Re: [patch 2.6.12-rc1-mm4] fork_connector: add a fork connector

[Andrew Morton <akpm@osdl.org>]

Guillaume Thouvenin <guillaume.thouvenin@bull.net> wrote:
>
>   This patch adds a fork connector in the do_fork() routine.

>  
> +config FORK_CONNECTOR
> +	bool "Enable fork connector"
> +	depends on CONNECTOR=y

This kind of defeats connector's ability to be built as a module.  Doing

	select CONNECTOR

may be better here.

> +static void cn_fork_callback(void *data) 
> +{
> +	struct cn_msg *msg = (struct cn_msg *)data;

The cast is unnecessary.

>  
>  extern int cn_already_initialized;
> +extern int cn_fork_enable;
> +extern struct cb_id cb_fork_id;

Should these declarations be inside CONFIG_FORK_CONNECTOR?

> +
> +static DEFINE_PER_CPU(unsigned long, fork_counts);
> +

This will cause fork_counts to be defined in each compilation unit which
includes this header file.  You should use DEFINE_PER_CPU in .c and
DECLARE_PER_CPU in .h.