rcu: Remove unneeded __rcu_process_callbacks() argument
With the advent of __this_cpu_ptr(), it is no longer necessary to pass both the rcu_state and rcu_data structures into __rcu_process_callbacks(). This commit therefore computes the rcu_data pointer from the rcu_state pointer within __rcu_process_callbacks() so that callers can pass in only the pointer to the rcu_state structure. This paves the way for linking the rcu_state structures together and iterating over them. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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d7e187c8e9
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1bca8cf1a2
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@ -1788,9 +1788,10 @@ unlock_fqs_ret:
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* whom the rdp belongs.
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* whom the rdp belongs.
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*/
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*/
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static void
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static void
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__rcu_process_callbacks(struct rcu_state *rsp, struct rcu_data *rdp)
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__rcu_process_callbacks(struct rcu_state *rsp)
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{
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{
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unsigned long flags;
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unsigned long flags;
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struct rcu_data *rdp = __this_cpu_ptr(rsp->rda);
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WARN_ON_ONCE(rdp->beenonline == 0);
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WARN_ON_ONCE(rdp->beenonline == 0);
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@ -1827,9 +1828,8 @@ __rcu_process_callbacks(struct rcu_state *rsp, struct rcu_data *rdp)
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static void rcu_process_callbacks(struct softirq_action *unused)
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static void rcu_process_callbacks(struct softirq_action *unused)
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{
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{
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trace_rcu_utilization("Start RCU core");
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trace_rcu_utilization("Start RCU core");
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__rcu_process_callbacks(&rcu_sched_state,
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__rcu_process_callbacks(&rcu_sched_state);
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&__get_cpu_var(rcu_sched_data));
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__rcu_process_callbacks(&rcu_bh_state);
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__rcu_process_callbacks(&rcu_bh_state, &__get_cpu_var(rcu_bh_data));
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rcu_preempt_process_callbacks();
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rcu_preempt_process_callbacks();
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trace_rcu_utilization("End RCU core");
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trace_rcu_utilization("End RCU core");
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}
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}
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@ -687,8 +687,7 @@ static void rcu_preempt_check_callbacks(int cpu)
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*/
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*/
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static void rcu_preempt_process_callbacks(void)
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static void rcu_preempt_process_callbacks(void)
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{
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{
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__rcu_process_callbacks(&rcu_preempt_state,
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__rcu_process_callbacks(&rcu_preempt_state);
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&__get_cpu_var(rcu_preempt_data));
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}
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}
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#ifdef CONFIG_RCU_BOOST
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#ifdef CONFIG_RCU_BOOST
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