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rcu: move some code from macro to function 

Shrink the RCU_INIT_FLAVOR() macro by moving all but the initialization
of the ->rda[] array to rcu_init_one().  The call to rcu_init_one()
can then be moved to the end of the RCU_INIT_FLAVOR() macro, which is
required because rcu_boot_init_percpu_data(), which is now called from
rcu_init_one(), depends on the initialization of the ->rda[] array.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Lai Jiangshan 2010-03-28 11:12:30 +08:00 committed by Paul E. McKenney
parent f261414f0d
commit 0c34029abd
1 changed files with 9 additions and 9 deletions
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18
kernel/rcutree.c
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@ -1859,6 +1859,14 @@ static void __init rcu_init_one(struct rcu_state *rsp)
INIT_LIST_HEAD(&rnp->blocked_tasks[3]); INIT_LIST_HEAD(&rnp->blocked_tasks[3]);
} }
} }
rnp = rsp->level[NUM_RCU_LVLS - 1];
for_each_possible_cpu(i) {
if (i > rnp->grphi)
rnp++;
rsp->rda[i]->mynode = rnp;
rcu_boot_init_percpu_data(i, rsp);
}
} }
/* /*
@ -1869,19 +1877,11 @@ static void __init rcu_init_one(struct rcu_state *rsp)
#define RCU_INIT_FLAVOR(rsp, rcu_data) \ #define RCU_INIT_FLAVOR(rsp, rcu_data) \
do { \ do { \
int i; \ int i; \
int j; \
struct rcu_node *rnp; \
\ \
rcu_init_one(rsp); \
rnp = (rsp)->level[NUM_RCU_LVLS - 1]; \
j = 0; \
for_each_possible_cpu(i) { \ for_each_possible_cpu(i) { \
if (i > rnp[j].grphi) \
j++; \
per_cpu(rcu_data, i).mynode = &rnp[j]; \
(rsp)->rda[i] = &per_cpu(rcu_data, i); \ (rsp)->rda[i] = &per_cpu(rcu_data, i); \
rcu_boot_init_percpu_data(i, rsp); \
} \ } \
rcu_init_one(rsp); \
} while (0) } while (0)
void __init rcu_init(void) void __init rcu_init(void)