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xfs: define printk_once variants for xfs messages

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There are a couple places where we directly call printk_once() and one
of them doesn't follow the standard xfs subsystem printk format as a
result.

#define printk_once variants to go with our existing printk_ratelimited
#defines so we can do one-shot printks in a consistent manner.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Eric Sandeen
2020-04-27 11:00:42 -07:00
committed by Darrick J. Wong
parent 166405f6b5
commit ec43f6da31
3 changed files with 24 additions and 9 deletions
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21
fs/xfs/xfs_message.h
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@@ -31,15 +31,27 @@ void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
}
#endif
#define xfs_printk_ratelimited(func, dev, fmt, ...) \
#define xfs_printk_ratelimited(func, dev, fmt, ...) \
do { \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
if (__ratelimit(&_rs)) \
func(dev, fmt, ##__VA_ARGS__); \
func(dev, fmt, ##__VA_ARGS__); \
} while (0)
#define xfs_printk_once(func, dev, fmt, ...) \
({ \
static bool __section(.data.once) __print_once; \
bool __ret_print_once = !__print_once; \
\
if (!__print_once) { \
__print_once = true; \
func(dev, fmt, ##__VA_ARGS__); \
} \
unlikely(__ret_print_once); \
})
#define xfs_emerg_ratelimited(dev, fmt, ...) \
xfs_printk_ratelimited(xfs_emerg, dev, fmt, ##__VA_ARGS__)
#define xfs_alert_ratelimited(dev, fmt, ...) \
@@ -57,6 +69,11 @@ do { \
#define xfs_debug_ratelimited(dev, fmt, ...) \
xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__)
#define xfs_warn_once(dev, fmt, ...) \
xfs_printk_once(xfs_warn, dev, fmt, ##__VA_ARGS__)
#define xfs_notice_once(dev, fmt, ...) \
xfs_printk_once(xfs_notice, dev, fmt, ##__VA_ARGS__)
void assfail(struct xfs_mount *mp, char *expr, char *f, int l);
void asswarn(struct xfs_mount *mp, char *expr, char *f, int l);