[ltt-dev] [PATCH 02/10] init maxcpus before use it

[Mathieu Desnoyers]

* Lai Jiangshan (laijs at cn.fujitsu.com) wrote:
> Signed-off-by: Lai Jiangshan <laijs at cn.fujitsu.com>

    [ Edit:
      Covers the per-cpu call_rcu data setup (not all_cpus helper, which is
      why we did not trigger it in our tests. ]

Merged, thanks!

Mathieu

> ---
>  urcu-call-rcu-impl.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/urcu-call-rcu-impl.h b/urcu-call-rcu-impl.h
> index 700d128..e0a8fd8 100644
> --- a/urcu-call-rcu-impl.h
> +++ b/urcu-call-rcu-impl.h
> @@ -386,6 +386,7 @@ int set_cpu_call_rcu_data(int cpu, struct call_rcu_data *crdp)
>  	static int warned = 0;
>  
>  	call_rcu_lock(&call_rcu_mutex);
> +	alloc_cpu_call_rcu_data();
>  	if (cpu < 0 || maxcpus <= cpu) {
>  		if (!warned) {
>  			fprintf(stderr, "[error] liburcu: set CPU # out of range\n");
> @@ -395,7 +396,6 @@ int set_cpu_call_rcu_data(int cpu, struct call_rcu_data *crdp)
>  		errno = EINVAL;
>  		return -EINVAL;
>  	}
> -	alloc_cpu_call_rcu_data();
>  	call_rcu_unlock(&call_rcu_mutex);
>  	if (per_cpu_call_rcu_data == NULL) {
>  		errno = ENOMEM;
> -- 
> 1.7.4.4
> 

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com