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perf hist: Introduce hists class and move lots of methods to it

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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2010-05-10 13:04:11 -03:00
parent d118f8ba6a
commit 1c02c4d2e9
10 changed files with 146 additions and 164 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
tools/perf/builtin-annotate.c
View File

@ -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);

50
tools/perf/builtin-diff.c
View File

@ -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]);

71
tools/perf/builtin-report.c
View File

@ -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 &&

2
tools/perf/builtin-trace.c
View File

@ -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;
}

2
tools/perf/util/event.c
View File

@ -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;
}

14
tools/perf/util/event.h
View File

@ -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;

92
tools/perf/util/hist.c
View File

@ -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 @@ size_t perf_session__fprintf_hists(struct rb_root *hists,
++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,

48
tools/perf/util/hist.h
View File

@ -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 */

2
tools/perf/util/session.c
View File

@ -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;

12
tools/perf/util/session.h
View File

@ -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;