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Message-Id: <20230111090748.751505-3-jiri@resnulli.us>
Date: Wed, 11 Jan 2023 10:07:40 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
edumazet@...gle.com, michael.chan@...adcom.com,
yisen.zhuang@...wei.com, salil.mehta@...wei.com,
jesse.brandeburg@...el.com, anthony.l.nguyen@...el.com,
tariqt@...dia.com, saeedm@...dia.com, leon@...nel.org,
idosch@...dia.com, petrm@...dia.com, mailhol.vincent@...adoo.fr,
jacob.e.keller@...el.com, gal@...dia.com
Subject: [patch net-next v4 02/10] devlink: remove linecard reference counting
From: Jiri Pirko <jiri@...dia.com>
As long as the linecard life time is protected by devlink instance
lock, the reference counting is no longer needed. Remove it.
Signed-off-by: Jiri Pirko <jiri@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
---
v2->v3:
- removed devlink_linecard_put() prototype from devl_internal.h
- fixed typo in patch description
---
net/devlink/devl_internal.h | 1 -
net/devlink/leftover.c | 14 ++------------
net/devlink/netlink.c | 5 -----
3 files changed, 2 insertions(+), 18 deletions(-)
diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h
index a466bb114186..d5bc46984039 100644
--- a/net/devlink/devl_internal.h
+++ b/net/devlink/devl_internal.h
@@ -192,7 +192,6 @@ struct devlink_linecard;
struct devlink_linecard *
devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info);
-void devlink_linecard_put(struct devlink_linecard *linecard);
/* Rates */
extern const struct devlink_gen_cmd devl_gen_rate_get;
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index aec397e717f6..46f5575802ef 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -37,7 +37,6 @@ struct devlink_linecard {
struct list_head list;
struct devlink *devlink;
unsigned int index;
- refcount_t refcount;
const struct devlink_linecard_ops *ops;
void *priv;
enum devlink_linecard_state state;
@@ -285,7 +284,6 @@ devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
linecard = devlink_linecard_get_by_index(devlink, linecard_index);
if (!linecard)
return ERR_PTR(-ENODEV);
- refcount_inc(&linecard->refcount);
return linecard;
}
return ERR_PTR(-EINVAL);
@@ -297,14 +295,6 @@ devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info)
return devlink_linecard_get_from_attrs(devlink, info->attrs);
}
-void devlink_linecard_put(struct devlink_linecard *linecard)
-{
- if (refcount_dec_and_test(&linecard->refcount)) {
- mutex_destroy(&linecard->state_lock);
- kfree(linecard);
- }
-}
-
struct devlink_sb {
struct list_head list;
unsigned int index;
@@ -10271,7 +10261,6 @@ devl_linecard_create(struct devlink *devlink, unsigned int linecard_index,
}
list_add_tail(&linecard->list, &devlink->linecard_list);
- refcount_set(&linecard->refcount, 1);
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
return linecard;
}
@@ -10287,7 +10276,8 @@ void devl_linecard_destroy(struct devlink_linecard *linecard)
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL);
list_del(&linecard->list);
devlink_linecard_types_fini(linecard);
- devlink_linecard_put(linecard);
+ mutex_destroy(&linecard->state_lock);
+ kfree(linecard);
}
EXPORT_SYMBOL_GPL(devl_linecard_destroy);
diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c
index b5b8ac6db2d1..3f2ab4360f11 100644
--- a/net/devlink/netlink.c
+++ b/net/devlink/netlink.c
@@ -170,14 +170,9 @@ static int devlink_nl_pre_doit(const struct genl_split_ops *ops,
static void devlink_nl_post_doit(const struct genl_split_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
- struct devlink_linecard *linecard;
struct devlink *devlink;
devlink = info->user_ptr[0];
- if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
- linecard = info->user_ptr[1];
- devlink_linecard_put(linecard);
- }
devl_unlock(devlink);
devlink_put(devlink);
}
--
2.39.0
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