1 files changed, 142 insertions, 0 deletions
diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h
new file mode 100644
index 000000000000..c590ca6bfbd9
--- /dev/null
+++ b/include/uapi/linux/blktrace_api.h
@@ -0,0 +1,142 @@
+#ifndef _UAPIBLKTRACE_H
+#define _UAPIBLKTRACE_H
+#include <linux/types.h>
+/*
+ * Trace categories
+ */
+enum blktrace_cat {
+        BLK_TC_READ     = 1 << 0,       /* reads */
+        BLK_TC_WRITE    = 1 << 1,       /* writes */
+        BLK_TC_FLUSH    = 1 << 2,       /* flush */
+        BLK_TC_SYNC     = 1 << 3,       /* sync IO */
+        BLK_TC_SYNCIO   = BLK_TC_SYNC,
+        BLK_TC_QUEUE    = 1 << 4,       /* queueing/merging */
+        BLK_TC_REQUEUE  = 1 << 5,       /* requeueing */
+        BLK_TC_ISSUE    = 1 << 6,       /* issue */
+        BLK_TC_COMPLETE = 1 << 7,       /* completions */
+        BLK_TC_FS       = 1 << 8,       /* fs requests */
+        BLK_TC_PC       = 1 << 9,       /* pc requests */
+        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_DRV_DATA = 1 << 14,      /* binary per-driver data */
+        BLK_TC_FUA      = 1 << 15,      /* fua requests */
+        BLK_TC_END      = 1 << 15,      /* we've run out of bits! */
+};
+#define BLK_TC_SHIFT            (16)
+#define BLK_TC_ACT(act)         ((act) << BLK_TC_SHIFT)
+/*
+ * Basic trace actions
+ */
+enum blktrace_act {
+        __BLK_TA_QUEUE = 1,             /* queued */
+        __BLK_TA_BACKMERGE,             /* back merged to existing rq */
+        __BLK_TA_FRONTMERGE,            /* front merge to existing rq */
+        __BLK_TA_GETRQ,                 /* allocated new request */
+        __BLK_TA_SLEEPRQ,               /* sleeping on rq allocation */
+        __BLK_TA_REQUEUE,               /* request requeued */
+        __BLK_TA_ISSUE,                 /* sent to driver */
+        __BLK_TA_COMPLETE,              /* completed by driver */
+        __BLK_TA_PLUG,                  /* queue was plugged */
+        __BLK_TA_UNPLUG_IO,             /* queue was unplugged by io */
+        __BLK_TA_UNPLUG_TIMER,          /* queue was unplugged by timer */
+        __BLK_TA_INSERT,                /* insert request */
+        __BLK_TA_SPLIT,                 /* bio was split */
+        __BLK_TA_BOUNCE,                /* bio was bounced */
+        __BLK_TA_REMAP,                 /* bio was remapped */
+        __BLK_TA_ABORT,                 /* request aborted */
+        __BLK_TA_DRV_DATA,              /* driver-specific binary data */
+};
+/*
+ * Notify events.
+ */
+enum blktrace_notify {
+        __BLK_TN_PROCESS = 0,           /* establish pid/name mapping */
+        __BLK_TN_TIMESTAMP,             /* include system clock */
+        __BLK_TN_MESSAGE,               /* Character string message */
+};
+/*
+ * Trace actions in full. Additionally, read or write is masked
+ */
+#define BLK_TA_QUEUE            (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_BACKMERGE        (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_FRONTMERGE       (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_GETRQ            (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_SLEEPRQ          (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_REQUEUE          (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
+#define BLK_TA_ISSUE            (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
+#define BLK_TA_COMPLETE         (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
+#define BLK_TA_PLUG             (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_UNPLUG_IO        (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_UNPLUG_TIMER     (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_INSERT           (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
+#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_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA))
+#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))
+#define BLK_TN_MESSAGE          (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY))
+#define BLK_IO_TRACE_MAGIC      0x65617400
+#define BLK_IO_TRACE_VERSION    0x07
+/*
+ * 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 */
+};
+/*
+ * The remap event
+ */
+struct blk_io_trace_remap {
+        __be32 device_from;
+        __be32 device_to;
+        __be64 sector_from;
+};
+enum {
+        Blktrace_setup = 1,
+        Blktrace_running,
+        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;
+};
+#endif /* _UAPIBLKTRACE_H */

diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h new file mode 100644 index 000000000000..c590ca6bfbd9 --- /dev/null +++ b/include/uapi/linux/blktrace_api.h
@@ -0,0 +1,142 @@
	1	#ifndef _UAPIBLKTRACE_H
	2	#define _UAPIBLKTRACE_H
	3
	4	#include <linux/types.h>
	5
	6	/*
	7	* Trace categories
	8	*/
	9	enum blktrace_cat {
	10	BLK_TC_READ = 1 << 0, /* reads */
	11	BLK_TC_WRITE = 1 << 1, /* writes */
	12	BLK_TC_FLUSH = 1 << 2, /* flush */
	13	BLK_TC_SYNC = 1 << 3, /* sync IO */
	14	BLK_TC_SYNCIO = BLK_TC_SYNC,
	15	BLK_TC_QUEUE = 1 << 4, /* queueing/merging */
	16	BLK_TC_REQUEUE = 1 << 5, /* requeueing */
	17	BLK_TC_ISSUE = 1 << 6, /* issue */
	18	BLK_TC_COMPLETE = 1 << 7, /* completions */
	19	BLK_TC_FS = 1 << 8, /* fs requests */
	20	BLK_TC_PC = 1 << 9, /* pc requests */
	21	BLK_TC_NOTIFY = 1 << 10, /* special message */
	22	BLK_TC_AHEAD = 1 << 11, /* readahead */
	23	BLK_TC_META = 1 << 12, /* metadata */
	24	BLK_TC_DISCARD = 1 << 13, /* discard requests */
	25	BLK_TC_DRV_DATA = 1 << 14, /* binary per-driver data */
	26	BLK_TC_FUA = 1 << 15, /* fua requests */
	27
	28	BLK_TC_END = 1 << 15, /* we've run out of bits! */
	29	};
	30
	31	#define BLK_TC_SHIFT (16)
	32	#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
	33
	34	/*
	35	* Basic trace actions
	36	*/
	37	enum blktrace_act {
	38	__BLK_TA_QUEUE = 1, /* queued */
	39	__BLK_TA_BACKMERGE, /* back merged to existing rq */
	40	__BLK_TA_FRONTMERGE, /* front merge to existing rq */
	41	__BLK_TA_GETRQ, /* allocated new request */
	42	__BLK_TA_SLEEPRQ, /* sleeping on rq allocation */
	43	__BLK_TA_REQUEUE, /* request requeued */
	44	__BLK_TA_ISSUE, /* sent to driver */
	45	__BLK_TA_COMPLETE, /* completed by driver */
	46	__BLK_TA_PLUG, /* queue was plugged */
	47	__BLK_TA_UNPLUG_IO, /* queue was unplugged by io */
	48	__BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */
	49	__BLK_TA_INSERT, /* insert request */
	50	__BLK_TA_SPLIT, /* bio was split */
	51	__BLK_TA_BOUNCE, /* bio was bounced */
	52	__BLK_TA_REMAP, /* bio was remapped */
	53	__BLK_TA_ABORT, /* request aborted */
	54	__BLK_TA_DRV_DATA, /* driver-specific binary data */
	55	};
	56
	57	/*
	58	* Notify events.
	59	*/
	60	enum blktrace_notify {
	61	__BLK_TN_PROCESS = 0, /* establish pid/name mapping */
	62	__BLK_TN_TIMESTAMP, /* include system clock */
	63	__BLK_TN_MESSAGE, /* Character string message */
	64	};
	65
	66
	67	/*
	68	* Trace actions in full. Additionally, read or write is masked
	69	*/
	70	#define BLK_TA_QUEUE (__BLK_TA_QUEUE \| BLK_TC_ACT(BLK_TC_QUEUE))
	71	#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE \| BLK_TC_ACT(BLK_TC_QUEUE))
	72	#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE \| BLK_TC_ACT(BLK_TC_QUEUE))
	73	#define BLK_TA_GETRQ (__BLK_TA_GETRQ \| BLK_TC_ACT(BLK_TC_QUEUE))
	74	#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ \| BLK_TC_ACT(BLK_TC_QUEUE))
	75	#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE \| BLK_TC_ACT(BLK_TC_REQUEUE))
	76	#define BLK_TA_ISSUE (__BLK_TA_ISSUE \| BLK_TC_ACT(BLK_TC_ISSUE))
	77	#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE\| BLK_TC_ACT(BLK_TC_COMPLETE))
	78	#define BLK_TA_PLUG (__BLK_TA_PLUG \| BLK_TC_ACT(BLK_TC_QUEUE))
	79	#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO \| BLK_TC_ACT(BLK_TC_QUEUE))
	80	#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER \| BLK_TC_ACT(BLK_TC_QUEUE))
	81	#define BLK_TA_INSERT (__BLK_TA_INSERT \| BLK_TC_ACT(BLK_TC_QUEUE))
	82	#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
	83	#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
	84	#define BLK_TA_REMAP (__BLK_TA_REMAP \| BLK_TC_ACT(BLK_TC_QUEUE))
	85	#define BLK_TA_ABORT (__BLK_TA_ABORT \| BLK_TC_ACT(BLK_TC_QUEUE))
	86	#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA \| BLK_TC_ACT(BLK_TC_DRV_DATA))
	87
	88	#define BLK_TN_PROCESS (__BLK_TN_PROCESS \| BLK_TC_ACT(BLK_TC_NOTIFY))
	89	#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP \| BLK_TC_ACT(BLK_TC_NOTIFY))
	90	#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE \| BLK_TC_ACT(BLK_TC_NOTIFY))
	91
	92	#define BLK_IO_TRACE_MAGIC 0x65617400
	93	#define BLK_IO_TRACE_VERSION 0x07
	94
	95	/*
	96	* The trace itself
	97	*/
	98	struct blk_io_trace {
	99	__u32 magic; /* MAGIC << 8 \| version */
	100	__u32 sequence; /* event number */
	101	__u64 time; /* in microseconds */
	102	__u64 sector; /* disk offset */
	103	__u32 bytes; /* transfer length */
	104	__u32 action; /* what happened */
	105	__u32 pid; /* who did it */
	106	__u32 device; /* device number */
	107	__u32 cpu; /* on what cpu did it happen */
	108	__u16 error; /* completion error */
	109	__u16 pdu_len; /* length of data after this trace */
	110	};
	111
	112	/*
	113	* The remap event
	114	*/
	115	struct blk_io_trace_remap {
	116	__be32 device_from;
	117	__be32 device_to;
	118	__be64 sector_from;
	119	};
	120
	121	enum {
	122	Blktrace_setup = 1,
	123	Blktrace_running,
	124	Blktrace_stopped,
	125	};
	126
	127	#define BLKTRACE_BDEV_SIZE 32
	128
	129	/*
	130	* User setup structure passed with BLKTRACESTART
	131	*/
	132	struct blk_user_trace_setup {
	133	char name[BLKTRACE_BDEV_SIZE]; /* output */
	134	__u16 act_mask; /* input */
	135	__u32 buf_size; /* input */
	136	__u32 buf_nr; /* input */
	137	__u64 start_lba;
	138	__u64 end_lba;
	139	__u32 pid;
	140	};
	141
	142	#endif /* _UAPIBLKTRACE_H */