Commit 18aff33e authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Print symbolic name for rcu_torture_writer_state 



Currently, rcu_torture_writer_state is printed as an integer, which slows
debugging.  This commit therefore prints a symbolic name in addition to
the integer.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
[ paulmck: More "const", as suggested by Josh Triplett. ]
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent 91bf6a83

kernel/rcu/rcutorture.c

+23 −1
Original line number Diff line number Diff line
@@ -162,6 +162,27 @@ static int rcu_torture_writer_state; 
#define RTWS_SYNC		7

#define RTWS_STUTTER		8

#define RTWS_STOPPING		9

static const char * const rcu_torture_writer_state_names[] = {

	"RTWS_FIXED_DELAY",

	"RTWS_DELAY",

	"RTWS_REPLACE",

	"RTWS_DEF_FREE",

	"RTWS_EXP_SYNC",

	"RTWS_COND_GET",

	"RTWS_COND_SYNC",

	"RTWS_SYNC",

	"RTWS_STUTTER",

	"RTWS_STOPPING",

};



static const char *rcu_torture_writer_state_getname(void)

{

	unsigned int i = READ_ONCE(rcu_torture_writer_state);



	if (i >= ARRAY_SIZE(rcu_torture_writer_state_names))

		return "???";

	return rcu_torture_writer_state_names[i];

}



#if defined(MODULE) || defined(CONFIG_RCU_TORTURE_TEST_RUNNABLE)

#define RCUTORTURE_RUNNABLE_INIT 1
@@ -1307,7 +1328,8 @@ rcu_torture_stats_print(void) 


		rcutorture_get_gp_data(cur_ops->ttype,

				       &flags, &gpnum, &completed);

		pr_alert("??? Writer stall state %d g%lu c%lu f%#x\n",

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

			 rcu_torture_writer_state_getname(),

			 rcu_torture_writer_state,

			 gpnum, completed, flags);

		show_rcu_gp_kthreads();

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