| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #include <math.h> |
| 3 | #include <signal.h> |
| 4 | #include <stdlib.h> |
| 5 | #include <unistd.h> |
| 6 | #include <linux/compiler.h> |
| 7 | #include <sys/wait.h> |
| 8 | #include "../tests.h" |
| 9 | |
| 10 | static volatile sig_atomic_t done; |
| 11 | |
| 12 | static void sighandler(int sig __maybe_unused) |
| 13 | { |
| 14 | done = 1; |
| 15 | } |
| 16 | |
| 17 | static int __sqrtloop(int sec) |
| 18 | { |
| 19 | signal(SIGALRM, sighandler); |
| 20 | alarm(sec); |
| 21 | |
| 22 | while (!done) |
| 23 | (void)sqrt(rand()); |
| 24 | return 0; |
| 25 | } |
| 26 | |
| 27 | static int sqrtloop(int argc, const char **argv) |
| 28 | { |
| 29 | int sec = 1; |
| 30 | |
| 31 | if (argc > 0) |
| 32 | sec = atoi(argv[0]); |
| 33 | |
| 34 | switch (fork()) { |
| 35 | case 0: |
| 36 | return __sqrtloop(sec); |
| 37 | case -1: |
| 38 | return -1; |
| 39 | default: |
| 40 | wait(NULL); |
| 41 | } |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | DEFINE_WORKLOAD(sqrtloop); |
| 46 |