[SCSI] add scsi trace core functions and put trace points

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
Signed-off-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 92a8c50..1c7ac49 100644 (file)
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -162,6 +162,7 @@ scsi_mod-y                  += scsi_scan.o scsi_sysfs.o scsi_devinfo.o
 scsi_mod-$(CONFIG_SCSI_NETLINK)        += scsi_netlink.o
 scsi_mod-$(CONFIG_SYSCTL)      += scsi_sysctl.o
 scsi_mod-$(CONFIG_SCSI_PROC_FS)        += scsi_proc.o
+scsi_mod-y                     += scsi_trace.o
 
 scsi_tgt-y                     += scsi_tgt_lib.o scsi_tgt_if.o
 

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 1c08f61..ad0ed21 100644 (file)
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -67,6 +67,9 @@
 #include "scsi_priv.h"
 #include "scsi_logging.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/scsi.h>
+
 static void scsi_done(struct scsi_cmnd *cmd);
 
 /*
@@ -747,10 +750,12 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
                cmd->result = (DID_NO_CONNECT << 16);
                scsi_done(cmd);
        } else {
+               trace_scsi_dispatch_cmd_start(cmd);
                rtn = host->hostt->queuecommand(cmd, scsi_done);
        }
        spin_unlock_irqrestore(host->host_lock, flags);
        if (rtn) {
+               trace_scsi_dispatch_cmd_error(cmd, rtn);
                if (rtn != SCSI_MLQUEUE_DEVICE_BUSY &&
                    rtn != SCSI_MLQUEUE_TARGET_BUSY)
                        rtn = SCSI_MLQUEUE_HOST_BUSY;
@@ -781,6 +786,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
  */
 static void scsi_done(struct scsi_cmnd *cmd)
 {
+       trace_scsi_dispatch_cmd_done(cmd);
        blk_complete_request(cmd->request);
 }
 

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 3317597..f31d868 100644 (file)
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -39,6 +39,8 @@
 #include "scsi_logging.h"
 #include "scsi_transport_api.h"
 
+#include <trace/events/scsi.h>
+
 #define SENSE_TIMEOUT          (10*HZ)
 
 /*
@@ -52,6 +54,7 @@
 void scsi_eh_wakeup(struct Scsi_Host *shost)
 {
        if (shost->host_busy == shost->host_failed) {
+               trace_scsi_eh_wakeup(shost);
                wake_up_process(shost->ehandler);
                SCSI_LOG_ERROR_RECOVERY(5,
                                printk("Waking error handler thread\n"));
@@ -127,6 +130,7 @@ enum blk_eh_timer_return scsi_times_out(struct request *req)
        struct scsi_cmnd *scmd = req->special;
        enum blk_eh_timer_return rtn = BLK_EH_NOT_HANDLED;
 
+       trace_scsi_dispatch_cmd_timeout(scmd);
        scsi_log_completion(scmd, TIMEOUT_ERROR);
 
        if (scmd->device->host->transportt->eh_timed_out)

diff --git a/drivers/scsi/scsi_trace.c b/drivers/scsi/scsi_trace.c
new file mode 100644 (file)
index 0000000..9a3342a
--- /dev/null
+++ b/drivers/scsi/scsi_trace.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2010 FUJITSU LIMITED
+ * Copyright (C) 2010 Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/kernel.h>
+#include <linux/trace_seq.h>
+#include <trace/events/scsi.h>
+
+#define SERVICE_ACTION(cdb) ((cdb[8] << 8) | cdb[9])
+
+static const char *
+scsi_trace_misc(struct trace_seq *, unsigned char *, int);
+
+static const char *
+scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       const char *ret = p->buffer + p->len;
+       sector_t lba = 0, txlen = 0;
+
+       lba |= ((cdb[1] & 0x1F) << 16);
+       lba |=  (cdb[2] << 8);
+       lba |=   cdb[3];
+       txlen = cdb[4];
+
+       trace_seq_printf(p, "lba=%llu txlen=%llu",
+                        (unsigned long long)lba, (unsigned long long)txlen);
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
+static const char *
+scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       const char *ret = p->buffer + p->len;
+       sector_t lba = 0, txlen = 0;
+
+       lba |= (cdb[2] << 24);
+       lba |= (cdb[3] << 16);
+       lba |= (cdb[4] << 8);
+       lba |=  cdb[5];
+       txlen |= (cdb[7] << 8);
+       txlen |=  cdb[8];
+
+       trace_seq_printf(p, "lba=%llu txlen=%llu",
+                        (unsigned long long)lba, (unsigned long long)txlen);
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
+static const char *
+scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       const char *ret = p->buffer + p->len;
+       sector_t lba = 0, txlen = 0;
+
+       lba |= (cdb[2] << 24);
+       lba |= (cdb[3] << 16);
+       lba |= (cdb[4] << 8);
+       lba |=  cdb[5];
+       txlen |= (cdb[6] << 24);
+       txlen |= (cdb[7] << 16);
+       txlen |= (cdb[8] << 8);
+       txlen |=  cdb[9];
+
+       trace_seq_printf(p, "lba=%llu txlen=%llu",
+                        (unsigned long long)lba, (unsigned long long)txlen);
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
+static const char *
+scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       const char *ret = p->buffer + p->len;
+       sector_t lba = 0, txlen = 0;
+
+       lba |= ((u64)cdb[2] << 56);
+       lba |= ((u64)cdb[3] << 48);
+       lba |= ((u64)cdb[4] << 40);
+       lba |= ((u64)cdb[5] << 32);
+       lba |= (cdb[6] << 24);
+       lba |= (cdb[7] << 16);
+       lba |= (cdb[8] << 8);
+       lba |=  cdb[9];
+       txlen |= (cdb[10] << 24);
+       txlen |= (cdb[11] << 16);
+       txlen |= (cdb[12] << 8);
+       txlen |=  cdb[13];
+
+       trace_seq_printf(p, "lba=%llu txlen=%llu",
+                        (unsigned long long)lba, (unsigned long long)txlen);
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
+static const char *
+scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       const char *ret = p->buffer + p->len;
+       sector_t lba = 0, txlen = 0;
+
+       lba |= ((u64)cdb[12] << 56);
+       lba |= ((u64)cdb[13] << 48);
+       lba |= ((u64)cdb[14] << 40);
+       lba |= ((u64)cdb[15] << 32);
+       lba |= (cdb[16] << 24);
+       lba |= (cdb[17] << 16);
+       lba |= (cdb[18] << 8);
+       lba |=  cdb[19];
+       txlen |= (cdb[28] << 24);
+       txlen |= (cdb[29] << 16);
+       txlen |= (cdb[30] << 8);
+       txlen |=  cdb[31];
+
+       trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu",
+                       (SERVICE_ACTION(cdb) == READ_32 ? "READ" : "WRITE"),
+                       (unsigned long long)lba, (unsigned long long)txlen);
+
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
+static const char *
+scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       switch (SERVICE_ACTION(cdb)) {
+       case READ_32:
+       case WRITE_32:
+               return scsi_trace_rw32(p, cdb, len);
+       default:
+               return scsi_trace_misc(p, cdb, len);
+       }
+}
+
+static const char *
+scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       const char *ret = p->buffer + p->len;
+
+       trace_seq_printf(p, "-");
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
+const char *
+scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
+{
+       switch (cdb[0]) {
+       case READ_6:
+       case WRITE_6:
+               return scsi_trace_rw6(p, cdb, len);
+       case READ_10:
+       case WRITE_10:
+               return scsi_trace_rw10(p, cdb, len);
+       case READ_12:
+       case WRITE_12:
+               return scsi_trace_rw12(p, cdb, len);
+       case READ_16:
+       case WRITE_16:
+               return scsi_trace_rw16(p, cdb, len);
+       case VARIABLE_LENGTH_CMD:
+               return scsi_trace_varlen(p, cdb, len);
+       default:
+               return scsi_trace_misc(p, cdb, len);
+       }
+}

diff --git a/include/trace/events/scsi.h b/include/trace/events/scsi.h
new file mode 100644 (file)
index 0000000..76cbf82
--- /dev/null
+++ b/include/trace/events/scsi.h
@@ -0,0 +1,328 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM scsi
+
+#if !defined(_TRACE_SCSI_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SCSI_H
+
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_host.h>
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#define scsi_opcode_name(opcode)       { opcode, #opcode }
+#define show_opcode_name(val)                                  \
+       __print_symbolic(val,                                   \
+               scsi_opcode_name(TEST_UNIT_READY),              \
+               scsi_opcode_name(REZERO_UNIT),                  \
+               scsi_opcode_name(REQUEST_SENSE),                \
+               scsi_opcode_name(FORMAT_UNIT),                  \
+               scsi_opcode_name(READ_BLOCK_LIMITS),            \
+               scsi_opcode_name(REASSIGN_BLOCKS),              \
+               scsi_opcode_name(INITIALIZE_ELEMENT_STATUS),    \
+               scsi_opcode_name(READ_6),                       \
+               scsi_opcode_name(WRITE_6),                      \
+               scsi_opcode_name(SEEK_6),                       \
+               scsi_opcode_name(READ_REVERSE),                 \
+               scsi_opcode_name(WRITE_FILEMARKS),              \
+               scsi_opcode_name(SPACE),                        \
+               scsi_opcode_name(INQUIRY),                      \
+               scsi_opcode_name(RECOVER_BUFFERED_DATA),        \
+               scsi_opcode_name(MODE_SELECT),                  \
+               scsi_opcode_name(RESERVE),                      \
+               scsi_opcode_name(RELEASE),                      \
+               scsi_opcode_name(COPY),                         \
+               scsi_opcode_name(ERASE),                        \
+               scsi_opcode_name(MODE_SENSE),                   \
+               scsi_opcode_name(START_STOP),                   \
+               scsi_opcode_name(RECEIVE_DIAGNOSTIC),           \
+               scsi_opcode_name(SEND_DIAGNOSTIC),              \
+               scsi_opcode_name(ALLOW_MEDIUM_REMOVAL),         \
+               scsi_opcode_name(SET_WINDOW),                   \
+               scsi_opcode_name(READ_CAPACITY),                \
+               scsi_opcode_name(READ_10),                      \
+               scsi_opcode_name(WRITE_10),                     \
+               scsi_opcode_name(SEEK_10),                      \
+               scsi_opcode_name(POSITION_TO_ELEMENT),          \
+               scsi_opcode_name(WRITE_VERIFY),                 \
+               scsi_opcode_name(VERIFY),                       \
+               scsi_opcode_name(SEARCH_HIGH),                  \
+               scsi_opcode_name(SEARCH_EQUAL),                 \
+               scsi_opcode_name(SEARCH_LOW),                   \
+               scsi_opcode_name(SET_LIMITS),                   \
+               scsi_opcode_name(PRE_FETCH),                    \
+               scsi_opcode_name(READ_POSITION),                \
+               scsi_opcode_name(SYNCHRONIZE_CACHE),            \
+               scsi_opcode_name(LOCK_UNLOCK_CACHE),            \
+               scsi_opcode_name(READ_DEFECT_DATA),             \
+               scsi_opcode_name(MEDIUM_SCAN),                  \
+               scsi_opcode_name(COMPARE),                      \
+               scsi_opcode_name(COPY_VERIFY),                  \
+               scsi_opcode_name(WRITE_BUFFER),                 \
+               scsi_opcode_name(READ_BUFFER),                  \
+               scsi_opcode_name(UPDATE_BLOCK),                 \
+               scsi_opcode_name(READ_LONG),                    \
+               scsi_opcode_name(WRITE_LONG),                   \
+               scsi_opcode_name(CHANGE_DEFINITION),            \
+               scsi_opcode_name(WRITE_SAME),                   \
+               scsi_opcode_name(UNMAP),                        \
+               scsi_opcode_name(READ_TOC),                     \
+               scsi_opcode_name(LOG_SELECT),                   \
+               scsi_opcode_name(LOG_SENSE),                    \
+               scsi_opcode_name(XDWRITEREAD_10),               \
+               scsi_opcode_name(MODE_SELECT_10),               \
+               scsi_opcode_name(RESERVE_10),                   \
+               scsi_opcode_name(RELEASE_10),                   \
+               scsi_opcode_name(MODE_SENSE_10),                \
+               scsi_opcode_name(PERSISTENT_RESERVE_IN),        \
+               scsi_opcode_name(PERSISTENT_RESERVE_OUT),       \
+               scsi_opcode_name(VARIABLE_LENGTH_CMD),          \
+               scsi_opcode_name(REPORT_LUNS),                  \
+               scsi_opcode_name(MAINTENANCE_IN),               \
+               scsi_opcode_name(MAINTENANCE_OUT),              \
+               scsi_opcode_name(MOVE_MEDIUM),                  \
+               scsi_opcode_name(EXCHANGE_MEDIUM),              \
+               scsi_opcode_name(READ_12),                      \
+               scsi_opcode_name(WRITE_12),                     \
+               scsi_opcode_name(WRITE_VERIFY_12),              \
+               scsi_opcode_name(SEARCH_HIGH_12),               \
+               scsi_opcode_name(SEARCH_EQUAL_12),              \
+               scsi_opcode_name(SEARCH_LOW_12),                \
+               scsi_opcode_name(READ_ELEMENT_STATUS),          \
+               scsi_opcode_name(SEND_VOLUME_TAG),              \
+               scsi_opcode_name(WRITE_LONG_2),                 \
+               scsi_opcode_name(READ_16),                      \
+               scsi_opcode_name(WRITE_16),                     \
+               scsi_opcode_name(VERIFY_16),                    \
+               scsi_opcode_name(WRITE_SAME_16),                \
+               scsi_opcode_name(SERVICE_ACTION_IN),            \
+               scsi_opcode_name(SAI_READ_CAPACITY_16),         \
+               scsi_opcode_name(SAI_GET_LBA_STATUS),           \
+               scsi_opcode_name(MI_REPORT_TARGET_PGS),         \
+               scsi_opcode_name(MO_SET_TARGET_PGS),            \
+               scsi_opcode_name(READ_32),                      \
+               scsi_opcode_name(WRITE_32),                     \
+               scsi_opcode_name(WRITE_SAME_32),                \
+               scsi_opcode_name(ATA_16),                       \
+               scsi_opcode_name(ATA_12))
+
+#define scsi_hostbyte_name(result)     { result, #result }
+#define show_hostbyte_name(val)                                        \
+       __print_symbolic(val,                                   \
+               scsi_hostbyte_name(DID_OK),                     \
+               scsi_hostbyte_name(DID_NO_CONNECT),             \
+               scsi_hostbyte_name(DID_BUS_BUSY),               \
+               scsi_hostbyte_name(DID_TIME_OUT),               \
+               scsi_hostbyte_name(DID_BAD_TARGET),             \
+               scsi_hostbyte_name(DID_ABORT),                  \
+               scsi_hostbyte_name(DID_PARITY),                 \
+               scsi_hostbyte_name(DID_ERROR),                  \
+               scsi_hostbyte_name(DID_RESET),                  \
+               scsi_hostbyte_name(DID_BAD_INTR),               \
+               scsi_hostbyte_name(DID_PASSTHROUGH),            \
+               scsi_hostbyte_name(DID_SOFT_ERROR),             \
+               scsi_hostbyte_name(DID_IMM_RETRY),              \
+               scsi_hostbyte_name(DID_REQUEUE),                \
+               scsi_hostbyte_name(DID_TRANSPORT_DISRUPTED),    \
+               scsi_hostbyte_name(DID_TRANSPORT_FAILFAST))
+
+#define scsi_driverbyte_name(result)   { result, #result }
+#define show_driverbyte_name(val)                              \
+       __print_symbolic(val,                                   \
+               scsi_driverbyte_name(DRIVER_OK),                \
+               scsi_driverbyte_name(DRIVER_BUSY),              \
+               scsi_driverbyte_name(DRIVER_SOFT),              \
+               scsi_driverbyte_name(DRIVER_MEDIA),             \
+               scsi_driverbyte_name(DRIVER_ERROR),             \
+               scsi_driverbyte_name(DRIVER_INVALID),           \
+               scsi_driverbyte_name(DRIVER_TIMEOUT),           \
+               scsi_driverbyte_name(DRIVER_HARD),              \
+               scsi_driverbyte_name(DRIVER_SENSE))
+
+#define scsi_msgbyte_name(result)      { result, #result }
+#define show_msgbyte_name(val)                                 \
+       __print_symbolic(val,                                   \
+               scsi_msgbyte_name(COMMAND_COMPLETE),            \
+               scsi_msgbyte_name(EXTENDED_MESSAGE),            \
+               scsi_msgbyte_name(SAVE_POINTERS),               \
+               scsi_msgbyte_name(RESTORE_POINTERS),            \
+               scsi_msgbyte_name(DISCONNECT),                  \
+               scsi_msgbyte_name(INITIATOR_ERROR),             \
+               scsi_msgbyte_name(ABORT_TASK_SET),              \
+               scsi_msgbyte_name(MESSAGE_REJECT),              \
+               scsi_msgbyte_name(NOP),                         \
+               scsi_msgbyte_name(MSG_PARITY_ERROR),            \
+               scsi_msgbyte_name(LINKED_CMD_COMPLETE),         \
+               scsi_msgbyte_name(LINKED_FLG_CMD_COMPLETE),     \
+               scsi_msgbyte_name(TARGET_RESET),                \
+               scsi_msgbyte_name(ABORT_TASK),                  \
+               scsi_msgbyte_name(CLEAR_TASK_SET),              \
+               scsi_msgbyte_name(INITIATE_RECOVERY),           \
+               scsi_msgbyte_name(RELEASE_RECOVERY),            \
+               scsi_msgbyte_name(CLEAR_ACA),                   \
+               scsi_msgbyte_name(LOGICAL_UNIT_RESET),          \
+               scsi_msgbyte_name(SIMPLE_QUEUE_TAG),            \
+               scsi_msgbyte_name(HEAD_OF_QUEUE_TAG),           \
+               scsi_msgbyte_name(ORDERED_QUEUE_TAG),           \
+               scsi_msgbyte_name(IGNORE_WIDE_RESIDUE),         \
+               scsi_msgbyte_name(ACA),                         \
+               scsi_msgbyte_name(QAS_REQUEST),                 \
+               scsi_msgbyte_name(BUS_DEVICE_RESET),            \
+               scsi_msgbyte_name(ABORT))
+
+#define scsi_statusbyte_name(result)   { result, #result }
+#define show_statusbyte_name(val)                              \
+       __print_symbolic(val,                                   \
+               scsi_statusbyte_name(SAM_STAT_GOOD),            \
+               scsi_statusbyte_name(SAM_STAT_CHECK_CONDITION), \
+               scsi_statusbyte_name(SAM_STAT_CONDITION_MET),   \
+               scsi_statusbyte_name(SAM_STAT_BUSY),            \
+               scsi_statusbyte_name(SAM_STAT_INTERMEDIATE),    \
+               scsi_statusbyte_name(SAM_STAT_INTERMEDIATE_CONDITION_MET), \
+               scsi_statusbyte_name(SAM_STAT_RESERVATION_CONFLICT),    \
+               scsi_statusbyte_name(SAM_STAT_COMMAND_TERMINATED),      \
+               scsi_statusbyte_name(SAM_STAT_TASK_SET_FULL),   \
+               scsi_statusbyte_name(SAM_STAT_ACA_ACTIVE),      \
+               scsi_statusbyte_name(SAM_STAT_TASK_ABORTED))
+
+const char *scsi_trace_parse_cdb(struct trace_seq*, unsigned char*, int);
+#define __parse_cdb(cdb, len) scsi_trace_parse_cdb(p, cdb, len)
+
+TRACE_EVENT(scsi_dispatch_cmd_start,
+
+       TP_PROTO(struct scsi_cmnd *cmd),
+
+       TP_ARGS(cmd),
+
+       TP_STRUCT__entry(
+               __field( unsigned int,  host_no )
+               __field( unsigned int,  channel )
+               __field( unsigned int,  id      )
+               __field( unsigned int,  lun     )
+               __field( unsigned int,  opcode  )
+               __field( unsigned int,  cmd_len )
+               __dynamic_array(unsigned char,  cmnd, cmd->cmd_len)
+       ),
+
+       TP_fast_assign(
+               __entry->host_no        = cmd->device->host->host_no;
+               __entry->channel        = cmd->device->channel;
+               __entry->id             = cmd->device->id;
+               __entry->lun            = cmd->device->lun;
+               __entry->opcode         = cmd->cmnd[0];
+               __entry->cmd_len        = cmd->cmd_len;
+               memcpy(__get_dynamic_array(cmnd), cmd->cmnd, cmd->cmd_len);
+       ),
+
+       TP_printk("host_no=%u channel=%u id=%u lun=%u cmnd=(%s %s raw=%s)",
+                 __entry->host_no, __entry->channel, __entry->id,
+                 __entry->lun, show_opcode_name(__entry->opcode),
+                 __parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
+                 __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len))
+);
+
+TRACE_EVENT(scsi_dispatch_cmd_error,
+
+       TP_PROTO(struct scsi_cmnd *cmd, int rtn),
+
+       TP_ARGS(cmd, rtn),
+
+       TP_STRUCT__entry(
+               __field( unsigned int,  host_no )
+               __field( unsigned int,  channel )
+               __field( unsigned int,  id      )
+               __field( unsigned int,  lun     )
+               __field( int,           rtn     )
+               __field( unsigned int,  opcode  )
+               __field( unsigned int,  cmd_len )
+               __dynamic_array(unsigned char,  cmnd, cmd->cmd_len)
+       ),
+
+       TP_fast_assign(
+               __entry->host_no        = cmd->device->host->host_no;
+               __entry->channel        = cmd->device->channel;
+               __entry->id             = cmd->device->id;
+               __entry->lun            = cmd->device->lun;
+               __entry->rtn            = rtn;
+               __entry->opcode         = cmd->cmnd[0];
+               __entry->cmd_len        = cmd->cmd_len;
+               memcpy(__get_dynamic_array(cmnd), cmd->cmnd, cmd->cmd_len);
+       ),
+
+       TP_printk("host_no=%u channel=%u id=%u lun=%u cmnd=(%s %s raw=%s)"
+                 " rtn=%d",
+                 __entry->host_no, __entry->channel, __entry->id,
+                 __entry->lun, show_opcode_name(__entry->opcode),
+                 __parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
+                 __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len),
+                 __entry->rtn)
+);
+
+DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template,
+
+       TP_PROTO(struct scsi_cmnd *cmd),
+
+       TP_ARGS(cmd),
+
+       TP_STRUCT__entry(
+               __field( unsigned int,  host_no )
+               __field( unsigned int,  channel )
+               __field( unsigned int,  id      )
+               __field( unsigned int,  lun     )
+               __field( int,           result  )
+               __field( unsigned int,  opcode  )
+               __field( unsigned int,  cmd_len )
+               __dynamic_array(unsigned char,  cmnd, cmd->cmd_len)
+       ),
+
+       TP_fast_assign(
+               __entry->host_no        = cmd->device->host->host_no;
+               __entry->channel        = cmd->device->channel;
+               __entry->id             = cmd->device->id;
+               __entry->lun            = cmd->device->lun;
+               __entry->result         = cmd->result;
+               __entry->opcode         = cmd->cmnd[0];
+               __entry->cmd_len        = cmd->cmd_len;
+               memcpy(__get_dynamic_array(cmnd), cmd->cmnd, cmd->cmd_len);
+       ),
+
+       TP_printk("host_no=%u channel=%u id=%u lun=%u cmnd=(%s %s raw=%s) "
+                 "result=(driver=%s host=%s message=%s status=%s)",
+                 __entry->host_no, __entry->channel, __entry->id,
+                 __entry->lun, show_opcode_name(__entry->opcode),
+                 __parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
+                 __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len),
+                 show_driverbyte_name(((__entry->result) >> 24) & 0xff),
+                 show_hostbyte_name(((__entry->result) >> 16) & 0xff),
+                 show_msgbyte_name(((__entry->result) >> 8) & 0xff),
+                 show_statusbyte_name(__entry->result & 0xff))
+);
+
+DEFINE_EVENT(scsi_cmd_done_timeout_template, scsi_dispatch_cmd_done,
+            TP_PROTO(struct scsi_cmnd *cmd),
+            TP_ARGS(cmd));
+
+DEFINE_EVENT(scsi_cmd_done_timeout_template, scsi_dispatch_cmd_timeout,
+            TP_PROTO(struct scsi_cmnd *cmd),
+            TP_ARGS(cmd));
+
+TRACE_EVENT(scsi_eh_wakeup,
+
+       TP_PROTO(struct Scsi_Host *shost),
+
+       TP_ARGS(shost),
+
+       TP_STRUCT__entry(
+               __field( unsigned int,  host_no )
+       ),
+
+       TP_fast_assign(
+               __entry->host_no        = shost->host_no;
+       ),
+
+       TP_printk("host_no=%u", __entry->host_no)
+);
+
+#endif /*  _TRACE_SCSI_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 7c4a0ca..9cb5df5 100644 (file)
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -209,6 +209,7 @@ int trace_seq_putc(struct trace_seq *s, unsigned char c)
 
        return 1;
 }
+EXPORT_SYMBOL(trace_seq_putc);
 
 int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len)
 {