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468d677954
android_kernel_samsung_sm8650/fs/cifs
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Steve French 468d677954 smb3: display stats counters for number of slow commands 
When CONFIG_CIFS_STATS2 is enabled keep counters for slow
commands (ie server took longer than 1 second to respond)
by SMB2/SMB3 command code.  This can help in diagnosing
whether performance problems are on server (instead of
client) and which commands are causing the problem.

Sample output (the new lines contain words "slow responses ...")

$ cat /proc/fs/cifs/Stats
Resources in use
CIFS Session: 1
Share (unique mount targets): 2
SMB Request/Response Buffer: 1 Pool size: 5
SMB Small Req/Resp Buffer: 1 Pool size: 30
Total Large 10 Small 490 Allocations
Operations (MIDs): 0

0 session 0 share reconnects
Total vfs operations: 67 maximum at one time: 2
4 slow responses from localhost for command 5
1 slow responses from localhost for command 6
1 slow responses from localhost for command 14
1 slow responses from localhost for command 16

1) \\localhost\test
SMBs: 243
Bytes read: 1024000  Bytes written: 104857600
TreeConnects: 1 total 0 failed
TreeDisconnects: 0 total 0 failed
Creates: 40 total 0 failed
Closes: 39 total 0 failed
...

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2018-08-07 14:30:59 -05:00
..
asn1.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
cache.c cifs: use 64-bit timestamps for fscache 2018-08-07 14:15:41 -05:00
cifs_debug.c smb3: display stats counters for number of slow commands 2018-08-07 14:30:59 -05:00
cifs_debug.h cifs: add server argument to the dump_detail method 2018-05-27 17:56:35 -05:00
cifs_dfs_ref.c CIFS: add build_path_from_dentry_optional_prefix() 2017-03-01 22:26:10 -06:00
cifs_fs_sb.h smb3: fix redundant opens on root 2018-05-27 17:56:35 -05:00
cifs_ioctl.h Enable previous version support 2016-10-13 19:48:11 -05:00
cifs_spnego.c cifs: Create dedicated keyring for spnego operations 2016-05-19 21:56:30 -05:00
cifs_spnego.h [CIFS] Rename three structures to avoid camel case 2011-05-27 04:34:02 +00:00
cifs_unicode.c [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
cifs_unicode.h [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
cifs_uniupr.h cifs: correction of unicode header files 2010-08-20 00:46:42 +00:00
cifsacl.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
cifsacl.h cifs: For SMB2 security informaion query, check for minimum sized security descriptor instead of sizeof FileAllInformation class 2018-06-04 19:19:24 -05:00
cifsencrypt.c cifs: Make sure all data pages are signed correctly 2018-08-07 14:15:41 -05:00
cifsfs.c smb3: snapshot mounts are read-only and make sure info is displayable about the mount 2018-08-07 14:15:56 -05:00
cifsfs.h cifs: update internal module version number for cifs.ko to 2.12 2018-05-27 17:56:35 -05:00
cifsglob.h smb3: display stats counters for number of slow commands 2018-08-07 14:30:59 -05:00
cifspdu.h CIFS: move DFS response parsing out of SMB1 code 2017-03-01 22:26:10 -06:00
cifsproto.h cifs: add compound_send_recv() 2018-08-07 14:23:20 -05:00
cifssmb.c cifs: use timespec64 internally 2018-08-07 14:15:41 -05:00
connect.c smb3: add reconnect tracepoints 2018-08-07 14:20:22 -05:00
dir.c some smb3 fixes for stable, as well as addition of ftrace hooks for cifs.ko, and improvements in compounding and smbdirect (RDMA) 2018-06-04 14:42:46 -07:00
dns_resolve.c cifs: fix composing of mount options for DFS referrals 2013-05-24 13:08:31 -05:00
dns_resolve.h DNS: Separate out CIFS DNS Resolver code 2010-08-05 17:17:51 +00:00
export.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
file.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
fscache.c cifs: use 64-bit timestamps for fscache 2018-08-07 14:15:41 -05:00
fscache.h cifs: use 64-bit timestamps for fscache 2018-08-07 14:15:41 -05:00
inode.c smb3: Do not send SMB3 SET_INFO if nothing changed 2018-08-07 14:30:59 -05:00
ioctl.c [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
Kconfig cifs: simple stats should always be enabled 2018-08-07 14:20:22 -05:00
link.c smb3: don't request leases in symlink creation and query 2018-08-07 14:15:57 -05:00
Makefile smb3: Add ftrace tracepoints for improved SMB3 debugging 2018-05-27 17:56:35 -05:00
misc.c cifs: simple stats should always be enabled 2018-08-07 14:20:22 -05:00
netmisc.c cifs: use timespec64 internally 2018-08-07 14:15:41 -05:00
nterr.c CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
nterr.h CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
ntlmssp.h cifs: dynamic allocation of ntlmssp blob 2016-06-23 23:45:07 -05:00
readdir.c cifs: update calc_size to take a server argument 2018-05-27 17:56:35 -05:00
rfc1002pdu.h [CIFS] whitespace cleanup 2007-06-05 18:30:44 +00:00
sess.c smb2: Enforce sec= mount option 2017-03-02 23:13:37 -06:00
smb1ops.c cifs: simple stats should always be enabled 2018-08-07 14:20:22 -05:00
smb2file.c cifs: Fix stack out-of-bounds in smb{2,3}_create_lease_buf() 2018-07-05 13:48:25 -05:00
smb2glob.h cifs: remove struct smb2_hdr 2018-06-01 09:14:30 -05:00
smb2inode.c smb3: Do not send SMB3 SET_INFO if nothing changed 2018-08-07 14:30:59 -05:00
smb2maperror.c cifs: remove struct smb2_hdr 2018-06-01 09:14:30 -05:00
smb2misc.c smb3: simplify code by removing CONFIG_CIFS_SMB311 2018-08-07 14:15:56 -05:00
smb2ops.c cifs: update init_sg, crypt_message to take an array of rqst 2018-08-07 14:21:18 -05:00
smb2pdu.c cifs: simple stats should always be enabled 2018-08-07 14:20:22 -05:00
smb2pdu.h smb3: add support for statfs for smb3.1.1 posix extensions 2018-08-07 14:15:41 -05:00
smb2proto.h cifs: use a refcount to protect open/closing the cached file handle 2018-08-07 14:20:22 -05:00
smb2status.h CIFS: Add SMB2 status codes 2012-07-24 10:25:13 -05:00
smb2transport.c CIFS: fix uninitialized ptr deref in smb2 signing 2018-08-07 14:30:59 -05:00
smbdirect.c cifs: fix SMB1 breakage 2018-07-05 13:48:24 -05:00
smbdirect.h cifs: fix SMB1 breakage 2018-07-05 13:48:24 -05:00
smbencrypt.c CIFS: refactor crypto shash/sdesc allocation&free 2018-04-01 20:24:39 -05:00
smberr.h cifs: map NT_STATUS_ERROR_WRITE_PROTECTED to -EROFS 2010-08-02 12:40:40 +00:00
smbfsctl.h [SMB3] Send durable handle v2 contexts when use of persistent handles required 2015-11-03 09:26:27 -06:00
trace.c smb3: Add ftrace tracepoints for improved SMB3 debugging 2018-05-27 17:56:35 -05:00
trace.h smb3: add tracepoint for slow responses 2018-08-07 14:28:01 -05:00
transport.c smb3: display stats counters for number of slow commands 2018-08-07 14:30:59 -05:00
winucase.c [CIFS] quiet sparse compile warning 2013-09-08 14:54:24 -05:00
xattr.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00