diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-07-30 12:15:13 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-07-30 12:15:13 +0300 |
| commit | f5db340f19f14a8df9dfd22d71fba1513e9f1f7e (patch) | |
| tree | 131d3345bc987aee3c922624de816492e7f323a4 /include/linux/errseq.h | |
| parent | ee438ec8f33c5af0d4a4ffb935c5b9272e8c2680 (diff) | |
| parent | 38115f2f8cec8087d558c062e779c443a01f87d6 (diff) | |
| download | linux-f5db340f19f14a8df9dfd22d71fba1513e9f1f7e.tar.xz | |
Merge branch 'perf/urgent' into perf/core, to pick up latest fixes and refresh the tree
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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 |