From 53a3e0d96c708bca1607507ab2470a3c911c8c81 Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 26 Feb 2019 21:26:20 -0600 Subject: [PATCH] smb3: add dynamic trace point for smb3_cmd_enter Add tracepoint before sending an SMB3 command on the wire (ie add an smb3_cmd_enter tracepoint). This allows us to look in much more detail at response times (between request and response). Signed-off-by: Steve French Reviewed-by: Pavel Shilovsky --- fs/cifs/smb2transport.c | 3 +++ fs/cifs/trace.h | 1 + 2 files changed, 4 insertions(+) diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c index 63264db..fa1fec2 100644 --- a/fs/cifs/smb2transport.c +++ b/fs/cifs/smb2transport.c @@ -602,6 +602,8 @@ smb2_mid_entry_alloc(const struct smb2_sync_hdr *shdr, atomic_inc(&midCount); temp->mid_state = MID_REQUEST_ALLOCATED; + trace_smb3_cmd_enter(shdr->TreeId, shdr->SessionId, + le16_to_cpu(shdr->Command), temp->mid); return temp; } @@ -636,6 +638,7 @@ smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_sync_hdr *shdr, spin_lock(&GlobalMid_Lock); list_add_tail(&(*mid)->qhead, &ses->server->pending_mid_q); spin_unlock(&GlobalMid_Lock); + return 0; } diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h index b6352b6..2a0be3e 100644 --- a/fs/cifs/trace.h +++ b/fs/cifs/trace.h @@ -275,6 +275,7 @@ DEFINE_EVENT(smb3_cmd_done_class, smb3_##name, \ __u64 mid), \ TP_ARGS(tid, sesid, cmd, mid)) +DEFINE_SMB3_CMD_DONE_EVENT(cmd_enter); DEFINE_SMB3_CMD_DONE_EVENT(cmd_done); DEFINE_SMB3_CMD_DONE_EVENT(ses_expired); -- 2.7.4