Commit 65cf8f86 authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Ingo Molnar
Browse files

rcu: Merge per-RCU-flavor initialization into pre-existing macro 



Rename the RCU_DATA_PTR_INIT() macro to RCU_INIT_FLAVOR() and
make it do the rcu_init_one() and rcu_boot_init_percpu_data()
calls.  Merge the loop that was in the original macro with the
loops that were in __rcu_init().

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josht@linux.vnet.ibm.com
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
LKML-Reference: <12509746133916-git-send-email->
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 5699ed8f

kernel/rcutree.c

+5 −9
Original line number Diff line number Diff line
@@ -1543,8 +1543,9 @@ static void __init rcu_init_one(struct rcu_state *rsp) 
 * Helper macro for __rcu_init().  To be used nowhere else!

 * Assigns leaf node pointers into each CPU's rcu_data structure.

 */

#define RCU_DATA_PTR_INIT(rsp, rcu_data) \

#define RCU_INIT_FLAVOR(rsp, rcu_data) \

do { \

	rcu_init_one(rsp); \

	rnp = (rsp)->level[NUM_RCU_LVLS - 1]; \

	j = 0; \

	for_each_possible_cpu(i) { \
@@ -1552,6 +1553,7 @@ do { \ 
			j++; \

		per_cpu(rcu_data, i).mynode = &rnp[j]; \

		(rsp)->rda[i] = &per_cpu(rcu_data, i); \

		rcu_boot_init_percpu_data(i, rsp); \

	} \

} while (0)
@@ -1565,14 +1567,8 @@ void __init __rcu_init(void) 
#ifdef CONFIG_RCU_CPU_STALL_DETECTOR

	printk(KERN_INFO "RCU-based detection of stalled CPUs is enabled.\n");

#endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */

	rcu_init_one(&rcu_sched_state);

	RCU_DATA_PTR_INIT(&rcu_sched_state, rcu_sched_data);

	for_each_possible_cpu(i)

		rcu_boot_init_percpu_data(i, &rcu_sched_state);

	rcu_init_one(&rcu_bh_state);

	RCU_DATA_PTR_INIT(&rcu_bh_state, rcu_bh_data);

	for_each_possible_cpu(i)

		rcu_boot_init_percpu_data(i, &rcu_bh_state);

	RCU_INIT_FLAVOR(&rcu_sched_state, rcu_sched_data);

	RCU_INIT_FLAVOR(&rcu_bh_state, rcu_bh_data);

	open_softirq(RCU_SOFTIRQ, rcu_process_callbacks);

}

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