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Message-Id: <12071674151752-git-send-email-mfasheh@suse.com>
Date: Wed, 2 Apr 2008 13:14:56 -0700
From: Mark Fasheh <mfasheh@...e.com>
To: linux-kernel@...r.kernel.org
Cc: ocfs2-devel@....oracle.com, Joel Becker <joel.becker@...cle.com>,
Sunil Mushran <sunil.mushran@...cle.com>
Subject: [PATCH 46/62] ocfs2/dlm: Move dlm_print_one_mle() from dlmmaster.c to dlmdebug.c
From: Sunil Mushran <sunil.mushran@...cle.com>
This patch helps in consolidating debugging related functions in dlmdebug.c.
Signed-off-by: Sunil Mushran <sunil.mushran@...cle.com>
Signed-off-by: Joel Becker <joel.becker@...cle.com>
Signed-off-by: Mark Fasheh <mfasheh@...e.com>
---
fs/ocfs2/dlm/dlmdebug.c | 154 ++++++++++++++++++++++++---------------------
fs/ocfs2/dlm/dlmdebug.h | 2 +
fs/ocfs2/dlm/dlmmaster.c | 89 +--------------------------
3 files changed, 85 insertions(+), 160 deletions(-)
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index a109005..58e4579 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -268,11 +268,6 @@ const char *dlm_errname(enum dlm_status err)
}
EXPORT_SYMBOL_GPL(dlm_errname);
-
-#ifdef CONFIG_DEBUG_FS
-
-static struct dentry *dlm_debugfs_root = NULL;
-
/* NOTE: This function converts a lockname into a string. It uses knowledge
* of the format of the lockname that should be outside the purview of the dlm.
* We are adding only to make dlm debugging slightly easier.
@@ -299,6 +294,88 @@ static int stringify_lockname(const char *lockname, int locklen,
return out;
}
+static int stringify_nodemap(unsigned long *nodemap, int maxnodes,
+ char *buf, int len)
+{
+ int out = 0;
+ int i = -1;
+
+ while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes)
+ out += snprintf(buf + out, len - out, "%d ", i);
+
+ return out;
+}
+
+static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len)
+{
+ int out = 0;
+ unsigned int namelen;
+ const char *name;
+ char *mle_type;
+
+ if (mle->type != DLM_MLE_MASTER) {
+ namelen = mle->u.name.len;
+ name = mle->u.name.name;
+ } else {
+ namelen = mle->u.res->lockname.len;
+ name = mle->u.res->lockname.name;
+ }
+
+ if (mle->type == DLM_MLE_BLOCK)
+ mle_type = "BLK";
+ else if (mle->type == DLM_MLE_MASTER)
+ mle_type = "MAS";
+ else
+ mle_type = "MIG";
+
+ out += stringify_lockname(name, namelen, buf + out, len - out);
+ out += snprintf(buf + out, len - out,
+ "\t%3s\tmas=%3u\tnew=%3u\tevt=%1d\tuse=%1d\tref=%3d\n",
+ mle_type, mle->master, mle->new_master,
+ !list_empty(&mle->hb_events),
+ !!mle->inuse,
+ atomic_read(&mle->mle_refs.refcount));
+
+ out += snprintf(buf + out, len - out, "Maybe=");
+ out += stringify_nodemap(mle->maybe_map, O2NM_MAX_NODES,
+ buf + out, len - out);
+ out += snprintf(buf + out, len - out, "\n");
+
+ out += snprintf(buf + out, len - out, "Vote=");
+ out += stringify_nodemap(mle->vote_map, O2NM_MAX_NODES,
+ buf + out, len - out);
+ out += snprintf(buf + out, len - out, "\n");
+
+ out += snprintf(buf + out, len - out, "Response=");
+ out += stringify_nodemap(mle->response_map, O2NM_MAX_NODES,
+ buf + out, len - out);
+ out += snprintf(buf + out, len - out, "\n");
+
+ out += snprintf(buf + out, len - out, "Node=");
+ out += stringify_nodemap(mle->node_map, O2NM_MAX_NODES,
+ buf + out, len - out);
+ out += snprintf(buf + out, len - out, "\n");
+
+ out += snprintf(buf + out, len - out, "\n");
+
+ return out;
+}
+
+void dlm_print_one_mle(struct dlm_master_list_entry *mle)
+{
+ char *buf;
+
+ buf = (char *) get_zeroed_page(GFP_NOFS);
+ if (buf) {
+ dump_mle(mle, buf, PAGE_SIZE - 1);
+ free_page((unsigned long)buf);
+ }
+}
+
+#ifdef CONFIG_DEBUG_FS
+
+static struct dentry *dlm_debugfs_root = NULL;
+
#define DLM_DEBUGFS_DIR "o2dlm"
#define DLM_DEBUGFS_DLM_STATE "dlm_state"
#define DLM_DEBUGFS_LOCKING_STATE "locking_state"
@@ -326,18 +403,6 @@ static void dlm_debug_get(struct dlm_debug_ctxt *dc)
kref_get(&dc->debug_refcnt);
}
-static int stringify_nodemap(unsigned long *nodemap, int maxnodes,
- char *buf, int len)
-{
- int out = 0;
- int i = -1;
-
- while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes)
- out += snprintf(buf + out, len - out, "%d ", i);
-
- return out;
-}
-
static struct debug_buffer *debug_buffer_allocate(void)
{
struct debug_buffer *db = NULL;
@@ -455,61 +520,6 @@ static struct file_operations debug_purgelist_fops = {
/* end - purge list funcs */
/* begin - debug mle funcs */
-static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len)
-{
- int out = 0;
- unsigned int namelen;
- const char *name;
- char *mle_type;
-
- if (mle->type != DLM_MLE_MASTER) {
- namelen = mle->u.name.len;
- name = mle->u.name.name;
- } else {
- namelen = mle->u.res->lockname.len;
- name = mle->u.res->lockname.name;
- }
-
- if (mle->type == DLM_MLE_BLOCK)
- mle_type = "BLK";
- else if (mle->type == DLM_MLE_MASTER)
- mle_type = "MAS";
- else
- mle_type = "MIG";
-
- out += stringify_lockname(name, namelen, buf + out, len - out);
- out += snprintf(buf + out, len - out,
- "\t%3s\tmas=%3u\tnew=%3u\tevt=%1d\tuse=%1d\tref=%3d\n",
- mle_type, mle->master, mle->new_master,
- !list_empty(&mle->hb_events),
- !!mle->inuse,
- atomic_read(&mle->mle_refs.refcount));
-
- out += snprintf(buf + out, len - out, "Maybe=");
- out += stringify_nodemap(mle->maybe_map, O2NM_MAX_NODES,
- buf + out, len - out);
- out += snprintf(buf + out, len - out, "\n");
-
- out += snprintf(buf + out, len - out, "Vote=");
- out += stringify_nodemap(mle->vote_map, O2NM_MAX_NODES,
- buf + out, len - out);
- out += snprintf(buf + out, len - out, "\n");
-
- out += snprintf(buf + out, len - out, "Response=");
- out += stringify_nodemap(mle->response_map, O2NM_MAX_NODES,
- buf + out, len - out);
- out += snprintf(buf + out, len - out, "\n");
-
- out += snprintf(buf + out, len - out, "Node=");
- out += stringify_nodemap(mle->node_map, O2NM_MAX_NODES,
- buf + out, len - out);
- out += snprintf(buf + out, len - out, "\n");
-
- out += snprintf(buf + out, len - out, "\n");
-
- return out;
-}
-
static int debug_mle_print(struct dlm_ctxt *dlm, struct debug_buffer *db)
{
struct dlm_master_list_entry *mle;
diff --git a/fs/ocfs2/dlm/dlmdebug.h b/fs/ocfs2/dlm/dlmdebug.h
index 8857743..d34a62a 100644
--- a/fs/ocfs2/dlm/dlmdebug.h
+++ b/fs/ocfs2/dlm/dlmdebug.h
@@ -25,6 +25,8 @@
#ifndef DLMDEBUG_H
#define DLMDEBUG_H
+void dlm_print_one_mle(struct dlm_master_list_entry *mle);
+
#ifdef CONFIG_DEBUG_FS
struct dlm_debug_ctxt {
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 94cadcb..efc015c 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -48,6 +48,7 @@
#include "dlmapi.h"
#include "dlmcommon.h"
#include "dlmdomain.h"
+#include "dlmdebug.h"
#define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_MASTER)
#include "cluster/masklog.h"
@@ -91,94 +92,6 @@ static inline int dlm_mle_equal(struct dlm_ctxt *dlm,
return 1;
}
-#define dlm_print_nodemap(m) _dlm_print_nodemap(m,#m)
-static void _dlm_print_nodemap(unsigned long *map, const char *mapname)
-{
- int i;
- printk("%s=[ ", mapname);
- for (i=0; i<O2NM_MAX_NODES; i++)
- if (test_bit(i, map))
- printk("%d ", i);
- printk("]");
-}
-
-static void dlm_print_one_mle(struct dlm_master_list_entry *mle)
-{
- int refs;
- char *type;
- char attached;
- u8 master;
- unsigned int namelen;
- const char *name;
- struct kref *k;
- unsigned long *maybe = mle->maybe_map,
- *vote = mle->vote_map,
- *resp = mle->response_map,
- *node = mle->node_map;
-
- k = &mle->mle_refs;
- if (mle->type == DLM_MLE_BLOCK)
- type = "BLK";
- else if (mle->type == DLM_MLE_MASTER)
- type = "MAS";
- else
- type = "MIG";
- refs = atomic_read(&k->refcount);
- master = mle->master;
- attached = (list_empty(&mle->hb_events) ? 'N' : 'Y');
-
- if (mle->type != DLM_MLE_MASTER) {
- namelen = mle->u.name.len;
- name = mle->u.name.name;
- } else {
- namelen = mle->u.res->lockname.len;
- name = mle->u.res->lockname.name;
- }
-
- mlog(ML_NOTICE, "%.*s: %3s refs=%3d mas=%3u new=%3u evt=%c inuse=%d ",
- namelen, name, type, refs, master, mle->new_master, attached,
- mle->inuse);
- dlm_print_nodemap(maybe);
- printk(", ");
- dlm_print_nodemap(vote);
- printk(", ");
- dlm_print_nodemap(resp);
- printk(", ");
- dlm_print_nodemap(node);
- printk(", ");
- printk("\n");
-}
-
-#if 0
-/* Code here is included but defined out as it aids debugging */
-
-static void dlm_dump_mles(struct dlm_ctxt *dlm)
-{
- struct dlm_master_list_entry *mle;
-
- mlog(ML_NOTICE, "dumping all mles for domain %s:\n", dlm->name);
- spin_lock(&dlm->master_lock);
- list_for_each_entry(mle, &dlm->master_list, list)
- dlm_print_one_mle(mle);
- spin_unlock(&dlm->master_lock);
-}
-
-int dlm_dump_all_mles(const char __user *data, unsigned int len)
-{
- struct dlm_ctxt *dlm;
-
- spin_lock(&dlm_domain_lock);
- list_for_each_entry(dlm, &dlm_domains, list) {
- mlog(ML_NOTICE, "found dlm: %p, name=%s\n", dlm, dlm->name);
- dlm_dump_mles(dlm);
- }
- spin_unlock(&dlm_domain_lock);
- return len;
-}
-EXPORT_SYMBOL_GPL(dlm_dump_all_mles);
-
-#endif /* 0 */
-
static struct kmem_cache *dlm_lockres_cache = NULL;
static struct kmem_cache *dlm_lockname_cache = NULL;
static struct kmem_cache *dlm_mle_cache = NULL;
--
1.5.4.1
--
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