Lines Matching +full:clock +full:- +full:duration +full:- +full:ns
1 // SPDX-License-Identifier: GPL-2.0
9 * Some chunks also taken from the old x86-specific nmi watchdog code, thanks
29 #include <linux/sched/clock.h>
62 * Should we panic when a soft-lockup or hard-lockup occurs:
177 * Prevent multiple hard-lockup reports if one cpu is already in watchdog_hardlockup_check()
242 * Watchdog-detector specific API.
250 return -ENODEV; in watchdog_hardlockup_probe()
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
380 return data_ns >> 24LL; /* 2^24ns ~= 16.8ms */ in get_16bit_precision()
398 util = DIV_ROUND_UP(100 * (new_stat - old_stat), sample_period_16); in update_cpustat()
464 tail = (tail + NUM_HARDIRQ_REPORT - 1) % NUM_HARDIRQ_REPORT; in need_counting_irqs()
486 {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0} in print_irq_counts()
504 if (irq_counts_sorted[i].irq == -1) in print_irq_counts()
507 printk(KERN_CRIT "\t#%u: %-10u\tirq#%d\n", in print_irq_counts()
535 * Hard-lockup warnings should be triggered after just a few seconds. Soft-
549 * 2^30ns == 1.074s.
559 * convert watchdog_thresh from seconds to ns in set_sample_period()
582 * touch_softlockup_watchdog_sched - touch watchdog on scheduler stalls
585 * preventing the watchdog task from executing - e.g. the scheduler
649 return now - touch_ts; in is_softlockup()
659 * The watchdog feed function - touches the timestamp.
663 * for more than 2*watchdog_thresh seconds then the debug-printout
680 int duration; in watchdog_timer_fn() local
737 duration = is_softlockup(touch_ts, period_ts, now); in watchdog_timer_fn()
738 if (unlikely(duration)) { in watchdog_timer_fn()
740 * Prevent multiple soft-lockup reports if one cpu is already in watchdog_timer_fn()
752 pr_emerg("BUG: soft lockup - CPU#%d stuck for %us! [%s:%d]\n", in watchdog_timer_fn()
753 smp_processor_id(), duration, in watchdog_timer_fn()
754 current->comm, task_pid_nr(current)); in watchdog_timer_fn()
793 hrtimer->function = watchdog_timer_fn; in watchdog_enable()
942 * lockup_detector_cleanup - Cleanup after cpu hotplug or sysctl changes
954 * lockup_detector_soft_poweroff - Interface to stop lockup detector(s)
977 * caller | table->data points to | 'which'
978 * -------------------|----------------------------------|-------------------------------
981 * -------------------|----------------------------------|-------------------------------
983 * -------------------|----------------------------------|-------------------------------
989 int err, old, *param = table->data; in proc_watchdog_common()
1028 return -ENOTSUPP; in proc_nmi_watchdog()
1206 if (ret == -ENODEV) in lockup_detector_delay_init()
1221 * lockup_detector_retry_init - retry init lockup detector if possible.