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Date: Sun, 24 Oct 2021 21:17:51 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: jiri@...dia.com, idosch@...dia.com, davem@...emloft.net,
kuba@...nel.org
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] mlxsw: spectrum: Use 'bitmap_zalloc()' when applicable
Use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid
some open-coded arithmetic in allocator arguments.
Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
consistency.
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
.../ethernet/mellanox/mlxsw/spectrum_acl_atcam.c | 8 +++-----
.../ethernet/mellanox/mlxsw/spectrum_acl_tcam.c | 15 ++++++---------
.../net/ethernet/mellanox/mlxsw/spectrum_cnt.c | 9 +++------
.../ethernet/mellanox/mlxsw/spectrum_switchdev.c | 11 ++++-------
4 files changed, 16 insertions(+), 27 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_atcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_atcam.c
index ded4cf658680..4b713832fdd5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_atcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_atcam.c
@@ -119,7 +119,6 @@ mlxsw_sp_acl_atcam_region_12kb_init(struct mlxsw_sp_acl_atcam_region *aregion)
{
struct mlxsw_sp *mlxsw_sp = aregion->region->mlxsw_sp;
struct mlxsw_sp_acl_atcam_region_12kb *region_12kb;
- size_t alloc_size;
u64 max_lkey_id;
int err;
@@ -131,8 +130,7 @@ mlxsw_sp_acl_atcam_region_12kb_init(struct mlxsw_sp_acl_atcam_region *aregion)
if (!region_12kb)
return -ENOMEM;
- alloc_size = BITS_TO_LONGS(max_lkey_id) * sizeof(unsigned long);
- region_12kb->used_lkey_id = kzalloc(alloc_size, GFP_KERNEL);
+ region_12kb->used_lkey_id = bitmap_zalloc(max_lkey_id, GFP_KERNEL);
if (!region_12kb->used_lkey_id) {
err = -ENOMEM;
goto err_used_lkey_id_alloc;
@@ -149,7 +147,7 @@ mlxsw_sp_acl_atcam_region_12kb_init(struct mlxsw_sp_acl_atcam_region *aregion)
return 0;
err_rhashtable_init:
- kfree(region_12kb->used_lkey_id);
+ bitmap_free(region_12kb->used_lkey_id);
err_used_lkey_id_alloc:
kfree(region_12kb);
return err;
@@ -161,7 +159,7 @@ mlxsw_sp_acl_atcam_region_12kb_fini(struct mlxsw_sp_acl_atcam_region *aregion)
struct mlxsw_sp_acl_atcam_region_12kb *region_12kb = aregion->priv;
rhashtable_destroy(®ion_12kb->lkey_ht);
- kfree(region_12kb->used_lkey_id);
+ bitmap_free(region_12kb->used_lkey_id);
kfree(region_12kb);
}
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
index 7cccc41dd69c..31f7f4c3acc3 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -36,7 +36,6 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
u64 max_tcam_regions;
u64 max_regions;
u64 max_groups;
- size_t alloc_size;
int err;
mutex_init(&tcam->lock);
@@ -52,15 +51,13 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
if (max_tcam_regions < max_regions)
max_regions = max_tcam_regions;
- alloc_size = sizeof(tcam->used_regions[0]) * BITS_TO_LONGS(max_regions);
- tcam->used_regions = kzalloc(alloc_size, GFP_KERNEL);
+ tcam->used_regions = bitmap_zalloc(max_regions, GFP_KERNEL);
if (!tcam->used_regions)
return -ENOMEM;
tcam->max_regions = max_regions;
max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
- alloc_size = sizeof(tcam->used_groups[0]) * BITS_TO_LONGS(max_groups);
- tcam->used_groups = kzalloc(alloc_size, GFP_KERNEL);
+ tcam->used_groups = bitmap_zalloc(max_groups, GFP_KERNEL);
if (!tcam->used_groups) {
err = -ENOMEM;
goto err_alloc_used_groups;
@@ -76,9 +73,9 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
return 0;
err_tcam_init:
- kfree(tcam->used_groups);
+ bitmap_free(tcam->used_groups);
err_alloc_used_groups:
- kfree(tcam->used_regions);
+ bitmap_free(tcam->used_regions);
return err;
}
@@ -89,8 +86,8 @@ void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
mutex_destroy(&tcam->lock);
ops->fini(mlxsw_sp, tcam->priv);
- kfree(tcam->used_groups);
- kfree(tcam->used_regions);
+ bitmap_free(tcam->used_groups);
+ bitmap_free(tcam->used_regions);
}
int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c
index b65b93a2b9bc..fc2257753b9b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c
@@ -122,7 +122,6 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp)
unsigned int sub_pools_count = ARRAY_SIZE(mlxsw_sp_counter_sub_pools);
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
struct mlxsw_sp_counter_pool *pool;
- unsigned int map_size;
int err;
pool = kzalloc(struct_size(pool, sub_pools, sub_pools_count),
@@ -143,9 +142,7 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp)
devlink_resource_occ_get_register(devlink, MLXSW_SP_RESOURCE_COUNTERS,
mlxsw_sp_counter_pool_occ_get, pool);
- map_size = BITS_TO_LONGS(pool->pool_size) * sizeof(unsigned long);
-
- pool->usage = kzalloc(map_size, GFP_KERNEL);
+ pool->usage = bitmap_zalloc(pool->pool_size, GFP_KERNEL);
if (!pool->usage) {
err = -ENOMEM;
goto err_usage_alloc;
@@ -158,7 +155,7 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp)
return 0;
err_sub_pools_init:
- kfree(pool->usage);
+ bitmap_free(pool->usage);
err_usage_alloc:
devlink_resource_occ_get_unregister(devlink,
MLXSW_SP_RESOURCE_COUNTERS);
@@ -176,7 +173,7 @@ void mlxsw_sp_counter_pool_fini(struct mlxsw_sp *mlxsw_sp)
WARN_ON(find_first_bit(pool->usage, pool->pool_size) !=
pool->pool_size);
WARN_ON(atomic_read(&pool->active_entries_count));
- kfree(pool->usage);
+ bitmap_free(pool->usage);
devlink_resource_occ_get_unregister(devlink,
MLXSW_SP_RESOURCE_COUNTERS);
kfree(pool);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 22fede5cb32c..81c7e8a7fcf5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1635,16 +1635,13 @@ mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
u16 fid)
{
struct mlxsw_sp_mid *mid;
- size_t alloc_size;
mid = kzalloc(sizeof(*mid), GFP_KERNEL);
if (!mid)
return NULL;
- alloc_size = sizeof(unsigned long) *
- BITS_TO_LONGS(mlxsw_core_max_ports(mlxsw_sp->core));
-
- mid->ports_in_mid = kzalloc(alloc_size, GFP_KERNEL);
+ mid->ports_in_mid = bitmap_zalloc(mlxsw_core_max_ports(mlxsw_sp->core),
+ GFP_KERNEL);
if (!mid->ports_in_mid)
goto err_ports_in_mid_alloc;
@@ -1663,7 +1660,7 @@ mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
return mid;
err_write_mdb_entry:
- kfree(mid->ports_in_mid);
+ bitmap_free(mid->ports_in_mid);
err_ports_in_mid_alloc:
kfree(mid);
return NULL;
@@ -1680,7 +1677,7 @@ static int mlxsw_sp_port_remove_from_mid(struct mlxsw_sp_port *mlxsw_sp_port,
mlxsw_core_max_ports(mlxsw_sp->core))) {
err = mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid);
list_del(&mid->list);
- kfree(mid->ports_in_mid);
+ bitmap_free(mid->ports_in_mid);
kfree(mid);
}
return err;
--
2.30.2
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