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authorDavid Teigland <teigland@redhat.com>2008-12-09 14:47:29 -0600
committerDavid Teigland <teigland@redhat.com>2008-12-23 10:18:34 -0600
commite3a84ad495d1fddb542e0922160f0194a1361950 (patch)
treeacc2d0c23440b68b1a9b9b048c2d0fae4735303b /fs/dlm
parenteeda418d8c2646f33f24e9ad33d86c239adc6de7 (diff)
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dlm: add time stamp of blocking callback
Record the time the latest blocking callback was queued for a lock. This will be used for debugging in combination with lock queue timestamp changes in the previous patch. Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm')
-rw-r--r--fs/dlm/dlm_internal.h1
-rw-r--r--fs/dlm/lock.c2
2 files changed, 3 insertions, 0 deletions
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index e69135c83d5..0c488295192 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -245,6 +245,7 @@ struct dlm_lkb {
struct list_head lkb_astqueue; /* need ast to be sent */
struct list_head lkb_ownqueue; /* list of locks for a process */
struct list_head lkb_time_list;
+ ktime_t lkb_time_bast; /* for debugging */
ktime_t lkb_timestamp;
unsigned long lkb_timeout_cs;
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index dfc57ae2704..6cfe65bbf4a 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -318,6 +318,8 @@ static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
static void queue_bast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rqmode)
{
+ lkb->lkb_time_bast = ktime_get();
+
if (is_master_copy(lkb))
send_bast(r, lkb, rqmode);
else