On Sat, 2011-11-19 at 13:50 +0100, John Kacur wrote:
> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cherry-picked for v3.0-rt and fixed minor merge conflict
> Signed-off-by: John Kacur <jkacur@xxxxxxxxxx>
> ---
> kernel/rcutiny.c | 2 ++
Is this really needed?
>From init/Kconfig:
config TINY_RCU
bool "UP-only small-memory-footprint RCU"
depends on !SMP && !PREEMPT_RT_FULL
This code isn't even compiled when PREEMPT_RT_FULL is set.
-- Steve
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
> index 7bbac7d..f1e4bee 100644
> --- a/kernel/rcutiny.c
> +++ b/kernel/rcutiny.c
> @@ -271,6 +271,7 @@ void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
> }
> EXPORT_SYMBOL_GPL(call_rcu_sched);
>
> +#ifndef CONFIG_PREEMPT_RT_FULL
> /*
> * Post an RCU bottom-half callback to be invoked after any subsequent
> * quiescent state.
> @@ -280,6 +281,7 @@ void call_rcu_bh(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
> __call_rcu(head, func, &rcu_bh_ctrlblk);
> }
> EXPORT_SYMBOL_GPL(call_rcu_bh);
> +#endif
>
> void rcu_barrier_bh(void)
> {
--
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