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a358f40600
Certain uses of "do once" functionality reside outside of fast path,
and so do not require jump label patching via static keys, making
existing DO_ONCE undesirable in such cases.
Replace uses of __section(".data.once") with DO_ONCE_LITE(_IF)?
This patch changes the return values of xfs_printk_once, printk_once,
and printk_deferred_once. Before, they returned whether the print was
performed, but now, they always return true. This is okay because the
return values of the following macros are entirely ignored throughout
the kernel:
- xfs_printk_once
- xfs_warn_once
- xfs_notice_once
- xfs_info_once
- printk_once
- pr_emerg_once
- pr_alert_once
- pr_crit_once
- pr_err_once
- pr_warn_once
- pr_notice_once
- pr_info_once
- pr_devel_once
- pr_debug_once
- printk_deferred_once
- orc_warn
Changes
v3:
- Expand commit message to explain why changing return values of
xfs_printk_once, printk_once, printk_deferred_once is benign
v2:
- Fix i386 build warnings
Signed-off-by: Tanner Love <tannerlove@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __XFS_MESSAGE_H
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#define __XFS_MESSAGE_H 1
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#include <linux/once_lite.h>
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struct xfs_mount;
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extern __printf(2, 3)
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void xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_alert(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(3, 4)
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void xfs_alert_tag(const struct xfs_mount *mp, int tag, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_crit(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_err(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_warn(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_notice(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_info(const struct xfs_mount *mp, const char *fmt, ...);
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#ifdef DEBUG
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extern __printf(2, 3)
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void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...);
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#else
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static inline __printf(2, 3)
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void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
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{
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}
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#endif
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#define xfs_printk_ratelimited(func, dev, fmt, ...) \
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do { \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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if (__ratelimit(&_rs)) \
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func(dev, fmt, ##__VA_ARGS__); \
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} while (0)
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#define xfs_printk_once(func, dev, fmt, ...) \
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DO_ONCE_LITE(func, dev, fmt, ##__VA_ARGS__)
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#define xfs_emerg_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_emerg, dev, fmt, ##__VA_ARGS__)
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#define xfs_alert_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_alert, dev, fmt, ##__VA_ARGS__)
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#define xfs_crit_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_crit, dev, fmt, ##__VA_ARGS__)
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#define xfs_err_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_err, dev, fmt, ##__VA_ARGS__)
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#define xfs_warn_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_warn, dev, fmt, ##__VA_ARGS__)
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#define xfs_notice_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_notice, dev, fmt, ##__VA_ARGS__)
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#define xfs_info_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_info, dev, fmt, ##__VA_ARGS__)
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#define xfs_debug_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__)
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#define xfs_warn_once(dev, fmt, ...) \
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xfs_printk_once(xfs_warn, dev, fmt, ##__VA_ARGS__)
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#define xfs_notice_once(dev, fmt, ...) \
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xfs_printk_once(xfs_notice, dev, fmt, ##__VA_ARGS__)
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#define xfs_info_once(dev, fmt, ...) \
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xfs_printk_once(xfs_info, dev, fmt, ##__VA_ARGS__)
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void assfail(struct xfs_mount *mp, char *expr, char *f, int l);
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void asswarn(struct xfs_mount *mp, char *expr, char *f, int l);
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extern void xfs_hex_dump(const void *p, int length);
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void xfs_buf_alert_ratelimited(struct xfs_buf *bp, const char *rlmsg,
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const char *fmt, ...);
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#endif /* __XFS_MESSAGE_H */
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