https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: ccda4af0f4b92f7b4c308d3acc262f4a7e3affad authored by Linus Torvalds on 11 November 2018, 23:12:31 UTC
Linux 4.20-rc2
Linux 4.20-rc2
Tip revision: ccda4af
tracex4_user.c
/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <stdbool.h>
#include <string.h>
#include <time.h>
#include <linux/bpf.h>
#include <sys/resource.h>
#include <bpf/bpf.h>
#include "bpf_load.h"
struct pair {
long long val;
__u64 ip;
};
static __u64 time_get_ns(void)
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec * 1000000000ull + ts.tv_nsec;
}
static void print_old_objects(int fd)
{
long long val = time_get_ns();
__u64 key, next_key;
struct pair v;
key = write(1, "\e[1;1H\e[2J", 12); /* clear screen */
key = -1;
while (bpf_map_get_next_key(map_fd[0], &key, &next_key) == 0) {
bpf_map_lookup_elem(map_fd[0], &next_key, &v);
key = next_key;
if (val - v.val < 1000000000ll)
/* object was allocated more then 1 sec ago */
continue;
printf("obj 0x%llx is %2lldsec old was allocated at ip %llx\n",
next_key, (val - v.val) / 1000000000ll, v.ip);
}
}
int main(int ac, char **argv)
{
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
char filename[256];
int i;
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
if (setrlimit(RLIMIT_MEMLOCK, &r)) {
perror("setrlimit(RLIMIT_MEMLOCK, RLIM_INFINITY)");
return 1;
}
if (load_bpf_file(filename)) {
printf("%s", bpf_log_buf);
return 1;
}
for (i = 0; ; i++) {
print_old_objects(map_fd[1]);
sleep(1);
}
return 0;
}