linux-kernel - [PATCH rdma-next 6/9] net/mlx5: Drop MR cache related code

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Message-ID: <20251116-frmr_pools-v1-6-5eb3c8f5c9c4@nvidia.com>
Date: Sun, 16 Nov 2025 21:10:27 +0200
From: Edward Srouji <edwards@...dia.com>
To: Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>, "Saeed
 Mahameed" <saeedm@...dia.com>, Tariq Toukan <tariqt@...dia.com>, Mark Bloch
	<mbloch@...dia.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
CC: <linux-kernel@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
	<netdev@...r.kernel.org>, Michael Guralnik <michaelgur@...dia.com>, "Edward
 Srouji" <edwards@...dia.com>, Yishai Hadas <yishaih@...dia.com>
Subject: [PATCH rdma-next 6/9] net/mlx5: Drop MR cache related code

From: Michael Guralnik <michaelgur@...dia.com>

Following mlx5_ib move to using FRMR pools, drop all unused code of MR
cache.

Signed-off-by: Michael Guralnik <michaelgur@...dia.com>
Reviewed-by: Yishai Hadas <yishaih@...dia.com>
Signed-off-by: Edward Srouji <edwards@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 67 +-------------------------
 include/linux/mlx5/driver.h                    | 11 -----
 2 files changed, 1 insertion(+), 77 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index df93625c9dfa3a11b769acdcab1320a6a4aeb4b0..cb2a58c789e992f8b06e9108c3ecc41e14276d65 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -110,74 +110,9 @@ static struct mlx5_profile profile[] = {
 
 	},
 	[2] = {
-		.mask		= MLX5_PROF_MASK_QP_SIZE |
-				  MLX5_PROF_MASK_MR_CACHE,
+		.mask		= MLX5_PROF_MASK_QP_SIZE,
 		.log_max_qp	= LOG_MAX_SUPPORTED_QPS,
 		.num_cmd_caches = MLX5_NUM_COMMAND_CACHES,
-		.mr_cache[0]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[1]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[2]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[3]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[4]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[5]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[6]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[7]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[8]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[9]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[10]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[11]	= {
-			.size	= 500,
-			.limit	= 250
-		},
-		.mr_cache[12]	= {
-			.size	= 64,
-			.limit	= 32
-		},
-		.mr_cache[13]	= {
-			.size	= 32,
-			.limit	= 16
-		},
-		.mr_cache[14]	= {
-			.size	= 16,
-			.limit	= 8
-		},
-		.mr_cache[15]	= {
-			.size	= 8,
-			.limit	= 4
-		},
 	},
 	[3] = {
 		.mask		= MLX5_PROF_MASK_QP_SIZE,
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 5405ca1038f9ea175ea5bc028e801bb8d7de9311..975cd8705a58f68f2ff101b72c893b8a882b2806 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -699,23 +699,12 @@ struct mlx5_st;
 
 enum {
 	MLX5_PROF_MASK_QP_SIZE		= (u64)1 << 0,
-	MLX5_PROF_MASK_MR_CACHE		= (u64)1 << 1,
-};
-
-enum {
-	MKEY_CACHE_LAST_STD_ENTRY = 20,
-	MLX5_IMR_KSM_CACHE_ENTRY,
-	MAX_MKEY_CACHE_ENTRIES
 };
 
 struct mlx5_profile {
 	u64	mask;
 	u8	log_max_qp;
 	u8	num_cmd_caches;
-	struct {
-		int	size;
-		int	limit;
-	} mr_cache[MAX_MKEY_CACHE_ENTRIES];
 };
 
 struct mlx5_hca_cap {

-- 
2.47.1