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e0fcfb086f
As this isn't used at all in mmap.h but in evlist.h, so to cut down the header dependency tree, move it to where it is used. Also add mmap.h to the places using it but previously getting it indirectly via evlist.h. Add missing pthread.h to evlist.h, as it has a pthread_t struct member and was getting the header via mmap.h. Noticed while processing a Jiri's libperf batch touching mmap.h, where almost everything gets rebuilt because evlist.h is so popular, so cut down't this rebuild the world party. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: https://lkml.kernel.org/n/tip-he0uljeftl0xfveh3d6vtode@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
342 lines
8.3 KiB
C
342 lines
8.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "tests.h"
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#include "debug.h"
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#include "symbol.h"
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#include "sort.h"
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#include "evsel.h"
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#include "evlist.h"
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#include "machine.h"
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#include "parse-events.h"
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#include "hists_common.h"
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#include "util/mmap.h"
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#include <errno.h>
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#include <linux/kernel.h>
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struct sample {
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u32 pid;
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u64 ip;
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struct thread *thread;
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struct map *map;
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struct symbol *sym;
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};
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/* For the numbers, see hists_common.c */
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static struct sample fake_common_samples[] = {
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/* perf [kernel] schedule() */
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{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
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/* perf [perf] main() */
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{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
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/* perf [perf] cmd_record() */
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{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, },
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/* bash [bash] xmalloc() */
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{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, },
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/* bash [libc] malloc() */
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{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, },
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};
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static struct sample fake_samples[][5] = {
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{
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/* perf [perf] run_command() */
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{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_RUN_COMMAND, },
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/* perf [libc] malloc() */
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{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
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/* perf [kernel] page_fault() */
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{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
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/* perf [kernel] sys_perf_event_open() */
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{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN, },
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/* bash [libc] free() */
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{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_FREE, },
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},
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{
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/* perf [libc] free() */
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{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_LIBC_FREE, },
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/* bash [libc] malloc() */
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{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, }, /* will be merged */
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/* bash [bash] xfee() */
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{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XFREE, },
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/* bash [libc] realloc() */
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{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_REALLOC, },
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/* bash [kernel] page_fault() */
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{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
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},
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};
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static int add_hist_entries(struct evlist *evlist, struct machine *machine)
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{
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struct evsel *evsel;
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struct addr_location al;
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struct hist_entry *he;
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struct perf_sample sample = { .period = 1, .weight = 1, };
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size_t i = 0, k;
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/*
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* each evsel will have 10 samples - 5 common and 5 distinct.
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* However the second evsel also has a collapsed entry for
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* "bash [libc] malloc" so total 9 entries will be in the tree.
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*/
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evlist__for_each_entry(evlist, evsel) {
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struct hists *hists = evsel__hists(evsel);
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for (k = 0; k < ARRAY_SIZE(fake_common_samples); k++) {
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sample.cpumode = PERF_RECORD_MISC_USER;
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sample.pid = fake_common_samples[k].pid;
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sample.tid = fake_common_samples[k].pid;
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sample.ip = fake_common_samples[k].ip;
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if (machine__resolve(machine, &al, &sample) < 0)
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goto out;
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he = hists__add_entry(hists, &al, NULL,
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NULL, NULL, &sample, true);
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if (he == NULL) {
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addr_location__put(&al);
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goto out;
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}
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fake_common_samples[k].thread = al.thread;
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fake_common_samples[k].map = al.map;
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fake_common_samples[k].sym = al.sym;
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}
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for (k = 0; k < ARRAY_SIZE(fake_samples[i]); k++) {
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sample.pid = fake_samples[i][k].pid;
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sample.tid = fake_samples[i][k].pid;
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sample.ip = fake_samples[i][k].ip;
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if (machine__resolve(machine, &al, &sample) < 0)
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goto out;
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he = hists__add_entry(hists, &al, NULL,
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NULL, NULL, &sample, true);
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if (he == NULL) {
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addr_location__put(&al);
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goto out;
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}
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fake_samples[i][k].thread = al.thread;
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fake_samples[i][k].map = al.map;
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fake_samples[i][k].sym = al.sym;
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}
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i++;
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}
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return 0;
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out:
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pr_debug("Not enough memory for adding a hist entry\n");
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return -1;
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}
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static int find_sample(struct sample *samples, size_t nr_samples,
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struct thread *t, struct map *m, struct symbol *s)
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{
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while (nr_samples--) {
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if (samples->thread == t && samples->map == m &&
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samples->sym == s)
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return 1;
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samples++;
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}
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return 0;
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}
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static int __validate_match(struct hists *hists)
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{
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size_t count = 0;
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struct rb_root_cached *root;
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struct rb_node *node;
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/*
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* Only entries from fake_common_samples should have a pair.
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*/
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if (hists__has(hists, need_collapse))
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root = &hists->entries_collapsed;
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else
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root = hists->entries_in;
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node = rb_first_cached(root);
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while (node) {
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struct hist_entry *he;
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he = rb_entry(node, struct hist_entry, rb_node_in);
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if (hist_entry__has_pairs(he)) {
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if (find_sample(fake_common_samples,
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ARRAY_SIZE(fake_common_samples),
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he->thread, he->ms.map, he->ms.sym)) {
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count++;
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} else {
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pr_debug("Can't find the matched entry\n");
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return -1;
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}
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}
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node = rb_next(node);
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}
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if (count != ARRAY_SIZE(fake_common_samples)) {
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pr_debug("Invalid count for matched entries: %zd of %zd\n",
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count, ARRAY_SIZE(fake_common_samples));
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return -1;
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}
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return 0;
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}
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static int validate_match(struct hists *leader, struct hists *other)
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{
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return __validate_match(leader) || __validate_match(other);
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}
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static int __validate_link(struct hists *hists, int idx)
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{
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size_t count = 0;
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size_t count_pair = 0;
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size_t count_dummy = 0;
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struct rb_root_cached *root;
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struct rb_node *node;
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/*
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* Leader hists (idx = 0) will have dummy entries from other,
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* and some entries will have no pair. However every entry
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* in other hists should have (dummy) pair.
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*/
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if (hists__has(hists, need_collapse))
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root = &hists->entries_collapsed;
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else
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root = hists->entries_in;
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node = rb_first_cached(root);
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while (node) {
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struct hist_entry *he;
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he = rb_entry(node, struct hist_entry, rb_node_in);
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if (hist_entry__has_pairs(he)) {
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if (!find_sample(fake_common_samples,
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ARRAY_SIZE(fake_common_samples),
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he->thread, he->ms.map, he->ms.sym) &&
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!find_sample(fake_samples[idx],
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ARRAY_SIZE(fake_samples[idx]),
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he->thread, he->ms.map, he->ms.sym)) {
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count_dummy++;
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}
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count_pair++;
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} else if (idx) {
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pr_debug("A entry from the other hists should have pair\n");
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return -1;
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}
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count++;
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node = rb_next(node);
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}
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/*
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* Note that we have a entry collapsed in the other (idx = 1) hists.
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*/
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if (idx == 0) {
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if (count_dummy != ARRAY_SIZE(fake_samples[1]) - 1) {
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pr_debug("Invalid count of dummy entries: %zd of %zd\n",
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count_dummy, ARRAY_SIZE(fake_samples[1]) - 1);
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return -1;
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}
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if (count != count_pair + ARRAY_SIZE(fake_samples[0])) {
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pr_debug("Invalid count of total leader entries: %zd of %zd\n",
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count, count_pair + ARRAY_SIZE(fake_samples[0]));
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return -1;
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}
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} else {
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if (count != count_pair) {
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pr_debug("Invalid count of total other entries: %zd of %zd\n",
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count, count_pair);
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return -1;
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}
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if (count_dummy > 0) {
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pr_debug("Other hists should not have dummy entries: %zd\n",
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count_dummy);
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return -1;
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}
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}
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return 0;
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}
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static int validate_link(struct hists *leader, struct hists *other)
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{
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return __validate_link(leader, 0) || __validate_link(other, 1);
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}
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int test__hists_link(struct test *test __maybe_unused, int subtest __maybe_unused)
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{
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int err = -1;
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struct hists *hists, *first_hists;
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struct machines machines;
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struct machine *machine = NULL;
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struct evsel *evsel, *first;
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struct evlist *evlist = evlist__new();
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if (evlist == NULL)
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return -ENOMEM;
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err = parse_events(evlist, "cpu-clock", NULL);
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if (err)
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goto out;
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err = parse_events(evlist, "task-clock", NULL);
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if (err)
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goto out;
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err = TEST_FAIL;
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/* default sort order (comm,dso,sym) will be used */
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if (setup_sorting(NULL) < 0)
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goto out;
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machines__init(&machines);
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/* setup threads/dso/map/symbols also */
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machine = setup_fake_machine(&machines);
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if (!machine)
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goto out;
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if (verbose > 1)
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machine__fprintf(machine, stderr);
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/* process sample events */
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err = add_hist_entries(evlist, machine);
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if (err < 0)
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goto out;
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evlist__for_each_entry(evlist, evsel) {
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hists = evsel__hists(evsel);
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hists__collapse_resort(hists, NULL);
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if (verbose > 2)
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print_hists_in(hists);
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}
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first = perf_evlist__first(evlist);
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evsel = perf_evlist__last(evlist);
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first_hists = evsel__hists(first);
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hists = evsel__hists(evsel);
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/* match common entries */
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hists__match(first_hists, hists);
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err = validate_match(first_hists, hists);
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if (err)
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goto out;
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/* link common and/or dummy entries */
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hists__link(first_hists, hists);
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err = validate_link(first_hists, hists);
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if (err)
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goto out;
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err = 0;
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out:
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/* tear down everything */
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evlist__delete(evlist);
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reset_output_field();
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machines__exit(&machines);
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return err;
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}
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