[PATCH -rcu dev 1/3] rcu/tree: tick_dep_set/clear_cpu should accept bits instead of masks

[Joel Fernandes (Google)]

This commit fixes the issue.

Signed-off-by: Joel Fernandes (Google) <j...@joelfernandes.org>
---
 kernel/rcu/tree.c | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 0512de9ead20..322b1b57967c 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -829,7 +829,7 @@ static __always_inline void rcu_nmi_enter_common(bool irq)
                   !rdp->dynticks_nmi_nesting &&
                   rdp->rcu_urgent_qs && !rdp->rcu_forced_tick) {
                rdp->rcu_forced_tick = true;
-               tick_dep_set_cpu(rdp->cpu, TICK_DEP_MASK_RCU);
+               tick_dep_set_cpu(rdp->cpu, TICK_DEP_BIT_RCU);
        }
        trace_rcu_dyntick(incby == 1 ? TPS("Endirq") : TPS("++="),
                          rdp->dynticks_nmi_nesting,
@@ -898,7 +898,7 @@ void rcu_irq_enter_irqson(void)
 void rcu_disable_tick_upon_qs(struct rcu_data *rdp)
 {
        if (tick_nohz_full_cpu(rdp->cpu) && rdp->rcu_forced_tick) {
-               tick_dep_clear_cpu(rdp->cpu, TICK_DEP_MASK_RCU);
+               tick_dep_clear_cpu(rdp->cpu, TICK_DEP_BIT_RCU);
                rdp->rcu_forced_tick = false;
        }
 }
@@ -2123,8 +2123,9 @@ int rcutree_dead_cpu(unsigned int cpu)
        do_nocb_deferred_wakeup(per_cpu_ptr(&rcu_data, cpu));
 
        // Stop-machine done, so allow nohz_full to disable tick.
-       for_each_online_cpu(c)
-               tick_dep_clear_cpu(c, TICK_DEP_MASK_RCU);
+       for_each_online_cpu(c) {
+               tick_dep_clear_cpu(c, TICK_DEP_BIT_RCU);
+       }
        return 0;
 }
 
@@ -2175,8 +2176,9 @@ static void rcu_do_batch(struct rcu_data *rdp)
        rcu_nocb_unlock_irqrestore(rdp, flags);
 
        /* Invoke callbacks. */
-       if (IS_ENABLED(CONFIG_NO_HZ_FULL))
-               tick_dep_set_task(current, TICK_DEP_MASK_RCU);
+       if (IS_ENABLED(CONFIG_NO_HZ_FULL)) {
+               tick_dep_set_task(current, TICK_DEP_BIT_RCU);
+       }
        rhp = rcu_cblist_dequeue(&rcl);
        for (; rhp; rhp = rcu_cblist_dequeue(&rcl)) {
                debug_rcu_head_unqueue(rhp);
@@ -2243,8 +2245,9 @@ static void rcu_do_batch(struct rcu_data *rdp)
        /* Re-invoke RCU core processing if there are callbacks remaining. */
        if (!offloaded && rcu_segcblist_ready_cbs(&rdp->cblist))
                invoke_rcu_core();
-       if (IS_ENABLED(CONFIG_NO_HZ_FULL))
-               tick_dep_clear_task(current, TICK_DEP_MASK_RCU);
+       if (IS_ENABLED(CONFIG_NO_HZ_FULL)) {
+               tick_dep_clear_task(current, TICK_DEP_BIT_RCU);
+       }
 }
 
 /*
@@ -3118,8 +3121,9 @@ int rcutree_online_cpu(unsigned int cpu)
        rcutree_affinity_setting(cpu, -1);
 
        // Stop-machine done, so allow nohz_full to disable tick.
-       for_each_online_cpu(c)
-               tick_dep_clear_cpu(c, TICK_DEP_MASK_RCU);
+       for_each_online_cpu(c) {
+               tick_dep_clear_cpu(c, TICK_DEP_BIT_RCU);
+       }
        return 0;
 }
 
@@ -3143,8 +3147,9 @@ int rcutree_offline_cpu(unsigned int cpu)
        rcutree_affinity_setting(cpu, cpu);
 
        // nohz_full CPUs need the tick for stop-machine to work quickly
-       for_each_online_cpu(c)
-               tick_dep_set_cpu(c, TICK_DEP_MASK_RCU);
+       for_each_online_cpu(c) {
+               tick_dep_set_cpu(c, TICK_DEP_BIT_RCU);
+       }
        return 0;
 }
 
-- 
2.23.0.rc1.153.gdeed80330f-goog