rcu: Add event tracing definitions for expedited grace periods (e087816d) · Commits · e / devices / android_kernel_fairphone_FP3

include/trace/events/rcu.h

+76 −2

Original line number	Original line	Diff line number	Diff line
	@@ -171,6 +171,76 @@ TRACE_EVENT(rcu_grace_period_init,
	__entry->grplo, __entry->grphi, __entry->qsmask)		__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.
			* "end": Ended a real expedited grace period.
			* "done": Someone else did the expedited grace period for us.
			*/
			TRACE_EVENT(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(unsigned long, gpseq)
			__field(const char *, gpevent)
			),

			TP_fast_assign(
			__entry->rcuname = rcuname;
			__entry->gpseq = gpseq;
			__entry->gpevent = gpevent;
			),

			TP_printk("%s %lu %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:
			*
			* "acq": Acquired a level of funnel lock
			* "rel": Released a level of funnel lock
			*/
			TRACE_EVENT(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)
			);

	/*		/*
	* Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended		* Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended
	* to assist debugging of these handoffs.		* to assist debugging of these handoffs.
	@@ -704,11 +774,15 @@ TRACE_EVENT(rcu_barrier,
	#else /* #ifdef CONFIG_RCU_TRACE */		#else /* #ifdef CONFIG_RCU_TRACE */

	#define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)		#define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
	#define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
	qsmask) do { } while (0)
	#define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \		#define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \
	level, grplo, grphi, event) \		level, grplo, grphi, event) \
	do { } while (0)		do { } while (0)
			#define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
			qsmask) do { } while (0)
			#define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \
			do { } while (0)
			#define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \
			do { } while (0)
	#define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0)		#define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0)
	#define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)		#define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
	#define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)		#define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)