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Message-Id: <20230412040752.14220-11-saeed@kernel.org>
Date: Tue, 11 Apr 2023 21:07:47 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
Tariq Toukan <tariqt@...dia.com>,
Parav Pandit <parav@...lanox.com>,
Bodong Wang <bodong@...dia.com>
Subject: [net-next 10/15] net/mlx5: Create a new profile for SFs
From: Parav Pandit <parav@...lanox.com>
Create a new profile for SFs in order to disable the command cache.
Each function command cache consumes ~500KB of memory, when using a
large number of SFs this savings is notable on memory constarined
systems.
Use a new profile to provide for future differences between SFs and PFs.
The mr_cache not used for non-PF functions, so it is excluded from the
new profile.
Signed-off-by: Parav Pandit <parav@...lanox.com>
Reviewed-by: Bodong Wang <bodong@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 6 +++---
drivers/net/ethernet/mellanox/mlx5/core/main.c | 9 +++++++++
drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h | 1 +
drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c | 2 +-
include/linux/mlx5/driver.h | 1 +
5 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
index b00e33ed05e9..d53de39539a8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -1802,7 +1802,7 @@ static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size,
if (in_size <= 16)
goto cache_miss;
- for (i = 0; i < MLX5_NUM_COMMAND_CACHES; i++) {
+ for (i = 0; i < dev->profile.num_cmd_caches; i++) {
ch = &cmd->cache[i];
if (in_size > ch->max_inbox_size)
continue;
@@ -2097,7 +2097,7 @@ static void destroy_msg_cache(struct mlx5_core_dev *dev)
struct mlx5_cmd_msg *n;
int i;
- for (i = 0; i < MLX5_NUM_COMMAND_CACHES; i++) {
+ for (i = 0; i < dev->profile.num_cmd_caches; i++) {
ch = &dev->cmd.cache[i];
list_for_each_entry_safe(msg, n, &ch->head, list) {
list_del(&msg->list);
@@ -2127,7 +2127,7 @@ static void create_msg_cache(struct mlx5_core_dev *dev)
int k;
/* Initialize and fill the caches with initial entries */
- for (k = 0; k < MLX5_NUM_COMMAND_CACHES; k++) {
+ for (k = 0; k < dev->profile.num_cmd_caches; k++) {
ch = &cmd->cache[k];
spin_lock_init(&ch->lock);
INIT_LIST_HEAD(&ch->head);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index f95df73d1089..a95d1218def9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -100,15 +100,19 @@ enum {
static struct mlx5_profile profile[] = {
[0] = {
.mask = 0,
+ .num_cmd_caches = MLX5_NUM_COMMAND_CACHES,
},
[1] = {
.mask = MLX5_PROF_MASK_QP_SIZE,
.log_max_qp = 12,
+ .num_cmd_caches = MLX5_NUM_COMMAND_CACHES,
+
},
[2] = {
.mask = MLX5_PROF_MASK_QP_SIZE |
MLX5_PROF_MASK_MR_CACHE,
.log_max_qp = LOG_MAX_SUPPORTED_QPS,
+ .num_cmd_caches = MLX5_NUM_COMMAND_CACHES,
.mr_cache[0] = {
.size = 500,
.limit = 250
@@ -174,6 +178,11 @@ static struct mlx5_profile profile[] = {
.limit = 4
},
},
+ [3] = {
+ .mask = MLX5_PROF_MASK_QP_SIZE,
+ .log_max_qp = LOG_MAX_SUPPORTED_QPS,
+ .num_cmd_caches = 0,
+ },
};
static int wait_fw_init(struct mlx5_core_dev *dev, u32 max_wait_mili,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index be0785f83083..5eaab99678ee 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -142,6 +142,7 @@ enum mlx5_semaphore_space_address {
};
#define MLX5_DEFAULT_PROF 2
+#define MLX5_SF_PROF 3
static inline int mlx5_flexible_inlen(struct mlx5_core_dev *dev, size_t fixed,
size_t item_size, size_t num_items,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
index a7377619ba6f..e2f26d0bc615 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
@@ -28,7 +28,7 @@ static int mlx5_sf_dev_probe(struct auxiliary_device *adev, const struct auxilia
mdev->priv.adev_idx = adev->id;
sf_dev->mdev = mdev;
- err = mlx5_mdev_init(mdev, MLX5_DEFAULT_PROF);
+ err = mlx5_mdev_init(mdev, MLX5_SF_PROF);
if (err) {
mlx5_core_warn(mdev, "mlx5_mdev_init on err=%d\n", err);
goto mdev_err;
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index f243bd10a5e1..135a3c8d8237 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -751,6 +751,7 @@ enum {
struct mlx5_profile {
u64 mask;
u8 log_max_qp;
+ u8 num_cmd_caches;
struct {
int size;
int limit;
--
2.39.2
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