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| author | Paul E. McKenney <paulmck@kernel.org> | 2021-07-22 15:49:05 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-09-13 16:32:45 -0700 |
| commit | 88ee23ef1c129e40309f4612f80dd74be4590c03 (patch) | |
| tree | 32238d27d652415f7c9bd5da3d9d05af54db555a /kernel/rcu/tree.c | |
| parent | 52b030aa278642194f5d25872c33360013b0167e (diff) | |
| download | linux-88ee23ef1c129e40309f4612f80dd74be4590c03.tar.bz2 | |
rcu: Eliminate rcu_implicit_dynticks_qs() local variable rnhqp
The rcu_implicit_dynticks_qs() function's local variable rnhqp references
the ->rcu_need_heavy_qs field in the rcu_data structure referenced by
the function parameter rdp, with a rather odd method for computing
the pointer to this field. This commit therefore simplifies things
and saves a few lines of code by replacing each instance of rnhqp with
&rdp->need_heavy_qs.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index c89f5e6c4154..18d2f35d1450 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1219,7 +1219,6 @@ static int dyntick_save_progress_counter(struct rcu_data *rdp) static int rcu_implicit_dynticks_qs(struct rcu_data *rdp) { unsigned long jtsq; - bool *rnhqp; bool *ruqp; struct rcu_node *rnp = rdp->mynode; @@ -1286,12 +1285,11 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp) */ jtsq = READ_ONCE(jiffies_to_sched_qs); ruqp = per_cpu_ptr(&rcu_data.rcu_urgent_qs, rdp->cpu); - rnhqp = per_cpu_ptr(&rcu_data.rcu_need_heavy_qs, rdp->cpu); - if (!READ_ONCE(*rnhqp) && + if (!READ_ONCE(rdp->rcu_need_heavy_qs) && (time_after(jiffies, rcu_state.gp_start + jtsq * 2) || time_after(jiffies, rcu_state.jiffies_resched) || rcu_state.cbovld)) { - WRITE_ONCE(*rnhqp, true); + WRITE_ONCE(rdp->rcu_need_heavy_qs, true); /* Store rcu_need_heavy_qs before rcu_urgent_qs. */ smp_store_release(ruqp, true); } else if (time_after(jiffies, rcu_state.gp_start + jtsq)) { |