diff options
Diffstat (limited to 'include/linux/blktrace_api.h')
| -rw-r--r-- | include/linux/blktrace_api.h | 62 |
1 files changed, 36 insertions, 26 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index d084b8d227a..3a31eb50616 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -1,8 +1,10 @@ #ifndef BLKTRACE_H #define BLKTRACE_H +#ifdef __KERNEL__ #include <linux/blkdev.h> #include <linux/relay.h> +#endif /* * Trace categories @@ -21,6 +23,7 @@ enum blktrace_cat { BLK_TC_NOTIFY = 1 << 10, /* special message */ BLK_TC_AHEAD = 1 << 11, /* readahead */ BLK_TC_META = 1 << 12, /* metadata */ + BLK_TC_DISCARD = 1 << 13, /* discard requests */ BLK_TC_END = 1 << 15, /* only 16-bits, reminder */ }; @@ -47,6 +50,7 @@ enum blktrace_act { __BLK_TA_SPLIT, /* bio was split */ __BLK_TA_BOUNCE, /* bio was bounced */ __BLK_TA_REMAP, /* bio was remapped */ + __BLK_TA_ABORT, /* request aborted */ }; /* @@ -77,6 +81,7 @@ enum blktrace_notify { #define BLK_TA_SPLIT (__BLK_TA_SPLIT) #define BLK_TA_BOUNCE (__BLK_TA_BOUNCE) #define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE)) +#define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY)) #define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY)) @@ -89,17 +94,17 @@ enum blktrace_notify { * The trace itself */ struct blk_io_trace { - u32 magic; /* MAGIC << 8 | version */ - u32 sequence; /* event number */ - u64 time; /* in microseconds */ - u64 sector; /* disk offset */ - u32 bytes; /* transfer length */ - u32 action; /* what happened */ - u32 pid; /* who did it */ - u32 device; /* device number */ - u32 cpu; /* on what cpu did it happen */ - u16 error; /* completion error */ - u16 pdu_len; /* length of data after this trace */ + __u32 magic; /* MAGIC << 8 | version */ + __u32 sequence; /* event number */ + __u64 time; /* in microseconds */ + __u64 sector; /* disk offset */ + __u32 bytes; /* transfer length */ + __u32 action; /* what happened */ + __u32 pid; /* who did it */ + __u32 device; /* device number */ + __u32 cpu; /* on what cpu did it happen */ + __u16 error; /* completion error */ + __u16 pdu_len; /* length of data after this trace */ }; /* @@ -117,6 +122,23 @@ enum { Blktrace_stopped, }; +#define BLKTRACE_BDEV_SIZE 32 + +/* + * User setup structure passed with BLKTRACESTART + */ +struct blk_user_trace_setup { + char name[BLKTRACE_BDEV_SIZE]; /* output */ + __u16 act_mask; /* input */ + __u32 buf_size; /* input */ + __u32 buf_nr; /* input */ + __u64 start_lba; + __u64 end_lba; + __u32 pid; +}; + +#ifdef __KERNEL__ +#if defined(CONFIG_BLK_DEV_IO_TRACE) struct blk_trace { int trace_state; struct rchan *rchan; @@ -133,21 +155,6 @@ struct blk_trace { atomic_t dropped; }; -/* - * User setup structure passed with BLKTRACESTART - */ -struct blk_user_trace_setup { - char name[BDEVNAME_SIZE]; /* output */ - u16 act_mask; /* input */ - u32 buf_size; /* input */ - u32 buf_nr; /* input */ - u64 start_lba; - u64 end_lba; - u32 pid; -}; - -#ifdef __KERNEL__ -#if defined(CONFIG_BLK_DEV_IO_TRACE) extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *); extern void blk_trace_shutdown(struct request_queue *); extern void __blk_add_trace(struct blk_trace *, sector_t, int, int, u32, int, int, void *); @@ -195,6 +202,9 @@ static inline void blk_add_trace_rq(struct request_queue *q, struct request *rq, if (likely(!bt)) return; + if (blk_discard_rq(rq)) + rw |= (1 << BIO_RW_DISCARD); + if (blk_pc_request(rq)) { what |= BLK_TC_ACT(BLK_TC_PC); __blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors, sizeof(rq->cmd), rq->cmd); |