github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-22 20:54:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

nvmet: add namespace-level debugfs directory

Browse Source 
Add per-namespace debugfs directory support under the subsystem debugfs
directory. Each enabled namespace gets a ns<nsid>/ directory created
during nvmet_ns_enable() and removed during nvmet_ns_disable().

This provides the infrastructure for exposing namespace-specific debug
information in subsequent patches.

Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Guixin Liu 2026-07-07 20:11:13 +08:00 committed by Keith Busch
parent 77c57daf98
commit 8f82aaf16f
4 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/nvme/target/core.c
View File

@ -616,6 +616,7 @@ int nvmet_ns_enable(struct nvmet_ns *ns)
nvmet_ns_changed(subsys, ns->nsid);
ns->enabled = true;
xa_set_mark(&subsys->namespaces, ns->nsid, NVMET_NS_ENABLED);
nvmet_debugfs_ns_setup(ns);
ret = 0;
out_unlock:
mutex_unlock(&subsys->lock);
@ -642,6 +643,7 @@ void nvmet_ns_disable(struct nvmet_ns *ns)
ns->enabled = false;
xa_clear_mark(&subsys->namespaces, ns->nsid, NVMET_NS_ENABLED);
nvmet_debugfs_ns_free(ns);
list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)
pci_dev_put(radix_tree_delete(&ctrl->p2p_ns_map, ns->nsid));

21
drivers/nvme/target/debugfs.c
View File

@ -153,6 +153,27 @@ static int nvmet_ctrl_tls_concat_show(struct seq_file *m, void *p)
NVMET_DEBUGFS_ATTR(nvmet_ctrl_tls_concat);
#endif
void nvmet_debugfs_ns_setup(struct nvmet_ns *ns)
{
char name[16];
struct dentry *parent = ns->subsys->debugfs_dir;
if (!parent)
return;
snprintf(name, sizeof(name), "ns%u", ns->nsid);
ns->debugfs_dir = debugfs_create_dir(name, parent);
if (IS_ERR(ns->debugfs_dir)) {
ns->debugfs_dir = NULL;
return;
}
}
void nvmet_debugfs_ns_free(struct nvmet_ns *ns)
{
debugfs_remove_recursive(ns->debugfs_dir);
ns->debugfs_dir = NULL;
}
int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl)
{
char name[32];

5
drivers/nvme/target/debugfs.h
View File

@ -14,6 +14,8 @@ int nvmet_debugfs_subsys_setup(struct nvmet_subsys *subsys);
void nvmet_debugfs_subsys_free(struct nvmet_subsys *subsys);
int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl);
void nvmet_debugfs_ctrl_free(struct nvmet_ctrl *ctrl);
void nvmet_debugfs_ns_setup(struct nvmet_ns *ns);
void nvmet_debugfs_ns_free(struct nvmet_ns *ns);
int __init nvmet_init_debugfs(void);
void nvmet_exit_debugfs(void);
@ -30,6 +32,9 @@ static inline int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl)
}
static inline void nvmet_debugfs_ctrl_free(struct nvmet_ctrl *ctrl) {}
static inline void nvmet_debugfs_ns_setup(struct nvmet_ns *ns) {}
static inline void nvmet_debugfs_ns_free(struct nvmet_ns *ns) {}
static inline int __init nvmet_init_debugfs(void)
{
return 0;

3
drivers/nvme/target/nvmet.h
View File

@ -128,6 +128,9 @@ struct nvmet_ns {
u8 csi;
struct nvmet_pr pr;
struct xarray pr_per_ctrl_refs;
#ifdef CONFIG_NVME_TARGET_DEBUGFS
struct dentry *debugfs_dir;
#endif
};
static inline struct nvmet_ns *to_nvmet_ns(struct config_item *item)