mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-27 14:14:24 +08:00
43d23b94e5
This patch fixes the following compiler warning:
In file included from drivers/scsi/scsi_error.c:46:
drivers/scsi/scsi_error.c: In function 'scsi_eh_target_reset':
drivers/scsi/scsi_logging.h:65:81: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
65 | LOGGING(SCSI_LOG_ERROR_SHIFT, SCSI_LOG_ERROR_BITS, LEVEL,CMD);
| ^
drivers/scsi/scsi_error.c:1562:4: note: in expansion of macro 'SCSI_LOG_ERROR_RECOVERY'
1562 | SCSI_LOG_ERROR_RECOVERY(3,
| ^~~~~~~~~~~~~~~~~~~~~~~
Link: https://lore.kernel.org/r/20191209174205.190025-1-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
86 lines
3.6 KiB
C
86 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _SCSI_LOGGING_H
|
|
#define _SCSI_LOGGING_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 10 3-bit
|
|
* bitfields, 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) \
|
|
do { \
|
|
if (unlikely((SCSI_LOG_LEVEL(SHIFT, BITS)) > (LEVEL))) \
|
|
do { \
|
|
CMD; \
|
|
} while (0); \
|
|
} while (0)
|
|
#else
|
|
#define SCSI_LOG_LEVEL(SHIFT, BITS) 0
|
|
#define SCSI_CHECK_LOGGING(SHIFT, BITS, LEVEL, CMD) do { } while (0)
|
|
#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 */
|