Re: [PATCH] debugobjects: Use GFP_ATOMIC to allocate when initializing

[Thomas Gleixner <tglx@linutronix.de>]

On Sat, 31 Mar 2012, Sasha Levin wrote:

> During the init stage, we have only 1 cpu and run with IRQs disabled,
> we can't allocate with GFP_KERNEL.
> 
> This also fixes the related warning on boot.

Hrmm. This should not be the case. In early boot GFP_KERNEL
allocations should not trigger a warning when interrupts are
disabled. Which kind of warning are you observing ?

Thanks,

	tglx

 
> Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
> ---
>  lib/debugobjects.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/lib/debugobjects.c b/lib/debugobjects.c
> index 0ab9ae8..ece5e06 100644
> --- a/lib/debugobjects.c
> +++ b/lib/debugobjects.c
> @@ -1020,7 +1020,7 @@ static int __init debug_objects_replace_static_objects(void)
>  	int i, cnt = 0;
>  
>  	for (i = 0; i < ODEBUG_POOL_SIZE; i++) {
> -		obj = kmem_cache_zalloc(obj_cache, GFP_KERNEL);
> +		obj = kmem_cache_zalloc(obj_cache, GFP_ATOMIC);
>  		if (!obj)
>  			goto free;
>  		hlist_add_head(&obj->node, &objects);
> -- 
> 1.7.8.5
> 
>