X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=blktrace_api.h;h=b22221828f41c4509dacc2753cd664bf0120797e;hb=a61c06774d03fb768fa9fb021e94599822848c8a;hp=75612efe2499d44d388ab79d32be68b511ec8142;hpb=b704c63702e67ec266b862b55b71c6f7baad91e4;p=blktrace.git

diff --git a/blktrace_api.h b/blktrace_api.h
index 75612ef..b222218 100644
--- a/blktrace_api.h
+++ b/blktrace_api.h
@@ -9,16 +9,22 @@
 enum {
 	BLK_TC_READ	= 1 << 0,	/* reads */
 	BLK_TC_WRITE	= 1 << 1,	/* writes */
-	BLK_TC_BARRIER	= 1 << 2,	/* barrier */
-	BLK_TC_SYNC	= 1 << 3,	/* barrier */
+	BLK_TC_FLUSH	= 1 << 2,	/* flush */
+	BLK_TC_SYNC	= 1 << 3,	/* 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 driver data */
+	BLK_TC_FUA	= 1 << 15,	/* fua requests */
 
-	BLK_TC_END	= 1 << 15,	/* only 16-bits, reminder */
+	BLK_TC_END	= 1 << 15,	/* we've run out of bits! */
 };
 
 #define BLK_TC_SHIFT		(16)
@@ -36,6 +42,24 @@ enum {
 	__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,		/* binary driver 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 */
 };
 
 /*
@@ -49,9 +73,22 @@ enum {
 #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	0x04
+#define BLK_IO_TRACE_VERSION	0x07
 
 /*
  * The trace itself
@@ -59,15 +96,24 @@ enum {
 struct blk_io_trace {
 	__u32 magic;		/* MAGIC << 8 | version */
 	__u32 sequence;		/* event number */
-	__u64 time;		/* in microseconds */
+	__u64 time;		/* in nanoseconds */
 	__u64 sector;		/* disk offset */
 	__u32 bytes;		/* transfer length */
 	__u32 action;		/* what happened */
 	__u32 pid;		/* who did it */
+	__u32 device;		/* device identifier (dev_t) */
 	__u32 cpu;		/* on what cpu did it happen */
 	__u16 error;		/* completion error */
 	__u16 pdu_len;		/* length of data after this trace */
-	char  comm[16];		/* task command name (TASK_COMM_LEN) */
+};
+
+/*
+ * The remap event
+ */
+struct blk_io_trace_remap {
+	__u32 device_from;
+	__u32 device_to;
+	__u64 sector_from;
 };
 
 /*
@@ -78,9 +124,14 @@ struct blk_user_trace_setup {
 	__u16 act_mask;			/* input */
 	__u32 buf_size;			/* input */
 	__u32 buf_nr;			/* input */
+	__u64 start_lba;
+	__u64 end_lba;
+	__u32 pid;
 };
 
-#define BLKSTARTTRACE _IOWR(0x12,115,struct blk_user_trace_setup)
-#define BLKSTOPTRACE _IO(0x12,116)
+#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
+#define BLKTRACESTART _IO(0x12,116)
+#define BLKTRACESTOP _IO(0x12,117)
+#define BLKTRACETEARDOWN _IO(0x12,118)
 
 #endif