Release 4.10 tools/perf/tests/hists_link.c
#include "perf.h"
#include "tests.h"
#include "debug.h"
#include "symbol.h"
#include "sort.h"
#include "evsel.h"
#include "evlist.h"
#include "machine.h"
#include "thread.h"
#include "parse-events.h"
#include "hists_common.h"
struct sample {
u32 pid;
u64 ip;
struct thread *thread;
struct map *map;
struct symbol *sym;
};
/* For the numbers, see hists_common.c */
static struct sample fake_common_samples[] = {
/* perf [kernel] schedule() */
{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
/* perf [perf] main() */
{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
/* perf [perf] cmd_record() */
{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, },
/* bash [bash] xmalloc() */
{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, },
/* bash [libc] malloc() */
{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, },
};
static struct sample fake_samples[][5] = {
{
/* perf [perf] run_command() */
{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_RUN_COMMAND, },
/* perf [libc] malloc() */
{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
/* perf [kernel] page_fault() */
{ .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
/* perf [kernel] sys_perf_event_open() */
{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN, },
/* bash [libc] free() */
{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_FREE, },
},
{
/* perf [libc] free() */
{ .pid = FAKE_PID_PERF2, .ip = FAKE_IP_LIBC_FREE, },
/* bash [libc] malloc() */
{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, }, /* will be merged */
/* bash [bash] xfee() */
{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XFREE, },
/* bash [libc] realloc() */
{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_REALLOC, },
/* bash [kernel] page_fault() */
{ .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
},
};
static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine)
{
struct perf_evsel *evsel;
struct addr_location al;
struct hist_entry *he;
struct perf_sample sample = { .period = 1, .weight = 1, };
size_t i = 0, k;
/*
* each evsel will have 10 samples - 5 common and 5 distinct.
* However the second evsel also has a collapsed entry for
* "bash [libc] malloc" so total 9 entries will be in the tree.
*/
evlist__for_each_entry(evlist, evsel) {
struct hists *hists = evsel__hists(evsel);
for (k = 0; k < ARRAY_SIZE(fake_common_samples); k++) {
sample.cpumode = PERF_RECORD_MISC_USER;
sample.pid = fake_common_samples[k].pid;
sample.tid = fake_common_samples[k].pid;
sample.ip = fake_common_samples[k].ip;
if (machine__resolve(machine, &al, &sample) < 0)
goto out;
he = hists__add_entry(hists, &al, NULL,
NULL, NULL, &sample, true);
if (he == NULL) {
addr_location__put(&al);
goto out;
}
fake_common_samples[k].thread = al.thread;
fake_common_samples[k].map = al.map;
fake_common_samples[k].sym = al.sym;
}
for (k = 0; k < ARRAY_SIZE(fake_samples[i]); k++) {
sample.pid = fake_samples[i][k].pid;
sample.tid = fake_samples[i][k].pid;
sample.ip = fake_samples[i][k].ip;
if (machine__resolve(machine, &al, &sample) < 0)
goto out;
he = hists__add_entry(hists, &al, NULL,
NULL, NULL, &sample, true);
if (he == NULL) {
addr_location__put(&al);
goto out;
}
fake_samples[i][k].thread = al.thread;
fake_samples[i][k].map = al.map;
fake_samples[i][k].sym = al.sym;
}
i++;
}
return 0;
out:
pr_debug("Not enough memory for adding a hist entry\n");
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 349 | 88.13% | 6 | 42.86% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 37 | 9.34% | 6 | 42.86% |
| adrian hunter | adrian hunter | 8 | 2.02% | 1 | 7.14% |
| jiri olsa | jiri olsa | 2 | 0.51% | 1 | 7.14% |
| Total | 396 | 100.00% | 14 | 100.00% |
static int find_sample(struct sample *samples, size_t nr_samples,
struct thread *t, struct map *m, struct symbol *s)
{
while (nr_samples--) {
if (samples->thread == t && samples->map == m &&
samples->sym == s)
return 1;
samples++;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 65 | 100.00% | 1 | 100.00% |
| Total | 65 | 100.00% | 1 | 100.00% |
static int __validate_match(struct hists *hists)
{
size_t count = 0;
struct rb_root *root;
struct rb_node *node;
/*
* Only entries from fake_common_samples should have a pair.
*/
if (hists__has(hists, need_collapse))
root = &hists->entries_collapsed;
else
root = hists->entries_in;
node = rb_first(root);
while (node) {
struct hist_entry *he;
he = rb_entry(node, struct hist_entry, rb_node_in);
if (hist_entry__has_pairs(he)) {
if (find_sample(fake_common_samples,
ARRAY_SIZE(fake_common_samples),
he->thread, he->ms.map, he->ms.sym)) {
count++;
} else {
pr_debug("Can't find the matched entry\n");
return -1;
}
}
node = rb_next(node);
}
if (count != ARRAY_SIZE(fake_common_samples)) {
pr_debug("Invalid count for matched entries: %zd of %zd\n",
count, ARRAY_SIZE(fake_common_samples));
return -1;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 165 | 96.49% | 1 | 50.00% |
| jiri olsa | jiri olsa | 6 | 3.51% | 1 | 50.00% |
| Total | 171 | 100.00% | 2 | 100.00% |
static int validate_match(struct hists *leader, struct hists *other)
{
return __validate_match(leader) || __validate_match(other);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 27 | 100.00% | 1 | 100.00% |
| Total | 27 | 100.00% | 1 | 100.00% |
static int __validate_link(struct hists *hists, int idx)
{
size_t count = 0;
size_t count_pair = 0;
size_t count_dummy = 0;
struct rb_root *root;
struct rb_node *node;
/*
* Leader hists (idx = 0) will have dummy entries from other,
* and some entries will have no pair. However every entry
* in other hists should have (dummy) pair.
*/
if (hists__has(hists, need_collapse))
root = &hists->entries_collapsed;
else
root = hists->entries_in;
node = rb_first(root);
while (node) {
struct hist_entry *he;
he = rb_entry(node, struct hist_entry, rb_node_in);
if (hist_entry__has_pairs(he)) {
if (!find_sample(fake_common_samples,
ARRAY_SIZE(fake_common_samples),
he->thread, he->ms.map, he->ms.sym) &&
!find_sample(fake_samples[idx],
ARRAY_SIZE(fake_samples[idx]),
he->thread, he->ms.map, he->ms.sym)) {
count_dummy++;
}
count_pair++;
} else if (idx) {
pr_debug("A entry from the other hists should have pair\n");
return -1;
}
count++;
node = rb_next(node);
}
/*
* Note that we have a entry collapsed in the other (idx = 1) hists.
*/
if (idx == 0) {
if (count_dummy != ARRAY_SIZE(fake_samples[1]) - 1) {
pr_debug("Invalid count of dummy entries: %zd of %zd\n",
count_dummy, ARRAY_SIZE(fake_samples[1]) - 1);
return -1;
}
if (count != count_pair + ARRAY_SIZE(fake_samples[0])) {
pr_debug("Invalid count of total leader entries: %zd of %zd\n",
count, count_pair + ARRAY_SIZE(fake_samples[0]));
return -1;
}
} else {
if (count != count_pair) {
pr_debug("Invalid count of total other entries: %zd of %zd\n",
count, count_pair);
return -1;
}
if (count_dummy > 0) {
pr_debug("Other hists should not have dummy entries: %zd\n",
count_dummy);
return -1;
}
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 321 | 98.17% | 1 | 50.00% |
| jiri olsa | jiri olsa | 6 | 1.83% | 1 | 50.00% |
| Total | 327 | 100.00% | 2 | 100.00% |
static int validate_link(struct hists *leader, struct hists *other)
{
return __validate_link(leader, 0) || __validate_link(other, 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
int test__hists_link(int subtest __maybe_unused)
{
int err = -1;
struct hists *hists, *first_hists;
struct machines machines;
struct machine *machine = NULL;
struct perf_evsel *evsel, *first;
struct perf_evlist *evlist = perf_evlist__new();
if (evlist == NULL)
return -ENOMEM;
err = parse_events(evlist, "cpu-clock", NULL);
if (err)
goto out;
err = parse_events(evlist, "task-clock", NULL);
if (err)
goto out;
err = TEST_FAIL;
/* default sort order (comm,dso,sym) will be used */
if (setup_sorting(NULL) < 0)
goto out;
machines__init(&machines);
/* setup threads/dso/map/symbols also */
machine = setup_fake_machine(&machines);
if (!machine)
goto out;
if (verbose > 1)
machine__fprintf(machine, stderr);
/* process sample events */
err = add_hist_entries(evlist, machine);
if (err < 0)
goto out;
evlist__for_each_entry(evlist, evsel) {
hists = evsel__hists(evsel);
hists__collapse_resort(hists, NULL);
if (verbose > 2)
print_hists_in(hists);
}
first = perf_evlist__first(evlist);
evsel = perf_evlist__last(evlist);
first_hists = evsel__hists(first);
hists = evsel__hists(evsel);
/* match common entries */
hists__match(first_hists, hists);
err = validate_match(first_hists, hists);
if (err)
goto out;
/* link common and/or dummy entries */
hists__link(first_hists, hists);
err = validate_link(first_hists, hists);
if (err)
goto out;
err = 0;
out:
/* tear down everything */
perf_evlist__delete(evlist);
reset_output_field();
machines__exit(&machines);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 237 | 78.74% | 7 | 50.00% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 56 | 18.60% | 5 | 35.71% |
| jiri olsa | jiri olsa | 4 | 1.33% | 1 | 7.14% |
| wang nan | wang nan | 4 | 1.33% | 1 | 7.14% |
| Total | 301 | 100.00% | 14 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 1474 | 92.30% | 13 | 50.00% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 93 | 5.82% | 8 | 30.77% |
| jiri olsa | jiri olsa | 18 | 1.13% | 3 | 11.54% |
| adrian hunter | adrian hunter | 8 | 0.50% | 1 | 3.85% |
| wang nan | wang nan | 4 | 0.25% | 1 | 3.85% |
| Total | 1597 | 100.00% | 26 | 100.00% |
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