Lines Matching +full:touch +full:- +full:hold +full:- +full:ms

1 // SPDX-License-Identifier: GPL-2.0
9  * Some chunks also taken from the old x86-specific nmi watchdog code, thanks
62  * Should we panic when a soft-lockup or hard-lockup occurs:
177 		 * Prevent multiple hard-lockup reports if one cpu is already
242  * Watchdog-detector specific API.
250 	return -ENODEV;
254  * watchdog_hardlockup_stop - Stop the watchdog for reconfiguration
264  * watchdog_hardlockup_start - Start the watchdog after reconfiguration
270  * - watchdog_enabled
271  * - watchdog_thresh
272  * - watchdog_cpumask
277  * lockup_detector_update_enable - Update the sysctl enable bit
373  * We don't need nanosecond resolution. A granularity of 16ms is
380 	return data_ns >> 24LL; /* 2^24ns ~= 16.8ms */
398 		util = DIV_ROUND_UP(100 * (new_stat - old_stat), sample_period_16);
464 	tail = (tail + NUM_HARDIRQ_REPORT - 1) % NUM_HARDIRQ_REPORT;
486 		{-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}
504 			if (irq_counts_sorted[i].irq == -1)
507 			printk(KERN_CRIT "\t#%u: %-10u\tirq#%d\n",
535  * Hard-lockup warnings should be triggered after just a few seconds. Soft-
582  * touch_softlockup_watchdog_sched - touch watchdog on scheduler stalls
585  * preventing the watchdog task from executing - e.g. the scheduler
648 		 * A poorly behaving BPF scheduler can live-lock the system into
653 			scx_softlockup(now - touch_ts);
657 			return now - touch_ts;
667  * The watchdog feed function - touches the timestamp.
671  * for more than 2*watchdog_thresh seconds then the debug-printout
748 		 * Prevent multiple soft-lockup reports if one cpu is already
760 		pr_emerg("BUG: soft lockup - CPU#%d stuck for %us! [%s:%d]\n",
762 			current->comm, task_pid_nr(current));
801 	hrtimer->function = watchdog_timer_fn;
950  * lockup_detector_cleanup - Cleanup after cpu hotplug or sysctl changes
952  * Caller must not hold the cpu hotplug rwsem.
962  * lockup_detector_soft_poweroff - Interface to stop lockup detector(s)
985  * caller             | table->data points to            | 'which'
986  * -------------------|----------------------------------|-------------------------------
989  * -------------------|----------------------------------|-------------------------------
991  * -------------------|----------------------------------|-------------------------------
997 	int err, old, *param = table->data;
1037 		return -ENOTSUPP;
1215 		if (ret == -ENODEV)
1230  * lockup_detector_retry_init - retry init lockup detector if possible.