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[CIFS] Add extended stats (STATS2) for total buffer allocations for 

better performance debugging.

Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2005-12-03 13:58:57 -08:00
parent 84afc29b18
commit 4498eed50a
4 changed files with 23 additions and 2 deletions
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4
fs/cifs/cifs_debug.c
View File

@ -219,6 +219,10 @@ cifs_stats_write(struct file *file, const char __user *buffer,
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);

6
fs/cifs/cifsfs.c
View File

@ -954,6 +954,12 @@ init_cifs(void)
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;

8
fs/cifs/cifsglob.h
View File

@ -505,8 +505,12 @@ GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
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 */

7
fs/cifs/misc.c
View File

@ -161,6 +161,9 @@ cifs_buf_get(void)
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 @@ cifs_small_buf_get(void)
/* 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;
}