Merge commit '5bc66170dc486556a1e36fd384463536573f4b82' into x86/urgent

From Borislav Petkov <bp@amd64.org>:

Below is a RAS fix which reverts the addition of a sysfs attribute
which we agreed is not needed, post-factum. And this should go in now
because that sysfs attribute is going to end up in 3.7 otherwise and
thus exposed to userspace; removing it then would be a lot harder.

This is done as a merge rather than a simple patch/cherry-pick since
the baseline for this patch was not in the previous x86/urgent.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 1 insertions, 141 deletions

diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 4d1a0748eaf..7c2e030e72f 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -1,150 +1,11 @@
 #ifndef BLKTRACE_H
 #define BLKTRACE_H
 
-#include <linux/types.h>
-#ifdef __KERNEL__
 #include <linux/blkdev.h>
 #include <linux/relay.h>
 #include <linux/compat.h>
-#endif
-
-/*
- * 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;
-};
+#include <uapi/linux/blktrace_api.h>
 
-#ifdef __KERNEL__
 #if defined(CONFIG_BLK_DEV_IO_TRACE)
 
 #include <linux/sysfs.h>
@@ -250,5 +111,4 @@ extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
 
 #endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
 
-#endif /* __KERNEL__ */
 #endif