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Commit 4498eed5 authored by Steve French's avatar Steve French
Browse files

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


better performance debugging.

Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent 84afc29b

fs/cifs/cifs_debug.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -219,6 +219,10 @@ cifs_stats_write(struct file *file, const char __user *buffer, 




        if (c == '1' || c == 'y' || c == 'Y' || c == '0') {

        if (c == '1' || c == 'y' || c == 'Y' || c == '0') {

		read_lock(&GlobalSMBSeslock);

		read_lock(&GlobalSMBSeslock);

#ifdef CONFIG_CIFS_STATS2

		atomic_set(&totBufAllocCount, 0);

		atomic_set(&totSmBufAllocCount, 0);

#endif /* CONFIG_CIFS_STATS2 */

		list_for_each(tmp, &GlobalTreeConnectionList) {

		list_for_each(tmp, &GlobalTreeConnectionList) {

			tcon = list_entry(tmp, struct cifsTconInfo,

			tcon = list_entry(tmp, struct cifsTconInfo,

					cifsConnectionList);

					cifsConnectionList);

fs/cifs/cifsfs.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -954,6 +954,12 @@ init_cifs(void) 
	atomic_set(&tconInfoReconnectCount, 0);

	atomic_set(&tconInfoReconnectCount, 0);





	atomic_set(&bufAllocCount, 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);

	atomic_set(&midCount, 0);

	GlobalCurrentXid = 0;

	GlobalCurrentXid = 0;

	GlobalTotalActiveXid = 0;

	GlobalTotalActiveXid = 0;

fs/cifs/cifsglob.h

+6 −2
Original line number Original line Diff line number Diff line
@@ -505,7 +505,11 @@ GLOBAL_EXTERN atomic_t tcpSesReconnectCount; 
GLOBAL_EXTERN atomic_t tconInfoReconnectCount;

GLOBAL_EXTERN atomic_t tconInfoReconnectCount;





/* Various Debug counters to remove someday (BB) */

/* Various Debug counters to remove someday (BB) */

GLOBAL_EXTERN atomic_t bufAllocCount;

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 smBufAllocCount;

GLOBAL_EXTERN atomic_t midCount;

GLOBAL_EXTERN atomic_t midCount;

fs/cifs/misc.c

+7 −0
Original line number Original line Diff line number Diff line
@@ -161,6 +161,9 @@ cifs_buf_get(void) 
	if (ret_buf) {

	if (ret_buf) {

		memset(ret_buf, 0, sizeof(struct smb_hdr) + 3);

		memset(ret_buf, 0, sizeof(struct smb_hdr) + 3);

		atomic_inc(&bufAllocCount);

		atomic_inc(&bufAllocCount);

#ifdef CONFIG_CIFS_STATS2

		atomic_inc(&totBufAllocCount);

#endif /* CONFIG_CIFS_STATS2 */

	}

	}





	return ret_buf;

	return ret_buf;
@@ -195,6 +198,10 @@ cifs_small_buf_get(void) 
	/* No need to clear memory here, cleared in header assemble */

	/* No need to clear memory here, cleared in header assemble */

	/*	memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/

	/*	memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/

		atomic_inc(&smBufAllocCount);

		atomic_inc(&smBufAllocCount);

#ifdef CONFIG_CIFS_STATS2

		atomic_inc(&totSmBufAllocCount);

#endif /* CONFIG_CIFS_STATS2 */



	}

	}

	return ret_buf;

	return ret_buf;

}

}