^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <inttypes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) /* For the CPU_* macros */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <pthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <api/fs/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <api/fs/tracing_path.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "evsel.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "tests.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "thread_map.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <perf/cpumap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <internal/cpumap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "stat.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "util/counts.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int test__openat_syscall_event_on_all_cpus(struct test *test __maybe_unused, int subtest __maybe_unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) int err = -1, fd, cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct perf_cpu_map *cpus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct evsel *evsel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) unsigned int nr_openat_calls = 111, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) cpu_set_t cpu_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct perf_thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) char sbuf[STRERR_BUFSIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) char errbuf[BUFSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) if (threads == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) pr_debug("thread_map__new\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) cpus = perf_cpu_map__new(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (cpus == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) pr_debug("perf_cpu_map__new\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) goto out_thread_map_delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) CPU_ZERO(&cpu_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) evsel = evsel__newtp("syscalls", "sys_enter_openat");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (IS_ERR(evsel)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "syscalls", "sys_enter_openat");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) pr_debug("%s\n", errbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) goto out_cpu_map_delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (evsel__open(evsel, cpus, threads) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) pr_debug("failed to open counter: %s, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) "tweak /proc/sys/kernel/perf_event_paranoid?\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) str_error_r(errno, sbuf, sizeof(sbuf)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) goto out_evsel_delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) for (cpu = 0; cpu < cpus->nr; ++cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) unsigned int ncalls = nr_openat_calls + cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * XXX eventually lift this restriction in a way that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * keeps perf building on older glibc installations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * without CPU_ALLOC. 1024 cpus in 2010 still seems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * a reasonable upper limit tho :-)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (cpus->map[cpu] >= CPU_SETSIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) pr_debug("Ignoring CPU %d\n", cpus->map[cpu]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) CPU_SET(cpus->map[cpu], &cpu_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) pr_debug("sched_setaffinity() failed on CPU %d: %s ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) cpus->map[cpu],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) str_error_r(errno, sbuf, sizeof(sbuf)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) goto out_close_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) for (i = 0; i < ncalls; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) fd = openat(0, "/etc/passwd", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) CPU_CLR(cpus->map[cpu], &cpu_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Here we need to explicitly preallocate the counts, as if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * we use the auto allocation it will allocate just for 1 cpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * as we start by cpu 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (evsel__alloc_counts(evsel, cpus->nr, 1) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) pr_debug("evsel__alloc_counts(ncpus=%d)\n", cpus->nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) goto out_close_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) for (cpu = 0; cpu < cpus->nr; ++cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) unsigned int expected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (cpus->map[cpu] >= CPU_SETSIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (evsel__read_on_cpu(evsel, cpu, 0) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) pr_debug("evsel__read_on_cpu\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) expected = nr_openat_calls + cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (perf_counts(evsel->counts, cpu, 0)->val != expected) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) pr_debug("evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) expected, cpus->map[cpu], perf_counts(evsel->counts, cpu, 0)->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) evsel__free_counts(evsel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) out_close_fd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) perf_evsel__close_fd(&evsel->core);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) out_evsel_delete:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) evsel__delete(evsel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) out_cpu_map_delete:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) perf_cpu_map__put(cpus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) out_thread_map_delete:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) perf_thread_map__put(threads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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