[PATCH v2 17/27] rcu: Rename rcu_dynticks_in_eqs() into rcu_watching_in_eqs()

From: Valentin Schneider
Date: Tue Apr 30 2024 - 05:23:21 EST


The context_tracking.state RCU_DYNTICKS subvariable has been renamed to
RCU_WATCHING, reflect that change in the related helpers.

Signed-off-by: Valentin Schneider <vschneid@xxxxxxxxxx>
---
kernel/rcu/tree.c | 8 ++++----
kernel/rcu/tree_exp.h | 2 +-
kernel/rcu/tree_stall.h | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 857c2565efeac..d772755ccd564 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -308,9 +308,9 @@ static int rcu_watching_snap(int cpu)

/*
* Return true if the snapshot returned from rcu_watching_snap()
- * indicates that RCU is in an extended quiescent state.
+ * indicates that RCU in an extended quiescent state (not watching).
*/
-static bool rcu_dynticks_in_eqs(int snap)
+static bool rcu_watching_in_eqs(int snap)
{
return !(snap & CT_RCU_WATCHING);
}
@@ -771,7 +771,7 @@ static void rcu_gpnum_ovf(struct rcu_node *rnp, struct rcu_data *rdp)
static int dyntick_save_progress_counter(struct rcu_data *rdp)
{
rdp->dynticks_snap = rcu_watching_snap(rdp->cpu);
- if (rcu_dynticks_in_eqs(rdp->dynticks_snap)) {
+ if (rcu_watching_in_eqs(rdp->dynticks_snap)) {
trace_rcu_fqs(rcu_state.name, rdp->gp_seq, rdp->cpu, TPS("dti"));
rcu_gpnum_ovf(rdp->mynode, rdp);
return 1;
@@ -4798,7 +4798,7 @@ rcu_boot_init_percpu_data(int cpu)
rdp->grpmask = leaf_node_cpu_bit(rdp->mynode, cpu);
INIT_WORK(&rdp->strict_work, strict_work_handler);
WARN_ON_ONCE(ct->nesting != 1);
- WARN_ON_ONCE(rcu_dynticks_in_eqs(rcu_watching_snap(cpu)));
+ WARN_ON_ONCE(rcu_watching_in_eqs(rcu_watching_snap(cpu)));
rdp->barrier_seq_snap = rcu_state.barrier_sequence;
rdp->rcu_ofl_gp_seq = rcu_state.gp_seq;
rdp->rcu_ofl_gp_state = RCU_GP_CLEANED;
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index 50ec57304c1b7..68dea1427c8bd 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -358,7 +358,7 @@ static void __sync_rcu_exp_select_node_cpus(struct rcu_exp_work *rewp)
mask_ofl_test |= mask;
} else {
snap = rcu_watching_snap(cpu);
- if (rcu_dynticks_in_eqs(snap))
+ if (rcu_watching_in_eqs(snap))
mask_ofl_test |= mask;
else
rdp->exp_dynticks_snap = snap;
diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h
index 4fa23f9fc207f..589f1be8ff921 100644
--- a/kernel/rcu/tree_stall.h
+++ b/kernel/rcu/tree_stall.h
@@ -501,7 +501,7 @@ static void print_cpu_stall_info(int cpu)
}
delta = rcu_seq_ctr(rdp->mynode->gp_seq - rdp->rcu_iw_gp_seq);
falsepositive = rcu_is_gp_kthread_starving(NULL) &&
- rcu_dynticks_in_eqs(rcu_watching_snap(cpu));
+ rcu_watching_in_eqs(rcu_watching_snap(cpu));
rcuc_starved = rcu_is_rcuc_kthread_starving(rdp, &j);
if (rcuc_starved)
// Print signed value, as negative values indicate a probable bug.
--
2.43.0