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authorSunil Mushran <sunil.mushran@oracle.com>2010-12-14 14:14:30 -0800
committerJoel Becker <joel.becker@oracle.com>2010-12-16 00:48:19 -0800
commitcb0586bd4c77c531fe0be4ae860ec642450eeda5 (patch)
treea61a523952b929d9d42e04779fff2912d6821bc5 /fs/ocfs2/cluster
parent58a3158a5d17ddf4894db9e8ccaf92093ff8e42e (diff)
ocfs2/cluster: Show pin state for each o2hb region
This patch adds a per o2hb region debugfs file that shows whether that region is pinned or not. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/cluster')
-rw-r--r--fs/ocfs2/cluster/heartbeat.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index ad2e41d6879d..3722e3850a1f 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -82,6 +82,7 @@ static unsigned long o2hb_failed_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)];
#define O2HB_DB_TYPE_REGION_LIVENODES 4
#define O2HB_DB_TYPE_REGION_NUMBER 5
#define O2HB_DB_TYPE_REGION_ELAPSED_TIME 6
+#define O2HB_DB_TYPE_REGION_PINNED 7
struct o2hb_debug_buf {
int db_type;
int db_size;
@@ -101,6 +102,7 @@ static struct o2hb_debug_buf *o2hb_db_failedregions;
#define O2HB_DEBUG_FAILEDREGIONS "failed_regions"
#define O2HB_DEBUG_REGION_NUMBER "num"
#define O2HB_DEBUG_REGION_ELAPSED_TIME "elapsed_time_in_ms"
+#define O2HB_DEBUG_REGION_PINNED "pinned"
static struct dentry *o2hb_debug_dir;
static struct dentry *o2hb_debug_livenodes;
@@ -241,9 +243,11 @@ struct o2hb_region {
struct dentry *hr_debug_livenodes;
struct dentry *hr_debug_regnum;
struct dentry *hr_debug_elapsed_time;
+ struct dentry *hr_debug_pinned;
struct o2hb_debug_buf *hr_db_livenodes;
struct o2hb_debug_buf *hr_db_regnum;
struct o2hb_debug_buf *hr_db_elapsed_time;
+ struct o2hb_debug_buf *hr_db_pinned;
/* let the person setting up hb wait for it to return until it
* has reached a 'steady' state. This will be fixed when we have
@@ -1180,6 +1184,12 @@ static int o2hb_debug_open(struct inode *inode, struct file *file)
reg->hr_last_timeout_start));
goto done;
+ case O2HB_DB_TYPE_REGION_PINNED:
+ reg = (struct o2hb_region *)db->db_data;
+ out += snprintf(buf + out, PAGE_SIZE - out, "%u\n",
+ !!reg->hr_item_pinned);
+ goto done;
+
default:
goto done;
}
@@ -1424,6 +1434,7 @@ static void o2hb_region_release(struct config_item *item)
debugfs_remove(reg->hr_debug_livenodes);
debugfs_remove(reg->hr_debug_regnum);
debugfs_remove(reg->hr_debug_elapsed_time);
+ debugfs_remove(reg->hr_debug_pinned);
debugfs_remove(reg->hr_debug_dir);
spin_lock(&o2hb_live_lock);
@@ -1988,6 +1999,18 @@ static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
goto bail;
}
+ reg->hr_debug_pinned =
+ o2hb_debug_create(O2HB_DEBUG_REGION_PINNED,
+ reg->hr_debug_dir,
+ &(reg->hr_db_pinned),
+ sizeof(*(reg->hr_db_pinned)),
+ O2HB_DB_TYPE_REGION_PINNED,
+ 0, 0, reg);
+ if (!reg->hr_debug_pinned) {
+ mlog_errno(ret);
+ goto bail;
+ }
+
ret = 0;
bail:
return ret;