Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 837 insertions, 0 deletions

diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
new file mode 100644
index 0000000000..2ef9c71977
--- /dev/null
+++ b/include/trace/events/rcu.h
@@ -0,0 +1,837 @@
+/* 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(
+		__array(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(
+		strscpy(__entry->rcutorturename, rcutorturename, RCUTORTURENAME_LEN);
+		__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>