^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <stdbool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <time.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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <bpf/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <bpf/libbpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct pair {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) long long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) __u64 ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static __u64 time_get_ns(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct timespec ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) clock_gettime(CLOCK_MONOTONIC, &ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) return ts.tv_sec * 1000000000ull + ts.tv_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static void print_old_objects(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) long long val = time_get_ns();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) __u64 key, next_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct pair v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) key = write(1, "\e[1;1H\e[2J", 12); /* clear screen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) key = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) while (bpf_map_get_next_key(fd, &key, &next_key) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) bpf_map_lookup_elem(fd, &next_key, &v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) key = next_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) if (val - v.val < 1000000000ll)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* object was allocated more then 1 sec ago */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) printf("obj 0x%llx is %2lldsec old was allocated at ip %llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) next_key, (val - v.val) / 1000000000ll, v.ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int main(int ac, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct bpf_link *links[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct bpf_program *prog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct bpf_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) char filename[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int map_fd, i, j = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (setrlimit(RLIMIT_MEMLOCK, &r)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) perror("setrlimit(RLIMIT_MEMLOCK, RLIM_INFINITY)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) obj = bpf_object__open_file(filename, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (libbpf_get_error(obj)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) fprintf(stderr, "ERROR: opening BPF object file failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* load BPF program */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (bpf_object__load(obj)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) fprintf(stderr, "ERROR: loading BPF object file failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) map_fd = bpf_object__find_map_fd_by_name(obj, "my_map");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (map_fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) fprintf(stderr, "ERROR: finding a map in obj file failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) bpf_object__for_each_program(prog, obj) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) links[j] = bpf_program__attach(prog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (libbpf_get_error(links[j])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) fprintf(stderr, "ERROR: bpf_program__attach failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) links[j] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) j++;
^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++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) print_old_objects(map_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) sleep(1);
^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) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) for (j--; j >= 0; j--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) bpf_link__destroy(links[j]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) bpf_object__close(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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