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devlink: uniformly take the devlink instance lock in the dump loop

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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>
This commit is contained in:
Jakub Kicinski 2023-01-04 20:05:29 -08:00
parent c9666bac53
commit e4d5015bc1
1 changed files with 6 additions and 7 deletions
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13
net/devlink/leftover.c
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@ -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;