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net/mlx5e: Reduce number of heap allocated buffers for update stats 

Allocating buffers on the heap every 200ms is something we should avoid,
let's use buffers located on the stack instead.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Cc: kernel-team@fb.com
This commit is contained in:
Gal Pressman 2017-06-05 16:45:45 +03:00 committed by Saeed Mahameed
parent ebc88870da
commit 0883b4f456
1 changed files with 2 additions and 14 deletions
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16
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
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@ -248,14 +248,10 @@ static void mlx5e_update_pport_counters(struct mlx5e_priv *priv)
{
struct mlx5e_pport_stats *pstats = &priv->stats.pport;
struct mlx5_core_dev *mdev = priv->mdev;
u32 in[MLX5_ST_SZ_DW(ppcnt_reg)] = {0};
int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
int prio;
void *out;
u32 *in;
in = kvzalloc(sz, GFP_KERNEL);
if (!in)
return;
MLX5_SET(ppcnt_reg, in, local_port, 1);
@ -288,8 +284,6 @@ static void mlx5e_update_pport_counters(struct mlx5e_priv *priv)
mlx5_core_access_reg(mdev, in, sz, out, sz,
MLX5_REG_PPCNT, 0, 0);
}
kvfree(in);
}
static void mlx5e_update_q_counter(struct mlx5e_priv *priv)
@ -307,22 +301,16 @@ static void mlx5e_update_pcie_counters(struct mlx5e_priv *priv)
{
struct mlx5e_pcie_stats *pcie_stats = &priv->stats.pcie;
struct mlx5_core_dev *mdev = priv->mdev;
u32 in[MLX5_ST_SZ_DW(mpcnt_reg)] = {0};
int sz = MLX5_ST_SZ_BYTES(mpcnt_reg);
void *out;
u32 *in;
if (!MLX5_CAP_MCAM_FEATURE(mdev, pcie_performance_group))
return;
in = kvzalloc(sz, GFP_KERNEL);
if (!in)
return;
out = pcie_stats->pcie_perf_counters;
MLX5_SET(mpcnt_reg, in, grp, MLX5_PCIE_PERFORMANCE_COUNTERS_GROUP);
mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_MPCNT, 0, 0);
kvfree(in);
}
void mlx5e_update_stats(struct mlx5e_priv *priv)