selftests/timers: Add alarmtimer-suspend test from timetests suite (b7bb8442) · Commits · e / devices / android_kernel_oneplus_sm8150

tools/testing/selftests/timers/Makefile

+4 −2

Original line number	Original line	Diff line number	Diff line
	@@ -3,7 +3,8 @@ BUILD_FLAGS = -DKTEST
	CFLAGS += -O3 -Wl,-no-as-needed -Wall $(BUILD_FLAGS)		CFLAGS += -O3 -Wl,-no-as-needed -Wall $(BUILD_FLAGS)
	LDFLAGS += -lrt -lpthread		LDFLAGS += -lrt -lpthread
	bins = posix_timers nanosleep inconsistency-check nsleep-lat raw_skew \		bins = posix_timers nanosleep inconsistency-check nsleep-lat raw_skew \
	set-timer-lat threadtest mqueue-lat valid-adjtimex		set-timer-lat threadtest mqueue-lat valid-adjtimex \
			alarmtimer-suspend

	all: ${bins}		all: ${bins}

	@@ -22,7 +23,8 @@ run_tests: all
	# these tests require escalated privledges		# these tests require escalated privledges
	# and may modify the system time or trigger		# and may modify the system time or trigger
	# other behavior like suspend		# other behavior like suspend
	run_destructive_tests: all		run_destructive_tests: run_tests
			./alarmtimer-suspend
	./valid-adjtimex		./valid-adjtimex

	clean:		clean:

tools/testing/selftests/timers/alarmtimer-suspend.c

0 → 100644

+185 −0

Original line number	Original line	Diff line number	Diff line
			/* alarmtimer suspend test
			* John Stultz (john.stultz@linaro.org)
			* (C) Copyright Linaro 2013
			* Licensed under the GPLv2
			*
			* This test makes sure the alarmtimer & RTC wakeup code is
			* functioning.
			*
			* To build:
			* $ gcc alarmtimer-suspend.c -o alarmtimer-suspend -lrt
			*
			* This program is free software: you can redistribute it and/or modify
			* it under the terms of the GNU General Public License as published by
			* the Free Software Foundation, either version 2 of the License, or
			* (at your option) any later version.
			*
			* This program is distributed in the hope that it will be useful,
			* but WITHOUT ANY WARRANTY; without even the implied warranty of
			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
			* GNU General Public License for more details.
			*/


			#include <stdio.h>
			#include <unistd.h>
			#include <time.h>
			#include <string.h>
			#include <signal.h>
			#include <stdlib.h>
			#include <pthread.h>
			#ifdef KTEST
			#include "../kselftest.h"
			#else
			static inline int ksft_exit_pass(void)
			{
			exit(0);
			}
			static inline int ksft_exit_fail(void)
			{
			exit(1);
			}
			#endif

			#define CLOCK_REALTIME 0
			#define CLOCK_MONOTONIC 1
			#define CLOCK_PROCESS_CPUTIME_ID 2
			#define CLOCK_THREAD_CPUTIME_ID 3
			#define CLOCK_MONOTONIC_RAW 4
			#define CLOCK_REALTIME_COARSE 5
			#define CLOCK_MONOTONIC_COARSE 6
			#define CLOCK_BOOTTIME 7
			#define CLOCK_REALTIME_ALARM 8
			#define CLOCK_BOOTTIME_ALARM 9
			#define CLOCK_HWSPECIFIC 10
			#define CLOCK_TAI 11
			#define NR_CLOCKIDS 12


			#define NSEC_PER_SEC 1000000000ULL
			#define UNREASONABLE_LAT (NSEC_PER_SEC * 4) /* hopefully we resume in 4secs */

			#define SUSPEND_SECS 15
			int alarmcount;
			int alarm_clock_id;
			struct timespec start_time;


			char *clockstring(int clockid)
			{
			switch (clockid) {
			case CLOCK_REALTIME:
			return "CLOCK_REALTIME";
			case CLOCK_MONOTONIC:
			return "CLOCK_MONOTONIC";
			case CLOCK_PROCESS_CPUTIME_ID:
			return "CLOCK_PROCESS_CPUTIME_ID";
			case CLOCK_THREAD_CPUTIME_ID:
			return "CLOCK_THREAD_CPUTIME_ID";
			case CLOCK_MONOTONIC_RAW:
			return "CLOCK_MONOTONIC_RAW";
			case CLOCK_REALTIME_COARSE:
			return "CLOCK_REALTIME_COARSE";
			case CLOCK_MONOTONIC_COARSE:
			return "CLOCK_MONOTONIC_COARSE";
			case CLOCK_BOOTTIME:
			return "CLOCK_BOOTTIME";
			case CLOCK_REALTIME_ALARM:
			return "CLOCK_REALTIME_ALARM";
			case CLOCK_BOOTTIME_ALARM:
			return "CLOCK_BOOTTIME_ALARM";
			case CLOCK_TAI:
			return "CLOCK_TAI";
			};
			return "UNKNOWN_CLOCKID";
			}


			long long timespec_sub(struct timespec a, struct timespec b)
			{
			long long ret = NSEC_PER_SEC * b.tv_sec + b.tv_nsec;

			ret -= NSEC_PER_SEC * a.tv_sec + a.tv_nsec;
			return ret;
			}

			int final_ret = 0;

			void sigalarm(int signo)
			{
			long long delta_ns;
			struct timespec ts;

			clock_gettime(alarm_clock_id, &ts);
			alarmcount++;

			delta_ns = timespec_sub(start_time, ts);
			delta_ns -= NSEC_PER_SEC * SUSPEND_SECS * alarmcount;

			printf("ALARM(%i): %ld:%ld latency: %lld ns ", alarmcount, ts.tv_sec,
			ts.tv_nsec, delta_ns);

			if (delta_ns > UNREASONABLE_LAT) {
			printf("[FAIL]\n");
			final_ret = -1;
			} else
			printf("[OK]\n");

			}

			int main(void)
			{
			timer_t tm1;
			struct itimerspec its1, its2;
			struct sigevent se;
			struct sigaction act;
			int signum = SIGRTMAX;

			/* Set up signal handler: */
			sigfillset(&act.sa_mask);
			act.sa_flags = 0;
			act.sa_handler = sigalarm;
			sigaction(signum, &act, NULL);

			/* Set up timer: */
			memset(&se, 0, sizeof(se));
			se.sigev_notify = SIGEV_SIGNAL;
			se.sigev_signo = signum;
			se.sigev_value.sival_int = 0;

			for (alarm_clock_id = CLOCK_REALTIME_ALARM;
			alarm_clock_id <= CLOCK_BOOTTIME_ALARM;
			alarm_clock_id++) {

			alarmcount = 0;
			timer_create(alarm_clock_id, &se, &tm1);

			clock_gettime(alarm_clock_id, &start_time);
			printf("Start time (%s): %ld:%ld\n", clockstring(alarm_clock_id),
			start_time.tv_sec, start_time.tv_nsec);
			printf("Setting alarm for every %i seconds\n", SUSPEND_SECS);
			its1.it_value = start_time;
			its1.it_value.tv_sec += SUSPEND_SECS;
			its1.it_interval.tv_sec = SUSPEND_SECS;
			its1.it_interval.tv_nsec = 0;

			timer_settime(tm1, TIMER_ABSTIME, &its1, &its2);

			while (alarmcount < 5)
			sleep(1); /* First 5 alarms, do nothing */

			printf("Starting suspend loops\n");
			while (alarmcount < 10) {
			int ret;

			sleep(1);
			ret = system("echo mem > /sys/power/state");
			if (ret)
			break;
			}
			timer_delete(tm1);
			}
			if (final_ret)
			return ksft_exit_fail();
			return ksft_exit_pass();
			}