#include <linux/debugfs.h>
#include "dlm_internal.h"
+#include "lock.h"
#define DLM_DEBUG_BUF_LEN 4096
static char debug_buf[DLM_DEBUG_BUF_LEN];
struct rsb_iter {
int entry;
+ int locks;
+ int header;
struct dlm_ls *ls;
struct list_head *next;
struct dlm_rsb *rsb;
}
}
-static void print_lock(struct seq_file *s, struct dlm_lkb *lkb,
- struct dlm_rsb *res)
+static void print_resource_lock(struct seq_file *s, struct dlm_lkb *lkb,
+ struct dlm_rsb *res)
{
seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode));
struct dlm_lkb *lkb;
int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list;
+ lock_rsb(res);
+
seq_printf(s, "\nResource %p Name (len=%d) \"", res, res->res_length);
for (i = 0; i < res->res_length; i++) {
if (isprint(res->res_name[i]))
/* Print the locks attached to this resource */
seq_printf(s, "Granted Queue\n");
list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue)
- print_lock(s, lkb, res);
+ print_resource_lock(s, lkb, res);
seq_printf(s, "Conversion Queue\n");
list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue)
- print_lock(s, lkb, res);
+ print_resource_lock(s, lkb, res);
seq_printf(s, "Waiting Queue\n");
list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue)
- print_lock(s, lkb, res);
+ print_resource_lock(s, lkb, res);
if (list_empty(&res->res_lookup))
goto out;
seq_printf(s, "\n");
}
out:
+ unlock_rsb(res);
+ return 0;
+}
+
+static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb *r)
+{
+ struct dlm_user_args *ua;
+ unsigned int waiting = 0;
+ uint64_t xid = 0;
+
+ if (lkb->lkb_flags & DLM_IFL_USER) {
+ ua = (struct dlm_user_args *) lkb->lkb_astparam;
+ if (ua)
+ xid = ua->xid;
+ }
+
+ if (lkb->lkb_timestamp)
+ waiting = jiffies_to_msecs(jiffies - lkb->lkb_timestamp);
+
+ /* id nodeid remid pid xid exflags flags sts grmode rqmode time_ms
+ r_nodeid r_len r_name */
+
+ seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %u %u %d \"%s\"\n",
+ lkb->lkb_id,
+ lkb->lkb_nodeid,
+ lkb->lkb_remid,
+ lkb->lkb_ownpid,
+ (unsigned long long)xid,
+ lkb->lkb_exflags,
+ lkb->lkb_flags,
+ lkb->lkb_status,
+ lkb->lkb_grmode,
+ lkb->lkb_rqmode,
+ waiting,
+ r->res_nodeid,
+ r->res_length,
+ r->res_name);
+}
+
+static int print_locks(struct dlm_rsb *r, struct seq_file *s)
+{
+ struct dlm_lkb *lkb;
+
+ lock_rsb(r);
+
+ list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue)
+ print_lock(s, lkb, r);
+
+ list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue)
+ print_lock(s, lkb, r);
+
+ list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue)
+ print_lock(s, lkb, r);
+
+ unlock_rsb(r);
return 0;
}
read_lock(&ls->ls_rsbtbl[i].lock);
if (!list_empty(&ls->ls_rsbtbl[i].list)) {
ri->next = ls->ls_rsbtbl[i].list.next;
+ ri->rsb = list_entry(ri->next, struct dlm_rsb,
+ res_hashchain);
+ dlm_hold_rsb(ri->rsb);
read_unlock(&ls->ls_rsbtbl[i].lock);
break;
}
if (ri->entry >= ls->ls_rsbtbl_size)
return 1;
} else {
+ struct dlm_rsb *old = ri->rsb;
i = ri->entry;
read_lock(&ls->ls_rsbtbl[i].lock);
ri->next = ri->next->next;
ri->next = NULL;
ri->entry++;
read_unlock(&ls->ls_rsbtbl[i].lock);
+ dlm_put_rsb(old);
goto top;
}
+ ri->rsb = list_entry(ri->next, struct dlm_rsb, res_hashchain);
+ dlm_hold_rsb(ri->rsb);
read_unlock(&ls->ls_rsbtbl[i].lock);
+ dlm_put_rsb(old);
}
- ri->rsb = list_entry(ri->next, struct dlm_rsb, res_hashchain);
return 0;
}
{
struct rsb_iter *ri;
- ri = kmalloc(sizeof *ri, GFP_KERNEL);
+ ri = kzalloc(sizeof *ri, GFP_KERNEL);
if (!ri)
return NULL;
{
struct rsb_iter *ri = iter_ptr;
- print_resource(ri->rsb, file);
+ if (ri->locks) {
+ if (ri->header) {
+ seq_printf(file, "id nodeid remid pid xid exflags flags "
+ "sts grmode rqmode time_ms r_nodeid "
+ "r_len r_name\n");
+ ri->header = 0;
+ }
+ print_locks(ri->rsb, file);
+ } else {
+ print_resource(ri->rsb, file);
+ }
return 0;
}
return ret;
seq = file->private_data;
- seq->private = inode->u.generic_ip;
+ seq->private = inode->i_private;
return 0;
}
-static struct file_operations rsb_fops = {
+static const struct file_operations rsb_fops = {
.owner = THIS_MODULE,
.open = rsb_open,
.read = seq_read,
};
/*
+ * Dump state in compact per-lock listing
+ */
+
+static struct rsb_iter *locks_iter_init(struct dlm_ls *ls, loff_t *pos)
+{
+ struct rsb_iter *ri;
+
+ ri = kzalloc(sizeof *ri, GFP_KERNEL);
+ if (!ri)
+ return NULL;
+
+ ri->ls = ls;
+ ri->entry = 0;
+ ri->next = NULL;
+ ri->locks = 1;
+
+ if (*pos == 0)
+ ri->header = 1;
+
+ if (rsb_iter_next(ri)) {
+ rsb_iter_free(ri);
+ return NULL;
+ }
+
+ return ri;
+}
+
+static void *locks_seq_start(struct seq_file *file, loff_t *pos)
+{
+ struct rsb_iter *ri;
+ loff_t n = *pos;
+
+ ri = locks_iter_init(file->private, pos);
+ if (!ri)
+ return NULL;
+
+ while (n--) {
+ if (rsb_iter_next(ri)) {
+ rsb_iter_free(ri);
+ return NULL;
+ }
+ }
+
+ return ri;
+}
+
+static struct seq_operations locks_seq_ops = {
+ .start = locks_seq_start,
+ .next = rsb_seq_next,
+ .stop = rsb_seq_stop,
+ .show = rsb_seq_show,
+};
+
+static int locks_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq;
+ int ret;
+
+ ret = seq_open(file, &locks_seq_ops);
+ if (ret)
+ return ret;
+
+ seq = file->private_data;
+ seq->private = inode->i_private;
+
+ return 0;
+}
+
+static const struct file_operations locks_fops = {
+ .owner = THIS_MODULE,
+ .open = locks_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release
+};
+
+/*
* dump lkb's on the ls_waiters list
*/
static int waiters_open(struct inode *inode, struct file *file)
{
- file->private_data = inode->u.generic_ip;
+ file->private_data = inode->i_private;
return 0;
}
return rv;
}
-static struct file_operations waiters_fops = {
+static const struct file_operations waiters_fops = {
.owner = THIS_MODULE,
.open = waiters_open,
.read = waiters_read
return -ENOMEM;
}
+ memset(name, 0, sizeof(name));
+ snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_locks", ls->ls_name);
+
+ ls->ls_debug_locks_dentry = debugfs_create_file(name,
+ S_IFREG | S_IRUGO,
+ dlm_root,
+ ls,
+ &locks_fops);
+ if (!ls->ls_debug_locks_dentry) {
+ debugfs_remove(ls->ls_debug_waiters_dentry);
+ debugfs_remove(ls->ls_debug_rsb_dentry);
+ return -ENOMEM;
+ }
+
return 0;
}
debugfs_remove(ls->ls_debug_rsb_dentry);
if (ls->ls_debug_waiters_dentry)
debugfs_remove(ls->ls_debug_waiters_dentry);
+ if (ls->ls_debug_locks_dentry)
+ debugfs_remove(ls->ls_debug_locks_dentry);
}
int dlm_register_debugfs(void)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff