From: Jakub Kicinski <kuba@kernel.org>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com,
jacob.e.keller@intel.com, jiri@resnulli.us,
Jakub Kicinski <kuba@kernel.org>, Jiri Pirko <jiri@nvidia.com>
Subject: [PATCH net-next v2 13/15] devlink: uniformly take the devlink instance lock in the dump loop
Date: Wed, 4 Jan 2023 20:05:29 -0800 [thread overview]
Message-ID: <20230105040531.353563-14-kuba@kernel.org> (raw)
In-Reply-To: <20230105040531.353563-1-kuba@kernel.org>
Move the lock taking out of devlink_nl_cmd_region_get_devlink_dumpit().
This way all dumps will take the instance lock in the main iteration
loop directly, making refactoring and reading the code easier.
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
net/devlink/leftover.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index 091f8814185d..4c91143d0792 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -6050,9 +6050,8 @@ static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
struct devlink_region *region;
struct devlink_port *port;
unsigned long port_index;
- int err = 0;
+ int err;
- devl_lock(devlink);
list_for_each_entry(region, &devlink->region_list, list) {
if (*idx < start) {
(*idx)++;
@@ -6064,7 +6063,7 @@ static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
cb->nlh->nlmsg_seq,
NLM_F_MULTI, region);
if (err)
- goto out;
+ return err;
(*idx)++;
}
@@ -6072,12 +6071,10 @@ static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
start);
if (err)
- goto out;
+ return err;
}
-out:
- devl_unlock(devlink);
- return err;
+ return 0;
}
static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
@@ -6090,8 +6087,10 @@ static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
devlink_dump_for_each_instance_get(msg, state, devlink) {
int idx = 0;
+ devl_lock(devlink);
err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
&idx, state->idx);
+ devl_unlock(devlink);
devlink_put(devlink);
if (err) {
state->idx = idx;
--
2.38.1
next prev parent reply other threads:[~2023-01-05 4:06 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-05 4:05 [PATCH net-next v2 00/15] devlink: code split and structured instance walk Jakub Kicinski
2023-01-05 4:05 ` [PATCH net-next v2 01/15] devlink: move code to a dedicated directory Jakub Kicinski
2023-01-05 9:14 ` Jiri Pirko
2023-01-05 4:05 ` [PATCH net-next v2 02/15] devlink: rename devlink_netdevice_event -> devlink_port_netdevice_event Jakub Kicinski
2023-01-05 9:14 ` Jiri Pirko
2023-01-05 4:05 ` [PATCH net-next v2 03/15] devlink: split out core code Jakub Kicinski
2023-01-05 9:16 ` Jiri Pirko
2023-01-05 18:34 ` Jakub Kicinski
2023-01-06 0:13 ` Jacob Keller
2023-01-06 8:57 ` Jiri Pirko
2023-01-05 4:05 ` [PATCH net-next v2 04/15] devlink: split out netlink code Jakub Kicinski
2023-01-05 9:17 ` Jiri Pirko
2023-01-05 4:05 ` [PATCH net-next v2 05/15] netlink: add macro for checking dump ctx size Jakub Kicinski
2023-01-23 14:20 ` Ido Schimmel
2023-01-23 22:18 ` Jakub Kicinski
2023-01-05 4:05 ` [PATCH net-next v2 06/15] devlink: use an explicit structure for dump context Jakub Kicinski
2023-01-05 9:17 ` Jiri Pirko
2023-01-05 4:05 ` [PATCH net-next v2 07/15] devlink: remove start variables from dumps Jakub Kicinski
2023-01-05 9:18 ` Jiri Pirko
2023-01-05 4:05 ` [PATCH net-next v2 08/15] devlink: drop the filter argument from devlinks_xa_find_get Jakub Kicinski
2023-01-05 4:05 ` [PATCH net-next v2 09/15] devlink: health: combine loops in dump Jakub Kicinski
2023-01-05 4:05 ` [PATCH net-next v2 10/15] devlink: restart dump based on devlink instance ids (simple) Jakub Kicinski
2023-01-05 9:22 ` Jiri Pirko
2023-01-05 4:05 ` [PATCH net-next v2 11/15] devlink: restart dump based on devlink instance ids (nested) Jakub Kicinski
2023-01-05 4:05 ` [PATCH net-next v2 12/15] devlink: restart dump based on devlink instance ids (function) Jakub Kicinski
2023-01-05 4:05 ` Jakub Kicinski [this message]
2023-01-05 4:05 ` [PATCH net-next v2 14/15] devlink: add by-instance dump infra Jakub Kicinski
2023-01-05 9:24 ` Jiri Pirko
2023-01-06 0:16 ` Jacob Keller
2023-01-06 8:59 ` Jiri Pirko
2023-01-06 16:57 ` Jacob Keller
2023-01-05 4:05 ` [PATCH net-next v2 15/15] devlink: convert remaining dumps to the by-instance scheme Jakub Kicinski
2023-01-06 6:20 ` [PATCH net-next v2 00/15] devlink: code split and structured instance walk patchwork-bot+netdevbpf
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