linux-kernel - Re: [PATCH] net: ieee802154: at86rf230: convert to use maple tree register cache

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Date: Mon, 26 Feb 2024 21:48:40 +0100
From: Stefan Schmidt <stefan@...enfreihafen.org>
To: Bo Liu <liubo03@...pur.com>, alex.aring@...il.com,
 miquel.raynal@...tlin.com, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com
Cc: linux-wpan@...r.kernel.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: ieee802154: at86rf230: convert to use maple tree
 register cache

Hello,

On 02.02.24 07:45, Bo Liu wrote:
> The maple tree register cache is based on a much more modern data structure
> than the rbtree cache and makes optimisation choices which are probably
> more appropriate for modern systems than those made by the rbtree cache.
> 
> Signed-off-by: Bo Liu <liubo03@...pur.com>
> ---
>   drivers/net/ieee802154/at86rf230.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
> index 164c7f605af5..6212164ffb36 100644
> --- a/drivers/net/ieee802154/at86rf230.c
> +++ b/drivers/net/ieee802154/at86rf230.c
> @@ -316,7 +316,7 @@ static const struct regmap_config at86rf230_regmap_spi_config = {
>   	.val_bits = 8,
>   	.write_flag_mask = CMD_REG | CMD_WRITE,
>   	.read_flag_mask = CMD_REG,
> -	.cache_type = REGCACHE_RBTREE,
> +	.cache_type = REGCACHE_MAPLE,
>   	.max_register = AT86RF2XX_NUMREGS,
>   	.writeable_reg = at86rf230_reg_writeable,
>   	.readable_reg = at86rf230_reg_readable,

This patch has been applied to the wpan-next tree and will be
part of the next pull request to net-next. Thanks!

regards
Stefan Schmidt