From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/tools/perf/builtin-diff.c | 747 +++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 698 insertions(+), 49 deletions(-)
diff --git a/kernel/tools/perf/builtin-diff.c b/kernel/tools/perf/builtin-diff.c
index 39db2ee..cefc715 100644
--- a/kernel/tools/perf/builtin-diff.c
+++ b/kernel/tools/perf/builtin-diff.c
@@ -6,6 +6,7 @@
* DSOs and symbol information, sort them and produce a diff.
*/
#include "builtin.h"
+#include "perf.h"
#include "util/debug.h"
#include "util/event.h"
@@ -15,15 +16,35 @@
#include "util/session.h"
#include "util/tool.h"
#include "util/sort.h"
+#include "util/srcline.h"
#include "util/symbol.h"
-#include "util/util.h"
#include "util/data.h"
#include "util/config.h"
+#include "util/time-utils.h"
+#include "util/annotate.h"
+#include "util/map.h"
+#include "util/spark.h"
+#include "util/block-info.h"
+#include "util/stream.h"
+#include <linux/err.h>
+#include <linux/zalloc.h>
+#include <subcmd/pager.h>
+#include <subcmd/parse-options.h>
#include <errno.h>
#include <inttypes.h>
#include <stdlib.h>
#include <math.h>
+
+struct perf_diff {
+ struct perf_tool tool;
+ const char *time_str;
+ struct perf_time_interval *ptime_range;
+ int range_size;
+ int range_num;
+ bool has_br_stack;
+ bool stream;
+};
/* Diff command specific HPP columns. */
enum {
@@ -35,6 +56,8 @@
PERF_HPP_DIFF__WEIGHTED_DIFF,
PERF_HPP_DIFF__FORMULA,
PERF_HPP_DIFF__DELTA_ABS,
+ PERF_HPP_DIFF__CYCLES,
+ PERF_HPP_DIFF__CYCLES_HIST,
PERF_HPP_DIFF__MAX_INDEX
};
@@ -51,6 +74,7 @@
struct perf_data data;
int idx;
struct hists *hists;
+ struct evlist_streams *evlist_streams;
struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
};
@@ -69,17 +93,23 @@
static bool show_period;
static bool show_formula;
static bool show_baseline_only;
+static bool cycles_hist;
static unsigned int sort_compute = 1;
static s64 compute_wdiff_w1;
static s64 compute_wdiff_w2;
+
+static const char *cpu_list;
+static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
enum {
COMPUTE_DELTA,
COMPUTE_RATIO,
COMPUTE_WEIGHTED_DIFF,
COMPUTE_DELTA_ABS,
+ COMPUTE_CYCLES,
COMPUTE_MAX,
+ COMPUTE_STREAM, /* After COMPUTE_MAX to avoid use current compute arrays */
};
const char *compute_names[COMPUTE_MAX] = {
@@ -87,6 +117,7 @@
[COMPUTE_DELTA_ABS] = "delta-abs",
[COMPUTE_RATIO] = "ratio",
[COMPUTE_WEIGHTED_DIFF] = "wdiff",
+ [COMPUTE_CYCLES] = "cycles",
};
static int compute = COMPUTE_DELTA_ABS;
@@ -96,6 +127,7 @@
[COMPUTE_DELTA_ABS] = PERF_HPP_DIFF__DELTA_ABS,
[COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
[COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
+ [COMPUTE_CYCLES] = PERF_HPP_DIFF__CYCLES,
};
#define MAX_COL_WIDTH 70
@@ -134,6 +166,14 @@
[PERF_HPP_DIFF__FORMULA] = {
.name = "Formula",
.width = MAX_COL_WIDTH,
+ },
+ [PERF_HPP_DIFF__CYCLES] = {
+ .name = "[Program Block Range] Cycles Diff",
+ .width = 70,
+ },
+ [PERF_HPP_DIFF__CYCLES_HIST] = {
+ .name = "stddev/Hist",
+ .width = NUM_SPARKS + 9,
}
};
@@ -323,15 +363,51 @@
return -1;
}
-static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
+static void *block_hist_zalloc(size_t size)
+{
+ struct block_hist *bh;
+
+ bh = zalloc(size + sizeof(*bh));
+ if (!bh)
+ return NULL;
+
+ return &bh->he;
+}
+
+static void block_hist_free(void *he)
+{
+ struct block_hist *bh;
+
+ bh = container_of(he, struct block_hist, he);
+ hists__delete_entries(&bh->block_hists);
+ free(bh);
+}
+
+struct hist_entry_ops block_hist_ops = {
+ .new = block_hist_zalloc,
+ .free = block_hist_free,
+};
+
+static int diff__process_sample_event(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
- struct perf_evsel *evsel,
+ struct evsel *evsel,
struct machine *machine)
{
+ struct perf_diff *pdiff = container_of(tool, struct perf_diff, tool);
struct addr_location al;
struct hists *hists = evsel__hists(evsel);
+ struct hist_entry_iter iter = {
+ .evsel = evsel,
+ .sample = sample,
+ .ops = &hist_iter_normal,
+ };
int ret = -1;
+
+ if (perf_time__ranges_skip_sample(pdiff->ptime_range, pdiff->range_num,
+ sample->time)) {
+ return 0;
+ }
if (machine__resolve(machine, &al, sample) < 0) {
pr_warning("problem processing %d event, skipping it.\n",
@@ -339,9 +415,39 @@
return -1;
}
- if (!hists__add_entry(hists, &al, NULL, NULL, NULL, sample, true)) {
- pr_warning("problem incrementing symbol period, skipping event\n");
+ if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) {
+ ret = 0;
goto out_put;
+ }
+
+ switch (compute) {
+ case COMPUTE_CYCLES:
+ if (!hists__add_entry_ops(hists, &block_hist_ops, &al, NULL,
+ NULL, NULL, sample, true)) {
+ pr_warning("problem incrementing symbol period, "
+ "skipping event\n");
+ goto out_put;
+ }
+
+ hist__account_cycles(sample->branch_stack, &al, sample, false,
+ NULL);
+ break;
+
+ case COMPUTE_STREAM:
+ if (hist_entry_iter__add(&iter, &al, PERF_MAX_STACK_DEPTH,
+ NULL)) {
+ pr_debug("problem adding hist entry, skipping event\n");
+ goto out_put;
+ }
+ break;
+
+ default:
+ if (!hists__add_entry(hists, &al, NULL, NULL, NULL, sample,
+ true)) {
+ pr_warning("problem incrementing symbol period, "
+ "skipping event\n");
+ goto out_put;
+ }
}
/*
@@ -359,35 +465,38 @@
return ret;
}
-static struct perf_tool tool = {
- .sample = diff__process_sample_event,
- .mmap = perf_event__process_mmap,
- .mmap2 = perf_event__process_mmap2,
- .comm = perf_event__process_comm,
- .exit = perf_event__process_exit,
- .fork = perf_event__process_fork,
- .lost = perf_event__process_lost,
- .namespaces = perf_event__process_namespaces,
- .ordered_events = true,
- .ordering_requires_timestamps = true,
+static struct perf_diff pdiff = {
+ .tool = {
+ .sample = diff__process_sample_event,
+ .mmap = perf_event__process_mmap,
+ .mmap2 = perf_event__process_mmap2,
+ .comm = perf_event__process_comm,
+ .exit = perf_event__process_exit,
+ .fork = perf_event__process_fork,
+ .lost = perf_event__process_lost,
+ .namespaces = perf_event__process_namespaces,
+ .cgroup = perf_event__process_cgroup,
+ .ordered_events = true,
+ .ordering_requires_timestamps = true,
+ },
};
-static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
- struct perf_evlist *evlist)
+static struct evsel *evsel_match(struct evsel *evsel,
+ struct evlist *evlist)
{
- struct perf_evsel *e;
+ struct evsel *e;
evlist__for_each_entry(evlist, e) {
- if (perf_evsel__match2(evsel, e))
+ if (evsel__match2(evsel, e))
return e;
}
return NULL;
}
-static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
+static void perf_evlist__collapse_resort(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel) {
struct hists *hists = evsel__hists(evsel);
@@ -429,7 +538,7 @@
static void hists__baseline_only(struct hists *hists)
{
- struct rb_root *root;
+ struct rb_root_cached *root;
struct rb_node *next;
if (hists__has(hists, need_collapse))
@@ -437,21 +546,143 @@
else
root = hists->entries_in;
- next = rb_first(root);
+ next = rb_first_cached(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);
+ rb_erase_cached(&he->rb_node_in, root);
hist_entry__delete(he);
+ }
+ }
+}
+
+static int64_t block_cycles_diff_cmp(struct hist_entry *left,
+ struct hist_entry *right)
+{
+ bool pairs_left = hist_entry__has_pairs(left);
+ bool pairs_right = hist_entry__has_pairs(right);
+ s64 l, r;
+
+ if (!pairs_left && !pairs_right)
+ return 0;
+
+ l = llabs(left->diff.cycles);
+ r = llabs(right->diff.cycles);
+ return r - l;
+}
+
+static int64_t block_sort(struct perf_hpp_fmt *fmt __maybe_unused,
+ struct hist_entry *left, struct hist_entry *right)
+{
+ return block_cycles_diff_cmp(right, left);
+}
+
+static void init_block_hist(struct block_hist *bh)
+{
+ __hists__init(&bh->block_hists, &bh->block_list);
+ perf_hpp_list__init(&bh->block_list);
+
+ INIT_LIST_HEAD(&bh->block_fmt.list);
+ INIT_LIST_HEAD(&bh->block_fmt.sort_list);
+ bh->block_fmt.cmp = block_info__cmp;
+ bh->block_fmt.sort = block_sort;
+ perf_hpp_list__register_sort_field(&bh->block_list,
+ &bh->block_fmt);
+ bh->valid = true;
+}
+
+static struct hist_entry *get_block_pair(struct hist_entry *he,
+ struct hists *hists_pair)
+{
+ struct rb_root_cached *root = hists_pair->entries_in;
+ struct rb_node *next = rb_first_cached(root);
+ int64_t cmp;
+
+ while (next != NULL) {
+ struct hist_entry *he_pair = rb_entry(next, struct hist_entry,
+ rb_node_in);
+
+ next = rb_next(&he_pair->rb_node_in);
+
+ cmp = __block_info__cmp(he_pair, he);
+ if (!cmp)
+ return he_pair;
+ }
+
+ return NULL;
+}
+
+static void init_spark_values(unsigned long *svals, int num)
+{
+ for (int i = 0; i < num; i++)
+ svals[i] = 0;
+}
+
+static void update_spark_value(unsigned long *svals, int num,
+ struct stats *stats, u64 val)
+{
+ int n = stats->n;
+
+ if (n < num)
+ svals[n] = val;
+}
+
+static void compute_cycles_diff(struct hist_entry *he,
+ struct hist_entry *pair)
+{
+ pair->diff.computed = true;
+ if (pair->block_info->num && he->block_info->num) {
+ pair->diff.cycles =
+ pair->block_info->cycles_aggr / pair->block_info->num_aggr -
+ he->block_info->cycles_aggr / he->block_info->num_aggr;
+
+ if (!cycles_hist)
+ return;
+
+ init_stats(&pair->diff.stats);
+ init_spark_values(pair->diff.svals, NUM_SPARKS);
+
+ for (int i = 0; i < pair->block_info->num; i++) {
+ u64 val;
+
+ if (i >= he->block_info->num || i >= NUM_SPARKS)
+ break;
+
+ val = llabs(pair->block_info->cycles_spark[i] -
+ he->block_info->cycles_spark[i]);
+
+ update_spark_value(pair->diff.svals, NUM_SPARKS,
+ &pair->diff.stats, val);
+ update_stats(&pair->diff.stats, val);
+ }
+ }
+}
+
+static void block_hists_match(struct hists *hists_base,
+ struct hists *hists_pair)
+{
+ struct rb_root_cached *root = hists_base->entries_in;
+ struct rb_node *next = rb_first_cached(root);
+
+ while (next != NULL) {
+ struct hist_entry *he = rb_entry(next, struct hist_entry,
+ rb_node_in);
+ struct hist_entry *pair = get_block_pair(he, hists_pair);
+
+ next = rb_next(&he->rb_node_in);
+
+ if (pair) {
+ hist_entry__add_pair(pair, he);
+ compute_cycles_diff(he, pair);
}
}
}
static void hists__precompute(struct hists *hists)
{
- struct rb_root *root;
+ struct rb_root_cached *root;
struct rb_node *next;
if (hists__has(hists, need_collapse))
@@ -459,14 +690,21 @@
else
root = hists->entries_in;
- next = rb_first(root);
+ next = rb_first_cached(root);
while (next != NULL) {
+ struct block_hist *bh, *pair_bh;
struct hist_entry *he, *pair;
struct data__file *d;
int i;
he = rb_entry(next, struct hist_entry, rb_node_in);
next = rb_next(&he->rb_node_in);
+
+ if (compute == COMPUTE_CYCLES) {
+ bh = container_of(he, struct block_hist, he);
+ init_block_hist(bh);
+ block_info__process_sym(he, bh, NULL, 0);
+ }
data__for_each_file_new(i, d) {
pair = get_pair_data(he, d);
@@ -483,6 +721,21 @@
break;
case COMPUTE_WEIGHTED_DIFF:
compute_wdiff(he, pair);
+ break;
+ case COMPUTE_CYCLES:
+ pair_bh = container_of(pair, struct block_hist,
+ he);
+ init_block_hist(pair_bh);
+ block_info__process_sym(pair, pair_bh, NULL, 0);
+
+ bh = container_of(he, struct block_hist, he);
+
+ if (bh->valid && pair_bh->valid) {
+ block_hists_match(&bh->block_hists,
+ &pair_bh->block_hists);
+ hists__output_resort(&pair_bh->block_hists,
+ NULL);
+ }
break;
default:
BUG_ON(1);
@@ -695,6 +948,9 @@
hists__precompute(hists);
hists__output_resort(hists, NULL);
+ if (compute == COMPUTE_CYCLES)
+ symbol_conf.report_block = true;
+
hists__fprintf(hists, !quiet, 0, 0, 0, stdout,
!symbol_conf.use_callchain);
}
@@ -708,7 +964,7 @@
data__for_each_file(i, d)
fprintf(stdout, "# [%d] %s %s\n",
- d->idx, d->data.file.path,
+ d->idx, d->data.path,
!d->idx ? "(Baseline)" : "");
fprintf(stdout, "#\n");
@@ -716,8 +972,8 @@
static void data_process(void)
{
- struct perf_evlist *evlist_base = data__files[0].session->evlist;
- struct perf_evsel *evsel_base;
+ struct evlist *evlist_base = data__files[0].session->evlist;
+ struct evsel *evsel_base;
bool first = true;
evlist__for_each_entry(evlist_base, evsel_base) {
@@ -726,8 +982,8 @@
int i;
data__for_each_file_new(i, d) {
- struct perf_evlist *evlist = d->session->evlist;
- struct perf_evsel *evsel;
+ struct evlist *evlist = d->session->evlist;
+ struct evsel *evsel;
struct hists *hists;
evsel = evsel_match(evsel_base, evlist);
@@ -745,7 +1001,7 @@
if (!quiet) {
fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
- perf_evsel__name(evsel_base));
+ evsel__name(evsel_base));
}
first = false;
@@ -754,15 +1010,60 @@
data__fprintf();
/* Don't sort callchain for perf diff */
- perf_evsel__reset_sample_bit(evsel_base, CALLCHAIN);
+ evsel__reset_sample_bit(evsel_base, CALLCHAIN);
hists__process(hists_base);
}
}
+static int process_base_stream(struct data__file *data_base,
+ struct data__file *data_pair,
+ const char *title __maybe_unused)
+{
+ struct evlist *evlist_base = data_base->session->evlist;
+ struct evlist *evlist_pair = data_pair->session->evlist;
+ struct evsel *evsel_base, *evsel_pair;
+ struct evsel_streams *es_base, *es_pair;
+
+ evlist__for_each_entry(evlist_base, evsel_base) {
+ evsel_pair = evsel_match(evsel_base, evlist_pair);
+ if (!evsel_pair)
+ continue;
+
+ es_base = evsel_streams__entry(data_base->evlist_streams,
+ evsel_base->idx);
+ if (!es_base)
+ return -1;
+
+ es_pair = evsel_streams__entry(data_pair->evlist_streams,
+ evsel_pair->idx);
+ if (!es_pair)
+ return -1;
+
+ evsel_streams__match(es_base, es_pair);
+ evsel_streams__report(es_base, es_pair);
+ }
+
+ return 0;
+}
+
+static void stream_process(void)
+{
+ /*
+ * Stream comparison only supports two data files.
+ * perf.data.old and perf.data. data__files[0] is perf.data.old,
+ * data__files[1] is perf.data.
+ */
+ process_base_stream(&data__files[0], &data__files[1],
+ "# Output based on old perf data:\n#\n");
+}
+
static void data__free(struct data__file *d)
{
int col;
+
+ if (d->evlist_streams)
+ evlist_streams__delete(d->evlist_streams);
for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
struct diff_hpp_fmt *fmt = &d->fmt[col];
@@ -771,29 +1072,167 @@
}
}
+static int abstime_str_dup(char **pstr)
+{
+ char *str = NULL;
+
+ if (pdiff.time_str && strchr(pdiff.time_str, ':')) {
+ str = strdup(pdiff.time_str);
+ if (!str)
+ return -ENOMEM;
+ }
+
+ *pstr = str;
+ return 0;
+}
+
+static int parse_absolute_time(struct data__file *d, char **pstr)
+{
+ char *p = *pstr;
+ int ret;
+
+ /*
+ * Absolute timestamp for one file has the format: a.b,c.d
+ * For multiple files, the format is: a.b,c.d:a.b,c.d
+ */
+ p = strchr(*pstr, ':');
+ if (p) {
+ if (p == *pstr) {
+ pr_err("Invalid time string\n");
+ return -EINVAL;
+ }
+
+ *p = 0;
+ p++;
+ if (*p == 0) {
+ pr_err("Invalid time string\n");
+ return -EINVAL;
+ }
+ }
+
+ ret = perf_time__parse_for_ranges(*pstr, d->session,
+ &pdiff.ptime_range,
+ &pdiff.range_size,
+ &pdiff.range_num);
+ if (ret < 0)
+ return ret;
+
+ if (!p || *p == 0)
+ *pstr = NULL;
+ else
+ *pstr = p;
+
+ return ret;
+}
+
+static int parse_percent_time(struct data__file *d)
+{
+ int ret;
+
+ ret = perf_time__parse_for_ranges(pdiff.time_str, d->session,
+ &pdiff.ptime_range,
+ &pdiff.range_size,
+ &pdiff.range_num);
+ return ret;
+}
+
+static int parse_time_str(struct data__file *d, char *abstime_ostr,
+ char **pabstime_tmp)
+{
+ int ret = 0;
+
+ if (abstime_ostr)
+ ret = parse_absolute_time(d, pabstime_tmp);
+ else if (pdiff.time_str)
+ ret = parse_percent_time(d);
+
+ return ret;
+}
+
+static int check_file_brstack(void)
+{
+ struct data__file *d;
+ bool has_br_stack;
+ int i;
+
+ data__for_each_file(i, d) {
+ d->session = perf_session__new(&d->data, false, &pdiff.tool);
+ if (IS_ERR(d->session)) {
+ pr_err("Failed to open %s\n", d->data.path);
+ return PTR_ERR(d->session);
+ }
+
+ has_br_stack = perf_header__has_feat(&d->session->header,
+ HEADER_BRANCH_STACK);
+ perf_session__delete(d->session);
+ if (!has_br_stack)
+ return 0;
+ }
+
+ /* Set only all files having branch stacks */
+ pdiff.has_br_stack = true;
+ return 0;
+}
+
static int __cmd_diff(void)
{
struct data__file *d;
- int ret = -EINVAL, i;
+ int ret, i;
+ char *abstime_ostr, *abstime_tmp;
+
+ ret = abstime_str_dup(&abstime_ostr);
+ if (ret)
+ return ret;
+
+ abstime_tmp = abstime_ostr;
+ ret = -EINVAL;
data__for_each_file(i, d) {
- d->session = perf_session__new(&d->data, false, &tool);
- if (!d->session) {
- pr_err("Failed to open %s\n", d->data.file.path);
- ret = -1;
+ d->session = perf_session__new(&d->data, false, &pdiff.tool);
+ if (IS_ERR(d->session)) {
+ ret = PTR_ERR(d->session);
+ pr_err("Failed to open %s\n", d->data.path);
goto out_delete;
+ }
+
+ if (pdiff.time_str) {
+ ret = parse_time_str(d, abstime_ostr, &abstime_tmp);
+ if (ret < 0)
+ goto out_delete;
+ }
+
+ if (cpu_list) {
+ ret = perf_session__cpu_bitmap(d->session, cpu_list,
+ cpu_bitmap);
+ if (ret < 0)
+ goto out_delete;
}
ret = perf_session__process_events(d->session);
if (ret) {
- pr_err("Failed to process %s\n", d->data.file.path);
+ pr_err("Failed to process %s\n", d->data.path);
goto out_delete;
}
perf_evlist__collapse_resort(d->session->evlist);
+
+ if (pdiff.ptime_range)
+ zfree(&pdiff.ptime_range);
+
+ if (compute == COMPUTE_STREAM) {
+ d->evlist_streams = evlist__create_streams(
+ d->session->evlist, 5);
+ if (!d->evlist_streams) {
+ ret = -ENOMEM;
+ goto out_delete;
+ }
+ }
}
- data_process();
+ if (compute == COMPUTE_STREAM)
+ stream_process();
+ else
+ data_process();
out_delete:
data__for_each_file(i, d) {
@@ -802,6 +1241,13 @@
}
free(data__files);
+
+ if (pdiff.ptime_range)
+ zfree(&pdiff.ptime_range);
+
+ if (abstime_ostr)
+ free(abstime_ostr);
+
return ret;
}
@@ -817,13 +1263,16 @@
OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
"Show only items with match in baseline"),
OPT_CALLBACK('c', "compute", &compute,
- "delta,delta-abs,ratio,wdiff:w1,w2 (default delta-abs)",
+ "delta,delta-abs,ratio,wdiff:w1,w2 (default delta-abs),cycles",
"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(0, "cycles-hist", &cycles_hist,
+ "Show cycles histogram and standard deviation "
+ "- WARNING: use only with -c cycles."),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
@@ -849,6 +1298,15 @@
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_STRING(0, "time", &pdiff.time_str, "str",
+ "Time span (time percent or absolute timestamp)"),
+ OPT_STRING(0, "cpu", &cpu_list, "cpu", "list of cpus to profile"),
+ OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
+ "only consider symbols in these pids"),
+ OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
+ "only consider symbols in these tids"),
+ OPT_BOOLEAN(0, "stream", &pdiff.stream,
+ "Enable hot streams comparison."),
OPT_END()
};
@@ -888,6 +1346,50 @@
return ret;
}
+static int cycles_printf(struct hist_entry *he, struct hist_entry *pair,
+ struct perf_hpp *hpp, int width)
+{
+ struct block_hist *bh = container_of(he, struct block_hist, he);
+ struct block_hist *bh_pair = container_of(pair, struct block_hist, he);
+ struct hist_entry *block_he;
+ struct block_info *bi;
+ char buf[128];
+ char *start_line, *end_line;
+
+ block_he = hists__get_entry(&bh_pair->block_hists, bh->block_idx);
+ if (!block_he) {
+ hpp->skip = true;
+ return 0;
+ }
+
+ /*
+ * Avoid printing the warning "addr2line_init failed for ..."
+ */
+ symbol_conf.disable_add2line_warn = true;
+
+ bi = block_he->block_info;
+
+ start_line = map__srcline(he->ms.map, bi->sym->start + bi->start,
+ he->ms.sym);
+
+ end_line = map__srcline(he->ms.map, bi->sym->start + bi->end,
+ he->ms.sym);
+
+ if ((strncmp(start_line, SRCLINE_UNKNOWN, strlen(SRCLINE_UNKNOWN)) != 0) &&
+ (strncmp(end_line, SRCLINE_UNKNOWN, strlen(SRCLINE_UNKNOWN)) != 0)) {
+ scnprintf(buf, sizeof(buf), "[%s -> %s] %4ld",
+ start_line, end_line, block_he->diff.cycles);
+ } else {
+ scnprintf(buf, sizeof(buf), "[%7lx -> %7lx] %4ld",
+ bi->start, bi->end, block_he->diff.cycles);
+ }
+
+ free_srcline(start_line);
+ free_srcline(end_line);
+
+ return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
+}
+
static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
struct perf_hpp *hpp, struct hist_entry *he,
int comparison_method)
@@ -899,8 +1401,17 @@
s64 wdiff;
char pfmt[20] = " ";
- if (!pair)
+ if (!pair) {
+ if (comparison_method == COMPUTE_CYCLES) {
+ struct block_hist *bh;
+
+ bh = container_of(he, struct block_hist, he);
+ if (bh->block_idx)
+ hpp->skip = true;
+ }
+
goto no_print;
+ }
switch (comparison_method) {
case COMPUTE_DELTA:
@@ -935,6 +1446,8 @@
return color_snprintf(hpp->buf, hpp->size,
get_percent_color(wdiff),
pfmt, wdiff);
+ case COMPUTE_CYCLES:
+ return cycles_printf(he, pair, hpp, dfmt->header_width);
default:
BUG_ON(1);
}
@@ -962,6 +1475,96 @@
struct perf_hpp *hpp, struct hist_entry *he)
{
return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
+}
+
+static int hpp__color_cycles(struct perf_hpp_fmt *fmt,
+ struct perf_hpp *hpp, struct hist_entry *he)
+{
+ return __hpp__color_compare(fmt, hpp, he, COMPUTE_CYCLES);
+}
+
+static int all_zero(unsigned long *vals, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ if (vals[i] != 0)
+ return 0;
+ return 1;
+}
+
+static int print_cycles_spark(char *bf, int size, unsigned long *svals, u64 n)
+{
+ int printed;
+
+ if (n <= 1)
+ return 0;
+
+ if (n > NUM_SPARKS)
+ n = NUM_SPARKS;
+ if (all_zero(svals, n))
+ return 0;
+
+ printed = print_spark(bf, size, svals, n);
+ printed += scnprintf(bf + printed, size - printed, " ");
+ return printed;
+}
+
+static int hpp__color_cycles_hist(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);
+ struct hist_entry *pair = get_pair_fmt(he, dfmt);
+ struct block_hist *bh = container_of(he, struct block_hist, he);
+ struct block_hist *bh_pair;
+ struct hist_entry *block_he;
+ char spark[32], buf[128];
+ double r;
+ int ret, pad;
+
+ if (!pair) {
+ if (bh->block_idx)
+ hpp->skip = true;
+
+ goto no_print;
+ }
+
+ bh_pair = container_of(pair, struct block_hist, he);
+
+ block_he = hists__get_entry(&bh_pair->block_hists, bh->block_idx);
+ if (!block_he) {
+ hpp->skip = true;
+ goto no_print;
+ }
+
+ ret = print_cycles_spark(spark, sizeof(spark), block_he->diff.svals,
+ block_he->diff.stats.n);
+
+ r = rel_stddev_stats(stddev_stats(&block_he->diff.stats),
+ avg_stats(&block_he->diff.stats));
+
+ if (ret) {
+ /*
+ * Padding spaces if number of sparks less than NUM_SPARKS
+ * otherwise the output is not aligned.
+ */
+ pad = NUM_SPARKS - ((ret - 1) / 3);
+ scnprintf(buf, sizeof(buf), "%s%5.1f%% %s", "\u00B1", r, spark);
+ ret = scnprintf(hpp->buf, hpp->size, "%*s",
+ dfmt->header_width, buf);
+
+ if (pad) {
+ ret += scnprintf(hpp->buf + ret, hpp->size - ret,
+ "%-*s", pad, " ");
+ }
+
+ return ret;
+ }
+
+no_print:
+ return scnprintf(hpp->buf, hpp->size, "%*s",
+ dfmt->header_width, " ");
}
static void
@@ -1038,7 +1641,7 @@
default:
BUG_ON(1);
- };
+ }
}
static void
@@ -1165,6 +1768,14 @@
fmt->color = hpp__color_delta;
fmt->sort = hist_entry__cmp_delta_abs;
break;
+ case PERF_HPP_DIFF__CYCLES:
+ fmt->color = hpp__color_cycles;
+ fmt->sort = hist_entry__cmp_nop;
+ break;
+ case PERF_HPP_DIFF__CYCLES_HIST:
+ fmt->color = hpp__color_cycles_hist;
+ fmt->sort = hist_entry__cmp_nop;
+ break;
default:
fmt->sort = hist_entry__cmp_nop;
break;
@@ -1190,9 +1801,13 @@
* PERF_HPP_DIFF__DELTA
* PERF_HPP_DIFF__RATIO
* PERF_HPP_DIFF__WEIGHTED_DIFF
+ * PERF_HPP_DIFF__CYCLES
*/
data__hpp_register(d, i ? compute_2_hpp[compute] :
PERF_HPP_DIFF__BASELINE);
+
+ if (cycles_hist && i)
+ data__hpp_register(d, PERF_HPP_DIFF__CYCLES_HIST);
/*
* And the rest:
@@ -1245,6 +1860,13 @@
case COMPUTE_DELTA_ABS:
fmt->sort = hist_entry__cmp_delta_abs_idx;
break;
+ case COMPUTE_CYCLES:
+ /*
+ * Should set since 'fmt->sort' is called without
+ * checking valid during sorting
+ */
+ fmt->sort = hist_entry__cmp_nop;
+ break;
default:
BUG_ON(1);
}
@@ -1289,9 +1911,9 @@
data__for_each_file(i, d) {
struct perf_data *data = &d->data;
- data->file.path = use_default ? defaults[i] : argv[i];
- data->mode = PERF_DATA_MODE_READ,
- data->force = force,
+ data->path = use_default ? defaults[i] : argv[i];
+ data->mode = PERF_DATA_MODE_READ,
+ data->force = force,
d->idx = i;
}
@@ -1341,16 +1963,43 @@
if (quiet)
perf_quiet_option();
+ if (cycles_hist && (compute != COMPUTE_CYCLES))
+ usage_with_options(diff_usage, options);
+
+ if (pdiff.stream)
+ compute = COMPUTE_STREAM;
+
+ symbol__annotation_init();
+
if (symbol__init(NULL) < 0)
return -1;
if (data_init(argc, argv) < 0)
return -1;
- if (ui_init() < 0)
+ if (check_file_brstack() < 0)
return -1;
- sort__mode = SORT_MODE__DIFF;
+ if ((compute == COMPUTE_CYCLES || compute == COMPUTE_STREAM)
+ && !pdiff.has_br_stack) {
+ return -1;
+ }
+
+ if (compute == COMPUTE_STREAM) {
+ symbol_conf.show_branchflag_count = true;
+ symbol_conf.disable_add2line_warn = true;
+ callchain_param.mode = CHAIN_FLAT;
+ callchain_param.key = CCKEY_SRCLINE;
+ callchain_param.branch_callstack = 1;
+ symbol_conf.use_callchain = true;
+ callchain_register_param(&callchain_param);
+ sort_order = "srcline,symbol,dso";
+ } else {
+ if (ui_init() < 0)
+ return -1;
+
+ sort__mode = SORT_MODE__DIFF;
+ }
if (setup_sorting(NULL) < 0)
usage_with_options(diff_usage, options);
--
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