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| author | Russell King <rmk+kernel@armlinux.org.uk> | 2017-09-09 18:34:41 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2017-09-09 18:34:41 +0300 |
| commit | e558bdc21ae1f0db520eccd84015e17d8a589973 (patch) | |
| tree | b436123bd52f267b8c7f361618cded3e1e4421ea /include/linux/errseq.h | |
| parent | 746a272e44141af24a02f6c9b0f65f4c4598ed42 (diff) | |
| parent | 9a3dc3186fc3795e076a4122da9e0258651a9631 (diff) | |
| download | linux-e558bdc21ae1f0db520eccd84015e17d8a589973.tar.xz | |
Merge branches 'fixes' and 'misc' into for-linus
Diffstat (limited to 'include/linux/errseq.h')
| -rw-r--r-- | include/linux/errseq.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/errseq.h b/include/linux/errseq.h new file mode 100644 index 000000000000..9e0d444ac88d --- /dev/null +++ b/include/linux/errseq.h @@ -0,0 +1,19 @@ +#ifndef _LINUX_ERRSEQ_H +#define _LINUX_ERRSEQ_H + +/* See lib/errseq.c for more info */ + +typedef u32 errseq_t; + +errseq_t __errseq_set(errseq_t *eseq, int err); +static inline void errseq_set(errseq_t *eseq, int err) +{ + /* Optimize for the common case of no error */ + if (unlikely(err)) + __errseq_set(eseq, err); +} + +errseq_t errseq_sample(errseq_t *eseq); +int errseq_check(errseq_t *eseq, errseq_t since); +int errseq_check_and_advance(errseq_t *eseq, errseq_t *since); +#endif |