int __cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set);
enum {
- CFS_FAIL_LOC_NOSET = 0,
- CFS_FAIL_LOC_ORSET = 1,
- CFS_FAIL_LOC_RESET = 2,
- CFS_FAIL_LOC_VALUE = 3
+ CFS_FAIL_LOC_NOSET = 0,
+ CFS_FAIL_LOC_ORSET = 1,
+ CFS_FAIL_LOC_RESET = 2,
+ CFS_FAIL_LOC_VALUE = 3
};
-/* Failure ranges
- "0x0100 - 0x3fff" for Lustre
- "0xe000 - 0xefff" for LNet
- "0xf000 - 0xffff" for LNDs */
+/*
+ * Failure ranges:
+ * "0x0100 - 0x3fff" for Lustre
+ * "0xe000 - 0xefff" for LNet
+ * "0xf000 - 0xffff" for LNDs
+ */
+
/* Failure injection control */
#define CFS_FAIL_MASK_SYS 0x0000FF00
#define CFS_FAIL_MASK_LOC (0x000000FF | CFS_FAIL_MASK_SYS)
(cfs_fail_loc & id & CFS_FAULT));
}
+#define UNLIKELY_CHECK_SET(id, value, set, quiet) \
+ (unlikely(cfs_fail_check_set(id, value, set, quiet)))
+
static inline int cfs_fail_check_set(__u32 id, __u32 value, int set, int quiet)
{
unsigned long failed_once = cfs_fail_loc & CFS_FAILED; /* ok if racy */
return ret;
}
-/* If id hit cfs_fail_loc, return 1, otherwise return 0 */
+/*
+ *If id hit cfs_fail_loc, return 1, otherwise return 0
+ */
#define CFS_FAIL_CHECK(id) \
- cfs_fail_check_set(id, 0, CFS_FAIL_LOC_NOSET, 0)
+ UNLIKELY_CHECK_SET(id, 0, CFS_FAIL_LOC_NOSET, 0)
#define CFS_FAIL_CHECK_QUIET(id) \
- cfs_fail_check_set(id, 0, CFS_FAIL_LOC_NOSET, 1)
+ UNLIKELY_CHECK_SET(id, 0, CFS_FAIL_LOC_NOSET, 1)
-/* If id hit cfs_fail_loc and cfs_fail_val == (-1 or value) return 1,
- * otherwise return 0 */
+/*
+ * If id hit cfs_fail_loc and cfs_fail_val == (-1 or value) return 1,
+ * otherwise return 0
+ */
#define CFS_FAIL_CHECK_VALUE(id, value) \
- cfs_fail_check_set(id, value, CFS_FAIL_LOC_VALUE, 0)
+ UNLIKELY_CHECK_SET(id, value, CFS_FAIL_LOC_VALUE, 0)
#define CFS_FAIL_CHECK_VALUE_QUIET(id, value) \
- cfs_fail_check_set(id, value, CFS_FAIL_LOC_VALUE, 1)
+ UNLIKELY_CHECK_SET(id, value, CFS_FAIL_LOC_VALUE, 1)
-/* If id hit cfs_fail_loc, cfs_fail_loc |= value and return 1,
- * otherwise return 0 */
+/*
+ * If id hit cfs_fail_loc, cfs_fail_loc |= value and return 1,
+ * otherwise return 0
+ */
#define CFS_FAIL_CHECK_ORSET(id, value) \
- cfs_fail_check_set(id, value, CFS_FAIL_LOC_ORSET, 0)
+ UNLIKELY_CHECK_SET(id, value, CFS_FAIL_LOC_ORSET, 0)
#define CFS_FAIL_CHECK_ORSET_QUIET(id, value) \
- cfs_fail_check_set(id, value, CFS_FAIL_LOC_ORSET, 1)
+ UNLIKELY_CHECK_SET(id, value, CFS_FAIL_LOC_ORSET, 1)
-/* If id hit cfs_fail_loc, cfs_fail_loc = value and return 1,
- * otherwise return 0 */
+/*
+ * If id hit cfs_fail_loc, cfs_fail_loc = value and return 1,
+ * otherwise return 0
+ */
#define CFS_FAIL_CHECK_RESET(id, value) \
- cfs_fail_check_set(id, value, CFS_FAIL_LOC_RESET, 0)
+ UNLIKELY_CHECK_SET(id, value, CFS_FAIL_LOC_RESET, 0)
#define CFS_FAIL_CHECK_RESET_QUIET(id, value) \
- cfs_fail_check_set(id, value, CFS_FAIL_LOC_RESET, 1)
+ UNLIKELY_CHECK_SET(id, value, CFS_FAIL_LOC_RESET, 1)
+
+#define UNLIKELY_TIMEOUT_SET(id, value, ms, set) \
+ (unlikely(cfs_fail_timeout_set(id, value, ms, set)))
static inline int cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set)
{
- if (unlikely(CFS_FAIL_PRECHECK(id)))
- return __cfs_fail_timeout_set(id, value, ms, set);
- else
- return 0;
+ if (unlikely(CFS_FAIL_PRECHECK(id)))
+ return __cfs_fail_timeout_set(id, value, ms, set);
+ else
+ return 0;
}
/* If id hit cfs_fail_loc, sleep for seconds or milliseconds */
#define CFS_FAIL_TIMEOUT(id, secs) \
- cfs_fail_timeout_set(id, 0, (secs) * 1000, CFS_FAIL_LOC_NOSET)
+ UNLIKELY_TIMEOUT_SET(id, 0, (secs) * 1000, CFS_FAIL_LOC_NOSET)
#define CFS_FAIL_TIMEOUT_MS(id, ms) \
- cfs_fail_timeout_set(id, 0, ms, CFS_FAIL_LOC_NOSET)
+ UNLIKELY_TIMEOUT_SET(id, 0, ms, CFS_FAIL_LOC_NOSET)
-/* If id hit cfs_fail_loc, cfs_fail_loc |= value and
- * sleep seconds or milliseconds */
+/*
+ * If id hit cfs_fail_loc, cfs_fail_loc |= value and
+ * sleep seconds or milliseconds
+ */
#define CFS_FAIL_TIMEOUT_ORSET(id, value, secs) \
- cfs_fail_timeout_set(id, value, (secs) * 1000, CFS_FAIL_LOC_ORSET)
+ UNLIKELY_TIMEOUT_SET(id, value, (secs) * 1000, CFS_FAIL_LOC_ORSET)
#define CFS_FAIL_TIMEOUT_RESET(id, value, secs) \
- cfs_fail_timeout_set(id, value, secs * 1000, CFS_FAIL_LOC_RESET)
+ UNLIKELY_TIMEOUT_SET(id, value, secs * 1000, CFS_FAIL_LOC_RESET)
#define CFS_FAIL_TIMEOUT_MS_ORSET(id, value, ms) \
- cfs_fail_timeout_set(id, value, ms, CFS_FAIL_LOC_ORSET)
+ UNLIKELY_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
+/*
+ * 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
- * the first and continues. */
+ * the first and continues.
+ */
static inline void cfs_race(__u32 id)
{
if (CFS_FAIL_PRECHECK(id)) {