struct rb_root *root,
rb_insert_color(&he->rb_node, root);
}
-static void perf_session__resort_hist_entries(struct perf_session *self)
+static void hists__resort_entries(struct hists *self)
{
unsigned long position = 1;
struct rb_root tmp = RB_ROOT;
- struct rb_node *next = rb_first(&self->hists);
+ struct rb_node *next = rb_first(&self->entries);
while (next != NULL) {
struct hist_entry *n = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&n->rb_node);
- rb_erase(&n->rb_node, &self->hists);
+ rb_erase(&n->rb_node, &self->entries);
n->position = position++;
perf_session__insert_hist_entry_by_name(&tmp, n);
}
- self->hists = tmp;
+ self->entries = tmp;
}
-static void perf_session__set_hist_entries_positions(struct perf_session *self)
+static void hists__set_positions(struct hists *self)
{
- perf_session__output_resort(&self->hists, self->events_stats.total);
- perf_session__resort_hist_entries(self);
+ hists__output_resort(self);
+ hists__resort_entries(self);
}
-static struct hist_entry *
-perf_session__find_hist_entry(struct perf_session *self,
- struct hist_entry *he)
+static struct hist_entry *hists__find_entry(struct hists *self,
+ struct hist_entry *he)
{
- struct rb_node *n = self->hists.rb_node;
+ struct rb_node *n = self->entries.rb_node;
while (n) {
struct hist_entry *iter = rb_entry(n, struct hist_entry, rb_node);
@@ -132,14 +131,13 @@ perf_session__find_hist_entry(struct perf_session *self,
return NULL;
}
-static void perf_session__match_hists(struct perf_session *old_session,
- struct perf_session *new_session)
+static void hists__match(struct hists *older, struct hists *newer)
{
struct rb_node *nd;
- for (nd = rb_first(&new_session->hists); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&newer->entries); nd; nd = rb_next(nd)) {
struct hist_entry *pos = rb_entry(nd, struct hist_entry, rb_node);
- pos->pair = perf_session__find_hist_entry(old_session, pos);
+ pos->pair = hists__find_entry(older, pos);
}
}
@@ -159,15 +157,13 @@ static int __cmd_diff(void)
goto out_delete;
}
- perf_session__output_resort(&session[1]->hists,
- session[1]->events_stats.total);
+ hists__output_resort(&session[1]->hists);
if (show_displacement)
- perf_session__set_hist_entries_positions(session[0]);
+ hists__set_positions(&session[0]->hists);
- perf_session__match_hists(session[0], session[1]);
- perf_session__fprintf_hists(&session[1]->hists, session[0],
- show_displacement, stdout,
- session[1]->events_stats.total);
+ hists__match(&session[0]->hists, &session[1]->hists);
+ hists__fprintf(&session[1]->hists, &session[0]->hists,
+ show_displacement, stdout);
out_delete:
for (i = 0; i < 2; ++i)
perf_session__delete(session[i]);
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 642a6d8..53077fd 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 &&
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 9c483e9..6e268ca 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -107,7 +107,7 @@ static int process_sample_event(event_t *event, struct perf_session *session)
data.time, thread->comm);
}
- session->events_stats.total += data.period;
+ session->hists.stats.total += data.period;
return 0;
}
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index d2ea9dd..cce006e 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -368,7 +368,7 @@ int event__process_comm(event_t *self, struct perf_session *session)
int event__process_lost(event_t *self, struct perf_session *session)
{
dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost);
- session->events_stats.lost += self->lost.lost;
+ session->hists.stats.lost += self->lost.lost;
return 0;
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 6cc1b1d..48c2cc9 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -131,20 +131,6 @@ typedef union event_union {
struct build_id_event build_id;
} event_t;
-struct events_stats {
- u64 total;
- u64 lost;
-};
-
-struct event_stat_id {
- struct rb_node rb_node;
- struct rb_root hists;
- struct events_stats stats;
- u64 config;
- u64 event_stream;
- u32 type;
-};
-
void event__print_totals(void);
struct perf_session;
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 0f154a5..410cf56 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -8,21 +8,21 @@ struct callchain_param callchain_param = {
.min_percent = 0.5
};
-static void perf_session__add_cpumode_count(struct hist_entry *he,
- unsigned int cpumode, u64 count)
+static void hist_entry__add_cpumode_count(struct hist_entry *self,
+ unsigned int cpumode, u64 count)
{
switch (cpumode) {
case PERF_RECORD_MISC_KERNEL:
- he->count_sys += count;
+ self->count_sys += count;
break;
case PERF_RECORD_MISC_USER:
- he->count_us += count;
+ self->count_us += count;
break;
case PERF_RECORD_MISC_GUEST_KERNEL:
- he->count_guest_sys += count;
+ self->count_guest_sys += count;
break;
case PERF_RECORD_MISC_GUEST_USER:
- he->count_guest_us += count;
+ self->count_guest_us += count;
break;
default:
break;
@@ -47,12 +47,11 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template)
return self;
}
-struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
- struct addr_location *al,
- struct symbol *sym_parent,
- u64 count)
+struct hist_entry *__hists__add_entry(struct hists *self,
+ struct addr_location *al,
+ struct symbol *sym_parent, u64 count)
{
- struct rb_node **p = &hists->rb_node;
+ struct rb_node **p = &self->entries.rb_node;
struct rb_node *parent = NULL;
struct hist_entry *he;
struct hist_entry entry = {
@@ -89,9 +88,9 @@ struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
if (!he)
return NULL;
rb_link_node(&he->rb_node, parent, p);
- rb_insert_color(&he->rb_node, hists);
+ rb_insert_color(&he->rb_node, &self->entries);
out:
- perf_session__add_cpumode_count(he, al->cpumode, count);
+ hist_entry__add_cpumode_count(he, al->cpumode, count);
return he;
}
@@ -167,7 +166,7 @@ static void collapse__insert_entry(struct rb_root *root, struct hist_entry *he)
rb_insert_color(&he->rb_node, root);
}
-void perf_session__collapse_resort(struct rb_root *hists)
+void hists__collapse_resort(struct hists *self)
{
struct rb_root tmp;
struct rb_node *next;
@@ -177,28 +176,28 @@ void perf_session__collapse_resort(struct rb_root *hists)
return;
tmp = RB_ROOT;
- next = rb_first(hists);
+ next = rb_first(&self->entries);
while (next) {
n = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&n->rb_node);
- rb_erase(&n->rb_node, hists);
+ rb_erase(&n->rb_node, &self->entries);
collapse__insert_entry(&tmp, n);
}
- *hists = tmp;
+ self->entries = tmp;
}
/*
* reverse the map, sort on count.
*/
-static void perf_session__insert_output_hist_entry(struct rb_root *root,
- struct hist_entry *he,
- u64 min_callchain_hits)
+static void __hists__insert_output_entry(struct rb_root *entries,
+ struct hist_entry *he,
+ u64 min_callchain_hits)
{
- struct rb_node **p = &root->rb_node;
+ struct rb_node **p = &entries->rb_node;
struct rb_node *parent = NULL;
struct hist_entry *iter;
@@ -217,10 +216,10 @@ static void perf_session__insert_output_hist_entry(struct rb_root *root,
}
rb_link_node(&he->rb_node, parent, p);
- rb_insert_color(&he->rb_node, root);
+ rb_insert_color(&he->rb_node, entries);
}
-u64 perf_session__output_resort(struct rb_root *hists, u64 total_samples)
+u64 hists__output_resort(struct hists *self)
{
struct rb_root tmp;
struct rb_node *next;
@@ -228,23 +227,21 @@ u64 perf_session__output_resort(struct rb_root *hists, u64 total_samples)
u64 min_callchain_hits;
u64 nr_hists = 0;
- min_callchain_hits =
- total_samples * (callchain_param.min_percent / 100);
+ min_callchain_hits = self->stats.total * (callchain_param.min_percent / 100);
tmp = RB_ROOT;
- next = rb_first(hists);
+ next = rb_first(&self->entries);
while (next) {
n = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&n->rb_node);
- rb_erase(&n->rb_node, hists);
- perf_session__insert_output_hist_entry(&tmp, n,
- min_callchain_hits);
+ rb_erase(&n->rb_node, &self->entries);
+ __hists__insert_output_entry(&tmp, n, min_callchain_hits);
++nr_hists;
}
- *hists = tmp;
+ self->entries = tmp;
return nr_hists;
}
@@ -500,12 +497,9 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
return ret;
}
-int hist_entry__snprintf(struct hist_entry *self,
- char *s, size_t size,
- struct perf_session *pair_session,
- bool show_displacement,
- long displacement, bool color,
- u64 session_total)
+int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
+ struct hists *pair_hists, bool show_displacement,
+ long displacement, bool color, u64 session_total)
{
struct sort_entry *se;
u64 count, total, count_sys, count_us, count_guest_sys, count_guest_us;
@@ -515,9 +509,9 @@ int hist_entry__snprintf(struct hist_entry *self,
if (symbol_conf.exclude_other && !self->parent)
return 0;
- if (pair_session) {
+ if (pair_hists) {
count = self->pair ? self->pair->count : 0;
- total = pair_session->events_stats.total;
+ total = pair_hists->stats.total;
count_sys = self->pair ? self->pair->count_sys : 0;
count_us = self->pair ? self->pair->count_us : 0;
count_guest_sys = self->pair ? self->pair->count_guest_sys : 0;
@@ -569,7 +563,7 @@ int hist_entry__snprintf(struct hist_entry *self,
ret += snprintf(s + ret, size - ret, "%11lld", count);
}
- if (pair_session) {
+ if (pair_hists) {
char bf[32];
double old_percent = 0, new_percent = 0, diff;
@@ -615,14 +609,12 @@ int hist_entry__snprintf(struct hist_entry *self,
return ret;
}
-int hist_entry__fprintf(struct hist_entry *self,
- struct perf_session *pair_session,
- bool show_displacement,
- long displacement, FILE *fp,
+int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists,
+ bool show_displacement, long displacement, FILE *fp,
u64 session_total)
{
char bf[512];
- hist_entry__snprintf(self, bf, sizeof(bf), pair_session,
+ hist_entry__snprintf(self, bf, sizeof(bf), pair_hists,
show_displacement, displacement,
true, session_total);
return fprintf(fp, "%s\n", bf);
@@ -644,10 +636,8 @@ static size_t hist_entry__fprintf_callchain(struct hist_entry *self, FILE *fp,
left_margin);
}
-size_t perf_session__fprintf_hists(struct rb_root *hists,
- struct perf_session *pair,
- bool show_displacement, FILE *fp,
- u64 session_total)
+size_t hists__fprintf(struct hists *self, struct hists *pair,
+ bool show_displacement, FILE *fp)
{
struct sort_entry *se;
struct rb_node *nd;
@@ -753,7 +743,7 @@ size_t perf_session__fprintf_hists(struct rb_root *hists,
fprintf(fp, "\n#\n");
print_entries:
- for (nd = rb_first(hists); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
if (show_displacement) {
@@ -765,10 +755,10 @@ print_entries:
++position;
}
ret += hist_entry__fprintf(h, pair, show_displacement,
- displacement, fp, session_total);
+ displacement, fp, self->stats.total);
if (symbol_conf.use_callchain)
- ret += hist_entry__fprintf_callchain(h, fp, session_total);
+ ret += hist_entry__fprintf_callchain(h, fp, self->stats.total);
if (h->ms.map == NULL && verbose > 1) {
__map_groups__fprintf_maps(&h->thread->mg,
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index b49013a..bdde81e 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -6,34 +6,40 @@
extern struct callchain_param callchain_param;
-struct perf_session;
struct hist_entry;
struct addr_location;
struct symbol;
struct rb_root;
-struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
- struct addr_location *al,
- struct symbol *parent,
- u64 count);
+struct events_stats {
+ u64 total;
+ u64 lost;
+};
+
+struct hists {
+ struct rb_node rb_node;
+ struct rb_root entries;
+ struct events_stats stats;
+ u64 config;
+ u64 event_stream;
+ u32 type;
+};
+
+struct hist_entry *__hists__add_entry(struct hists *self,
+ struct addr_location *al,
+ struct symbol *parent, u64 count);
extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
-int hist_entry__fprintf(struct hist_entry *self,
- struct perf_session *pair_session,
- bool show_displacement,
- long displacement, FILE *fp,
- u64 session_total);
-int hist_entry__snprintf(struct hist_entry *self,
- char *bf, size_t size,
- struct perf_session *pair_session,
- bool show_displacement, long displacement,
- bool color, u64 session_total);
+int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists,
+ bool show_displacement, long displacement, FILE *fp,
+ u64 total);
+int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
+ struct hists *pair_hists, bool show_displacement,
+ long displacement, bool color, u64 total);
void hist_entry__free(struct hist_entry *);
-u64 perf_session__output_resort(struct rb_root *hists, u64 total_samples);
-void perf_session__collapse_resort(struct rb_root *hists);
-size_t perf_session__fprintf_hists(struct rb_root *hists,
- struct perf_session *pair,
- bool show_displacement, FILE *fp,
- u64 session_total);
+u64 hists__output_resort(struct hists *self);
+void hists__collapse_resort(struct hists *self);
+size_t hists__fprintf(struct hists *self, struct hists *pair,
+ bool show_displacement, FILE *fp);
#endif /* __PERF_HIST_H */
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 4130036..72a7f6a 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -89,7 +89,7 @@ struct perf_session *perf_session__new(const char *filename, int mode, bool forc
memcpy(self->filename, filename, len);
self->threads = RB_ROOT;
- self->stats_by_id = RB_ROOT;
+ self->hists_tree = RB_ROOT;
self->last_match = NULL;
self->mmap_window = 32;
self->cwd = NULL;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 242d528..46190f9 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -1,6 +1,7 @@
#ifndef __PERF_SESSION_H
#define __PERF_SESSION_H
+#include "hist.h"
#include "event.h"
#include "header.h"
#include "symbol.h"
@@ -28,11 +29,16 @@ struct perf_session {
struct thread *last_match;
struct machine host_machine;
struct rb_root machines;
- struct events_stats events_stats;
- struct rb_root stats_by_id;
+ struct rb_root hists_tree;
unsigned long event_total[PERF_RECORD_MAX];
unsigned long unknown_events;
- struct rb_root hists;
+ /*
+ * FIXME: should point to the first entry in hists_tree and
+ * be a hists instance. Right now its only 'report'
+ * that is using ->hists_tree while all the rest use
+ * ->hists.
+ */
+ struct hists hists;
u64 sample_type;
int fd;
bool fd_pipe;
--
1.6.2.5
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