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Commit e4fa4c97 authored by Lai Jiangshan's avatar Lai Jiangshan Committed by Ingo Molnar
Browse files

rcu: add __cpuinit to rcu_init_percpu_data() 



Impact: reduce memory footprint

add __cpuinit to rcu_init_percpu_data(), and this function's text
will be discarded after boot when !CONFIG_HOTPLUG_CPU.

Signed-off-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent a6525042

kernel/rcuclassic.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -716,7 +716,7 @@ void rcu_check_callbacks(int cpu, int user) 
	raise_rcu_softirq();

	raise_rcu_softirq();

}

}





static void rcu_init_percpu_data(int cpu, struct rcu_ctrlblk *rcp,

static void __cpuinit rcu_init_percpu_data(int cpu, struct rcu_ctrlblk *rcp,

						struct rcu_data *rdp)

						struct rcu_data *rdp)

{

{

	unsigned long flags;

	unsigned long flags;

kernel/rcutree.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -1314,7 +1314,7 @@ int rcu_needs_cpu(int cpu) 
 * access due to the fact that this CPU cannot possibly have any RCU

 * access due to the fact that this CPU cannot possibly have any RCU

 * callbacks in flight yet.

 * callbacks in flight yet.

 */

 */

static void

static void __cpuinit

rcu_init_percpu_data(int cpu, struct rcu_state *rsp)

rcu_init_percpu_data(int cpu, struct rcu_state *rsp)

{

{

	unsigned long flags;

	unsigned long flags;