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Message-ID: <ab8d9d0a-aad4-42b7-9e24-9ae6acf7c939@gmail.com>
Date: Wed, 7 Feb 2024 09:57:54 +0200
From: Matti Vaittinen <mazziesaccount@...il.com>
To: Bo Liu <liubo03@...pur.com>, lee@...nel.org, wens@...e.org,
marek.vasut+renesas@...il.com, support.opensource@...semi.com,
neil.armstrong@...aro.org, ckeepax@...nsource.cirrus.com,
rf@...nsource.cirrus.com, mcoquelin.stm32@...il.com,
alexandre.torgue@...s.st.com
Cc: linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
linux-amlogic@...ts.infradead.org, patches@...nsource.cirrus.com,
linux-stm32@...md-mailman.stormreply.com,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 11/18] mfd: rohm: convert to use maple tree register cache
On 2/6/24 09:13, 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>
Acked-by: Matti Vaittinen <mazziesaccount@...il.com>
> ---
> drivers/mfd/rohm-bd71828.c | 4 ++--
> drivers/mfd/rohm-bd718x7.c | 2 +-
> drivers/mfd/rohm-bd9576.c | 2 +-
> 3 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
> index 594718f7e8e1..2f3826c7eef4 100644
> --- a/drivers/mfd/rohm-bd71828.c
> +++ b/drivers/mfd/rohm-bd71828.c
> @@ -197,7 +197,7 @@ static const struct regmap_config bd71815_regmap = {
> .val_bits = 8,
> .volatile_table = &bd71815_volatile_regs,
> .max_register = BD71815_MAX_REGISTER - 1,
> - .cache_type = REGCACHE_RBTREE,
> + .cache_type = REGCACHE_MAPLE,
> };
>
> static const struct regmap_config bd71828_regmap = {
> @@ -205,7 +205,7 @@ static const struct regmap_config bd71828_regmap = {
> .val_bits = 8,
> .volatile_table = &bd71828_volatile_regs,
> .max_register = BD71828_MAX_REGISTER,
> - .cache_type = REGCACHE_RBTREE,
> + .cache_type = REGCACHE_MAPLE,
> };
>
> /*
> diff --git a/drivers/mfd/rohm-bd718x7.c b/drivers/mfd/rohm-bd718x7.c
> index 4798bdf27afb..7755a4c073bf 100644
> --- a/drivers/mfd/rohm-bd718x7.c
> +++ b/drivers/mfd/rohm-bd718x7.c
> @@ -87,7 +87,7 @@ static const struct regmap_config bd718xx_regmap_config = {
> .val_bits = 8,
> .volatile_table = &volatile_regs,
> .max_register = BD718XX_MAX_REGISTER - 1,
> - .cache_type = REGCACHE_RBTREE,
> + .cache_type = REGCACHE_MAPLE,
> };
>
> static int bd718xx_init_press_duration(struct regmap *regmap,
> diff --git a/drivers/mfd/rohm-bd9576.c b/drivers/mfd/rohm-bd9576.c
> index bceac7016740..3a9f61961721 100644
> --- a/drivers/mfd/rohm-bd9576.c
> +++ b/drivers/mfd/rohm-bd9576.c
> @@ -62,7 +62,7 @@ static struct regmap_config bd957x_regmap = {
> .val_bits = 8,
> .volatile_table = &volatile_regs,
> .max_register = BD957X_MAX_REGISTER,
> - .cache_type = REGCACHE_RBTREE,
> + .cache_type = REGCACHE_MAPLE,
> };
>
> static struct regmap_irq bd9576_irqs[] = {
--
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland
~~ When things go utterly wrong vim users can always type :help! ~~
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