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Commit 53a3e0d9 authored by Steve French's avatar Steve French
Browse files

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: default avatarSteve French <stfrench@microsoft.com>
Reviewed-by: default avatarPavel Shilovsky <pshilov@microsoft.com>
parent efe2e9f3

fs/cifs/smb2transport.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

}

fs/cifs/trace.h

+1 −0
Original line number Diff line number Diff line
@@ -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);