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nvmet: add debugfs support

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Add a debugfs hierarchy to display the configured subsystems
and the controllers attached to the subsystems.

Suggested-by: Redouane BOUFENGHOUR <redouane.boufenghour@shadow.tech>
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Hannes Reinecke
2024-05-27 07:15:19 +02:00
committed by Keith Busch
parent d1237b3282
commit 649fd41420
6 changed files with 262 additions and 3 deletions
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8
drivers/nvme/target/nvmet.h
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@@ -230,7 +230,9 @@ struct nvmet_ctrl {
struct device *p2p_client;
struct radix_tree_root p2p_ns_map;
#ifdef CONFIG_NVME_TARGET_DEBUGFS
struct dentry *debugfs_dir;
#endif
spinlock_t error_lock;
u64 err_counter;
struct nvme_error_slot slots[NVMET_ERROR_LOG_SLOTS];
@@ -262,7 +264,9 @@ struct nvmet_subsys {
struct list_head hosts;
bool allow_any_host;
#ifdef CONFIG_NVME_TARGET_DEBUGFS
struct dentry *debugfs_dir;
#endif
u16 max_qid;
u64 ver;