diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-01-20 22:44:13 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-02-26 12:01:27 -0800 |
| commit | 2723249a31a68ccc0ec8ac59a905d7f9430bf8f6 (patch) | |
| tree | 795977fb8960723ead95a6614784ed209a92172a /kernel/rcu | |
| parent | d3f3f3f25b1d4ee152f3f19a812c3a282da4c120 (diff) | |
rcu: Wire ->rda pointers at compile time
This commit wires up the rcu_state structures' ->rda pointers to the
per-CPU rcu_data structures at compile time, thus ensuring that this
linkage is present at early boot, in turn allowing posting of callbacks
before rcu_init() is executed.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index f8cdb92da10b..d2fa95e4a268 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -91,8 +91,10 @@ static const char *tp_##sname##_varname __used __tracepoint_string = sname##_var #define RCU_STATE_INITIALIZER(sname, sabbr, cr) \ DEFINE_RCU_TPS(sname) \ +DEFINE_PER_CPU_SHARED_ALIGNED(struct rcu_data, sname##_data); \ struct rcu_state sname##_state = { \ .level = { &sname##_state.node[0] }, \ + .rda = &sname##_data, \ .call = cr, \ .fqs_state = RCU_GP_IDLE, \ .gpnum = 0UL - 300UL, \ @@ -104,8 +106,7 @@ struct rcu_state sname##_state = { \ .onoff_mutex = __MUTEX_INITIALIZER(sname##_state.onoff_mutex), \ .name = RCU_STATE_NAME(sname), \ .abbr = sabbr, \ -}; \ -DEFINE_PER_CPU_SHARED_ALIGNED(struct rcu_data, sname##_data) +} RCU_STATE_INITIALIZER(rcu_sched, 's', call_rcu_sched); RCU_STATE_INITIALIZER(rcu_bh, 'b', call_rcu_bh); @@ -3843,7 +3844,6 @@ static void __init rcu_init_one(struct rcu_state *rsp, } } - rsp->rda = rda; init_waitqueue_head(&rsp->gp_wq); rnp = rsp->level[rcu_num_lvls - 1]; for_each_possible_cpu(i) { |