diff mbox series

[2/6] rcu/tasks: Update rtp->tasks_gp_seq comment

Message ID 20240802003426.4134196-2-paulmck@kernel.org (mailing list archive)
State Accepted
Commit 4ad42a817f7167ea9edc7cdb25069597f3c093f9
Headers show
Series Add RCU Tasks diagnostics and documentation | expand

Commit Message

Paul E. McKenney Aug. 2, 2024, 12:34 a.m. UTC 
The rtp->tasks_gp_seq grace-period sequence number is not a strict count,
but rather the usual RCU sequence number with the lower few bits tracking
per-grace-period state and the upper bits the count of grace periods
since boot, give or take the initial value.  This commit therefore
adjusts this comment.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 kernel/rcu/tasks.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index d473846a572aa..cf273c554f3b0 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -64,7 +64,7 @@  struct rcu_tasks_percpu {
  * @init_fract: Initial backoff sleep interval.
  * @gp_jiffies: Time of last @gp_state transition.
  * @gp_start: Most recent grace-period start in jiffies.
- * @tasks_gp_seq: Number of grace periods completed since boot.
+ * @tasks_gp_seq: Number of grace periods completed since boot in upper bits.
  * @n_ipis: Number of IPIs sent to encourage grace periods to end.
  * @n_ipis_fails: Number of IPI-send failures.
  * @kthread_ptr: This flavor's grace-period/callback-invocation kthread.