linux-kernel - Re: [PATCH 2/4] gcov: use within

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Message-ID: <5640571F.2040609@linux.vnet.ibm.com>
Date:	Mon, 9 Nov 2015 09:19:43 +0100
From:	Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>
To:	Rusty Russell <rusty@...tcorp.com.au>, linux-kernel@...r.kernel.org
Cc:	Josh Poimboeuf <jpoimboe@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH 2/4] gcov: use within_module() helper.

On 09.11.2015 05:23, Rusty Russell wrote:
> An exact mapping would be within_module_core(), but at this stage
> (MODULE_STATE_GOING) the init section is empty, and this is clearer.
> 
> Cc: Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>
> Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
> ---
>  kernel/gcov/base.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c
> index 7080ae1eb6c1..2f9df37940a0 100644
> --- a/kernel/gcov/base.c
> +++ b/kernel/gcov/base.c
> @@ -123,11 +123,6 @@ void gcov_enable_events(void)
>  }
> 
>  #ifdef CONFIG_MODULES
> -static inline int within(void *addr, void *start, unsigned long size)
> -{
> -	return ((addr >= start) && (addr < start + size));
> -}
> -
>  /* Update list and generate events when modules are unloaded. */
>  static int gcov_module_notifier(struct notifier_block *nb, unsigned long event,
>  				void *data)
> @@ -142,7 +137,7 @@ static int gcov_module_notifier(struct notifier_block *nb, unsigned long event,
> 
>  	/* Remove entries located in module from linked list. */
>  	while ((info = gcov_info_next(info))) {
> -		if (within(info, mod->module_core, mod->core_size)) {
> +		if (within_module((unsigned long)info, mod)) {
>  			gcov_info_unlink(prev, info);
>  			if (gcov_events_enabled)
>  				gcov_event(GCOV_REMOVE, info);

Reviewed-by: Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>

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