forked from Minki/linux
2bf3e2ef42
There are two files in the tree called libbpf.h which is becoming problematic. Most samples don't actually need the local libbpf.h they simply include it to get to bpf/bpf.h. Include bpf/bpf.h directly instead. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <string.h>
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#include <time.h>
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#include <linux/bpf.h>
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#include <sys/resource.h>
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#include <bpf/bpf.h>
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#include "bpf_load.h"
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struct pair {
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long long val;
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__u64 ip;
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};
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static __u64 time_get_ns(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000ull + ts.tv_nsec;
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}
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static void print_old_objects(int fd)
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{
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long long val = time_get_ns();
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__u64 key, next_key;
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struct pair v;
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key = write(1, "\e[1;1H\e[2J", 12); /* clear screen */
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key = -1;
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while (bpf_map_get_next_key(map_fd[0], &key, &next_key) == 0) {
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bpf_map_lookup_elem(map_fd[0], &next_key, &v);
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key = next_key;
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if (val - v.val < 1000000000ll)
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/* object was allocated more then 1 sec ago */
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continue;
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printf("obj 0x%llx is %2lldsec old was allocated at ip %llx\n",
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next_key, (val - v.val) / 1000000000ll, v.ip);
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}
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}
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int main(int ac, char **argv)
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{
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struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
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char filename[256];
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int i;
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snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
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if (setrlimit(RLIMIT_MEMLOCK, &r)) {
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perror("setrlimit(RLIMIT_MEMLOCK, RLIM_INFINITY)");
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return 1;
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}
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if (load_bpf_file(filename)) {
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printf("%s", bpf_log_buf);
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return 1;
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}
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for (i = 0; ; i++) {
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print_old_objects(map_fd[1]);
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sleep(1);
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}
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return 0;
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}
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