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- // SPDX-License-Identifier: GPL-2.0
- /*
- * 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 "perf.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/srcline.h"
- #include "util/symbol.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 {
- 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__DELTA_ABS,
- PERF_HPP_DIFF__CYCLES,
- PERF_HPP_DIFF__CYCLES_HIST,
- 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 data;
- int idx;
- struct hists *hists;
- struct evlist_streams *evlist_streams;
- 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 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] = {
- [COMPUTE_DELTA] = "delta",
- [COMPUTE_DELTA_ABS] = "delta-abs",
- [COMPUTE_RATIO] = "ratio",
- [COMPUTE_WEIGHTED_DIFF] = "wdiff",
- [COMPUTE_CYCLES] = "cycles",
- };
- static int compute = COMPUTE_DELTA_ABS;
- static int compute_2_hpp[COMPUTE_MAX] = {
- [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
- [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
- 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__DELTA_ABS] = {
- .name = "Delta Abs",
- .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,
- },
- [PERF_HPP_DIFF__CYCLES] = {
- .name = "[Program Block Range] Cycles Diff",
- .width = 70,
- },
- [PERF_HPP_DIFF__CYCLES_HIST] = {
- .name = "stddev/Hist",
- .width = NUM_SPARKS + 9,
- }
- };
- 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:
- case COMPUTE_DELTA_ABS:
- 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 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 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",
- event->header.type);
- return -1;
- }
- 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;
- }
- }
- /*
- * 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.
- */
- hists->stats.total_period += sample->period;
- if (!al.filtered)
- hists->stats.total_non_filtered_period += sample->period;
- ret = 0;
- out_put:
- addr_location__put(&al);
- return ret;
- }
- 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 evsel *evsel_match(struct evsel *evsel,
- struct evlist *evlist)
- {
- struct evsel *e;
- evlist__for_each_entry(evlist, e) {
- if (evsel__match2(evsel, e))
- return e;
- }
- return NULL;
- }
- static void evlist__collapse_resort(struct evlist *evlist)
- {
- struct evsel *evsel;
- evlist__for_each_entry(evlist, evsel) {
- struct hists *hists = evsel__hists(evsel);
- hists__collapse_resort(hists, NULL);
- }
- }
- static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
- {
- struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
- void *ptr = dfmt - dfmt->idx;
- struct data__file *d = container_of(ptr, struct data__file, fmt);
- return d;
- }
- 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)
- {
- struct data__file *d = fmt_to_data_file(&dfmt->fmt);
- return get_pair_data(he, d);
- }
- static void hists__baseline_only(struct hists *hists)
- {
- struct rb_root_cached *root;
- struct rb_node *next;
- if (hists__has(hists, need_collapse))
- root = &hists->entries_collapsed;
- else
- root = hists->entries_in;
- 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_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_cached *root;
- struct rb_node *next;
- if (hists__has(hists, need_collapse))
- root = &hists->entries_collapsed;
- else
- root = hists->entries_in;
- 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);
- if (!pair)
- continue;
- switch (compute) {
- case COMPUTE_DELTA:
- case COMPUTE_DELTA_ABS:
- compute_delta(he, pair);
- break;
- case COMPUTE_RATIO:
- compute_ratio(he, pair);
- 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);
- }
- }
- }
- }
- 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_DELTA_ABS:
- {
- double l = fabs(left->diff.period_ratio_delta);
- double r = fabs(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, int sort_idx)
- {
- 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_idx]);
- p_right = get_pair_data(right, &data__files[sort_idx]);
- 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 int64_t
- hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
- int c, int sort_idx)
- {
- struct hist_entry *p_right, *p_left;
- p_left = get_pair_data(left, &data__files[sort_idx]);
- p_right = get_pair_data(right, &data__files[sort_idx]);
- if (!p_left && !p_right)
- return 0;
- if (!p_left || !p_right)
- return p_left ? -1 : 1;
- if (c != COMPUTE_DELTA && c != COMPUTE_DELTA_ABS) {
- /*
- * The delta can be computed without the baseline, but
- * others are not. Put those entries which have no
- * values below.
- */
- if (left->dummy && right->dummy)
- return 0;
- if (left->dummy || right->dummy)
- return left->dummy ? 1 : -1;
- }
- return __hist_entry__cmp_compute(p_left, p_right, c);
- }
- static int64_t
- hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
- struct hist_entry *left __maybe_unused,
- struct hist_entry *right __maybe_unused)
- {
- return 0;
- }
- static int64_t
- hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
- struct hist_entry *left, struct hist_entry *right)
- {
- if (left->stat.period == right->stat.period)
- return 0;
- return left->stat.period > right->stat.period ? 1 : -1;
- }
- static int64_t
- hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
- struct hist_entry *left, struct hist_entry *right)
- {
- struct data__file *d = fmt_to_data_file(fmt);
- return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
- }
- static int64_t
- hist_entry__cmp_delta_abs(struct perf_hpp_fmt *fmt,
- struct hist_entry *left, struct hist_entry *right)
- {
- struct data__file *d = fmt_to_data_file(fmt);
- return hist_entry__cmp_compute(right, left, COMPUTE_DELTA_ABS, d->idx);
- }
- static int64_t
- hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
- struct hist_entry *left, struct hist_entry *right)
- {
- struct data__file *d = fmt_to_data_file(fmt);
- return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
- }
- static int64_t
- hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
- struct hist_entry *left, struct hist_entry *right)
- {
- struct data__file *d = fmt_to_data_file(fmt);
- return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
- }
- static int64_t
- hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
- struct hist_entry *left, struct hist_entry *right)
- {
- return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
- sort_compute);
- }
- static int64_t
- hist_entry__cmp_delta_abs_idx(struct perf_hpp_fmt *fmt __maybe_unused,
- struct hist_entry *left, struct hist_entry *right)
- {
- return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA_ABS,
- sort_compute);
- }
- static int64_t
- hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
- struct hist_entry *left, struct hist_entry *right)
- {
- return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
- sort_compute);
- }
- static int64_t
- hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
- struct hist_entry *left, struct hist_entry *right)
- {
- return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
- sort_compute);
- }
- static void hists__process(struct hists *hists)
- {
- if (show_baseline_only)
- hists__baseline_only(hists);
- 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);
- }
- 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->data.path,
- !d->idx ? "(Baseline)" : "");
- fprintf(stdout, "#\n");
- }
- static void data_process(void)
- {
- struct evlist *evlist_base = data__files[0].session->evlist;
- struct evsel *evsel_base;
- bool first = true;
- evlist__for_each_entry(evlist_base, evsel_base) {
- struct hists *hists_base = evsel__hists(evsel_base);
- struct data__file *d;
- int i;
- data__for_each_file_new(i, d) {
- struct evlist *evlist = d->session->evlist;
- struct evsel *evsel;
- struct hists *hists;
- evsel = evsel_match(evsel_base, evlist);
- if (!evsel)
- continue;
- hists = evsel__hists(evsel);
- d->hists = hists;
- hists__match(hists_base, hists);
- if (!show_baseline_only)
- hists__link(hists_base, hists);
- }
- if (!quiet) {
- fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
- evsel__name(evsel_base));
- }
- first = false;
- if (verbose > 0 || ((data__files_cnt > 2) && !quiet))
- data__fprintf();
- /* Don't sort callchain for perf diff */
- 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->core.idx);
- if (!es_base)
- return -1;
- es_pair = evsel_streams__entry(data_pair->evlist_streams,
- evsel_pair->core.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];
- zfree(&fmt->header);
- }
- }
- 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, &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, 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, &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.path);
- goto out_delete;
- }
- 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;
- }
- }
- }
- if (compute == COMPUTE_STREAM)
- stream_process();
- else
- data_process();
- out_delete:
- data__for_each_file(i, d) {
- if (!IS_ERR(d->session))
- perf_session__delete(d->session);
- data__free(d);
- }
- free(data__files);
- if (pdiff.ptime_range)
- zfree(&pdiff.ptime_range);
- if (abstime_ostr)
- free(abstime_ostr);
- 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('q', "quiet", &quiet, "Do not show any warnings or messages"),
- 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),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"),
- OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
- "file", "kallsyms pathname"),
- 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_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
- "separator for columns, no spaces will be added between "
- "columns '.' is reserved."),
- OPT_CALLBACK(0, "symfs", NULL, "directory",
- "Look for files with symbols relative to this directory",
- symbol__config_symfs),
- 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()
- };
- 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 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)
- {
- 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) {
- 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:
- if (pair->diff.computed)
- diff = pair->diff.period_ratio_delta;
- else
- diff = compute_delta(he, pair);
- 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);
- case COMPUTE_CYCLES:
- return cycles_printf(he, pair, hpp, dfmt->header_width);
- default:
- BUG_ON(1);
- }
- dummy_print:
- return scnprintf(hpp->buf, hpp->size, "%*s",
- dfmt->header_width, "N/A");
- no_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 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
- 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:
- case PERF_HPP_DIFF__DELTA_ABS:
- if (pair->diff.computed)
- diff = pair->diff.period_ratio_delta;
- else
- diff = compute_delta(he, pair);
- scnprintf(buf, size, "%+4.2F%%", diff);
- break;
- case PERF_HPP_DIFF__RATIO:
- /* No point for ratio number if we are dummy.. */
- if (he->dummy) {
- scnprintf(buf, size, "N/A");
- 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) {
- scnprintf(buf, size, "N/A");
- 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 hists *hists __maybe_unused,
- int line __maybe_unused,
- int *span __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 hists *hists __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;
- fmt->cmp = hist_entry__cmp_nop;
- fmt->collapse = hist_entry__cmp_nop;
- /* TODO more colors */
- switch (idx) {
- case PERF_HPP_DIFF__BASELINE:
- fmt->color = hpp__color_baseline;
- fmt->sort = hist_entry__cmp_baseline;
- break;
- case PERF_HPP_DIFF__DELTA:
- fmt->color = hpp__color_delta;
- fmt->sort = hist_entry__cmp_delta;
- break;
- case PERF_HPP_DIFF__RATIO:
- fmt->color = hpp__color_ratio;
- fmt->sort = hist_entry__cmp_ratio;
- break;
- case PERF_HPP_DIFF__WEIGHTED_DIFF:
- fmt->color = hpp__color_wdiff;
- fmt->sort = hist_entry__cmp_wdiff;
- break;
- case PERF_HPP_DIFF__DELTA_ABS:
- 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;
- }
- init_header(d, dfmt);
- perf_hpp__column_register(fmt);
- perf_hpp__register_sort_field(fmt);
- }
- static int ui_init(void)
- {
- struct data__file *d;
- struct perf_hpp_fmt *fmt;
- int i;
- data__for_each_file(i, d) {
- /*
- * Baseline or compute related columns:
- *
- * PERF_HPP_DIFF__BASELINE
- * 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:
- *
- * 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);
- }
- if (!sort_compute)
- return 0;
- /*
- * Prepend an fmt to sort on columns at 'sort_compute' first.
- * This fmt is added only to the sort list but not to the
- * output fields list.
- *
- * Note that this column (data) can be compared twice - one
- * for this 'sort_compute' fmt and another for the normal
- * diff_hpp_fmt. But it shouldn't a problem as most entries
- * will be sorted out by first try or baseline and comparing
- * is not a costly operation.
- */
- fmt = zalloc(sizeof(*fmt));
- if (fmt == NULL) {
- pr_err("Memory allocation failed\n");
- return -1;
- }
- fmt->cmp = hist_entry__cmp_nop;
- fmt->collapse = hist_entry__cmp_nop;
- switch (compute) {
- case COMPUTE_DELTA:
- fmt->sort = hist_entry__cmp_delta_idx;
- break;
- case COMPUTE_RATIO:
- fmt->sort = hist_entry__cmp_ratio_idx;
- break;
- case COMPUTE_WEIGHTED_DIFF:
- fmt->sort = hist_entry__cmp_wdiff_idx;
- break;
- 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);
- }
- perf_hpp__prepend_sort_field(fmt);
- return 0;
- }
- 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 *data = &d->data;
- data->path = use_default ? defaults[i] : argv[i];
- data->mode = PERF_DATA_MODE_READ,
- data->force = force,
- d->idx = i;
- }
- return 0;
- }
- static int diff__config(const char *var, const char *value,
- void *cb __maybe_unused)
- {
- if (!strcmp(var, "diff.order")) {
- int ret;
- if (perf_config_int(&ret, var, value) < 0)
- return -1;
- sort_compute = ret;
- return 0;
- }
- if (!strcmp(var, "diff.compute")) {
- if (!strcmp(value, "delta")) {
- compute = COMPUTE_DELTA;
- } else if (!strcmp(value, "delta-abs")) {
- compute = COMPUTE_DELTA_ABS;
- } else if (!strcmp(value, "ratio")) {
- compute = COMPUTE_RATIO;
- } else if (!strcmp(value, "wdiff")) {
- compute = COMPUTE_WEIGHTED_DIFF;
- } else {
- pr_err("Invalid compute method: %s\n", value);
- return -1;
- }
- }
- return 0;
- }
- int cmd_diff(int argc, const char **argv)
- {
- int ret = hists__init();
- if (ret < 0)
- return ret;
- perf_config(diff__config, NULL);
- argc = parse_options(argc, argv, options, diff_usage, 0);
- 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 (check_file_brstack() < 0)
- return -1;
- 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);
- setup_pager();
- sort__setup_elide(NULL);
- return __cmd_diff();
- }
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