1 // SPDX-License-Identifier: GPL-2.0-only
13 #include <signal.h>
87 	diff = end.tv_usec - start.tv_usec;  in check_diff()
88 	diff += (end.tv_sec - start.tv_sec) * USEC_PER_SEC;  in check_diff()
90 	if (llabs(diff - DELAY * USEC_PER_SEC) > USEC_PER_SEC / 2) {  in check_diff()
92 		return -1;  in check_diff()
108 		signal(SIGVTALRM, sig_handler);  in check_itimer()
110 		signal(SIGPROF, sig_handler);  in check_itimer()
112 		signal(SIGALRM, sig_handler);  in check_itimer()
139 	timer_t id;  in check_timer_create()  local
143 	if (timer_create(which, NULL, &id) < 0)  in check_timer_create()
146 	if (signal(SIGALRM, sig_handler) == SIG_ERR)  in check_timer_create()
147 		fatal_error(name, "signal()");  in check_timer_create()
152 	if (timer_settime(id, 0, &val, NULL) < 0)  in check_timer_create()
171 	ctd_count--;  in ctd_sighandler()
182 	timer_t id;  in ctd_thread_func()  local
188 	if (timer_create(CLOCK_PROCESS_CPUTIME_ID, NULL, &id))  in ctd_thread_func()
190 	if (timer_settime(id, 0, &val, NULL))  in ctd_thread_func()
195 	if (timer_delete(id))  in ctd_thread_func()
202  * Test that only the running thread receives the timer signal.
206 	if (signal(SIGALRM, ctd_sighandler) == SIG_ERR)  in check_timer_distribution()
207 		fatal_error(NULL, "signal()");  in check_timer_distribution()
216 		ksft_test_result_pass("check signal distribution\n");  in check_timer_distribution()
218 		ksft_test_result_fail("check signal distribution\n");  in check_timer_distribution()
220 		ksft_test_result_skip("check signal distribution (old kernel)\n");  in check_timer_distribution()
230 	struct tmrsig *tsig = si ? si->si_ptr : NULL;  in siginfo_handler()
233 		tsig->signals++;  in siginfo_handler()
234 		tsig->overruns += si->si_overrun;  in siginfo_handler()
279 	/* Block the signal */  in check_sig_ign()
306 	/* Set the signal to be ignored */  in check_sig_ign()
307 	if (signal(SIGUSR1, SIG_IGN) == SIG_ERR)  in check_sig_ign()
308 		fatal_error(NULL, "signal(SIG_IGN)");  in check_sig_ign()
313 		/* Stop the thread first. No signal should be delivered to it */  in check_sig_ign()
326 	/* Unblock it, which should deliver the signal in the !thread case*/  in check_sig_ign()
357 	/* Block the signal */  in check_rearm()
388 	/* Unblock it, which should not deliver a signal */  in check_rearm()
413 	/* Block the signal */  in check_delete()
439 	/* Unblock it, which should not deliver a signal */  in check_delete()
450 	diff = NSEC_PER_SEC * (int64_t)((int) t1.tv_sec - (int) t2.tv_sec);  in calcdiff_ns()
451 	diff += ((int) t1.tv_nsec - (int) t2.tv_nsec);  in calcdiff_ns()
502 	/* Block the signal */  in check_gettime()
562 	/* Block the signal */  in check_overrun()
591 	/* Unblock it, which should deliver a signal */  in check_overrun()