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ocfs2/dlm: Create debugfs dirs

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This patch creates the debugfs directories that will hold the
files to be used to dump the dlm state.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Sunil Mushran
2008-03-10 15:16:22 -07:00
committed by Mark Fasheh
parent 29576f8bb5
commit 6325b4a22b
4 changed files with 125 additions and 2 deletions
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50
fs/ocfs2/dlm/dlmdebug.c
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@@ -30,6 +30,7 @@
#include <linux/utsname.h>
#include <linux/sysctl.h>
#include <linux/spinlock.h>
#include <linux/debugfs.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
@@ -37,8 +38,8 @@
#include "dlmapi.h"
#include "dlmcommon.h"
#include "dlmdomain.h"
#include "dlmdebug.h"
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
@@ -266,3 +267,50 @@ const char *dlm_errname(enum dlm_status err)
return dlm_errnames[err];
}
EXPORT_SYMBOL_GPL(dlm_errname);
#ifdef CONFIG_DEBUG_FS
static struct dentry *dlm_debugfs_root = NULL;
#define DLM_DEBUGFS_DIR "o2dlm"
/* subroot - domain dir */
int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
{
dlm->dlm_debugfs_subroot = debugfs_create_dir(dlm->name,
dlm_debugfs_root);
if (!dlm->dlm_debugfs_subroot) {
mlog_errno(-ENOMEM);
goto bail;
}
return 0;
bail:
dlm_destroy_debugfs_subroot(dlm);
return -ENOMEM;
}
void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm)
{
if (dlm->dlm_debugfs_subroot)
debugfs_remove(dlm->dlm_debugfs_subroot);
}
/* debugfs root */
int dlm_create_debugfs_root(void)
{
dlm_debugfs_root = debugfs_create_dir(DLM_DEBUGFS_DIR, NULL);
if (!dlm_debugfs_root) {
mlog_errno(-ENOMEM);
return -ENOMEM;
}
return 0;
}
void dlm_destroy_debugfs_root(void)
{
if (dlm_debugfs_root)
debugfs_remove(dlm_debugfs_root);
}
#endif /* CONFIG_DEBUG_FS */