[PATCH v3 3/6] mm: Ratelimited mirrored memory related warning messages

[Anshuman Khandual]

On 6/7/22 15:08, Wupeng Ma wrote:
> From: Ma Wupeng <mawupeng1 at huawei.com>
> 
> If system has mirrored memory, memblock will try to allocate mirrored
> memory firstly and fallback to non-mirrored memory when fails, but if with
> limited mirrored memory or some numa node without mirrored memory, lots of
> warning message about memblock allocation will occur.
> 
> This patch ratelimit the warning message to avoid a very long print during
> bootup.
> 
> Signed-off-by: Ma Wupeng <mawupeng1 at huawei.com>
> ---
>  mm/memblock.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/memblock.c b/mm/memblock.c
> index e4f03a6e8e56..b1d2a0009733 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -327,7 +327,7 @@ static phys_addr_t __init_memblock memblock_find_in_range(phys_addr_t start,
>  					    NUMA_NO_NODE, flags);
>  
>  	if (!ret && (flags & MEMBLOCK_MIRROR)) {
> -		pr_warn("Could not allocate %pap bytes of mirrored memory\n",
> +		pr_warn_ratelimited("Could not allocate %pap bytes of mirrored memory\n",
>  			&size);
>  		flags &= ~MEMBLOCK_MIRROR;
>  		goto again;
> @@ -1384,7 +1384,7 @@ phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
>  
>  	if (flags & MEMBLOCK_MIRROR) {
>  		flags &= ~MEMBLOCK_MIRROR;
> -		pr_warn("Could not allocate %pap bytes of mirrored memory\n",
> +		pr_warn_ratelimited("Could not allocate %pap bytes of mirrored memory\n",
>  			&size);
>  		goto again;
>  	}

Reviewed-by: Anshuman Khandual <anshuman.khandual at arm.com>