[CIFS] Add extended stats (STATS2) for total buffer allocations for
better performance debugging.
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 22a444a..7f19f254 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -219,6 +219,10 @@
if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
read_lock(&GlobalSMBSeslock);
+#ifdef CONFIG_CIFS_STATS2
+ atomic_set(&totBufAllocCount, 0);
+ atomic_set(&totSmBufAllocCount, 0);
+#endif /* CONFIG_CIFS_STATS2 */
list_for_each(tmp, &GlobalTreeConnectionList) {
tcon = list_entry(tmp, struct cifsTconInfo,
cifsConnectionList);
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 2a13a2b..ba90903 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -954,6 +954,12 @@
atomic_set(&tconInfoReconnectCount, 0);
atomic_set(&bufAllocCount, 0);
+ atomic_set(&smBufAllocCount, 0);
+#ifdef CONFIG_CIFS_STATS2
+ atomic_set(&totBufAllocCount, 0);
+ atomic_set(&totSmBufAllocCount, 0);
+#endif /* CONFIG_CIFS_STATS2 */
+
atomic_set(&midCount, 0);
GlobalCurrentXid = 0;
GlobalTotalActiveXid = 0;
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 1ba08f8..c011c27 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -505,8 +505,12 @@
GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
/* Various Debug counters to remove someday (BB) */
-GLOBAL_EXTERN atomic_t bufAllocCount;
-GLOBAL_EXTERN atomic_t smBufAllocCount;
+GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
+#ifdef CONFIG_CIFS_STATS2
+GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
+GLOBAL_EXTERN atomic_t totSmBufAllocCount;
+#endif
+GLOBAL_EXTERN atomic_t smBufAllocCount;
GLOBAL_EXTERN atomic_t midCount;
/* Misc globals */
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 9af37f8..ac5a72a 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -161,6 +161,9 @@
if (ret_buf) {
memset(ret_buf, 0, sizeof(struct smb_hdr) + 3);
atomic_inc(&bufAllocCount);
+#ifdef CONFIG_CIFS_STATS2
+ atomic_inc(&totBufAllocCount);
+#endif /* CONFIG_CIFS_STATS2 */
}
return ret_buf;
@@ -195,6 +198,10 @@
/* No need to clear memory here, cleared in header assemble */
/* memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/
atomic_inc(&smBufAllocCount);
+#ifdef CONFIG_CIFS_STATS2
+ atomic_inc(&totSmBufAllocCount);
+#endif /* CONFIG_CIFS_STATS2 */
+
}
return ret_buf;
}