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Commit abd13fdd authored by Paul E. McKenney's avatar Paul E. McKenney
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rcu: Convert rcu_future_grace_period tracepoint to gp_seq 



This commit makes the rcu_future_grace_period tracepoint use gp_seq
instead of ->gpnum and ->completed.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 477351f7

include/trace/events/rcu.h

+9 −13
Original line number Diff line number Diff line
@@ -103,16 +103,14 @@ TRACE_EVENT(rcu_grace_period, 
 */

TRACE_EVENT(rcu_future_grace_period,



	TP_PROTO(const char *rcuname, unsigned long gpnum, unsigned long completed,

		 unsigned long c, u8 level, int grplo, int grphi,

		 const char *gpevent),

	TP_PROTO(const char *rcuname, unsigned long gp_seq, unsigned long c,

		 u8 level, int grplo, int grphi, const char *gpevent),



	TP_ARGS(rcuname, gpnum, completed, c, level, grplo, grphi, gpevent),

	TP_ARGS(rcuname, gp_seq, c, level, grplo, grphi, gpevent),



	TP_STRUCT__entry(

		__field(const char *, rcuname)

		__field(unsigned long, gpnum)

		__field(unsigned long, completed)

		__field(unsigned long, gp_seq)

		__field(unsigned long, c)

		__field(u8, level)

		__field(int, grplo)
@@ -122,8 +120,7 @@ TRACE_EVENT(rcu_future_grace_period, 


	TP_fast_assign(

		__entry->rcuname = rcuname;

		__entry->gpnum = gpnum;

		__entry->completed = completed;

		__entry->gp_seq = gp_seq;

		__entry->c = c;

		__entry->level = level;

		__entry->grplo = grplo;
@@ -131,10 +128,9 @@ TRACE_EVENT(rcu_future_grace_period, 
		__entry->gpevent = gpevent;

	),



	TP_printk("%s %lu %lu %lu %u %d %d %s",

		  __entry->rcuname, __entry->gpnum, __entry->completed,

		  __entry->c, __entry->level, __entry->grplo, __entry->grphi,

		  __entry->gpevent)

	TP_printk("%s %lu %lu %u %d %d %s",

		  __entry->rcuname, __entry->gp_seq, __entry->c, __entry->level,

		  __entry->grplo, __entry->grphi, __entry->gpevent)

);



/*
@@ -755,7 +751,7 @@ TRACE_EVENT(rcu_barrier, 
#else /* #ifdef CONFIG_RCU_TRACE */



#define trace_rcu_grace_period(rcuname, gp_seq, gpevent) do { } while (0)

#define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \

#define trace_rcu_future_grace_period(rcuname, gp_seq, c, \

				      level, grplo, grphi, event) \

				      do { } while (0)

#define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \

kernel/rcu/tree.c

+3 −4
Original line number Diff line number Diff line
@@ -1552,9 +1552,8 @@ void rcu_cpu_stall_reset(void) 
static void trace_rcu_this_gp(struct rcu_node *rnp, struct rcu_data *rdp,

			      unsigned long c, const char *s)

{

	trace_rcu_future_grace_period(rdp->rsp->name, rnp->gpnum,

				      rnp->completed, c, rnp->level,

				      rnp->grplo, rnp->grphi, s);

	trace_rcu_future_grace_period(rdp->rsp->name, rnp->gp_seq, c,

				      rnp->level, rnp->grplo, rnp->grphi, s);

}



/*
@@ -2053,7 +2052,7 @@ static void rcu_gp_cleanup(struct rcu_state *rsp) 
	/* Check for GP requests since above loop. */

	rdp = this_cpu_ptr(rsp->rda);

	if (ULONG_CMP_LT(rnp->gp_seq, rnp->gp_seq_needed)) {

		trace_rcu_this_gp(rnp, rdp, rsp->completed - 1,

		trace_rcu_this_gp(rnp, rdp, rnp->gp_seq_needed,

				  TPS("CleanupMore"));

		needgp = true;

	}