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| author | James Simmons <jsimmons@infradead.org> | 2016-03-27 20:26:28 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-29 12:10:20 -0700 |
| commit | d47b7026ba96f604318e46354e8ec129f9b960d7 (patch) | |
| tree | 4198004589a136f514c4700f6be3254a7ea94577 /drivers/staging/lustre/include/linux | |
| parent | 304d13ff4d5dcccea2cf199d96d6716de31b7321 (diff) | |
| download | op-kernel-dev-d47b7026ba96f604318e46354e8ec129f9b960d7.zip op-kernel-dev-d47b7026ba96f604318e46354e8ec129f9b960d7.tar.gz | |
staging: lustre: libcfs: add CFS_FAULT_CHECK()
Add the macro CFS_FAULT_CHECK() which behaves like CFS_FAIL_CHECK()
except that any site may be matched by setting CFS_FAULT (0x02000000)
in cfs_fail_loc. Add cfs_fail_err for use as a return value with
CFS_FAULT_CHECK().
Signed-off-by: John L. Hammond <john.hammond@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5409
Reviewed-on: http://review.whamcloud.com/11263
Reviewed-by: Robert Read <robert.read@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre/include/linux')
| -rw-r--r-- | drivers/staging/lustre/include/linux/libcfs/libcfs_fail.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_fail.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_fail.h index aa69c6a..2e008bf 100644 --- a/drivers/staging/lustre/include/linux/libcfs/libcfs_fail.h +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_fail.h @@ -38,6 +38,7 @@ extern unsigned long cfs_fail_loc; extern unsigned int cfs_fail_val; +extern int cfs_fail_err; extern wait_queue_head_t cfs_race_waitq; extern int cfs_race_state; @@ -70,9 +71,14 @@ enum { #define CFS_FAIL_RAND 0x08000000 /* fail 1/N of the times */ #define CFS_FAIL_USR1 0x04000000 /* user flag */ -#define CFS_FAIL_PRECHECK(id) (cfs_fail_loc && \ - (cfs_fail_loc & CFS_FAIL_MASK_LOC) == \ - ((id) & CFS_FAIL_MASK_LOC)) +#define CFS_FAULT 0x02000000 /* match any CFS_FAULT_CHECK */ + +static inline bool CFS_FAIL_PRECHECK(__u32 id) +{ + return cfs_fail_loc != 0 && + ((cfs_fail_loc & CFS_FAIL_MASK_LOC) == (id & CFS_FAIL_MASK_LOC) || + (cfs_fail_loc & id & CFS_FAULT)); +} static inline int cfs_fail_check_set(__u32 id, __u32 value, int set, int quiet) @@ -144,6 +150,9 @@ static inline int cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set) #define CFS_FAIL_TIMEOUT_MS_ORSET(id, value, ms) \ cfs_fail_timeout_set(id, value, ms, CFS_FAIL_LOC_ORSET) +#define CFS_FAULT_CHECK(id) \ + CFS_FAIL_CHECK(CFS_FAULT | (id)) + /* The idea here is to synchronise two threads to force a race. The * first thread that calls this with a matching fail_loc is put to * sleep. The next thread that calls with the same fail_loc wakes up |
