trace/events/rcu.h

47  * Tracepoint for grace-period events.  Takes a string identifying the
48  * RCU flavor, the grace-period number, and a string identifying the
49  * grace-period-related event as follows:
53  *	"newreq": Request a new grace period.
54  *	"start": Start a grace period.
55  *	"cpustart": CPU first notices a grace-period start.
59  *	"cpuofl-bgp": CPU goes offline while blocking a grace period.
60  *	"reqwait": GP kthread sleeps waiting for grace-period request.
66  *	"end": End a grace period.
67  *	"cpuend": CPU first notices a grace-period end.
92  * Tracepoint for future grace-period events.  The caller should pull
99  * "NoGPkthread": The RCU grace-period kthread has not yet started.
103  * "Startedroot": Requested a nocb grace period based on root-node data.
104  * "Startleaf": Request a grace period based on leaf-node data.
105  * "StartWait": Start waiting for the requested grace period.
141  * Tracepoint for grace-period-initialization events.  These are
142  * distinguished by the type of RCU, the new grace-period number, the
178  * Tracepoint for expedited grace-period events.  Takes a string identifying
179  * the RCU flavor, the expedited grace-period sequence number, and a string
180  * identifying the grace-period-related event as follows:
182  *	"snap": Captured snapshot of expedited grace period sequence number.
183  *	"start": Started a real expedited grace period.
188  *	"end": Ended a real expedited grace period.
190  *	"done": Someone else did the expedited grace period for us.
215  * Tracepoint for expedited grace-period funnel-locking events.  Takes a
219  * and a string.  identifying the grace-period-related event as follows:
272  * "NeedWaitGP": rcuo GP kthread must wait on a grace period.
308  * include SRCU), the grace-period number that the task is blocking
361  * distinguished by the type of RCU, the grace-period number, the
364  * whether there are any blocked tasks blocking the current grace period.
405  * These trace events include the type of RCU, the grace-period number
441  *	"ExpeditedStall": Expedited grace period detects stalls.
731  * seconds, and the last two arguments are the grace period numbers