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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: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2018-05-01 06:42:51 -07:00
parent 471f87c3d9
commit aebc82644b
4 changed files with 20 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
kernel/rcu/rcu.h
View File

@ -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

24
kernel/rcu/rcutorture.c
View File

@ -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++)

5
kernel/rcu/srcutree.c
View File

@ -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);

5
kernel/rcu/tree.c
View File

@ -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);