Lines Matching refs:grace
40 - Anything that prevents RCU's grace-period kthreads from running.
51 in which case the next RCU grace period can never complete, which
60 RCU grace periods from ever completing. Either way, the
120 Please note that RCU only detects CPU stalls when there is a grace period
121 in progress. No grace period, no CPU stall warnings.
140 CPU stall detector, which detects conditions that unduly delay RCU grace
150 that RCU will wait from the beginning of a grace period until it
170 the expedited grace period. This parameter defines the period
172 grace period until it issues an RCU CPU stall warning. This time
218 task stalling the current RCU-tasks grace period.
247 the RCU core for the past three grace periods. In contrast, CPU 16's "(0
249 interrupts during the current stalled grace period.
263 last noted the beginning of a grace period, which might be the current
264 (stalled) grace period, or it might be some earlier grace period (for
274 detection passes that the grace-period kthread has made across this
275 CPU since the last time that this CPU noted the beginning of a grace
279 case, CPU 32), how many jiffies have elapsed since the start of the grace
280 period (in this case 2603), the grace-period sequence number (7075), and
284 If the grace period ends just as the stall warning starts printing,
292 on how the stall warning and the grace-period initialization happen to
298 grace period has nevertheless failed to end, the stall-warning splat
304 since the grace-period kthread ran. The "jiffies_till_next_fqs"
310 If the relevant grace-period kthread has been unable to run prior to
317 Starving the grace-period kthreads of CPU time can of course result
320 grace-period sequence number, the "f" precedes the ->gp_flags command
321 to the grace-period kthread, the "RCU_GP_WAIT_FQS" indicates that the
323 task_struct ->state field, and the "cpu" indicates that the grace-period
326 If the relevant grace-period kthread does not wake from FQS wait in a
339 Here "cpu" indicates that the grace-period kthread last ran on CPU 4,
359 stack dumps for the different messages for the same stalled grace period.
365 If an expedited grace period detects a stall, it will place a message
373 that the CPU was online at the beginning of the expedited grace period
377 indicates that the expedited grace period has been going on for 21,119
379 grace-period sequence counter is 73. The fact that this last value is
380 odd indicates that an expedited grace period is in flight. The number
383 current expedited grace period. If the tree had more than one level,
387 As with normal grace periods, PREEMPT_RCU builds can be stalled by
392 expedited grace periods at about the same time during the same run.