From c92fb05795f57463cb763a82f9053d294f77ea87 Mon Sep 17 00:00:00 2001 From: Nicolas Iooss Date: Tue, 5 May 2015 21:57:06 +0800 Subject: [PATCH] rcu: Make rcu_*_data variables static rcu_bh_data, rcu_sched_data and rcu_preempt_data are never used outside kernel/rcu/tree.c and thus can be made static. Doing so fixes a section mismatch warning reported by clang when building LLVMLinux with -Wsection, because these variables were declared in .data..percpu and defined in .data..percpu..shared_aligned since commit 11bbb235c26f ("rcu: Use DEFINE_PER_CPU_SHARED_ALIGNED for rcu_data"). Signed-off-by: Nicolas Iooss Reviewed-by: Josh Triplett Signed-off-by: Paul E. McKenney --- kernel/rcu/tree.c | 2 +- kernel/rcu/tree.h | 3 --- 2 files changed, 1 insertion(+), 4 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index f02830c85ec2..6efb0b66a30d 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -91,7 +91,7 @@ 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); \ +static DEFINE_PER_CPU_SHARED_ALIGNED(struct rcu_data, sname##_data); \ struct rcu_state sname##_state = { \ .level = { &sname##_state.node[0] }, \ .rda = &sname##_data, \ diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index dd5ce4034875..8079c5b22a8f 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -517,14 +517,11 @@ extern struct list_head rcu_struct_flavors; * RCU implementation internal declarations: */ extern struct rcu_state rcu_sched_state; -DECLARE_PER_CPU(struct rcu_data, rcu_sched_data); extern struct rcu_state rcu_bh_state; -DECLARE_PER_CPU(struct rcu_data, rcu_bh_data); #ifdef CONFIG_PREEMPT_RCU extern struct rcu_state rcu_preempt_state; -DECLARE_PER_CPU(struct rcu_data, rcu_preempt_data); #endif /* #ifdef CONFIG_PREEMPT_RCU */ #ifdef CONFIG_RCU_BOOST -- 2.20.1