diff options
| author | Steve French <stfrench@microsoft.com> | 2020-10-19 18:18:15 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2020-10-20 11:50:42 -0500 |
| commit | 9eec21bfbe9096141f15c624d3d0c2142121f6cb (patch) | |
| tree | ccff1a0a2a1dd876da6220d5395d13116a31f517 /fs/cifs/smb2ops.c | |
| parent | acf96fef46f271642b90aa658ba49e33ae34ddf0 (diff) | |
smb3: add dynamic trace point to trace when credits obtained
SMB3 crediting is used for flow control, and it can be useful to
trace for problem determination how many credits were acquired
and for which operation.
Here is an example ("trace-cmd record -e *add_credits"):
cifsd-9522 [010] .... 5995.202712: smb3_add_credits:
server=localhost current_mid=0x12 credits=373 credits_to_add=10
cifsd-9522 [010] .... 5995.204040: smb3_add_credits:
server=localhost current_mid=0x15 credits=400 credits_to_add=30
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2ops.c')
| -rw-r--r-- | fs/cifs/smb2ops.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 0dfa832a3de0..f085fe32c342 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -72,7 +72,7 @@ smb2_add_credits(struct TCP_Server_Info *server, /* eg found case where write overlapping reconnect messed up credits */ if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0)) trace_smb3_reconnect_with_invalid_credits(server->CurrentMid, - server->hostname, *val); + server->hostname, *val, add); if ((instance == 0) || (instance == server->reconnect_instance)) *val += add; else @@ -121,6 +121,8 @@ smb2_add_credits(struct TCP_Server_Info *server, cifs_dbg(FYI, "disabling oplocks\n"); break; default: + trace_smb3_add_credits(server->CurrentMid, + server->hostname, rc, add); cifs_dbg(FYI, "add %u credits total=%d\n", add, rc); } } |