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drbd: debugfs: add basic hierarchy

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Add new debugfs hierarchy /sys/kernel/debug/
  drbd/
    resources/
      $resource_name/connections/peer/$volume_number/
      $resource_name/volumes/$volume_number/
    minors/$minor_number -> ../resources/$resource_name/volumes/$volume_number/

Followup commits will populate this hierarchy with files containing
statistics, diagnostic information and some attribute data.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Lars Ellenberg
2014-05-02 13:19:51 +02:00
committed by Philipp Reisner
parent 4ce4926683
commit 4d3d5aa83a
5 changed files with 278 additions and 5 deletions
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39
drivers/block/drbd/drbd_debugfs.h Normal file
View File

@@ -0,0 +1,39 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/debugfs.h>
#include "drbd_int.h"
#ifdef CONFIG_DEBUG_FS
int __init drbd_debugfs_init(void);
void drbd_debugfs_cleanup(void);
void drbd_debugfs_resource_add(struct drbd_resource *resource);
void drbd_debugfs_resource_cleanup(struct drbd_resource *resource);
void drbd_debugfs_connection_add(struct drbd_connection *connection);
void drbd_debugfs_connection_cleanup(struct drbd_connection *connection);
void drbd_debugfs_device_add(struct drbd_device *device);
void drbd_debugfs_device_cleanup(struct drbd_device *device);
void drbd_debugfs_peer_device_add(struct drbd_peer_device *peer_device);
void drbd_debugfs_peer_device_cleanup(struct drbd_peer_device *peer_device);
#else
static inline int __init drbd_debugfs_init(void) { return -ENODEV; }
static inline void drbd_debugfs_cleanup(void) { }
static inline void drbd_debugfs_resource_add(struct drbd_resource *resource) { }
static inline void drbd_debugfs_resource_cleanup(struct drbd_resource *resource) { }
static inline void drbd_debugfs_connection_add(struct drbd_connection *connection) { }
static inline void drbd_debugfs_connection_cleanup(struct drbd_connection *connection) { }
static inline void drbd_debugfs_device_add(struct drbd_device *device) { }
static inline void drbd_debugfs_device_cleanup(struct drbd_device *device) { }
static inline void drbd_debugfs_peer_device_add(struct drbd_peer_device *peer_device) { }
static inline void drbd_debugfs_peer_device_cleanup(struct drbd_peer_device *peer_device) { }
#endif