diff mbox series

[v3,19/25] rcu: Rename struct rcu_data .dynticks_snap into .watching_snap

Message ID 20240724144325.3307148-20-vschneid@redhat.com (mailing list archive)
State New
Headers show
Series context_tracking, rcu: Spring cleaning of dynticks references | expand

Commit Message

Valentin Schneider July 24, 2024, 2:43 p.m. UTC 
The context_tracking.state RCU_DYNTICKS subvariable has been renamed to
RCU_WATCHING, and the snapshot helpers are now prefix by
"rcu_watching". Reflect that change into the storage variables for these
snapshots.

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
---
 .../RCU/Design/Data-Structures/Data-Structures.rst          | 4 ++--
 kernel/rcu/tree.c                                           | 6 +++---
 kernel/rcu/tree.h                                           | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

Comments

Frederic Weisbecker July 25, 2024, 12:21 p.m. UTC | #1 
Le Wed, Jul 24, 2024 at 04:43:19PM +0200, Valentin Schneider a écrit :
> The context_tracking.state RCU_DYNTICKS subvariable has been renamed to
> RCU_WATCHING, and the snapshot helpers are now prefix by
> "rcu_watching". Reflect that change into the storage variables for these
> snapshots.
> 
> Signed-off-by: Valentin Schneider <vschneid@redhat.com>

Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/RCU/Design/Data-Structures/Data-Structures.rst b/Documentation/RCU/Design/Data-Structures/Data-Structures.rst
index 5389cc49bea13..de76c624fe93e 100644
--- a/Documentation/RCU/Design/Data-Structures/Data-Structures.rst
+++ b/Documentation/RCU/Design/Data-Structures/Data-Structures.rst
@@ -921,10 +921,10 @@  This portion of the ``rcu_data`` structure is declared as follows:
 
 ::
 
-     1   int dynticks_snap;
+     1   int watching_snap;
      2   unsigned long dynticks_fqs;
 
-The ``->dynticks_snap`` field is used to take a snapshot of the
+The ``->watching_snap`` field is used to take a snapshot of the
 corresponding CPU's dyntick-idle state when forcing quiescent states,
 and is therefore accessed from other CPUs. Finally, the
 ``->dynticks_fqs`` field is used to count the number of times this CPU
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index d05bd65fbfdc2..e1dd424f8a4c0 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -779,8 +779,8 @@  static int dyntick_save_progress_counter(struct rcu_data *rdp)
 	 * current GP sequence number is enforced by current rnp locking
 	 * with chained smp_mb__after_unlock_lock().
 	 */
-	rdp->dynticks_snap = ct_rcu_watching_cpu_acquire(rdp->cpu);
-	if (rcu_watching_snap_in_eqs(rdp->dynticks_snap)) {
+	rdp->watching_snap = ct_rcu_watching_cpu_acquire(rdp->cpu);
+	if (rcu_watching_snap_in_eqs(rdp->watching_snap)) {
 		trace_rcu_fqs(rcu_state.name, rdp->gp_seq, rdp->cpu, TPS("dti"));
 		rcu_gpnum_ovf(rdp->mynode, rdp);
 		return 1;
@@ -812,7 +812,7 @@  static int rcu_implicit_dynticks_qs(struct rcu_data *rdp)
 	 * read-side critical section that started before the beginning
 	 * of the current RCU grace period.
 	 */
-	if (rcu_watching_snap_stopped_since(rdp, rdp->dynticks_snap)) {
+	if (rcu_watching_snap_stopped_since(rdp, rdp->watching_snap)) {
 		trace_rcu_fqs(rcu_state.name, rdp->gp_seq, rdp->cpu, TPS("dti"));
 		rcu_gpnum_ovf(rnp, rdp);
 		return 1;
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index fcf2b4aa34417..f5361a7d7269c 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -206,7 +206,7 @@  struct rcu_data {
 	long		blimit;		/* Upper limit on a processed batch */
 
 	/* 3) dynticks interface. */
-	int dynticks_snap;		/* Per-GP tracking for dynticks. */
+	int  watching_snap;		/* Per-GP tracking for dynticks. */
 	bool rcu_need_heavy_qs;		/* GP old, so heavy quiescent state! */
 	bool rcu_urgent_qs;		/* GP old need light quiescent state. */
 	bool rcu_forced_tick;		/* Forced tick to provide QS. */