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Date: Sat, 7 Jan 2023 11:11:46 +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 v2 5/9] devlink: remove reporter reference counting
From: Jiri Pirko <jiri@...dia.com>
As long as the reporter live time is protected by devlink instance
lock, the reference counting is no longer needed. Remove it.
Signed-off-by: Jiri Pirko <jiri@...dia.com>
---
net/devlink/leftover.c | 113 +++++++++++------------------------------
1 file changed, 30 insertions(+), 83 deletions(-)
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index 70b8a9f15ac3..c512ddb6bd5e 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -7266,7 +7266,6 @@ struct devlink_health_reporter {
u64 error_count;
u64 recovery_count;
u64 last_recovery_ts;
- refcount_t refcount;
};
void *
@@ -7325,7 +7324,6 @@ __devlink_health_reporter_create(struct devlink *devlink,
reporter->auto_recover = !!ops->recover;
reporter->auto_dump = !!ops->dump;
mutex_init(&reporter->dump_lock);
- refcount_set(&reporter->refcount, 1);
return reporter;
}
@@ -7416,13 +7414,6 @@ devlink_health_reporter_free(struct devlink_health_reporter *reporter)
kfree(reporter);
}
-static void
-devlink_health_reporter_put(struct devlink_health_reporter *reporter)
-{
- if (refcount_dec_and_test(&reporter->refcount))
- devlink_health_reporter_free(reporter);
-}
-
/**
* devl_health_reporter_destroy - destroy devlink health reporter
*
@@ -7434,7 +7425,7 @@ devl_health_reporter_destroy(struct devlink_health_reporter *reporter)
devl_assert_locked(reporter->devlink);
list_del(&reporter->list);
- devlink_health_reporter_put(reporter);
+ devlink_health_reporter_free(reporter);
}
EXPORT_SYMBOL_GPL(devl_health_reporter_destroy);
@@ -7678,7 +7669,6 @@ static struct devlink_health_reporter *
devlink_health_reporter_get_from_attrs(struct devlink *devlink,
struct nlattr **attrs)
{
- struct devlink_health_reporter *reporter;
struct devlink_port *devlink_port;
char *reporter_name;
@@ -7687,17 +7677,12 @@ devlink_health_reporter_get_from_attrs(struct devlink *devlink,
reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
devlink_port = devlink_port_get_from_attrs(devlink, attrs);
- if (IS_ERR(devlink_port)) {
- reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
- if (reporter)
- refcount_inc(&reporter->refcount);
- } else {
- reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
- if (reporter)
- refcount_inc(&reporter->refcount);
- }
-
- return reporter;
+ if (IS_ERR(devlink_port))
+ return devlink_health_reporter_find_by_name(devlink,
+ reporter_name);
+ else
+ return devlink_port_health_reporter_find_by_name(devlink_port,
+ reporter_name);
}
static struct devlink_health_reporter *
@@ -7756,10 +7741,8 @@ static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
err = devlink_nl_health_reporter_fill(msg, reporter,
DEVLINK_CMD_HEALTH_REPORTER_GET,
@@ -7767,13 +7750,10 @@ static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
0);
if (err) {
nlmsg_free(msg);
- goto out;
+ return err;
}
- err = genlmsg_reply(msg, info);
-out:
- devlink_health_reporter_put(reporter);
- return err;
+ return genlmsg_reply(msg, info);
}
static int
@@ -7847,7 +7827,6 @@ devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_health_reporter *reporter;
- int err;
reporter = devlink_health_reporter_get_from_info(devlink, info);
if (!reporter)
@@ -7855,15 +7834,12 @@ devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
if (!reporter->ops->recover &&
(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
- info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]))
+ return -EOPNOTSUPP;
+
if (!reporter->ops->dump &&
- info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
+ return -EOPNOTSUPP;
if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
reporter->graceful_period =
@@ -7877,11 +7853,7 @@ devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
reporter->auto_dump =
nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
- devlink_health_reporter_put(reporter);
return 0;
-out:
- devlink_health_reporter_put(reporter);
- return err;
}
static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
@@ -7889,16 +7861,12 @@ static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_health_reporter *reporter;
- int err;
reporter = devlink_health_reporter_get_from_info(devlink, info);
if (!reporter)
return -EINVAL;
- err = devlink_health_reporter_recover(reporter, NULL, info->extack);
-
- devlink_health_reporter_put(reporter);
- return err;
+ return devlink_health_reporter_recover(reporter, NULL, info->extack);
}
static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
@@ -7913,36 +7881,27 @@ static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
if (!reporter)
return -EINVAL;
- if (!reporter->ops->diagnose) {
- devlink_health_reporter_put(reporter);
+ if (!reporter->ops->diagnose)
return -EOPNOTSUPP;
- }
fmsg = devlink_fmsg_alloc();
- if (!fmsg) {
- devlink_health_reporter_put(reporter);
+ if (!fmsg)
return -ENOMEM;
- }
err = devlink_fmsg_obj_nest_start(fmsg);
if (err)
- goto out;
+ return err;
err = reporter->ops->diagnose(reporter, fmsg, info->extack);
if (err)
- goto out;
+ return err;
err = devlink_fmsg_obj_nest_end(fmsg);
if (err)
- goto out;
-
- err = devlink_fmsg_snd(fmsg, info,
- DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
+ return err;
-out:
- devlink_fmsg_free(fmsg);
- devlink_health_reporter_put(reporter);
- return err;
+ return devlink_fmsg_snd(fmsg, info,
+ DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
}
static int
@@ -7957,10 +7916,9 @@ devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
if (!reporter)
return -EINVAL;
- if (!reporter->ops->dump) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!reporter->ops->dump)
+ return -EOPNOTSUPP;
+
mutex_lock(&reporter->dump_lock);
if (!state->idx) {
err = devlink_health_do_dump(reporter, NULL, cb->extack);
@@ -7978,8 +7936,6 @@ devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
unlock:
mutex_unlock(&reporter->dump_lock);
-out:
- devlink_health_reporter_put(reporter);
return err;
}
@@ -7994,15 +7950,12 @@ devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
if (!reporter)
return -EINVAL;
- if (!reporter->ops->dump) {
- devlink_health_reporter_put(reporter);
+ if (!reporter->ops->dump)
return -EOPNOTSUPP;
- }
mutex_lock(&reporter->dump_lock);
devlink_health_dump_clear(reporter);
mutex_unlock(&reporter->dump_lock);
- devlink_health_reporter_put(reporter);
return 0;
}
@@ -8011,21 +7964,15 @@ static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_health_reporter *reporter;
- int err;
reporter = devlink_health_reporter_get_from_info(devlink, info);
if (!reporter)
return -EINVAL;
- if (!reporter->ops->test) {
- devlink_health_reporter_put(reporter);
+ if (!reporter->ops->test)
return -EOPNOTSUPP;
- }
-
- err = reporter->ops->test(reporter, info->extack);
- devlink_health_reporter_put(reporter);
- return err;
+ return reporter->ops->test(reporter, info->extack);
}
struct devlink_stats {
--
2.39.0
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