^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) #define _GNU_SOURCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <assert.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/perf_event.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <sys/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <sys/resource.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <sys/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <sys/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <bpf/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <bpf/libbpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "perf-sys.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define SAMPLE_PERIOD 0x7fffffffffffffffULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* counters, values, values2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int map_fd[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static void check_on_cpu(int cpu, struct perf_event_attr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct bpf_perf_event_value value2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int pmu_fd, error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) cpu_set_t set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) __u64 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* Move to target CPU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) CPU_ZERO(&set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) CPU_SET(cpu, &set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) assert(sched_setaffinity(0, sizeof(set), &set) == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* Open perf event and attach to the perf_event_array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) pmu_fd = sys_perf_event_open(attr, -1/*pid*/, cpu/*cpu*/, -1/*group_fd*/, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (pmu_fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) fprintf(stderr, "sys_perf_event_open failed on CPU %d\n", cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) error = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) goto on_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) assert(bpf_map_update_elem(map_fd[0], &cpu, &pmu_fd, BPF_ANY) == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) assert(ioctl(pmu_fd, PERF_EVENT_IOC_ENABLE, 0) == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Trigger the kprobe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) bpf_map_get_next_key(map_fd[1], &cpu, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Check the value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (bpf_map_lookup_elem(map_fd[1], &cpu, &value)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) fprintf(stderr, "Value missing for CPU %d\n", cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) error = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) goto on_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) fprintf(stderr, "CPU %d: %llu\n", cpu, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* The above bpf_map_lookup_elem should trigger the second kprobe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (bpf_map_lookup_elem(map_fd[2], &cpu, &value2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) fprintf(stderr, "Value2 missing for CPU %d\n", cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) error = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) goto on_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) fprintf(stderr, "CPU %d: counter: %llu, enabled: %llu, running: %llu\n", cpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) value2.counter, value2.enabled, value2.running);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) on_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) assert(bpf_map_delete_elem(map_fd[0], &cpu) == 0 || error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) assert(ioctl(pmu_fd, PERF_EVENT_IOC_DISABLE, 0) == 0 || error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) assert(close(pmu_fd) == 0 || error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) assert(bpf_map_delete_elem(map_fd[1], &cpu) == 0 || error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) exit(error);
^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) static void test_perf_event_array(struct perf_event_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) int i, status, nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) pid_t pid[nr_cpus];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) printf("Test reading %s counters\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) for (i = 0; i < nr_cpus; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) pid[i] = fork();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) assert(pid[i] >= 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (pid[i] == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) check_on_cpu(i, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) for (i = 0; i < nr_cpus; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) assert(waitpid(pid[i], &status, 0) == pid[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) err |= status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) printf("Test: %s FAILED\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static void test_bpf_perf_event(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct perf_event_attr attr_cycles = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .freq = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .sample_period = SAMPLE_PERIOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .inherit = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .type = PERF_TYPE_HARDWARE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .read_format = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .sample_type = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .config = PERF_COUNT_HW_CPU_CYCLES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct perf_event_attr attr_clock = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .freq = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .sample_period = SAMPLE_PERIOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .inherit = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .type = PERF_TYPE_SOFTWARE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .read_format = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .sample_type = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .config = PERF_COUNT_SW_CPU_CLOCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct perf_event_attr attr_raw = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .freq = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .sample_period = SAMPLE_PERIOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .inherit = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .type = PERF_TYPE_RAW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .read_format = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .sample_type = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /* Intel Instruction Retired */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .config = 0xc0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct perf_event_attr attr_l1d_load = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .freq = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .sample_period = SAMPLE_PERIOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .inherit = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .type = PERF_TYPE_HW_CACHE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .read_format = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .sample_type = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .config =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) PERF_COUNT_HW_CACHE_L1D |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) (PERF_COUNT_HW_CACHE_OP_READ << 8) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct perf_event_attr attr_llc_miss = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .freq = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .sample_period = SAMPLE_PERIOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .inherit = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .type = PERF_TYPE_HW_CACHE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) .read_format = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .sample_type = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .config =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) PERF_COUNT_HW_CACHE_LL |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) (PERF_COUNT_HW_CACHE_OP_READ << 8) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct perf_event_attr attr_msr_tsc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .freq = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .sample_period = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .inherit = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* From /sys/bus/event_source/devices/msr/ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .type = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .read_format = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .sample_type = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .config = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) test_perf_event_array(&attr_cycles, "HARDWARE-cycles");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) test_perf_event_array(&attr_clock, "SOFTWARE-clock");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) test_perf_event_array(&attr_raw, "RAW-instruction-retired");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) test_perf_event_array(&attr_l1d_load, "HW_CACHE-L1D-load");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /* below tests may fail in qemu */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) test_perf_event_array(&attr_llc_miss, "HW_CACHE-LLC-miss");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) test_perf_event_array(&attr_msr_tsc, "Dynamic-msr-tsc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) int main(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct bpf_link *links[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct bpf_program *prog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct bpf_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) char filename[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) setrlimit(RLIMIT_MEMLOCK, &r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) obj = bpf_object__open_file(filename, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (libbpf_get_error(obj)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) fprintf(stderr, "ERROR: opening BPF object file failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /* load BPF program */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) if (bpf_object__load(obj)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) fprintf(stderr, "ERROR: loading BPF object file failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) map_fd[0] = bpf_object__find_map_fd_by_name(obj, "counters");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) map_fd[1] = bpf_object__find_map_fd_by_name(obj, "values");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) map_fd[2] = bpf_object__find_map_fd_by_name(obj, "values2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (map_fd[0] < 0 || map_fd[1] < 0 || map_fd[2] < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) fprintf(stderr, "ERROR: finding a map in obj file failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) bpf_object__for_each_program(prog, obj) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) links[i] = bpf_program__attach(prog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (libbpf_get_error(links[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) fprintf(stderr, "ERROR: bpf_program__attach failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) links[i] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) test_bpf_perf_event();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) for (i--; i >= 0; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) bpf_link__destroy(links[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) bpf_object__close(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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