Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\rcu\rcutorture.c Create Date:2022-07-28 10:21:25
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:RCU torture force-quiescent-state kthread. Repeatedly induces* bursts of calls to force_quiescent_state(), increasing the probability* of occurrence of some important types of race conditions.

Proto:static int rcu_torture_fqs(void *arg)

Type:int

Parameter:

TypeParameterName
void *arg
913  VERBOSE_TOROUT_STRING("rcu_torture_fqs task started")
914  Do
915  fqs_resume_time = jiffies + fqs_stutter * HZ
916  When ULONG_CMP_LT(jiffies, fqs_resume_time) && Not kthread_should_stop - should this kthread return now?* When someone calls kthread_stop() on your kthread, it will be woken* and this will return true. You should then return, and your return* value will be passed through to kthread_stop(). cycle
918  schedule_timeout_interruptible(1)
920  fqs_burst_remaining = fqs_duration
921  When fqs_burst_remaining > 0 && Not kthread_should_stop - should this kthread return now?* When someone calls kthread_stop() on your kthread, it will be woken* and this will return true. You should then return, and your return* value will be passed through to kthread_stop(). cycle
923  fqs()
924  0x10c7 is 2**32 / 1000000 (rounded up) (fqs_holdoff)
925  fqs_burst_remaining -= fqs_holdoff
927  Task stuttering, which forces load/no-load transitions.
928  When Not Is it time for the current torture test to stop? cycle
929  Each kthread must wait for kthread_should_stop() before returning from* its top-level function, otherwise segfaults ensue
930  Return 0