linux-kernel - Re: [PATCH 06/10] iio: imu: icm42600: convert to use maple tree register cache

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Message-ID:
 <FR3P281MB1757F9B29C7A6A4FD06EFDB5CE74A@FR3P281MB1757.DEUP281.PROD.OUTLOOK.COM>
Date: Thu, 12 Jun 2025 09:08:12 +0000
From: Jean-Baptiste Maneyrol <Jean-Baptiste.Maneyrol@....com>
To: chuguangqing <chuguangqing@...pur.com>,
        Jonathan Cameron
	<jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich
	<Michael.Hennerich@...log.com>
CC: "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 06/10] iio: imu: icm42600: convert to use maple tree
 register cache

Hello,

no problem for me, thanks for the patch.

Acked-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@....com>

Thanks,
JB

________________________________________
From: chuguangqing <chuguangqing@...pur.com>
Sent: Wednesday, June 11, 2025 10:58
To: Jonathan Cameron <jic23@...nel.org>; Lars-Peter Clausen <lars@...afoo.de>; Michael Hennerich <Michael.Hennerich@...log.com>; Jean-Baptiste Maneyrol <Jean-Baptiste.Maneyrol@....com>
Cc: linux-iio@...r.kernel.org <linux-iio@...r.kernel.org>; linux-kernel@...r.kernel.org <linux-kernel@...r.kernel.org>; chuguangqing <chuguangqing@...pur.com>
Subject: [PATCH 06/10] iio: imu: icm42600: convert to use maple tree register cache
 
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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: chuguangqing <chuguangqing@...pur.com>
---
 drivers/iio/imu/inv_icm42600/inv_icm42600_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
index 63d46619ebfa..1fc4fddc2029 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
@@ -83,7 +83,7 @@ const struct regmap_config inv_icm42600_regmap_config = {
 	.num_ranges = ARRAY_SIZE(inv_icm42600_regmap_ranges),
 	.volatile_table = inv_icm42600_regmap_volatile_accesses,
 	.rd_noinc_table = inv_icm42600_regmap_rd_noinc_accesses,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 EXPORT_SYMBOL_NS_GPL(inv_icm42600_regmap_config, "IIO_ICM42600");
 
@@ -97,7 +97,7 @@ const struct regmap_config inv_icm42600_spi_regmap_config = {
 	.num_ranges = ARRAY_SIZE(inv_icm42600_regmap_ranges),
 	.volatile_table = inv_icm42600_regmap_volatile_accesses,
 	.rd_noinc_table = inv_icm42600_regmap_rd_noinc_accesses,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.use_single_write = true,
 };
 EXPORT_SYMBOL_NS_GPL(inv_icm42600_spi_regmap_config, "IIO_ICM42600");
-- 
2.31.1