83 lines
3.5 KiB
C
83 lines
3.5 KiB
C
|
#ifndef _SCSI_LOGGING_H
|
||
|
|
#define _SCSI_LOGGING_H
|
||
|
|
|
||
|
|
#include <linux/config.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This defines the scsi logging feature. It is a means by which the user
|
||
|
|
* can select how much information they get about various goings on, and it
|
||
|
|
* can be really useful for fault tracing. The logging word is divided into
|
||
|
|
* 8 nibbles, each of which describes a loglevel. The division of things is
|
||
|
|
* somewhat arbitrary, and the division of the word could be changed if it
|
||
|
|
* were really needed for any reason. The numbers below are the only place
|
||
|
|
* where these are specified. For a first go-around, 3 bits is more than
|
||
|
|
* enough, since this gives 8 levels of logging (really 7, since 0 is always
|
||
|
|
* off). Cutting to 2 bits might be wise at some point.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define SCSI_LOG_ERROR_SHIFT 0
|
||
|
|
#define SCSI_LOG_TIMEOUT_SHIFT 3
|
||
|
|
#define SCSI_LOG_SCAN_SHIFT 6
|
||
|
|
#define SCSI_LOG_MLQUEUE_SHIFT 9
|
||
|
|
#define SCSI_LOG_MLCOMPLETE_SHIFT 12
|
||
|
|
#define SCSI_LOG_LLQUEUE_SHIFT 15
|
||
|
|
#define SCSI_LOG_LLCOMPLETE_SHIFT 18
|
||
|
|
#define SCSI_LOG_HLQUEUE_SHIFT 21
|
||
|
|
#define SCSI_LOG_HLCOMPLETE_SHIFT 24
|
||
|
|
#define SCSI_LOG_IOCTL_SHIFT 27
|
||
|
|
|
||
|
|
#define SCSI_LOG_ERROR_BITS 3
|
||
|
|
#define SCSI_LOG_TIMEOUT_BITS 3
|
||
|
|
#define SCSI_LOG_SCAN_BITS 3
|
||
|
|
#define SCSI_LOG_MLQUEUE_BITS 3
|
||
|
|
#define SCSI_LOG_MLCOMPLETE_BITS 3
|
||
|
|
#define SCSI_LOG_LLQUEUE_BITS 3
|
||
|
|
#define SCSI_LOG_LLCOMPLETE_BITS 3
|
||
|
|
#define SCSI_LOG_HLQUEUE_BITS 3
|
||
|
|
#define SCSI_LOG_HLCOMPLETE_BITS 3
|
||
|
|
#define SCSI_LOG_IOCTL_BITS 3
|
||
|
|
|
||
|
|
extern unsigned int scsi_logging_level;
|
||
|
|
|
||
|
|
#ifdef CONFIG_SCSI_LOGGING
|
||
|
|
|
||
|
|
#define SCSI_LOG_LEVEL(SHIFT, BITS) \
|
||
|
|
((scsi_logging_level >> (SHIFT)) & ((1 << (BITS)) - 1))
|
||
|
|
|
||
|
|
#define SCSI_CHECK_LOGGING(SHIFT, BITS, LEVEL, CMD) \
|
||
|
|
{ \
|
||
|
|
if (unlikely((SCSI_LOG_LEVEL(SHIFT, BITS)) > (LEVEL))) \
|
||
|
|
(CMD); \
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
#define SCSI_CHECK_LOGGING(SHIFT, BITS, LEVEL, CMD)
|
||
|
|
#endif /* CONFIG_SCSI_LOGGING */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These are the macros that are actually used throughout the code to
|
||
|
|
* log events. If logging isn't enabled, they are no-ops and will be
|
||
|
|
* completely absent from the user's code.
|
||
|
|
*/
|
||
|
|
#define SCSI_LOG_ERROR_RECOVERY(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_ERROR_SHIFT, SCSI_LOG_ERROR_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_TIMEOUT(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_TIMEOUT_SHIFT, SCSI_LOG_TIMEOUT_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_SCAN_BUS(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_SCAN_SHIFT, SCSI_LOG_SCAN_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_MLQUEUE(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_MLQUEUE_SHIFT, SCSI_LOG_MLQUEUE_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_MLCOMPLETE(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_MLCOMPLETE_SHIFT, SCSI_LOG_MLCOMPLETE_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_LLQUEUE(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_LLQUEUE_SHIFT, SCSI_LOG_LLQUEUE_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_LLCOMPLETE(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_LLCOMPLETE_SHIFT, SCSI_LOG_LLCOMPLETE_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_HLQUEUE(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_HLQUEUE_SHIFT, SCSI_LOG_HLQUEUE_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_HLCOMPLETE(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_HLCOMPLETE_SHIFT, SCSI_LOG_HLCOMPLETE_BITS, LEVEL,CMD);
|
||
|
|
#define SCSI_LOG_IOCTL(LEVEL,CMD) \
|
||
|
|
SCSI_CHECK_LOGGING(SCSI_LOG_IOCTL_SHIFT, SCSI_LOG_IOCTL_BITS, LEVEL,CMD);
|
||
|
|
|
||
|
|
#endif /* _SCSI_LOGGING_H */
|