cregit-Linux how code gets into the kernel

Release 4.12 include/trace/events/target.h


#undef TRACE_SYSTEM

#define TRACE_SYSTEM target

#if !defined(_TRACE_TARGET_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_TARGET_H

#include <linux/tracepoint.h>
#include <linux/trace_seq.h>
#include <scsi/scsi_proto.h>
#include <scsi/scsi_tcq.h>
#include <target/target_core_base.h>

/* cribbed verbatim from <trace/event/scsi.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_16),         \
                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 show_task_attribute_name(val)				\
	__print_symbolic(val,                                   \
                { TCM_SIMPLE_TAG,       "SIMPLE"        },      \
                { TCM_HEAD_TAG,         "HEAD"          },      \
                { TCM_ORDERED_TAG,      "ORDERED"       },      \
                { TCM_ACA_TAG,          "ACA"           } )


#define show_scsi_status_name(val)				\
	__print_symbolic(val,                                   \
                { SAM_STAT_GOOD,        "GOOD" },               \
                { SAM_STAT_CHECK_CONDITION, "CHECK CONDITION" }, \
                { SAM_STAT_CONDITION_MET, "CONDITION MET" },    \
                { SAM_STAT_BUSY,        "BUSY" },               \
                { SAM_STAT_INTERMEDIATE, "INTERMEDIATE" },      \
                { SAM_STAT_INTERMEDIATE_CONDITION_MET, "INTERMEDIATE CONDITION MET" }, \
                { SAM_STAT_RESERVATION_CONFLICT, "RESERVATION CONFLICT" }, \
                { SAM_STAT_COMMAND_TERMINATED, "COMMAND TERMINATED" }, \
                { SAM_STAT_TASK_SET_FULL, "TASK SET FULL" },    \
                { SAM_STAT_ACA_ACTIVE, "ACA ACTIVE" },          \
                { SAM_STAT_TASK_ABORTED, "TASK ABORTED" } )

TRACE_EVENT(target_sequencer_start,

	TP_PROTO(struct se_cmd *cmd),

	TP_ARGS(cmd),

	TP_STRUCT__entry(
                __field( unsigned int,  unpacked_lun    )
                __field( unsigned int,  opcode          )
                __field( unsigned int,  data_length     )
                __field( unsigned int,  task_attribute  )
                __array( unsigned char, cdb, TCM_MAX_COMMAND_SIZE       )
                __string( initiator,    cmd->se_sess->se_node_acl->initiatorname        )
        ),

	TP_fast_assign(
                __entry->unpacked_lun   = cmd->orig_fe_lun;
                __entry->opcode         = cmd->t_task_cdb[0];
                __entry->data_length    = cmd->data_length;
                __entry->task_attribute = cmd->sam_task_attr;
                memcpy(__entry->cdb, cmd->t_task_cdb, TCM_MAX_COMMAND_SIZE);
                __assign_str(initiator, cmd->se_sess->se_node_acl->initiatorname);
        ),

	TP_printk("%s -> LUN %03u %s data_length %6u  CDB %s  (TA:%s C:%02x)",
                  __get_str(initiator), __entry->unpacked_lun,
                  show_opcode_name(__entry->opcode),
                  __entry->data_length, __print_hex(__entry->cdb, 16),
                  show_task_attribute_name(__entry->task_attribute),
                  scsi_command_size(__entry->cdb) <= 16 ?
                        __entry->cdb[scsi_command_size(__entry->cdb) - 1] :
                        __entry->cdb[1]
        )
);

TRACE_EVENT(target_cmd_complete,

	TP_PROTO(struct se_cmd *cmd),

	TP_ARGS(cmd),

	TP_STRUCT__entry(
                __field( unsigned int,  unpacked_lun    )
                __field( unsigned int,  opcode          )
                __field( unsigned int,  data_length     )
                __field( unsigned int,  task_attribute  )
                __field( unsigned char, scsi_status     )
                __field( unsigned char, sense_length    )
                __array( unsigned char, cdb, TCM_MAX_COMMAND_SIZE       )
                __array( unsigned char, sense_data, 18	)
                __string(initiator,     cmd->se_sess->se_node_acl->initiatorname)
        ),

	TP_fast_assign(
                __entry->unpacked_lun   = cmd->orig_fe_lun;
                __entry->opcode         = cmd->t_task_cdb[0];
                __entry->data_length    = cmd->data_length;
                __entry->task_attribute = cmd->sam_task_attr;
                __entry->scsi_status    = cmd->scsi_status;
                __entry->sense_length   = cmd->scsi_status == SAM_STAT_CHECK_CONDITION ?
                        min(18, ((u8 *) cmd->sense_buffer)[SPC_ADD_SENSE_LEN_OFFSET] + 8) : 0;
                memcpy(__entry->cdb, cmd->t_task_cdb, TCM_MAX_COMMAND_SIZE);
                memcpy(__entry->sense_data, cmd->sense_buffer, __entry->sense_length);
                __assign_str(initiator, cmd->se_sess->se_node_acl->initiatorname);
        ),

	TP_printk("%s <- LUN %03u status %s (sense len %d%s%s)  %s data_length %6u  CDB %s  (TA:%s C:%02x)",
                  __get_str(initiator), __entry->unpacked_lun,
                  show_scsi_status_name(__entry->scsi_status),
                  __entry->sense_length, __entry->sense_length ? " / " : "",
                  __print_hex(__entry->sense_data, __entry->sense_length),
                  show_opcode_name(__entry->opcode),
                  __entry->data_length, __print_hex(__entry->cdb, 16),
                  show_task_attribute_name(__entry->task_attribute),
                  scsi_command_size(__entry->cdb) <= 16 ?
                        __entry->cdb[scsi_command_size(__entry->cdb) - 1] :
                        __entry->cdb[1]
        )
);

#endif /*  _TRACE_TARGET_H */

/* This part must be outside protection */
#include <trace/define_trace.h>

Overall Contributors

PersonTokensPropCommitsCommitProp
Roland Dreier13997.89%240.00%
Hannes Reinecke10.70%120.00%
Christoph Hellwig10.70%120.00%
Bart Van Assche10.70%120.00%
Total142100.00%5100.00%
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