![Namhyung Kim](/assets/img/avatar_default.png)
To support callchain accumulation, @entry should be recognized if it's accumulated or not when add_hist_entry() called. The period of an accumulated entry should be added to ->stat_acc but not ->stat. Add @sample_self arg for that. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arun Sharma <asharma@fb.com> Tested-by: Rodrigo Campos <rodrigo@sdfg.com.ar> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1401335910-16832-5-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org>
1165 lines
26 KiB
C
1165 lines
26 KiB
C
/*
|
|
* builtin-diff.c
|
|
*
|
|
* Builtin diff command: Analyze two perf.data input files, look up and read
|
|
* DSOs and symbol information, sort them and produce a diff.
|
|
*/
|
|
#include "builtin.h"
|
|
|
|
#include "util/debug.h"
|
|
#include "util/event.h"
|
|
#include "util/hist.h"
|
|
#include "util/evsel.h"
|
|
#include "util/evlist.h"
|
|
#include "util/session.h"
|
|
#include "util/tool.h"
|
|
#include "util/sort.h"
|
|
#include "util/symbol.h"
|
|
#include "util/util.h"
|
|
#include "util/data.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
|
|
/* Diff command specific HPP columns. */
|
|
enum {
|
|
PERF_HPP_DIFF__BASELINE,
|
|
PERF_HPP_DIFF__PERIOD,
|
|
PERF_HPP_DIFF__PERIOD_BASELINE,
|
|
PERF_HPP_DIFF__DELTA,
|
|
PERF_HPP_DIFF__RATIO,
|
|
PERF_HPP_DIFF__WEIGHTED_DIFF,
|
|
PERF_HPP_DIFF__FORMULA,
|
|
|
|
PERF_HPP_DIFF__MAX_INDEX
|
|
};
|
|
|
|
struct diff_hpp_fmt {
|
|
struct perf_hpp_fmt fmt;
|
|
int idx;
|
|
char *header;
|
|
int header_width;
|
|
};
|
|
|
|
struct data__file {
|
|
struct perf_session *session;
|
|
struct perf_data_file file;
|
|
int idx;
|
|
struct hists *hists;
|
|
struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
|
|
};
|
|
|
|
static struct data__file *data__files;
|
|
static int data__files_cnt;
|
|
|
|
#define data__for_each_file_start(i, d, s) \
|
|
for (i = s, d = &data__files[s]; \
|
|
i < data__files_cnt; \
|
|
i++, d = &data__files[i])
|
|
|
|
#define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
|
|
#define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
|
|
|
|
static bool force;
|
|
static bool show_period;
|
|
static bool show_formula;
|
|
static bool show_baseline_only;
|
|
static unsigned int sort_compute;
|
|
|
|
static s64 compute_wdiff_w1;
|
|
static s64 compute_wdiff_w2;
|
|
|
|
enum {
|
|
COMPUTE_DELTA,
|
|
COMPUTE_RATIO,
|
|
COMPUTE_WEIGHTED_DIFF,
|
|
COMPUTE_MAX,
|
|
};
|
|
|
|
const char *compute_names[COMPUTE_MAX] = {
|
|
[COMPUTE_DELTA] = "delta",
|
|
[COMPUTE_RATIO] = "ratio",
|
|
[COMPUTE_WEIGHTED_DIFF] = "wdiff",
|
|
};
|
|
|
|
static int compute;
|
|
|
|
static int compute_2_hpp[COMPUTE_MAX] = {
|
|
[COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
|
|
[COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
|
|
[COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
|
|
};
|
|
|
|
#define MAX_COL_WIDTH 70
|
|
|
|
static struct header_column {
|
|
const char *name;
|
|
int width;
|
|
} columns[PERF_HPP_DIFF__MAX_INDEX] = {
|
|
[PERF_HPP_DIFF__BASELINE] = {
|
|
.name = "Baseline",
|
|
},
|
|
[PERF_HPP_DIFF__PERIOD] = {
|
|
.name = "Period",
|
|
.width = 14,
|
|
},
|
|
[PERF_HPP_DIFF__PERIOD_BASELINE] = {
|
|
.name = "Base period",
|
|
.width = 14,
|
|
},
|
|
[PERF_HPP_DIFF__DELTA] = {
|
|
.name = "Delta",
|
|
.width = 7,
|
|
},
|
|
[PERF_HPP_DIFF__RATIO] = {
|
|
.name = "Ratio",
|
|
.width = 14,
|
|
},
|
|
[PERF_HPP_DIFF__WEIGHTED_DIFF] = {
|
|
.name = "Weighted diff",
|
|
.width = 14,
|
|
},
|
|
[PERF_HPP_DIFF__FORMULA] = {
|
|
.name = "Formula",
|
|
.width = MAX_COL_WIDTH,
|
|
}
|
|
};
|
|
|
|
static int setup_compute_opt_wdiff(char *opt)
|
|
{
|
|
char *w1_str = opt;
|
|
char *w2_str;
|
|
|
|
int ret = -EINVAL;
|
|
|
|
if (!opt)
|
|
goto out;
|
|
|
|
w2_str = strchr(opt, ',');
|
|
if (!w2_str)
|
|
goto out;
|
|
|
|
*w2_str++ = 0x0;
|
|
if (!*w2_str)
|
|
goto out;
|
|
|
|
compute_wdiff_w1 = strtol(w1_str, NULL, 10);
|
|
compute_wdiff_w2 = strtol(w2_str, NULL, 10);
|
|
|
|
if (!compute_wdiff_w1 || !compute_wdiff_w2)
|
|
goto out;
|
|
|
|
pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
|
|
compute_wdiff_w1, compute_wdiff_w2);
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
if (ret)
|
|
pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int setup_compute_opt(char *opt)
|
|
{
|
|
if (compute == COMPUTE_WEIGHTED_DIFF)
|
|
return setup_compute_opt_wdiff(opt);
|
|
|
|
if (opt) {
|
|
pr_err("Failed: extra option specified '%s'", opt);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int setup_compute(const struct option *opt, const char *str,
|
|
int unset __maybe_unused)
|
|
{
|
|
int *cp = (int *) opt->value;
|
|
char *cstr = (char *) str;
|
|
char buf[50];
|
|
unsigned i;
|
|
char *option;
|
|
|
|
if (!str) {
|
|
*cp = COMPUTE_DELTA;
|
|
return 0;
|
|
}
|
|
|
|
option = strchr(str, ':');
|
|
if (option) {
|
|
unsigned len = option++ - str;
|
|
|
|
/*
|
|
* The str data are not writeable, so we need
|
|
* to use another buffer.
|
|
*/
|
|
|
|
/* No option value is longer. */
|
|
if (len >= sizeof(buf))
|
|
return -EINVAL;
|
|
|
|
strncpy(buf, str, len);
|
|
buf[len] = 0x0;
|
|
cstr = buf;
|
|
}
|
|
|
|
for (i = 0; i < COMPUTE_MAX; i++)
|
|
if (!strcmp(cstr, compute_names[i])) {
|
|
*cp = i;
|
|
return setup_compute_opt(option);
|
|
}
|
|
|
|
pr_err("Failed: '%s' is not computation method "
|
|
"(use 'delta','ratio' or 'wdiff')\n", str);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static double period_percent(struct hist_entry *he, u64 period)
|
|
{
|
|
u64 total = hists__total_period(he->hists);
|
|
|
|
return (period * 100.0) / total;
|
|
}
|
|
|
|
static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
|
|
{
|
|
double old_percent = period_percent(he, he->stat.period);
|
|
double new_percent = period_percent(pair, pair->stat.period);
|
|
|
|
pair->diff.period_ratio_delta = new_percent - old_percent;
|
|
pair->diff.computed = true;
|
|
return pair->diff.period_ratio_delta;
|
|
}
|
|
|
|
static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
|
|
{
|
|
double old_period = he->stat.period ?: 1;
|
|
double new_period = pair->stat.period;
|
|
|
|
pair->diff.computed = true;
|
|
pair->diff.period_ratio = new_period / old_period;
|
|
return pair->diff.period_ratio;
|
|
}
|
|
|
|
static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
|
|
{
|
|
u64 old_period = he->stat.period;
|
|
u64 new_period = pair->stat.period;
|
|
|
|
pair->diff.computed = true;
|
|
pair->diff.wdiff = new_period * compute_wdiff_w2 -
|
|
old_period * compute_wdiff_w1;
|
|
|
|
return pair->diff.wdiff;
|
|
}
|
|
|
|
static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
|
|
char *buf, size_t size)
|
|
{
|
|
u64 he_total = he->hists->stats.total_period;
|
|
u64 pair_total = pair->hists->stats.total_period;
|
|
|
|
if (symbol_conf.filter_relative) {
|
|
he_total = he->hists->stats.total_non_filtered_period;
|
|
pair_total = pair->hists->stats.total_non_filtered_period;
|
|
}
|
|
return scnprintf(buf, size,
|
|
"(%" PRIu64 " * 100 / %" PRIu64 ") - "
|
|
"(%" PRIu64 " * 100 / %" PRIu64 ")",
|
|
pair->stat.period, pair_total,
|
|
he->stat.period, he_total);
|
|
}
|
|
|
|
static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
|
|
char *buf, size_t size)
|
|
{
|
|
double old_period = he->stat.period;
|
|
double new_period = pair->stat.period;
|
|
|
|
return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
|
|
}
|
|
|
|
static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
|
|
char *buf, size_t size)
|
|
{
|
|
u64 old_period = he->stat.period;
|
|
u64 new_period = pair->stat.period;
|
|
|
|
return scnprintf(buf, size,
|
|
"(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
|
|
new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
|
|
}
|
|
|
|
static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
|
|
char *buf, size_t size)
|
|
{
|
|
switch (compute) {
|
|
case COMPUTE_DELTA:
|
|
return formula_delta(he, pair, buf, size);
|
|
case COMPUTE_RATIO:
|
|
return formula_ratio(he, pair, buf, size);
|
|
case COMPUTE_WEIGHTED_DIFF:
|
|
return formula_wdiff(he, pair, buf, size);
|
|
default:
|
|
BUG_ON(1);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int hists__add_entry(struct hists *hists,
|
|
struct addr_location *al, u64 period,
|
|
u64 weight, u64 transaction)
|
|
{
|
|
if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight,
|
|
transaction, true) != NULL)
|
|
return 0;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct perf_evsel *evsel,
|
|
struct machine *machine)
|
|
{
|
|
struct addr_location al;
|
|
|
|
if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
|
|
pr_warning("problem processing %d event, skipping it.\n",
|
|
event->header.type);
|
|
return -1;
|
|
}
|
|
|
|
if (hists__add_entry(&evsel->hists, &al, sample->period,
|
|
sample->weight, sample->transaction)) {
|
|
pr_warning("problem incrementing symbol period, skipping event\n");
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* The total_period is updated here before going to the output
|
|
* tree since normally only the baseline hists will call
|
|
* hists__output_resort() and precompute needs the total
|
|
* period in order to sort entries by percentage delta.
|
|
*/
|
|
evsel->hists.stats.total_period += sample->period;
|
|
if (!al.filtered)
|
|
evsel->hists.stats.total_non_filtered_period += sample->period;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct perf_tool tool = {
|
|
.sample = diff__process_sample_event,
|
|
.mmap = perf_event__process_mmap,
|
|
.comm = perf_event__process_comm,
|
|
.exit = perf_event__process_exit,
|
|
.fork = perf_event__process_fork,
|
|
.lost = perf_event__process_lost,
|
|
.ordered_samples = true,
|
|
.ordering_requires_timestamps = true,
|
|
};
|
|
|
|
static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
|
|
struct perf_evlist *evlist)
|
|
{
|
|
struct perf_evsel *e;
|
|
|
|
evlist__for_each(evlist, e) {
|
|
if (perf_evsel__match2(evsel, e))
|
|
return e;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
|
|
{
|
|
struct perf_evsel *evsel;
|
|
|
|
evlist__for_each(evlist, evsel) {
|
|
struct hists *hists = &evsel->hists;
|
|
|
|
hists__collapse_resort(hists, NULL);
|
|
}
|
|
}
|
|
|
|
static struct hist_entry*
|
|
get_pair_data(struct hist_entry *he, struct data__file *d)
|
|
{
|
|
if (hist_entry__has_pairs(he)) {
|
|
struct hist_entry *pair;
|
|
|
|
list_for_each_entry(pair, &he->pairs.head, pairs.node)
|
|
if (pair->hists == d->hists)
|
|
return pair;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct hist_entry*
|
|
get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
|
|
{
|
|
void *ptr = dfmt - dfmt->idx;
|
|
struct data__file *d = container_of(ptr, struct data__file, fmt);
|
|
|
|
return get_pair_data(he, d);
|
|
}
|
|
|
|
static void hists__baseline_only(struct hists *hists)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
|
|
if (sort__need_collapse)
|
|
root = &hists->entries_collapsed;
|
|
else
|
|
root = hists->entries_in;
|
|
|
|
next = rb_first(root);
|
|
while (next != NULL) {
|
|
struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
|
|
|
|
next = rb_next(&he->rb_node_in);
|
|
if (!hist_entry__next_pair(he)) {
|
|
rb_erase(&he->rb_node_in, root);
|
|
hist_entry__free(he);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hists__precompute(struct hists *hists)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
|
|
if (sort__need_collapse)
|
|
root = &hists->entries_collapsed;
|
|
else
|
|
root = hists->entries_in;
|
|
|
|
next = rb_first(root);
|
|
while (next != NULL) {
|
|
struct hist_entry *he, *pair;
|
|
|
|
he = rb_entry(next, struct hist_entry, rb_node_in);
|
|
next = rb_next(&he->rb_node_in);
|
|
|
|
pair = get_pair_data(he, &data__files[sort_compute]);
|
|
if (!pair)
|
|
continue;
|
|
|
|
switch (compute) {
|
|
case COMPUTE_DELTA:
|
|
compute_delta(he, pair);
|
|
break;
|
|
case COMPUTE_RATIO:
|
|
compute_ratio(he, pair);
|
|
break;
|
|
case COMPUTE_WEIGHTED_DIFF:
|
|
compute_wdiff(he, pair);
|
|
break;
|
|
default:
|
|
BUG_ON(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int64_t cmp_doubles(double l, double r)
|
|
{
|
|
if (l > r)
|
|
return -1;
|
|
else if (l < r)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int64_t
|
|
__hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
|
|
int c)
|
|
{
|
|
switch (c) {
|
|
case COMPUTE_DELTA:
|
|
{
|
|
double l = left->diff.period_ratio_delta;
|
|
double r = right->diff.period_ratio_delta;
|
|
|
|
return cmp_doubles(l, r);
|
|
}
|
|
case COMPUTE_RATIO:
|
|
{
|
|
double l = left->diff.period_ratio;
|
|
double r = right->diff.period_ratio;
|
|
|
|
return cmp_doubles(l, r);
|
|
}
|
|
case COMPUTE_WEIGHTED_DIFF:
|
|
{
|
|
s64 l = left->diff.wdiff;
|
|
s64 r = right->diff.wdiff;
|
|
|
|
return r - l;
|
|
}
|
|
default:
|
|
BUG_ON(1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int64_t
|
|
hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
|
|
int c)
|
|
{
|
|
bool pairs_left = hist_entry__has_pairs(left);
|
|
bool pairs_right = hist_entry__has_pairs(right);
|
|
struct hist_entry *p_right, *p_left;
|
|
|
|
if (!pairs_left && !pairs_right)
|
|
return 0;
|
|
|
|
if (!pairs_left || !pairs_right)
|
|
return pairs_left ? -1 : 1;
|
|
|
|
p_left = get_pair_data(left, &data__files[sort_compute]);
|
|
p_right = get_pair_data(right, &data__files[sort_compute]);
|
|
|
|
if (!p_left && !p_right)
|
|
return 0;
|
|
|
|
if (!p_left || !p_right)
|
|
return p_left ? -1 : 1;
|
|
|
|
/*
|
|
* We have 2 entries of same kind, let's
|
|
* make the data comparison.
|
|
*/
|
|
return __hist_entry__cmp_compute(p_left, p_right, c);
|
|
}
|
|
|
|
static void insert_hist_entry_by_compute(struct rb_root *root,
|
|
struct hist_entry *he,
|
|
int c)
|
|
{
|
|
struct rb_node **p = &root->rb_node;
|
|
struct rb_node *parent = NULL;
|
|
struct hist_entry *iter;
|
|
|
|
while (*p != NULL) {
|
|
parent = *p;
|
|
iter = rb_entry(parent, struct hist_entry, rb_node);
|
|
if (hist_entry__cmp_compute(he, iter, c) < 0)
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
|
|
rb_link_node(&he->rb_node, parent, p);
|
|
rb_insert_color(&he->rb_node, root);
|
|
}
|
|
|
|
static void hists__compute_resort(struct hists *hists)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
|
|
if (sort__need_collapse)
|
|
root = &hists->entries_collapsed;
|
|
else
|
|
root = hists->entries_in;
|
|
|
|
hists->entries = RB_ROOT;
|
|
next = rb_first(root);
|
|
|
|
hists__reset_stats(hists);
|
|
hists__reset_col_len(hists);
|
|
|
|
while (next != NULL) {
|
|
struct hist_entry *he;
|
|
|
|
he = rb_entry(next, struct hist_entry, rb_node_in);
|
|
next = rb_next(&he->rb_node_in);
|
|
|
|
insert_hist_entry_by_compute(&hists->entries, he, compute);
|
|
hists__inc_stats(hists, he);
|
|
|
|
if (!he->filtered)
|
|
hists__calc_col_len(hists, he);
|
|
}
|
|
}
|
|
|
|
static void hists__process(struct hists *hists)
|
|
{
|
|
if (show_baseline_only)
|
|
hists__baseline_only(hists);
|
|
|
|
if (sort_compute) {
|
|
hists__precompute(hists);
|
|
hists__compute_resort(hists);
|
|
} else {
|
|
hists__output_resort(hists);
|
|
}
|
|
|
|
hists__fprintf(hists, true, 0, 0, 0, stdout);
|
|
}
|
|
|
|
static void data__fprintf(void)
|
|
{
|
|
struct data__file *d;
|
|
int i;
|
|
|
|
fprintf(stdout, "# Data files:\n");
|
|
|
|
data__for_each_file(i, d)
|
|
fprintf(stdout, "# [%d] %s %s\n",
|
|
d->idx, d->file.path,
|
|
!d->idx ? "(Baseline)" : "");
|
|
|
|
fprintf(stdout, "#\n");
|
|
}
|
|
|
|
static void data_process(void)
|
|
{
|
|
struct perf_evlist *evlist_base = data__files[0].session->evlist;
|
|
struct perf_evsel *evsel_base;
|
|
bool first = true;
|
|
|
|
evlist__for_each(evlist_base, evsel_base) {
|
|
struct data__file *d;
|
|
int i;
|
|
|
|
data__for_each_file_new(i, d) {
|
|
struct perf_evlist *evlist = d->session->evlist;
|
|
struct perf_evsel *evsel;
|
|
|
|
evsel = evsel_match(evsel_base, evlist);
|
|
if (!evsel)
|
|
continue;
|
|
|
|
d->hists = &evsel->hists;
|
|
|
|
hists__match(&evsel_base->hists, &evsel->hists);
|
|
|
|
if (!show_baseline_only)
|
|
hists__link(&evsel_base->hists,
|
|
&evsel->hists);
|
|
}
|
|
|
|
fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
|
|
perf_evsel__name(evsel_base));
|
|
|
|
first = false;
|
|
|
|
if (verbose || data__files_cnt > 2)
|
|
data__fprintf();
|
|
|
|
hists__process(&evsel_base->hists);
|
|
}
|
|
}
|
|
|
|
static void data__free(struct data__file *d)
|
|
{
|
|
int col;
|
|
|
|
for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
|
|
struct diff_hpp_fmt *fmt = &d->fmt[col];
|
|
|
|
zfree(&fmt->header);
|
|
}
|
|
}
|
|
|
|
static int __cmd_diff(void)
|
|
{
|
|
struct data__file *d;
|
|
int ret = -EINVAL, i;
|
|
|
|
data__for_each_file(i, d) {
|
|
d->session = perf_session__new(&d->file, false, &tool);
|
|
if (!d->session) {
|
|
pr_err("Failed to open %s\n", d->file.path);
|
|
ret = -ENOMEM;
|
|
goto out_delete;
|
|
}
|
|
|
|
ret = perf_session__process_events(d->session, &tool);
|
|
if (ret) {
|
|
pr_err("Failed to process %s\n", d->file.path);
|
|
goto out_delete;
|
|
}
|
|
|
|
perf_evlist__collapse_resort(d->session->evlist);
|
|
}
|
|
|
|
data_process();
|
|
|
|
out_delete:
|
|
data__for_each_file(i, d) {
|
|
if (d->session)
|
|
perf_session__delete(d->session);
|
|
|
|
data__free(d);
|
|
}
|
|
|
|
free(data__files);
|
|
return ret;
|
|
}
|
|
|
|
static const char * const diff_usage[] = {
|
|
"perf diff [<options>] [old_file] [new_file]",
|
|
NULL,
|
|
};
|
|
|
|
static const struct option options[] = {
|
|
OPT_INCR('v', "verbose", &verbose,
|
|
"be more verbose (show symbol address, etc)"),
|
|
OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
|
|
"Show only items with match in baseline"),
|
|
OPT_CALLBACK('c', "compute", &compute,
|
|
"delta,ratio,wdiff:w1,w2 (default delta)",
|
|
"Entries differential computation selection",
|
|
setup_compute),
|
|
OPT_BOOLEAN('p', "period", &show_period,
|
|
"Show period values."),
|
|
OPT_BOOLEAN('F', "formula", &show_formula,
|
|
"Show formula."),
|
|
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
|
|
"dump raw trace in ASCII"),
|
|
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
|
|
OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
|
|
"load module symbols - WARNING: use only with -k and LIVE kernel"),
|
|
OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
|
|
"only consider symbols in these dsos"),
|
|
OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
|
|
"only consider symbols in these comms"),
|
|
OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
|
|
"only consider these symbols"),
|
|
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
|
|
"sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
|
|
" Please refer the man page for the complete list."),
|
|
OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
|
|
"separator for columns, no spaces will be added between "
|
|
"columns '.' is reserved."),
|
|
OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
|
|
"Look for files with symbols relative to this directory"),
|
|
OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
|
|
OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
|
|
"How to display percentage of filtered entries", parse_filter_percentage),
|
|
OPT_END()
|
|
};
|
|
|
|
static double baseline_percent(struct hist_entry *he)
|
|
{
|
|
u64 total = hists__total_period(he->hists);
|
|
|
|
return 100.0 * he->stat.period / total;
|
|
}
|
|
|
|
static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
|
|
struct perf_hpp *hpp, struct hist_entry *he)
|
|
{
|
|
struct diff_hpp_fmt *dfmt =
|
|
container_of(fmt, struct diff_hpp_fmt, fmt);
|
|
double percent = baseline_percent(he);
|
|
char pfmt[20] = " ";
|
|
|
|
if (!he->dummy) {
|
|
scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
|
|
return percent_color_snprintf(hpp->buf, hpp->size,
|
|
pfmt, percent);
|
|
} else
|
|
return scnprintf(hpp->buf, hpp->size, "%*s",
|
|
dfmt->header_width, pfmt);
|
|
}
|
|
|
|
static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
|
|
{
|
|
double percent = baseline_percent(he);
|
|
const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
|
|
int ret = 0;
|
|
|
|
if (!he->dummy)
|
|
ret = scnprintf(buf, size, fmt, percent);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
|
|
struct perf_hpp *hpp, struct hist_entry *he,
|
|
int comparison_method)
|
|
{
|
|
struct diff_hpp_fmt *dfmt =
|
|
container_of(fmt, struct diff_hpp_fmt, fmt);
|
|
struct hist_entry *pair = get_pair_fmt(he, dfmt);
|
|
double diff;
|
|
s64 wdiff;
|
|
char pfmt[20] = " ";
|
|
|
|
if (!pair)
|
|
goto dummy_print;
|
|
|
|
switch (comparison_method) {
|
|
case COMPUTE_DELTA:
|
|
if (pair->diff.computed)
|
|
diff = pair->diff.period_ratio_delta;
|
|
else
|
|
diff = compute_delta(he, pair);
|
|
|
|
if (fabs(diff) < 0.01)
|
|
goto dummy_print;
|
|
scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
|
|
return percent_color_snprintf(hpp->buf, hpp->size,
|
|
pfmt, diff);
|
|
case COMPUTE_RATIO:
|
|
if (he->dummy)
|
|
goto dummy_print;
|
|
if (pair->diff.computed)
|
|
diff = pair->diff.period_ratio;
|
|
else
|
|
diff = compute_ratio(he, pair);
|
|
|
|
scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
|
|
return value_color_snprintf(hpp->buf, hpp->size,
|
|
pfmt, diff);
|
|
case COMPUTE_WEIGHTED_DIFF:
|
|
if (he->dummy)
|
|
goto dummy_print;
|
|
if (pair->diff.computed)
|
|
wdiff = pair->diff.wdiff;
|
|
else
|
|
wdiff = compute_wdiff(he, pair);
|
|
|
|
scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
|
|
return color_snprintf(hpp->buf, hpp->size,
|
|
get_percent_color(wdiff),
|
|
pfmt, wdiff);
|
|
default:
|
|
BUG_ON(1);
|
|
}
|
|
dummy_print:
|
|
return scnprintf(hpp->buf, hpp->size, "%*s",
|
|
dfmt->header_width, pfmt);
|
|
}
|
|
|
|
static int hpp__color_delta(struct perf_hpp_fmt *fmt,
|
|
struct perf_hpp *hpp, struct hist_entry *he)
|
|
{
|
|
return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
|
|
}
|
|
|
|
static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
|
|
struct perf_hpp *hpp, struct hist_entry *he)
|
|
{
|
|
return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
|
|
}
|
|
|
|
static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
|
|
struct perf_hpp *hpp, struct hist_entry *he)
|
|
{
|
|
return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
|
|
}
|
|
|
|
static void
|
|
hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
|
|
{
|
|
switch (idx) {
|
|
case PERF_HPP_DIFF__PERIOD_BASELINE:
|
|
scnprintf(buf, size, "%" PRIu64, he->stat.period);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
|
|
int idx, char *buf, size_t size)
|
|
{
|
|
double diff;
|
|
double ratio;
|
|
s64 wdiff;
|
|
|
|
switch (idx) {
|
|
case PERF_HPP_DIFF__DELTA:
|
|
if (pair->diff.computed)
|
|
diff = pair->diff.period_ratio_delta;
|
|
else
|
|
diff = compute_delta(he, pair);
|
|
|
|
if (fabs(diff) >= 0.01)
|
|
scnprintf(buf, size, "%+4.2F%%", diff);
|
|
break;
|
|
|
|
case PERF_HPP_DIFF__RATIO:
|
|
/* No point for ratio number if we are dummy.. */
|
|
if (he->dummy)
|
|
break;
|
|
|
|
if (pair->diff.computed)
|
|
ratio = pair->diff.period_ratio;
|
|
else
|
|
ratio = compute_ratio(he, pair);
|
|
|
|
if (ratio > 0.0)
|
|
scnprintf(buf, size, "%14.6F", ratio);
|
|
break;
|
|
|
|
case PERF_HPP_DIFF__WEIGHTED_DIFF:
|
|
/* No point for wdiff number if we are dummy.. */
|
|
if (he->dummy)
|
|
break;
|
|
|
|
if (pair->diff.computed)
|
|
wdiff = pair->diff.wdiff;
|
|
else
|
|
wdiff = compute_wdiff(he, pair);
|
|
|
|
if (wdiff != 0)
|
|
scnprintf(buf, size, "%14ld", wdiff);
|
|
break;
|
|
|
|
case PERF_HPP_DIFF__FORMULA:
|
|
formula_fprintf(he, pair, buf, size);
|
|
break;
|
|
|
|
case PERF_HPP_DIFF__PERIOD:
|
|
scnprintf(buf, size, "%" PRIu64, pair->stat.period);
|
|
break;
|
|
|
|
default:
|
|
BUG_ON(1);
|
|
};
|
|
}
|
|
|
|
static void
|
|
__hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
|
|
char *buf, size_t size)
|
|
{
|
|
struct hist_entry *pair = get_pair_fmt(he, dfmt);
|
|
int idx = dfmt->idx;
|
|
|
|
/* baseline is special */
|
|
if (idx == PERF_HPP_DIFF__BASELINE)
|
|
hpp__entry_baseline(he, buf, size);
|
|
else {
|
|
if (pair)
|
|
hpp__entry_pair(he, pair, idx, buf, size);
|
|
else
|
|
hpp__entry_unpair(he, idx, buf, size);
|
|
}
|
|
}
|
|
|
|
static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
|
|
struct hist_entry *he)
|
|
{
|
|
struct diff_hpp_fmt *dfmt =
|
|
container_of(_fmt, struct diff_hpp_fmt, fmt);
|
|
char buf[MAX_COL_WIDTH] = " ";
|
|
|
|
__hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
|
|
|
|
if (symbol_conf.field_sep)
|
|
return scnprintf(hpp->buf, hpp->size, "%s", buf);
|
|
else
|
|
return scnprintf(hpp->buf, hpp->size, "%*s",
|
|
dfmt->header_width, buf);
|
|
}
|
|
|
|
static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
|
|
struct perf_evsel *evsel __maybe_unused)
|
|
{
|
|
struct diff_hpp_fmt *dfmt =
|
|
container_of(fmt, struct diff_hpp_fmt, fmt);
|
|
|
|
BUG_ON(!dfmt->header);
|
|
return scnprintf(hpp->buf, hpp->size, dfmt->header);
|
|
}
|
|
|
|
static int hpp__width(struct perf_hpp_fmt *fmt,
|
|
struct perf_hpp *hpp __maybe_unused,
|
|
struct perf_evsel *evsel __maybe_unused)
|
|
{
|
|
struct diff_hpp_fmt *dfmt =
|
|
container_of(fmt, struct diff_hpp_fmt, fmt);
|
|
|
|
BUG_ON(dfmt->header_width <= 0);
|
|
return dfmt->header_width;
|
|
}
|
|
|
|
static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
|
|
{
|
|
#define MAX_HEADER_NAME 100
|
|
char buf_indent[MAX_HEADER_NAME];
|
|
char buf[MAX_HEADER_NAME];
|
|
const char *header = NULL;
|
|
int width = 0;
|
|
|
|
BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
|
|
header = columns[dfmt->idx].name;
|
|
width = columns[dfmt->idx].width;
|
|
|
|
/* Only our defined HPP fmts should appear here. */
|
|
BUG_ON(!header);
|
|
|
|
if (data__files_cnt > 2)
|
|
scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
|
|
|
|
#define NAME (data__files_cnt > 2 ? buf : header)
|
|
dfmt->header_width = width;
|
|
width = (int) strlen(NAME);
|
|
if (dfmt->header_width < width)
|
|
dfmt->header_width = width;
|
|
|
|
scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
|
|
dfmt->header_width, NAME);
|
|
|
|
dfmt->header = strdup(buf_indent);
|
|
#undef MAX_HEADER_NAME
|
|
#undef NAME
|
|
}
|
|
|
|
static void data__hpp_register(struct data__file *d, int idx)
|
|
{
|
|
struct diff_hpp_fmt *dfmt = &d->fmt[idx];
|
|
struct perf_hpp_fmt *fmt = &dfmt->fmt;
|
|
|
|
dfmt->idx = idx;
|
|
|
|
fmt->header = hpp__header;
|
|
fmt->width = hpp__width;
|
|
fmt->entry = hpp__entry_global;
|
|
|
|
/* TODO more colors */
|
|
switch (idx) {
|
|
case PERF_HPP_DIFF__BASELINE:
|
|
fmt->color = hpp__color_baseline;
|
|
break;
|
|
case PERF_HPP_DIFF__DELTA:
|
|
fmt->color = hpp__color_delta;
|
|
break;
|
|
case PERF_HPP_DIFF__RATIO:
|
|
fmt->color = hpp__color_ratio;
|
|
break;
|
|
case PERF_HPP_DIFF__WEIGHTED_DIFF:
|
|
fmt->color = hpp__color_wdiff;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
init_header(d, dfmt);
|
|
perf_hpp__column_register(fmt);
|
|
}
|
|
|
|
static void ui_init(void)
|
|
{
|
|
struct data__file *d;
|
|
int i;
|
|
|
|
data__for_each_file(i, d) {
|
|
|
|
/*
|
|
* Baseline or compute realted columns:
|
|
*
|
|
* PERF_HPP_DIFF__BASELINE
|
|
* PERF_HPP_DIFF__DELTA
|
|
* PERF_HPP_DIFF__RATIO
|
|
* PERF_HPP_DIFF__WEIGHTED_DIFF
|
|
*/
|
|
data__hpp_register(d, i ? compute_2_hpp[compute] :
|
|
PERF_HPP_DIFF__BASELINE);
|
|
|
|
/*
|
|
* And the rest:
|
|
*
|
|
* PERF_HPP_DIFF__FORMULA
|
|
* PERF_HPP_DIFF__PERIOD
|
|
* PERF_HPP_DIFF__PERIOD_BASELINE
|
|
*/
|
|
if (show_formula && i)
|
|
data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
|
|
|
|
if (show_period)
|
|
data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
|
|
PERF_HPP_DIFF__PERIOD_BASELINE);
|
|
}
|
|
}
|
|
|
|
static int data_init(int argc, const char **argv)
|
|
{
|
|
struct data__file *d;
|
|
static const char *defaults[] = {
|
|
"perf.data.old",
|
|
"perf.data",
|
|
};
|
|
bool use_default = true;
|
|
int i;
|
|
|
|
data__files_cnt = 2;
|
|
|
|
if (argc) {
|
|
if (argc == 1)
|
|
defaults[1] = argv[0];
|
|
else {
|
|
data__files_cnt = argc;
|
|
use_default = false;
|
|
}
|
|
} else if (perf_guest) {
|
|
defaults[0] = "perf.data.host";
|
|
defaults[1] = "perf.data.guest";
|
|
}
|
|
|
|
if (sort_compute >= (unsigned int) data__files_cnt) {
|
|
pr_err("Order option out of limit.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
data__files = zalloc(sizeof(*data__files) * data__files_cnt);
|
|
if (!data__files)
|
|
return -ENOMEM;
|
|
|
|
data__for_each_file(i, d) {
|
|
struct perf_data_file *file = &d->file;
|
|
|
|
file->path = use_default ? defaults[i] : argv[i];
|
|
file->mode = PERF_DATA_MODE_READ,
|
|
file->force = force,
|
|
|
|
d->idx = i;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
|
|
{
|
|
perf_config(perf_default_config, NULL);
|
|
|
|
argc = parse_options(argc, argv, options, diff_usage, 0);
|
|
|
|
if (symbol__init() < 0)
|
|
return -1;
|
|
|
|
if (data_init(argc, argv) < 0)
|
|
return -1;
|
|
|
|
ui_init();
|
|
|
|
sort__mode = SORT_MODE__DIFF;
|
|
|
|
if (setup_sorting() < 0)
|
|
usage_with_options(diff_usage, options);
|
|
|
|
setup_pager();
|
|
|
|
sort__setup_elide(NULL);
|
|
|
|
return __cmd_diff();
|
|
}
|