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Commit aebc8264 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Convert rcutorture_get_gp_data() to ->gp_seq 



SRCU has long used ->srcu_gp_seq, and now RCU uses ->gp_seq.  This
commit therefore moves the rcutorture_get_gp_data() function from
a ->gpnum / ->completed pair to ->gp_seq.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 471f87c3

kernel/rcu/rcu.h

+6 −11
Original line number Diff line number Diff line
@@ -425,7 +425,7 @@ enum rcutorture_type { 


#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU)

void rcutorture_get_gp_data(enum rcutorture_type test_type, int *flags,

			    unsigned long *gpnum, unsigned long *completed);

			    unsigned long *gp_seq);

void rcutorture_record_test_transition(void);

void rcutorture_record_progress(unsigned long vernum);

void do_trace_rcu_torture_read(const char *rcutorturename,
@@ -435,13 +435,10 @@ void do_trace_rcu_torture_read(const char *rcutorturename, 
			       unsigned long c);

#else

static inline void rcutorture_get_gp_data(enum rcutorture_type test_type,

					  int *flags,

					  unsigned long *gpnum,

					  unsigned long *completed)

					  int *flags, unsigned long *gp_seq)

{

	*flags = 0;

	*gpnum = 0;

	*completed = 0;

	*gp_seq = 0;

}

static inline void rcutorture_record_test_transition(void) { }

static inline void rcutorture_record_progress(unsigned long vernum) { }
@@ -461,21 +458,19 @@ void do_trace_rcu_torture_read(const char *rcutorturename, 


static inline void srcutorture_get_gp_data(enum rcutorture_type test_type,

					   struct srcu_struct *sp, int *flags,

					   unsigned long *gpnum,

					   unsigned long *completed)

					   unsigned long *gp_seq)

{

	if (test_type != SRCU_FLAVOR)

		return;

	*flags = 0;

	*completed = sp->srcu_idx;

	*gpnum = *completed;

	*gp_seq = sp->srcu_idx;

}



#elif defined(CONFIG_TREE_SRCU)



void srcutorture_get_gp_data(enum rcutorture_type test_type,

			     struct srcu_struct *sp, int *flags,

			     unsigned long *gpnum, unsigned long *completed);

			     unsigned long *gp_seq);



#endif

kernel/rcu/rcutorture.c

+10 −14
Original line number Diff line number Diff line
@@ -1313,18 +1313,16 @@ rcu_torture_stats_print(void) 
	if (rtcv_snap == rcu_torture_current_version &&

	    rcu_torture_current != NULL) {

		int __maybe_unused flags = 0;

		unsigned long __maybe_unused gpnum = 0;

		unsigned long __maybe_unused completed = 0;

		unsigned long __maybe_unused gp_seq = 0;



		rcutorture_get_gp_data(cur_ops->ttype,

				       &flags, &gpnum, &completed);

				       &flags, &gp_seq);

		srcutorture_get_gp_data(cur_ops->ttype, srcu_ctlp,

					&flags, &gpnum, &completed);

					&flags, &gp_seq);

		wtp = READ_ONCE(writer_task);

		pr_alert("??? Writer stall state %s(%d) g%lu c%lu f%#x ->state %#lx cpu %d\n",

		pr_alert("??? Writer stall state %s(%d) g%lu f%#x ->state %#lx cpu %d\n",

			 rcu_torture_writer_state_getname(),

			 rcu_torture_writer_state,

			 gpnum, completed, flags,

			 rcu_torture_writer_state, gp_seq, flags,

			 wtp == NULL ? ~0UL : wtp->state,

			 wtp == NULL ? -1 : (int)task_cpu(wtp));

		if (!splatted && wtp) {
@@ -1605,8 +1603,7 @@ static void 
rcu_torture_cleanup(void)

{

	int flags = 0;

	unsigned long gpnum = 0;

	unsigned long completed = 0;

	unsigned long gp_seq = 0;

	int i;



	rcutorture_record_test_transition();
@@ -1637,11 +1634,10 @@ rcu_torture_cleanup(void) 
		fakewriter_tasks = NULL;

	}



	rcutorture_get_gp_data(cur_ops->ttype, &flags, &gpnum, &completed);

	srcutorture_get_gp_data(cur_ops->ttype, srcu_ctlp,

				&flags, &gpnum, &completed);

	pr_alert("%s:  End-test grace-period state: g%lu c%lu f%#x\n",

		 cur_ops->name, gpnum, completed, flags);

	rcutorture_get_gp_data(cur_ops->ttype, &flags, &gp_seq);

	srcutorture_get_gp_data(cur_ops->ttype, srcu_ctlp, &flags, &gp_seq);

	pr_alert("%s:  End-test grace-period state: g%lu f%#x\n",

		 cur_ops->name, gp_seq, flags);

	torture_stop_kthread(rcu_torture_stats, stats_task);

	torture_stop_kthread(rcu_torture_fqs, fqs_task);

	for (i = 0; i < ncbflooders; i++)

kernel/rcu/srcutree.c

+2 −3
Original line number Diff line number Diff line
@@ -1249,13 +1249,12 @@ static void process_srcu(struct work_struct *work) 


void srcutorture_get_gp_data(enum rcutorture_type test_type,

			     struct srcu_struct *sp, int *flags,

			     unsigned long *gpnum, unsigned long *completed)

			     unsigned long *gp_seq)

{

	if (test_type != SRCU_FLAVOR)

		return;

	*flags = 0;

	*completed = rcu_seq_ctr(sp->srcu_gp_seq);

	*gpnum = rcu_seq_ctr(sp->srcu_gp_seq_needed);

	*gp_seq = rcu_seq_current(&sp->srcu_gp_seq);

}

EXPORT_SYMBOL_GPL(srcutorture_get_gp_data);

kernel/rcu/tree.c

+2 −3
Original line number Diff line number Diff line
@@ -638,7 +638,7 @@ EXPORT_SYMBOL_GPL(rcutorture_record_test_transition); 
 * Send along grace-period-related data for rcutorture diagnostics.

 */

void rcutorture_get_gp_data(enum rcutorture_type test_type, int *flags,

			    unsigned long *gpnum, unsigned long *completed)

			    unsigned long *gp_seq)

{

	struct rcu_state *rsp = NULL;
@@ -658,8 +658,7 @@ void rcutorture_get_gp_data(enum rcutorture_type test_type, int *flags, 
	if (rsp == NULL)

		return;

	*flags = READ_ONCE(rsp->gp_flags);

	*gpnum = READ_ONCE(rsp->gpnum);

	*completed = READ_ONCE(rsp->completed);

	*gp_seq = rcu_seq_current(&rsp->gp_seq);

}

EXPORT_SYMBOL_GPL(rcutorture_get_gp_data);