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net: devlink: add unlocked variants of devlink_region_create/destroy() functions

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Add unlocked variants of devlink_region_create/destroy() functions
to be used in drivers called-in with devlink->lock held.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jiri Pirko 2022-07-16 13:02:39 +02:00 committed by Jakub Kicinski
parent 72a4c8c94e
commit eb0e9fa2c6
2 changed files with 67 additions and 29 deletions
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5
include/net/devlink.h
View file

@ -1676,6 +1676,10 @@ int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
union devlink_param_value init_val);
void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
struct devlink_region *devl_region_create(struct devlink *devlink,
const struct devlink_region_ops *ops,
u32 region_max_snapshots,
u64 region_size);
struct devlink_region *
devlink_region_create(struct devlink *devlink,
const struct devlink_region_ops *ops,
@ -1684,6 +1688,7 @@ struct devlink_region *
devlink_port_region_create(struct devlink_port *port,
const struct devlink_port_region_ops *ops,
u32 region_max_snapshots, u64 region_size);
void devl_region_destroy(struct devlink_region *region);
void devlink_region_destroy(struct devlink_region *region);
void devlink_port_region_destroy(struct devlink_region *region);

91
net/core/devlink.c
View file

@ -11192,36 +11192,31 @@ void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
EXPORT_SYMBOL_GPL(devlink_param_value_changed);
/**
* devlink_region_create - create a new address region
* devl_region_create - create a new address region
*
* @devlink: devlink
* @ops: region operations and name
* @region_max_snapshots: Maximum supported number of snapshots for region
* @region_size: size of region
* @devlink: devlink
* @ops: region operations and name
* @region_max_snapshots: Maximum supported number of snapshots for region
* @region_size: size of region
*/
struct devlink_region *
devlink_region_create(struct devlink *devlink,
const struct devlink_region_ops *ops,
u32 region_max_snapshots, u64 region_size)
struct devlink_region *devl_region_create(struct devlink *devlink,
const struct devlink_region_ops *ops,
u32 region_max_snapshots,
u64 region_size)
{
struct devlink_region *region;
int err = 0;
devl_assert_locked(devlink);
if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
return ERR_PTR(-EINVAL);
devl_lock(devlink);
if (devlink_region_get_by_name(devlink, ops->name)) {
err = -EEXIST;
goto unlock;
}
if (devlink_region_get_by_name(devlink, ops->name))
return ERR_PTR(-EEXIST);
region = kzalloc(sizeof(*region), GFP_KERNEL);
if (!region) {
err = -ENOMEM;
goto unlock;
}
if (!region)
return ERR_PTR(-ENOMEM);
region->devlink = devlink;
region->max_snapshots = region_max_snapshots;
@ -11231,12 +11226,32 @@ devlink_region_create(struct devlink *devlink,
list_add_tail(&region->list, &devlink->region_list);
devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
return region;
}
EXPORT_SYMBOL_GPL(devl_region_create);
/**
* devlink_region_create - create a new address region
*
* @devlink: devlink
* @ops: region operations and name
* @region_max_snapshots: Maximum supported number of snapshots for region
* @region_size: size of region
*
* Context: Takes and release devlink->lock <mutex>.
*/
struct devlink_region *
devlink_region_create(struct devlink *devlink,
const struct devlink_region_ops *ops,
u32 region_max_snapshots, u64 region_size)
{
struct devlink_region *region;
devl_lock(devlink);
region = devl_region_create(devlink, ops, region_max_snapshots,
region_size);
devl_unlock(devlink);
return region;
unlock:
devl_unlock(devlink);
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(devlink_region_create);
@ -11247,6 +11262,8 @@ EXPORT_SYMBOL_GPL(devlink_region_create);
* @ops: region operations and name
* @region_max_snapshots: Maximum supported number of snapshots for region
* @region_size: size of region
*
* Context: Takes and release devlink->lock <mutex>.
*/
struct devlink_region *
devlink_port_region_create(struct devlink_port *port,
@ -11292,16 +11309,16 @@ devlink_port_region_create(struct devlink_port *port,
EXPORT_SYMBOL_GPL(devlink_port_region_create);
/**
* devlink_region_destroy - destroy address region
* devl_region_destroy - destroy address region
*
* @region: devlink region to destroy
* @region: devlink region to destroy
*/
void devlink_region_destroy(struct devlink_region *region)
void devl_region_destroy(struct devlink_region *region)
{
struct devlink *devlink = region->devlink;
struct devlink_snapshot *snapshot, *ts;
devl_lock(devlink);
devl_assert_locked(devlink);
/* Free all snapshots of region */
list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
@ -11310,9 +11327,25 @@ void devlink_region_destroy(struct devlink_region *region)
list_del(&region->list);
devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
devl_unlock(devlink);
kfree(region);
}
EXPORT_SYMBOL_GPL(devl_region_destroy);
/**
* devlink_region_destroy - destroy address region
*
* @region: devlink region to destroy
*
* Context: Takes and release devlink->lock <mutex>.
*/
void devlink_region_destroy(struct devlink_region *region)
{
struct devlink *devlink = region->devlink;
devl_lock(devlink);
devl_region_destroy(region);
devl_unlock(devlink);
}
EXPORT_SYMBOL_GPL(devlink_region_destroy);
/**