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 /* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM rcu
 
 #if !defined(_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ)
 #define _TRACE_RCU_H
 
 #include <linux/tracepoint.h>
 
 #ifdef CONFIG_RCU_TRACE
 #define TRACE_EVENT_RCU TRACE_EVENT
 #else
 #define TRACE_EVENT_RCU TRACE_EVENT_NOP
 #endif
 
 /*
  * Tracepoint for start/end markers used for utilization calculations.
  * By convention, the string is of the following forms:
  *
  * "Start <activity>" -- Mark the start of the specified activity,
  *           such as "context switch".  Nesting is permitted.
  * "End <activity>" -- Mark the end of the specified activity.
  *
  * An "@" character within "<activity>" is a comment character: Data
  * reduction scripts will ignore the "@" and the remainder of the line.
  */
 TRACE_EVENT(rcu_utilization,
 
     TP_PROTO(const char *s),
 
     TP_ARGS(s),
 
     TP_STRUCT__entry(
         __field(const char *, s)
     ),
 
     TP_fast_assign(
         __entry->s = s;
     ),
 
     TP_printk("%s", __entry->s)
 );
 
 #if defined(CONFIG_TREE_RCU)
 
 /*
  * Tracepoint for grace-period events.  Takes a string identifying the
  * RCU flavor, the grace-period number, and a string identifying the
  * grace-period-related event as follows:
  *
  *  "AccReadyCB": CPU accelerates new callbacks to RCU_NEXT_READY_TAIL.
  *  "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL.
  *  "newreq": Request a new grace period.
  *  "start": Start a grace period.
  *  "cpustart": CPU first notices a grace-period start.
  *  "cpuqs": CPU passes through a quiescent state.
  *  "cpuonl": CPU comes online.
  *  "cpuofl": CPU goes offline.
  *  "cpuofl-bgp": CPU goes offline while blocking a grace period.
  *  "reqwait": GP kthread sleeps waiting for grace-period request.
  *  "reqwaitsig": GP kthread awakened by signal from reqwait state.
  *  "fqswait": GP kthread waiting until time to force quiescent states.
  *  "fqsstart": GP kthread starts forcing quiescent states.
  *  "fqsend": GP kthread done forcing quiescent states.
  *  "fqswaitsig": GP kthread awakened by signal from fqswait state.
  *  "end": End a grace period.
  *  "cpuend": CPU first notices a grace-period end.
  */
 TRACE_EVENT_RCU(rcu_grace_period,
 
     TP_PROTO(const char *rcuname, unsigned long gp_seq, const char *gpevent),
 
     TP_ARGS(rcuname, gp_seq, gpevent),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gp_seq)
         __field(const char *, gpevent)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gp_seq = (long)gp_seq;
         __entry->gpevent = gpevent;
     ),
 
     TP_printk("%s %ld %s",
           __entry->rcuname, __entry->gp_seq, __entry->gpevent)
 );
 
 /*
  * Tracepoint for future grace-period events.  The caller should pull
  * the data from the rcu_node structure, other than rcuname, which comes
  * from the rcu_state structure, and event, which is one of the following:
  *
  * "Cleanup": Clean up rcu_node structure after previous GP.
  * "CleanupMore": Clean up, and another GP is needed.
  * "EndWait": Complete wait.
  * "NoGPkthread": The RCU grace-period kthread has not yet started.
  * "Prestarted": Someone beat us to the request
  * "Startedleaf": Leaf node marked for future GP.
  * "Startedleafroot": All nodes from leaf to root marked for future GP.
  * "Startedroot": Requested a nocb grace period based on root-node data.
  * "Startleaf": Request a grace period based on leaf-node data.
  * "StartWait": Start waiting for the requested grace period.
  */
 TRACE_EVENT_RCU(rcu_future_grace_period,
 
     TP_PROTO(const char *rcuname, unsigned long gp_seq,
          unsigned long gp_seq_req, u8 level, int grplo, int grphi,
          const char *gpevent),
 
     TP_ARGS(rcuname, gp_seq, gp_seq_req, level, grplo, grphi, gpevent),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gp_seq)
         __field(long, gp_seq_req)
         __field(u8, level)
         __field(int, grplo)
         __field(int, grphi)
         __field(const char *, gpevent)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gp_seq = (long)gp_seq;
         __entry->gp_seq_req = (long)gp_seq_req;
         __entry->level = level;
         __entry->grplo = grplo;
         __entry->grphi = grphi;
         __entry->gpevent = gpevent;
     ),
 
     TP_printk("%s %ld %ld %u %d %d %s",
           __entry->rcuname, (long)__entry->gp_seq, (long)__entry->gp_seq_req, __entry->level,
           __entry->grplo, __entry->grphi, __entry->gpevent)
 );
 
 /*
  * Tracepoint for grace-period-initialization events.  These are
  * distinguished by the type of RCU, the new grace-period number, the
  * rcu_node structure level, the starting and ending CPU covered by the
  * rcu_node structure, and the mask of CPUs that will be waited for.
  * All but the type of RCU are extracted from the rcu_node structure.
  */
 TRACE_EVENT_RCU(rcu_grace_period_init,
 
     TP_PROTO(const char *rcuname, unsigned long gp_seq, u8 level,
          int grplo, int grphi, unsigned long qsmask),
 
     TP_ARGS(rcuname, gp_seq, level, grplo, grphi, qsmask),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gp_seq)
         __field(u8, level)
         __field(int, grplo)
         __field(int, grphi)
         __field(unsigned long, qsmask)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gp_seq = (long)gp_seq;
         __entry->level = level;
         __entry->grplo = grplo;
         __entry->grphi = grphi;
         __entry->qsmask = qsmask;
     ),
 
     TP_printk("%s %ld %u %d %d %lx",
           __entry->rcuname, __entry->gp_seq, __entry->level,
           __entry->grplo, __entry->grphi, __entry->qsmask)
 );
 
 /*
  * Tracepoint for expedited grace-period events.  Takes a string identifying
  * the RCU flavor, the expedited grace-period sequence number, and a string
  * identifying the grace-period-related event as follows:
  *
  *  "snap": Captured snapshot of expedited grace period sequence number.
  *  "start": Started a real expedited grace period.
  *  "reset": Started resetting the tree
  *  "select": Started selecting the CPUs to wait on.
  *  "selectofl": Selected CPU partially offline.
  *  "startwait": Started waiting on selected CPUs.
  *  "end": Ended a real expedited grace period.
  *  "endwake": Woke piggybackers up.
  *  "done": Someone else did the expedited grace period for us.
  */
 TRACE_EVENT_RCU(rcu_exp_grace_period,
 
     TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent),
 
     TP_ARGS(rcuname, gpseq, gpevent),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gpseq)
         __field(const char *, gpevent)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gpseq = (long)gpseq;
         __entry->gpevent = gpevent;
     ),
 
     TP_printk("%s %ld %s",
           __entry->rcuname, __entry->gpseq, __entry->gpevent)
 );
 
 /*
  * Tracepoint for expedited grace-period funnel-locking events.  Takes a
  * string identifying the RCU flavor, an integer identifying the rcu_node
  * combining-tree level, another pair of integers identifying the lowest-
  * and highest-numbered CPU associated with the current rcu_node structure,
  * and a string.  identifying the grace-period-related event as follows:
  *
  *  "nxtlvl": Advance to next level of rcu_node funnel
  *  "wait": Wait for someone else to do expedited GP
  */
 TRACE_EVENT_RCU(rcu_exp_funnel_lock,
 
     TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi,
          const char *gpevent),
 
     TP_ARGS(rcuname, level, grplo, grphi, gpevent),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(u8, level)
         __field(int, grplo)
         __field(int, grphi)
         __field(const char *, gpevent)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->level = level;
         __entry->grplo = grplo;
         __entry->grphi = grphi;
         __entry->gpevent = gpevent;
     ),
 
     TP_printk("%s %d %d %d %s",
           __entry->rcuname, __entry->level, __entry->grplo,
           __entry->grphi, __entry->gpevent)
 );
 
 #ifdef CONFIG_RCU_NOCB_CPU
 /*
  * Tracepoint for RCU no-CBs CPU callback handoffs.  This event is intended
  * to assist debugging of these handoffs.
  *
  * The first argument is the name of the RCU flavor, and the second is
  * the number of the offloaded CPU are extracted.  The third and final
  * argument is a string as follows:
  *
  * "AlreadyAwake": The to-be-awakened rcuo kthread is already awake.
  * "Bypass": rcuo GP kthread sees non-empty ->nocb_bypass.
  * "CBSleep": rcuo CB kthread sleeping waiting for CBs.
  * "Check": rcuo GP kthread checking specified CPU for work.
  * "DeferredWake": Timer expired or polled check, time to wake.
  * "DoWake": The to-be-awakened rcuo kthread needs to be awakened.
  * "EndSleep": Done waiting for GP for !rcu_nocb_poll.
  * "FirstBQ": New CB to empty ->nocb_bypass (->cblist maybe non-empty).
  * "FirstBQnoWake": FirstBQ plus rcuo kthread need not be awakened.
  * "FirstBQwake": FirstBQ plus rcuo kthread must be awakened.
  * "FirstQ": New CB to empty ->cblist (->nocb_bypass maybe non-empty).
  * "NeedWaitGP": rcuo GP kthread must wait on a grace period.
  * "Poll": Start of new polling cycle for rcu_nocb_poll.
  * "Sleep": Sleep waiting for GP for !rcu_nocb_poll.
  * "Timer": Deferred-wake timer expired.
  * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list.
  * "WakeEmpty": Wake rcuo kthread, first CB to empty list.
  * "WakeNot": Don't wake rcuo kthread.
  * "WakeNotPoll": Don't wake rcuo kthread because it is polling.
  * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge.
  * "WakeBypassIsDeferred": Wake rcuo kthread later, bypass list is contended.
  * "WokeEmpty": rcuo CB kthread woke to find empty list.
  */
 TRACE_EVENT_RCU(rcu_nocb_wake,
 
     TP_PROTO(const char *rcuname, int cpu, const char *reason),
 
     TP_ARGS(rcuname, cpu, reason),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(int, cpu)
         __field(const char *, reason)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->cpu = cpu;
         __entry->reason = reason;
     ),
 
     TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason)
 );
 #endif
 
 /*
  * Tracepoint for tasks blocking within preemptible-RCU read-side
  * critical sections.  Track the type of RCU (which one day might
  * include SRCU), the grace-period number that the task is blocking
  * (the current or the next), and the task's PID.
  */
 TRACE_EVENT_RCU(rcu_preempt_task,
 
     TP_PROTO(const char *rcuname, int pid, unsigned long gp_seq),
 
     TP_ARGS(rcuname, pid, gp_seq),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gp_seq)
         __field(int, pid)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gp_seq = (long)gp_seq;
         __entry->pid = pid;
     ),
 
     TP_printk("%s %ld %d",
           __entry->rcuname, __entry->gp_seq, __entry->pid)
 );
 
 /*
  * Tracepoint for tasks that blocked within a given preemptible-RCU
  * read-side critical section exiting that critical section.  Track the
  * type of RCU (which one day might include SRCU) and the task's PID.
  */
 TRACE_EVENT_RCU(rcu_unlock_preempted_task,
 
     TP_PROTO(const char *rcuname, unsigned long gp_seq, int pid),
 
     TP_ARGS(rcuname, gp_seq, pid),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gp_seq)
         __field(int, pid)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gp_seq = (long)gp_seq;
         __entry->pid = pid;
     ),
 
     TP_printk("%s %ld %d", __entry->rcuname, __entry->gp_seq, __entry->pid)
 );
 
 /*
  * Tracepoint for quiescent-state-reporting events.  These are
  * distinguished by the type of RCU, the grace-period number, the
  * mask of quiescent lower-level entities, the rcu_node structure level,
  * the starting and ending CPU covered by the rcu_node structure, and
  * whether there are any blocked tasks blocking the current grace period.
  * All but the type of RCU are extracted from the rcu_node structure.
  */
 TRACE_EVENT_RCU(rcu_quiescent_state_report,
 
     TP_PROTO(const char *rcuname, unsigned long gp_seq,
          unsigned long mask, unsigned long qsmask,
          u8 level, int grplo, int grphi, int gp_tasks),
 
     TP_ARGS(rcuname, gp_seq, mask, qsmask, level, grplo, grphi, gp_tasks),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gp_seq)
         __field(unsigned long, mask)
         __field(unsigned long, qsmask)
         __field(u8, level)
         __field(int, grplo)
         __field(int, grphi)
         __field(u8, gp_tasks)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gp_seq = (long)gp_seq;
         __entry->mask = mask;
         __entry->qsmask = qsmask;
         __entry->level = level;
         __entry->grplo = grplo;
         __entry->grphi = grphi;
         __entry->gp_tasks = gp_tasks;
     ),
 
     TP_printk("%s %ld %lx>%lx %u %d %d %u",
           __entry->rcuname, __entry->gp_seq,
           __entry->mask, __entry->qsmask, __entry->level,
           __entry->grplo, __entry->grphi, __entry->gp_tasks)
 );
 
 /*
  * Tracepoint for quiescent states detected by force_quiescent_state().
  * These trace events include the type of RCU, the grace-period number
  * that was blocked by the CPU, the CPU itself, and the type of quiescent
  * state, which can be "dti" for dyntick-idle mode or "kick" when kicking
  * a CPU that has been in dyntick-idle mode for too long.
  */
 TRACE_EVENT_RCU(rcu_fqs,
 
     TP_PROTO(const char *rcuname, unsigned long gp_seq, int cpu, const char *qsevent),
 
     TP_ARGS(rcuname, gp_seq, cpu, qsevent),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, gp_seq)
         __field(int, cpu)
         __field(const char *, qsevent)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->gp_seq = (long)gp_seq;
         __entry->cpu = cpu;
         __entry->qsevent = qsevent;
     ),
 
     TP_printk("%s %ld %d %s",
           __entry->rcuname, __entry->gp_seq,
           __entry->cpu, __entry->qsevent)
 );
 
 /*
  * Tracepoint for RCU stall events. Takes a string identifying the RCU flavor
  * and a string identifying which function detected the RCU stall as follows:
  *
  *  "StallDetected": Scheduler-tick detects other CPU's stalls.
  *  "SelfDetected": Scheduler-tick detects a current CPU's stall.
  *  "ExpeditedStall": Expedited grace period detects stalls.
  */
 TRACE_EVENT(rcu_stall_warning,
 
     TP_PROTO(const char *rcuname, const char *msg),
 
     TP_ARGS(rcuname, msg),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(const char *, msg)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->msg = msg;
     ),
 
     TP_printk("%s %s",
           __entry->rcuname, __entry->msg)
 );
 
 #endif /* #if defined(CONFIG_TREE_RCU) */
 
 /*
  * Tracepoint for dyntick-idle entry/exit events.  These take 2 strings
  * as argument:
  * polarity: "Start", "End", "StillNonIdle" for entering, exiting or still not
  *            being in dyntick-idle mode.
  * context: "USER" or "IDLE" or "IRQ".
  * NMIs nested in IRQs are inferred with dynticks_nesting > 1 in IRQ context.
  *
  * These events also take a pair of numbers, which indicate the nesting
  * depth before and after the event of interest, and a third number that is
  * the ->dynticks counter.  Note that task-related and interrupt-related
  * events use two separate counters, and that the "++=" and "--=" events
  * for irq/NMI will change the counter by two, otherwise by one.
  */
 TRACE_EVENT_RCU(rcu_dyntick,
 
     TP_PROTO(const char *polarity, long oldnesting, long newnesting, int dynticks),
 
     TP_ARGS(polarity, oldnesting, newnesting, dynticks),
 
     TP_STRUCT__entry(
         __field(const char *, polarity)
         __field(long, oldnesting)
         __field(long, newnesting)
         __field(int, dynticks)
     ),
 
     TP_fast_assign(
         __entry->polarity = polarity;
         __entry->oldnesting = oldnesting;
         __entry->newnesting = newnesting;
         __entry->dynticks = dynticks;
     ),
 
     TP_printk("%s %lx %lx %#3x", __entry->polarity,
           __entry->oldnesting, __entry->newnesting,
           __entry->dynticks & 0xfff)
 );
 
 /*
  * Tracepoint for the registration of a single RCU callback function.
  * The first argument is the type of RCU, the second argument is
  * a pointer to the RCU callback itself, the third element is the
  * number of lazy callbacks queued, and the fourth element is the
  * total number of callbacks queued.
  */
 TRACE_EVENT_RCU(rcu_callback,
 
     TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen),
 
     TP_ARGS(rcuname, rhp, qlen),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(void *, rhp)
         __field(void *, func)
         __field(long, qlen)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->rhp = rhp;
         __entry->func = rhp->func;
         __entry->qlen = qlen;
     ),
 
     TP_printk("%s rhp=%p func=%ps %ld",
           __entry->rcuname, __entry->rhp, __entry->func,
           __entry->qlen)
 );
 
 TRACE_EVENT_RCU(rcu_segcb_stats,
 
         TP_PROTO(struct rcu_segcblist *rs, const char *ctx),
 
         TP_ARGS(rs, ctx),
 
         TP_STRUCT__entry(
             __field(const char *, ctx)
             __array(unsigned long, gp_seq, RCU_CBLIST_NSEGS)
             __array(long, seglen, RCU_CBLIST_NSEGS)
         ),
 
         TP_fast_assign(
             __entry->ctx = ctx;
             memcpy(__entry->seglen, rs->seglen, RCU_CBLIST_NSEGS * sizeof(long));
             memcpy(__entry->gp_seq, rs->gp_seq, RCU_CBLIST_NSEGS * sizeof(unsigned long));
 
         ),
 
         TP_printk("%s seglen: (DONE=%ld, WAIT=%ld, NEXT_READY=%ld, NEXT=%ld) "
               "gp_seq: (DONE=%lu, WAIT=%lu, NEXT_READY=%lu, NEXT=%lu)", __entry->ctx,
               __entry->seglen[0], __entry->seglen[1], __entry->seglen[2], __entry->seglen[3],
               __entry->gp_seq[0], __entry->gp_seq[1], __entry->gp_seq[2], __entry->gp_seq[3])
 
 );
 
 /*
  * Tracepoint for the registration of a single RCU callback of the special
  * kvfree() form.  The first argument is the RCU type, the second argument
  * is a pointer to the RCU callback, the third argument is the offset
  * of the callback within the enclosing RCU-protected data structure,
  * the fourth argument is the number of lazy callbacks queued, and the
  * fifth argument is the total number of callbacks queued.
  */
 TRACE_EVENT_RCU(rcu_kvfree_callback,
 
     TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
          long qlen),
 
     TP_ARGS(rcuname, rhp, offset, qlen),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(void *, rhp)
         __field(unsigned long, offset)
         __field(long, qlen)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->rhp = rhp;
         __entry->offset = offset;
         __entry->qlen = qlen;
     ),
 
     TP_printk("%s rhp=%p func=%ld %ld",
           __entry->rcuname, __entry->rhp, __entry->offset,
           __entry->qlen)
 );
 
 /*
  * Tracepoint for marking the beginning rcu_do_batch, performed to start
  * RCU callback invocation.  The first argument is the RCU flavor,
  * the second is the number of lazy callbacks queued, the third is
  * the total number of callbacks queued, and the fourth argument is
  * the current RCU-callback batch limit.
  */
 TRACE_EVENT_RCU(rcu_batch_start,
 
     TP_PROTO(const char *rcuname, long qlen, long blimit),
 
     TP_ARGS(rcuname, qlen, blimit),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(long, qlen)
         __field(long, blimit)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->qlen = qlen;
         __entry->blimit = blimit;
     ),
 
     TP_printk("%s CBs=%ld bl=%ld",
           __entry->rcuname, __entry->qlen, __entry->blimit)
 );
 
 /*
  * Tracepoint for the invocation of a single RCU callback function.
  * The first argument is the type of RCU, and the second argument is
  * a pointer to the RCU callback itself.
  */
 TRACE_EVENT_RCU(rcu_invoke_callback,
 
     TP_PROTO(const char *rcuname, struct rcu_head *rhp),
 
     TP_ARGS(rcuname, rhp),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(void *, rhp)
         __field(void *, func)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->rhp = rhp;
         __entry->func = rhp->func;
     ),
 
     TP_printk("%s rhp=%p func=%ps",
           __entry->rcuname, __entry->rhp, __entry->func)
 );
 
 /*
  * Tracepoint for the invocation of a single RCU callback of the special
  * kvfree() form.  The first argument is the RCU flavor, the second
  * argument is a pointer to the RCU callback, and the third argument
  * is the offset of the callback within the enclosing RCU-protected
  * data structure.
  */
 TRACE_EVENT_RCU(rcu_invoke_kvfree_callback,
 
     TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
 
     TP_ARGS(rcuname, rhp, offset),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(void *, rhp)
         __field(unsigned long, offset)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->rhp = rhp;
         __entry->offset = offset;
     ),
 
     TP_printk("%s rhp=%p func=%ld",
           __entry->rcuname, __entry->rhp, __entry->offset)
 );
 
 /*
  * Tracepoint for the invocation of a single RCU callback of the special
  * kfree_bulk() form. The first argument is the RCU flavor, the second
  * argument is a number of elements in array to free, the third is an
  * address of the array holding nr_records entries.
  */
 TRACE_EVENT_RCU(rcu_invoke_kfree_bulk_callback,
 
     TP_PROTO(const char *rcuname, unsigned long nr_records, void **p),
 
     TP_ARGS(rcuname, nr_records, p),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(unsigned long, nr_records)
         __field(void **, p)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->nr_records = nr_records;
         __entry->p = p;
     ),
 
     TP_printk("%s bulk=0x%p nr_records=%lu",
         __entry->rcuname, __entry->p, __entry->nr_records)
 );
 
 /*
  * Tracepoint for exiting rcu_do_batch after RCU callbacks have been
  * invoked.  The first argument is the name of the RCU flavor,
  * the second argument is number of callbacks actually invoked,
  * the third argument (cb) is whether or not any of the callbacks that
  * were ready to invoke at the beginning of this batch are still
  * queued, the fourth argument (nr) is the return value of need_resched(),
  * the fifth argument (iit) is 1 if the current task is the idle task,
  * and the sixth argument (risk) is the return value from
  * rcu_is_callbacks_kthread().
  */
 TRACE_EVENT_RCU(rcu_batch_end,
 
     TP_PROTO(const char *rcuname, int callbacks_invoked,
          char cb, char nr, char iit, char risk),
 
     TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(int, callbacks_invoked)
         __field(char, cb)
         __field(char, nr)
         __field(char, iit)
         __field(char, risk)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->callbacks_invoked = callbacks_invoked;
         __entry->cb = cb;
         __entry->nr = nr;
         __entry->iit = iit;
         __entry->risk = risk;
     ),
 
     TP_printk("%s CBs-invoked=%d idle=%c%c%c%c",
           __entry->rcuname, __entry->callbacks_invoked,
           __entry->cb ? 'C' : '.',
           __entry->nr ? 'S' : '.',
           __entry->iit ? 'I' : '.',
           __entry->risk ? 'R' : '.')
 );
 
 /*
  * Tracepoint for rcutorture readers.  The first argument is the name
  * of the RCU flavor from rcutorture's viewpoint and the second argument
  * is the callback address.  The third argument is the start time in
  * seconds, and the last two arguments are the grace period numbers
  * at the beginning and end of the read, respectively.  Note that the
  * callback address can be NULL.
  */
 #define RCUTORTURENAME_LEN 8
 TRACE_EVENT_RCU(rcu_torture_read,
 
     TP_PROTO(const char *rcutorturename, struct rcu_head *rhp,
          unsigned long secs, unsigned long c_old, unsigned long c),
 
     TP_ARGS(rcutorturename, rhp, secs, c_old, c),
 
     TP_STRUCT__entry(
         __field(char, rcutorturename[RCUTORTURENAME_LEN])
         __field(struct rcu_head *, rhp)
         __field(unsigned long, secs)
         __field(unsigned long, c_old)
         __field(unsigned long, c)
     ),
 
     TP_fast_assign(
         strncpy(__entry->rcutorturename, rcutorturename,
             RCUTORTURENAME_LEN);
         __entry->rcutorturename[RCUTORTURENAME_LEN - 1] = 0;
         __entry->rhp = rhp;
         __entry->secs = secs;
         __entry->c_old = c_old;
         __entry->c = c;
     ),
 
     TP_printk("%s torture read %p %luus c: %lu %lu",
           __entry->rcutorturename, __entry->rhp,
           __entry->secs, __entry->c_old, __entry->c)
 );
 
 /*
  * Tracepoint for rcu_barrier() execution.  The string "s" describes
  * the rcu_barrier phase:
  *  "Begin": rcu_barrier() started.
  *  "CB": An rcu_barrier_callback() invoked a callback, not the last.
  *  "EarlyExit": rcu_barrier() piggybacked, thus early exit.
  *  "Inc1": rcu_barrier() piggyback check counter incremented.
  *  "Inc2": rcu_barrier() piggyback check counter incremented.
  *  "IRQ": An rcu_barrier_callback() callback posted on remote CPU.
  *  "IRQNQ": An rcu_barrier_callback() callback found no callbacks.
  *  "LastCB": An rcu_barrier_callback() invoked the last callback.
  *  "NQ": rcu_barrier() found a CPU with no callbacks.
  *  "OnlineQ": rcu_barrier() found online CPU with callbacks.
  * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument
  * is the count of remaining callbacks, and "done" is the piggybacking count.
  */
 TRACE_EVENT_RCU(rcu_barrier,
 
     TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done),
 
     TP_ARGS(rcuname, s, cpu, cnt, done),
 
     TP_STRUCT__entry(
         __field(const char *, rcuname)
         __field(const char *, s)
         __field(int, cpu)
         __field(int, cnt)
         __field(unsigned long, done)
     ),
 
     TP_fast_assign(
         __entry->rcuname = rcuname;
         __entry->s = s;
         __entry->cpu = cpu;
         __entry->cnt = cnt;
         __entry->done = done;
     ),
 
     TP_printk("%s %s cpu %d remaining %d # %lu",
           __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt,
           __entry->done)
 );
 
 #endif /* _TRACE_RCU_H */
 
 /* This part must be outside protection */
 #include <trace/define_trace.h>

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