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[2/4] srcu: Add GP and maximum requested GP to Tiny SRCU rcutorture output

Message ID 20220831181435.2695936-2-paulmck@kernel.org (mailing list archive)
State New, archived
Headers show
Series SRCU polled grace-period updates for v6.1 | expand

Commit Message

Paul E. McKenney Aug. 31, 2022, 6:14 p.m. UTC 
This commit adds the ->srcu_idx and ->srcu_max_idx fields to the Tiny
SRCU rcutorture output for additional diagnostics.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 include/linux/srcutiny.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h
index 6cfaa0a9a9b96..4fcec6f5af908 100644
--- a/include/linux/srcutiny.h
+++ b/include/linux/srcutiny.h
@@ -82,10 +82,12 @@  static inline void srcu_torture_stats_print(struct srcu_struct *ssp,
 	int idx;
 
 	idx = ((data_race(READ_ONCE(ssp->srcu_idx)) + 1) & 0x2) >> 1;
-	pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%hd,%hd)\n",
+	pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%hd,%hd) gp: %hu->%hu\n",
 		 tt, tf, idx,
 		 data_race(READ_ONCE(ssp->srcu_lock_nesting[!idx])),
-		 data_race(READ_ONCE(ssp->srcu_lock_nesting[idx])));
+		 data_race(READ_ONCE(ssp->srcu_lock_nesting[idx])),
+		 data_race(READ_ONCE(ssp->srcu_idx)),
+		 data_race(READ_ONCE(ssp->srcu_idx_max)));
 }
 
 #endif