1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <signal.h>
88 	diff = end.tv_usec - start.tv_usec;  in check_diff()
89 	diff += (end.tv_sec - start.tv_sec) * USEC_PER_SEC;  in check_diff()
91 	if (llabs(diff - DELAY * USEC_PER_SEC) > USEC_PER_SEC / 2) {  in check_diff()
93 		return -1;  in check_diff()
109 		signal(SIGVTALRM, sig_handler);  in check_itimer()
111 		signal(SIGPROF, sig_handler);  in check_itimer()
113 		signal(SIGALRM, sig_handler);  in check_itimer()
140 	timer_t id;  in check_timer_create()  local
144 	if (timer_create(which, NULL, &id) < 0)  in check_timer_create()
147 	if (signal(SIGALRM, sig_handler) == SIG_ERR)  in check_timer_create()
148 		fatal_error(name, "signal()");  in check_timer_create()
153 	if (timer_settime(id, 0, &val, NULL) < 0)  in check_timer_create()
172 	ctd_count--;  in ctd_sighandler()
183 	timer_t id;  in ctd_thread_func()  local
189 	if (timer_create(CLOCK_PROCESS_CPUTIME_ID, NULL, &id))  in ctd_thread_func()
191 	if (timer_settime(id, 0, &val, NULL))  in ctd_thread_func()
196 	if (timer_delete(id))  in ctd_thread_func()
203  * Test that only the running thread receives the timer signal.
207 	if (signal(SIGALRM, ctd_sighandler) == SIG_ERR)  in check_timer_distribution()
208 		fatal_error(NULL, "signal()");  in check_timer_distribution()
217 		ksft_test_result_pass("check signal distribution\n");  in check_timer_distribution()
219 		ksft_test_result_fail("check signal distribution\n");  in check_timer_distribution()
221 		ksft_test_result_skip("check signal distribution (old kernel)\n");  in check_timer_distribution()
231 	struct tmrsig *tsig = si ? si->si_ptr : NULL;  in siginfo_handler()
234 		tsig->signals++;  in siginfo_handler()
235 		tsig->overruns += si->si_overrun;  in siginfo_handler()
280 	/* Block the signal */  in check_sig_ign()
307 	/* Set the signal to be ignored */  in check_sig_ign()
308 	if (signal(SIGUSR1, SIG_IGN) == SIG_ERR)  in check_sig_ign()
309 		fatal_error(NULL, "signal(SIG_IGN)");  in check_sig_ign()
314 		/* Stop the thread first. No signal should be delivered to it */  in check_sig_ign()
327 	/* Unblock it, which should deliver the signal in the !thread case*/  in check_sig_ign()
358 	/* Block the signal */  in check_rearm()
389 	/* Unblock it, which should not deliver a signal */  in check_rearm()
414 	/* Block the signal */  in check_delete()
440 	/* Unblock it, which should not deliver a signal */  in check_delete()
451 	diff = NSEC_PER_SEC * (int64_t)((int) t1.tv_sec - (int) t2.tv_sec);  in calcdiff_ns()
452 	diff += ((int) t1.tv_nsec - (int) t2.tv_nsec);  in calcdiff_ns()
503 	/* Block the signal */  in check_gettime()
563 	/* Block the signal */  in check_overrun()
592 	/* Unblock it, which should deliver a signal */  in check_overrun()
605 static int do_timer_create(int *id)  in do_timer_create()  argument
607 	return syscall(__NR_timer_create, CLOCK_MONOTONIC, NULL, id);  in do_timer_create()
610 static int do_timer_delete(int id)  in do_timer_delete()  argument
612 	return syscall(__NR_timer_delete, id);  in do_timer_delete()
624 	int id;  in check_timer_create_exact()  local
640 	id = 8;  in check_timer_create_exact()
641 	if (do_timer_create(&id) < 0)  in check_timer_create_exact()
644 	if (do_timer_delete(id))  in check_timer_create_exact()
653 	if (id != 8) {  in check_timer_create_exact()
654 		ksft_test_result_fail("check timer create exact %d != 8\n", id);  in check_timer_create_exact()
658 	/* Validate that it went back to normal mode and allocates ID 9 */  in check_timer_create_exact()
659 	if (do_timer_create(&id) < 0)  in check_timer_create_exact()
662 	if (do_timer_delete(id))  in check_timer_create_exact()
665 	if (id == 9)  in check_timer_create_exact()