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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>
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parent
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1 changed files with 3 additions and 3 deletions
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@ -91,8 +91,10 @@ static const char *tp_##sname##_varname __used __tracepoint_string = sname##_var
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#define RCU_STATE_INITIALIZER(sname, sabbr, cr) \
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DEFINE_RCU_TPS(sname) \
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DEFINE_PER_CPU_SHARED_ALIGNED(struct rcu_data, sname##_data); \
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struct rcu_state sname##_state = { \
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.level = { &sname##_state.node[0] }, \
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.rda = &sname##_data, \
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.call = cr, \
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.fqs_state = RCU_GP_IDLE, \
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.gpnum = 0UL - 300UL, \
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@ -104,8 +106,7 @@ struct rcu_state sname##_state = { \
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.onoff_mutex = __MUTEX_INITIALIZER(sname##_state.onoff_mutex), \
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.name = RCU_STATE_NAME(sname), \
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.abbr = sabbr, \
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}; \
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DEFINE_PER_CPU_SHARED_ALIGNED(struct rcu_data, sname##_data)
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}
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RCU_STATE_INITIALIZER(rcu_sched, 's', call_rcu_sched);
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RCU_STATE_INITIALIZER(rcu_bh, 'b', call_rcu_bh);
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@ -3843,7 +3844,6 @@ static void __init rcu_init_one(struct rcu_state *rsp,
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}
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}
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rsp->rda = rda;
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init_waitqueue_head(&rsp->gp_wq);
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rnp = rsp->level[rcu_num_lvls - 1];
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for_each_possible_cpu(i) {
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