Re: [PATCH] rcupdate: move synchronize_sched() back to rcupdate.c V2

[Ingo Molnar <mingo@elte.hu>]

* Lai Jiangshan <laijs@cn.fujitsu.com> wrote:

> this fix remove ugly macro, and increase readability for rcupdate codes

looks good to me, if Paul acks the concept too.

Two small details:

> +++ b/include/linux/rcuclassic.h
> @@ -32,6 +32,7 @@
>  
>  #ifndef __LINUX_RCUCLASSIC_H
>  #define __LINUX_RCUCLASSIC_H
> +#define HAVE_SPECIAL_RCU_BH

please use def_bool to define CONFIG_RCU_HAVE_SPECIAL_RCU_BH

and:

> +#else
> +#define rcu_bh_qsctr_inc(cpu)
> +#define rcu_read_lock_bh()	{ rcu_read_lock(); local_bh_disable(); }
> +#define rcu_read_unlock_bh()	{ local_bh_enable(); rcu_read_unlock(); }
> +#endif /* HAVE_SPECIAL_RCU_BH */

use inline functions please. CPP defines should never be used in new 
code. (use inlines instead of macros and enums/const instead of 
constant #define's)

	Ingo