1a43783aeSArnaldo Carvalho de Melo #include <errno.h> 2fd20e811SArnaldo Carvalho de Melo #include <inttypes.h> 3fbf99625SJiri Olsa #include <api/fs/tracing_path.h> 48dd2a131SJiri Olsa #include <linux/err.h> 59a3993d4SArnaldo Carvalho de Melo #include <sys/types.h> 69a3993d4SArnaldo Carvalho de Melo #include <sys/stat.h> 79a3993d4SArnaldo Carvalho de Melo #include <fcntl.h> 8fbb2df23SRiku Voipio #include "thread_map.h" 9fbb2df23SRiku Voipio #include "evsel.h" 10fbb2df23SRiku Voipio #include "debug.h" 11fbb2df23SRiku Voipio #include "tests.h" 12fbb2df23SRiku Voipio 1381f17c90SArnaldo Carvalho de Melo int test__openat_syscall_event(struct test *test __maybe_unused, int subtest __maybe_unused) 14fbb2df23SRiku Voipio { 15fbb2df23SRiku Voipio int err = -1, fd; 16fbb2df23SRiku Voipio struct perf_evsel *evsel; 17fbb2df23SRiku Voipio unsigned int nr_openat_calls = 111, i; 18fbb2df23SRiku Voipio struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX); 19fbb2df23SRiku Voipio char sbuf[STRERR_BUFSIZE]; 20fbf99625SJiri Olsa char errbuf[BUFSIZ]; 21fbb2df23SRiku Voipio 22fbb2df23SRiku Voipio if (threads == NULL) { 23fbb2df23SRiku Voipio pr_debug("thread_map__new\n"); 24fbb2df23SRiku Voipio return -1; 25fbb2df23SRiku Voipio } 26fbb2df23SRiku Voipio 27fbb2df23SRiku Voipio evsel = perf_evsel__newtp("syscalls", "sys_enter_openat"); 288dd2a131SJiri Olsa if (IS_ERR(evsel)) { 29fbf99625SJiri Olsa tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "syscalls", "sys_enter_openat"); 3087191383SNamhyung Kim pr_debug("%s\n", errbuf); 31fbb2df23SRiku Voipio goto out_thread_map_delete; 32fbb2df23SRiku Voipio } 33fbb2df23SRiku Voipio 34fbb2df23SRiku Voipio if (perf_evsel__open_per_thread(evsel, threads) < 0) { 35fbb2df23SRiku Voipio pr_debug("failed to open counter: %s, " 36fbb2df23SRiku Voipio "tweak /proc/sys/kernel/perf_event_paranoid?\n", 37c8b5f2c9SArnaldo Carvalho de Melo str_error_r(errno, sbuf, sizeof(sbuf))); 38fbb2df23SRiku Voipio goto out_evsel_delete; 39fbb2df23SRiku Voipio } 40fbb2df23SRiku Voipio 41fbb2df23SRiku Voipio for (i = 0; i < nr_openat_calls; ++i) { 42fbb2df23SRiku Voipio fd = openat(0, "/etc/passwd", O_RDONLY); 43fbb2df23SRiku Voipio close(fd); 44fbb2df23SRiku Voipio } 45fbb2df23SRiku Voipio 46fbb2df23SRiku Voipio if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { 47fbb2df23SRiku Voipio pr_debug("perf_evsel__read_on_cpu\n"); 48fbb2df23SRiku Voipio goto out_close_fd; 49fbb2df23SRiku Voipio } 50fbb2df23SRiku Voipio 51a6fa0038SJiri Olsa if (perf_counts(evsel->counts, 0, 0)->val != nr_openat_calls) { 52fbb2df23SRiku Voipio pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", 53a6fa0038SJiri Olsa nr_openat_calls, perf_counts(evsel->counts, 0, 0)->val); 54fbb2df23SRiku Voipio goto out_close_fd; 55fbb2df23SRiku Voipio } 56fbb2df23SRiku Voipio 57fbb2df23SRiku Voipio err = 0; 58fbb2df23SRiku Voipio out_close_fd: 59*475fb533SAndi Kleen perf_evsel__close_fd(evsel); 60fbb2df23SRiku Voipio out_evsel_delete: 61fbb2df23SRiku Voipio perf_evsel__delete(evsel); 62fbb2df23SRiku Voipio out_thread_map_delete: 63186fbb74SJiri Olsa thread_map__put(threads); 64fbb2df23SRiku Voipio return err; 65fbb2df23SRiku Voipio } 66