e4aec1b1bd
Those are getting counts.h via evsel.h, that don't strictly need counts.h, just forward declarations for some structs, so add it here before we remove it from there. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-phldqlfxxu563txja7evd4zt@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <errno.h>
|
|
#include <inttypes.h>
|
|
/* For the CPU_* macros */
|
|
#include <pthread.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <api/fs/fs.h>
|
|
#include <linux/err.h>
|
|
#include <api/fs/tracing_path.h>
|
|
#include "evsel.h"
|
|
#include "tests.h"
|
|
#include "thread_map.h"
|
|
#include "cpumap.h"
|
|
#include "debug.h"
|
|
#include "stat.h"
|
|
#include "util/counts.h"
|
|
|
|
int test__openat_syscall_event_on_all_cpus(struct test *test __maybe_unused, int subtest __maybe_unused)
|
|
{
|
|
int err = -1, fd, cpu;
|
|
struct perf_cpu_map *cpus;
|
|
struct evsel *evsel;
|
|
unsigned int nr_openat_calls = 111, i;
|
|
cpu_set_t cpu_set;
|
|
struct perf_thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
|
|
char sbuf[STRERR_BUFSIZE];
|
|
char errbuf[BUFSIZ];
|
|
|
|
if (threads == NULL) {
|
|
pr_debug("thread_map__new\n");
|
|
return -1;
|
|
}
|
|
|
|
cpus = perf_cpu_map__new(NULL);
|
|
if (cpus == NULL) {
|
|
pr_debug("cpu_map__new\n");
|
|
goto out_thread_map_delete;
|
|
}
|
|
|
|
CPU_ZERO(&cpu_set);
|
|
|
|
evsel = perf_evsel__newtp("syscalls", "sys_enter_openat");
|
|
if (IS_ERR(evsel)) {
|
|
tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "syscalls", "sys_enter_openat");
|
|
pr_debug("%s\n", errbuf);
|
|
goto out_cpu_map_delete;
|
|
}
|
|
|
|
if (evsel__open(evsel, cpus, threads) < 0) {
|
|
pr_debug("failed to open counter: %s, "
|
|
"tweak /proc/sys/kernel/perf_event_paranoid?\n",
|
|
str_error_r(errno, sbuf, sizeof(sbuf)));
|
|
goto out_evsel_delete;
|
|
}
|
|
|
|
for (cpu = 0; cpu < cpus->nr; ++cpu) {
|
|
unsigned int ncalls = nr_openat_calls + cpu;
|
|
/*
|
|
* XXX eventually lift this restriction in a way that
|
|
* keeps perf building on older glibc installations
|
|
* without CPU_ALLOC. 1024 cpus in 2010 still seems
|
|
* a reasonable upper limit tho :-)
|
|
*/
|
|
if (cpus->map[cpu] >= CPU_SETSIZE) {
|
|
pr_debug("Ignoring CPU %d\n", cpus->map[cpu]);
|
|
continue;
|
|
}
|
|
|
|
CPU_SET(cpus->map[cpu], &cpu_set);
|
|
if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) {
|
|
pr_debug("sched_setaffinity() failed on CPU %d: %s ",
|
|
cpus->map[cpu],
|
|
str_error_r(errno, sbuf, sizeof(sbuf)));
|
|
goto out_close_fd;
|
|
}
|
|
for (i = 0; i < ncalls; ++i) {
|
|
fd = openat(0, "/etc/passwd", O_RDONLY);
|
|
close(fd);
|
|
}
|
|
CPU_CLR(cpus->map[cpu], &cpu_set);
|
|
}
|
|
|
|
/*
|
|
* Here we need to explicitly preallocate the counts, as if
|
|
* we use the auto allocation it will allocate just for 1 cpu,
|
|
* as we start by cpu 0.
|
|
*/
|
|
if (perf_evsel__alloc_counts(evsel, cpus->nr, 1) < 0) {
|
|
pr_debug("perf_evsel__alloc_counts(ncpus=%d)\n", cpus->nr);
|
|
goto out_close_fd;
|
|
}
|
|
|
|
err = 0;
|
|
|
|
for (cpu = 0; cpu < cpus->nr; ++cpu) {
|
|
unsigned int expected;
|
|
|
|
if (cpus->map[cpu] >= CPU_SETSIZE)
|
|
continue;
|
|
|
|
if (perf_evsel__read_on_cpu(evsel, cpu, 0) < 0) {
|
|
pr_debug("perf_evsel__read_on_cpu\n");
|
|
err = -1;
|
|
break;
|
|
}
|
|
|
|
expected = nr_openat_calls + cpu;
|
|
if (perf_counts(evsel->counts, cpu, 0)->val != expected) {
|
|
pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n",
|
|
expected, cpus->map[cpu], perf_counts(evsel->counts, cpu, 0)->val);
|
|
err = -1;
|
|
}
|
|
}
|
|
|
|
perf_evsel__free_counts(evsel);
|
|
out_close_fd:
|
|
perf_evsel__close_fd(&evsel->core);
|
|
out_evsel_delete:
|
|
evsel__delete(evsel);
|
|
out_cpu_map_delete:
|
|
perf_cpu_map__put(cpus);
|
|
out_thread_map_delete:
|
|
perf_thread_map__put(threads);
|
|
return err;
|
|
}
|