1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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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 |