Revert "[nrf fromlist] tests: drivers: timer: nrf_grtc_timer: Add stress test"

This reverts commit 6bbe5d6.

Signed-off-by: Krzysztof Chruściński <[email protected]>

Author: nordic-krch

tests/drivers/timer/nrf_grtc_timer/boards/nrf54h20dk_nrf54h20_cpuapp.overlay

@@ -2,21 +2,4 @@
 
 &grtc {
 	/delete-property/ child-owned-channels;
-	interrupts = <109 2>;
-};
-
-test_timer: &timer131 {
-	status = "okay";
-	interrupts = <419 1>;
-};
-
-&timer130 {
-	status = "okay";
-	prescaler = <0>;
-};
-
-/ {
-	chosen {
-		zephyr,cpu-load-counter = &timer130;
-	};
 };

tests/drivers/timer/nrf_grtc_timer/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

@@ -1,8 +1,2 @@
 CONFIG_ZTEST=y
 CONFIG_NRF_GRTC_TIMER=y
-CONFIG_COUNTER=y
-CONFIG_TEST_RANDOM_GENERATOR=y
-CONFIG_XOSHIRO_RANDOM_GENERATOR=y
-CONFIG_LOG_PRINTK=y
-CONFIG_CPU_LOAD=y
-CONFIG_CPU_LOAD_USE_COUNTER=y

tests/drivers/timer/nrf_grtc_timer/boards/nrf54l15dk_nrf54l15_cpuflpr.overlay

@@ -5,15 +5,7 @@
  */
 #include <zephyr/ztest.h>
 #include <zephyr/drivers/timer/nrf_grtc_timer.h>
-#include <zephyr/drivers/counter.h>
-#include <zephyr/drivers/timer/system_timer.h>
-#include <zephyr/random/random.h>
-#include <zephyr/logging/log.h>
-#include <zephyr/busy_sim.h>
-#include <zephyr/debug/cpu_load.h>
-#include <nrfx_grtc.h>
 #include <hal/nrf_grtc.h>
-LOG_MODULE_REGISTER(test, 1);
 
 #define GRTC_SLEW_TICKS 10
 #define NUMBER_OF_TRIES 2000
@@ -161,243 +153,4 @@ ZTEST(nrf_grtc_timer, test_timer_abort_in_compare_mode)
 	z_nrf_grtc_timer_chan_free(channel);
 }
 
-enum test_timer_state {
-	TIMER_IDLE,
-	TIMER_PREPARE,
-	TIMER_ACTIVE
-};
-
-enum test_ctx {
-	TEST_HIGH_PRI,
-	TEST_TIMER_CB,
-	TEST_THREAD
-};
-
-struct test_grtc_timer {
-	struct k_timer timer;
-	uint32_t ticks;
-	uint32_t expire;
-	uint32_t start_cnt;
-	uint32_t expire_cnt;
-	uint32_t abort_cnt;
-	uint32_t exp_expire;
-	int max_late;
-	int min_late;
-	int avg_late;
-	uint32_t early_cnt;
-	enum test_timer_state state;
-};
-
-static atomic_t test_active_cnt;
-static struct test_grtc_timer timers[8];
-static uint32_t test_end;
-static k_tid_t test_tid;
-static volatile bool test_run;
-static uint32_t ctx_cnt[3];
-static const char *const ctx_name[] = { "HIGH PRIO ISR", "TIMER CALLBACK", "THREAD" };
-
-static bool stress_test_action(int ctx, int id)
-{
-	struct test_grtc_timer *timer = &timers[id];
-
-	ctx_cnt[ctx]++;
-	if (timer->state == TIMER_ACTIVE) {
-		/* Aborting soon to expire timers from higher interrupt priority may lead
-		 * to test failures.
-		 */
-		if (ctx == 0 && (k_timer_remaining_get(&timer->timer) < 5)) {
-			return true;
-		}
-
-		if (timer->abort_cnt < timer->expire_cnt / 2) {
-			bool any_active;
-
-			timer->state = TIMER_PREPARE;
-			k_timer_stop(&timer->timer);
-			timer->abort_cnt++;
-			any_active = atomic_dec(&test_active_cnt) > 1;
-			timer->state = TIMER_IDLE;
-
-			return any_active;
-		}
-	} else if (timer->state == TIMER_IDLE) {
-		int ticks = 10 + (sys_rand32_get() & 0x3F);
-		k_timeout_t t = K_TICKS(ticks);
-
-		timer->exp_expire =  k_ticks_to_cyc_floor32(sys_clock_tick_get_32() + ticks);
-		timer->state = TIMER_PREPARE;
-		timer->ticks = ticks;
-		k_timer_start(&timer->timer, t, K_NO_WAIT);
-		atomic_inc(&test_active_cnt);
-		timer->start_cnt++;
-		timer->state = TIMER_ACTIVE;
-	}
-
-	return true;
-}
-
-static void stress_test_actions(int ctx)
-{
-	uint32_t r = sys_rand32_get();
-	int action_cnt = Z_MAX(r & 0x3, 1);
-	int tmr_id = (r >> 8) % ARRAY_SIZE(timers);
-
-	/* Occasionally wake thread context from which timer actions are also executed. */
-	if ((((r >> 2) & 0x3) == 0) || test_active_cnt < 2) {
-		LOG_DBG("ctx:%d thread wakeup", ctx);
-		k_wakeup(test_tid);
-	}
-
-	for (int i = 0; i < action_cnt; i++) {
-		if (stress_test_action(ctx, tmr_id) == false) {
-			stress_test_action(ctx, tmr_id);
-		}
-	}
-}
-
-static void timer_cb(struct k_timer *timer)
-{
-	struct test_grtc_timer *test_timer = CONTAINER_OF(timer, struct test_grtc_timer, timer);
-	uint32_t now = k_cycle_get_32();
-	int diff = now - test_timer->exp_expire;
-
-	atomic_dec(&test_active_cnt);
-	zassert_true(diff >= 0);
-	test_timer->max_late = MAX(diff, test_timer->max_late);
-	test_timer->min_late = MIN(diff, test_timer->min_late);
-
-	if (test_timer->expire_cnt == 0) {
-		test_timer->avg_late = diff;
-	} else {
-		test_timer->avg_late = (test_timer->avg_late * test_timer->expire_cnt + diff) /
-				(test_timer->expire_cnt + 1);
-	}
-
-	test_timer->expire_cnt++;
-	test_timer->state = TIMER_IDLE;
-
-	if (test_run) {
-		stress_test_actions(TEST_TIMER_CB);
-	}
-}
-
-static void counter_set(const struct device *dev, struct counter_alarm_cfg *cfg)
-{
-	int err;
-	uint32_t us = 150 + (sys_rand32_get() & 0x3F);
-
-	cfg->ticks = counter_us_to_ticks(dev, us);
-	err = counter_set_channel_alarm(dev, 0, cfg);
-	zassert_equal(err, 0);
-}
-
-static void counter_cb(const struct device *dev, uint8_t chan_id, uint32_t ticks, void *user_data)
-{
-	struct counter_alarm_cfg *config = user_data;
-
-	if (test_run) {
-		stress_test_actions(TEST_HIGH_PRI);
-		counter_set(dev, config);
-	}
-}
-
-static void report_progress(uint32_t start, uint32_t end)
-{
-	static uint32_t next_report;
-	static uint32_t step;
-	static uint32_t progress;
-
-	if (next_report == 0) {
-		step = (end - start) / 10;
-		next_report = start + step;
-	}
-
-	if (k_uptime_get_32() > next_report) {
-		next_report += step;
-		progress += 10;
-		printk("%d%%\r", progress);
-	}
-}
-
-static void grtc_stress_test(bool busy_sim_en)
-{
-	static struct counter_alarm_cfg alarm_cfg;
-#if DT_NODE_EXISTS(DT_NODELABEL(test_timer)) && DT_NODE_HAS_STATUS(DT_NODELABEL(test_timer), okay)
-	const struct device *const counter_dev = DEVICE_DT_GET(DT_NODELABEL(test_timer));
-#else
-	const struct device *const counter_dev = NULL;
-#endif
-	uint32_t test_ms = 5000;
-	uint32_t test_start = k_uptime_get_32();
-	uint32_t load;
-
-	test_end = k_cycle_get_32() + k_ms_to_cyc_floor32(test_ms);
-	test_tid = k_current_get();
-
-	for (size_t i = 0; i < ARRAY_SIZE(timers); i++) {
-		k_timer_init(&timers[i].timer, timer_cb, NULL);
-	}
-
-	if (IS_ENABLED(CONFIG_CPU_LOAD)) {
-		(void)cpu_load_get(true);
-	}
-
-	if (counter_dev) {
-		counter_start(counter_dev);
-	}
-
-	alarm_cfg.callback = counter_cb;
-	alarm_cfg.user_data = &alarm_cfg;
-	test_run = true;
-
-	if (counter_dev) {
-		counter_set(counter_dev, &alarm_cfg);
-	}
-
-	if (busy_sim_en) {
-		busy_sim_start(500, 200, 1000, 400, NULL);
-	}
-
-	LOG_DBG("Starting test, will end at %d", test_end);
-	while (k_cycle_get_32() < test_end) {
-		report_progress(test_start, test_start + test_ms);
-		stress_test_actions(TEST_THREAD);
-		k_sleep(K_MSEC(test_ms));
-	}
-
-	load = IS_ENABLED(CONFIG_CPU_LOAD) ? cpu_load_get(true) : 0;
-
-	test_run = false;
-	k_msleep(50);
-
-	for (size_t i = 0; i < ARRAY_SIZE(timers); i++) {
-		zassert_equal(timers[i].state, TIMER_IDLE, "Unexpected timer %d state:%d",
-				i, timers[i].state);
-		TC_PRINT("Timer%d (%p)\r\n\tstart_cnt:%d abort_cnt:%d expire_cnt:%d\n",
-			i, &timers[i], timers[i].start_cnt, timers[i].abort_cnt,
-			timers[i].expire_cnt);
-		TC_PRINT("\tavarage late:%d ticks, max late:%d, min late:%d early:%d\n",
-				timers[i].avg_late, timers[i].max_late, timers[i].min_late,
-				timers[i].early_cnt);
-	}
-
-	for (size_t i = 0; i < ARRAY_SIZE(ctx_cnt); i++) {
-		TC_PRINT("Context: %s executed %d times\n", ctx_name[i], ctx_cnt[i]);
-	}
-	TC_PRINT("CPU load during test:%d.%d\n", load / 10, load % 10);
-
-	if (busy_sim_en) {
-		busy_sim_stop();
-	}
-
-	if (counter_dev) {
-		counter_stop(counter_dev);
-	}
-}
-
-ZTEST(nrf_grtc_timer, test_stress)
-{
-	grtc_stress_test(false);
-}
-
 ZTEST_SUITE(nrf_grtc_timer, NULL, NULL, NULL, NULL, NULL);