scsi: ufs: Make UPIU trace easier differentiate among CDB, OSF, and TM

Transaction Specific Fields (TSF) in the UPIU package could be CDB
(SCSI/UFS Command Descriptor Block), OSF (Opcode Specific Field), and TM
I/O parameter (Task Management Input/Output Parameter). But, currently, we
take all of these as CDB in the UPIU trace. Thus makes user confuse among
CDB, OSF, and TM message. So fix it with this patch.

Link: https://lore.kernel.org/r/20210105113446.16027-7-huobean@gmail.com
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index ba24b50..50f46f3 100644 (file)
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -554,6 +554,13 @@ enum ufs_trace_str_t {
        UFS_TM_SEND, UFS_TM_COMP, UFS_TM_ERR
 };
 
+/*
+ * Transaction Specific Fields (TSF) type in the UPIU package, this enum is
+ * used in include/trace/events/ufs.h for UFS command trace.
+ */
+enum ufs_trace_tsf_t {
+       UFS_TSF_CDB, UFS_TSF_OSF, UFS_TSF_TM_INPUT, UFS_TSF_TM_OUTPUT
+};
 
 /**
  * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9879b79..53fd59c 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -312,7 +312,8 @@ static void ufshcd_add_cmd_upiu_trace(struct ufs_hba *hba, unsigned int tag,
        if (!trace_ufshcd_upiu_enabled())
                return;
 
-       trace_ufshcd_upiu(dev_name(hba->dev), str_t, &rq->header, &rq->sc.cdb);
+       trace_ufshcd_upiu(dev_name(hba->dev), str_t, &rq->header, &rq->sc.cdb,
+                         UFS_TSF_CDB);
 }
 
 static void ufshcd_add_query_upiu_trace(struct ufs_hba *hba, unsigned int tag,
@@ -329,7 +330,7 @@ static void ufshcd_add_query_upiu_trace(struct ufs_hba *hba, unsigned int tag,
                rq_rsp = (struct utp_upiu_req *)hba->lrb[tag].ucd_rsp_ptr;
 
        trace_ufshcd_upiu(dev_name(hba->dev), str_t, &rq_rsp->header,
-                         &rq_rsp->qr);
+                         &rq_rsp->qr, UFS_TSF_OSF);
 }
 
 static void ufshcd_add_tm_upiu_trace(struct ufs_hba *hba, unsigned int tag,
@@ -343,10 +344,10 @@ static void ufshcd_add_tm_upiu_trace(struct ufs_hba *hba, unsigned int tag,
 
        if (str_t == UFS_TM_SEND)
                trace_ufshcd_upiu(dev_name(hba->dev), str_t, &descp->req_header,
-                                 &descp->input_param1);
+                                 &descp->input_param1, UFS_TSF_TM_INPUT);
        else
                trace_ufshcd_upiu(dev_name(hba->dev), str_t, &descp->rsp_header,
-                                 &descp->output_param1);
+                                 &descp->output_param1, UFS_TSF_TM_OUTPUT);
 }
 
 static void ufshcd_add_uic_command_trace(struct ufs_hba *hba,

diff --git a/include/trace/events/ufs.h b/include/trace/events/ufs.h
index 7613a5c..e151477 100644 (file)
--- a/include/trace/events/ufs.h
+++ b/include/trace/events/ufs.h
@@ -48,6 +48,12 @@
        EM(UFS_TM_COMP,         "tm_complete")                  \
        EMe(UFS_TM_ERR,         "tm_complete_err")
 
+#define UFS_CMD_TRACE_TSF_TYPES                                        \
+       EM(UFS_TSF_CDB,         "CDB")                          \
+       EM(UFS_TSF_OSF,         "OSF")                          \
+       EM(UFS_TSF_TM_INPUT,    "TM_INPUT")                     \
+       EMe(UFS_TSF_TM_OUTPUT,  "TM_OUTPUT")
+
 /* Enums require being exported to userspace, for user tool parsing */
 #undef EM
 #undef EMe
@@ -58,6 +64,7 @@ UFS_LINK_STATES;
 UFS_PWR_MODES;
 UFSCHD_CLK_GATING_STATES;
 UFS_CMD_TRACE_STRINGS
+UFS_CMD_TRACE_TSF_TYPES
 
 /*
  * Now redefine the EM() and EMe() macros to map the enums to the strings
@@ -70,6 +77,8 @@ UFS_CMD_TRACE_STRINGS
 
 #define show_ufs_cmd_trace_str(str_t)  \
                                __print_symbolic(str_t, UFS_CMD_TRACE_STRINGS)
+#define show_ufs_cmd_trace_tsf(tsf)    \
+                               __print_symbolic(tsf, UFS_CMD_TRACE_TSF_TYPES)
 
 TRACE_EVENT(ufshcd_clk_gating,
 
@@ -311,15 +320,16 @@ TRACE_EVENT(ufshcd_uic_command,
 
 TRACE_EVENT(ufshcd_upiu,
        TP_PROTO(const char *dev_name, enum ufs_trace_str_t str_t, void *hdr,
-                void *tsf),
+                void *tsf, enum ufs_trace_tsf_t tsf_t),
 
-       TP_ARGS(dev_name, str_t, hdr, tsf),
+       TP_ARGS(dev_name, str_t, hdr, tsf, tsf_t),
 
        TP_STRUCT__entry(
                __string(dev_name, dev_name)
                __field(enum ufs_trace_str_t, str_t)
                __array(unsigned char, hdr, 12)
                __array(unsigned char, tsf, 16)
+               __field(enum ufs_trace_tsf_t, tsf_t)
        ),
 
        TP_fast_assign(
@@ -327,12 +337,14 @@ TRACE_EVENT(ufshcd_upiu,
                __entry->str_t = str_t;
                memcpy(__entry->hdr, hdr, sizeof(__entry->hdr));
                memcpy(__entry->tsf, tsf, sizeof(__entry->tsf));
+               __entry->tsf_t = tsf_t;
        ),
 
        TP_printk(
-               "%s: %s: HDR:%s, CDB:%s",
+               "%s: %s: HDR:%s, %s:%s",
                show_ufs_cmd_trace_str(__entry->str_t), __get_str(dev_name),
                __print_hex(__entry->hdr, sizeof(__entry->hdr)),
+               show_ufs_cmd_trace_tsf(__entry->tsf_t),
                __print_hex(__entry->tsf, sizeof(__entry->tsf))
        )
 );