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yaml
---
r: 110553
b: refs/heads/master
c: c0ddffa
h: refs/heads/master
i:
  110551: 86e5770
v: v3
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Sven Schuetz authored and Jens Axboe committed Oct 9, 2008
1 parent b768ffd commit 9c857d7
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Showing 3 changed files with 34 additions and 27 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: e3ba9ae58a5599226e3976b29c8093041ae7c332
refs/heads/master: c0ddffa84a7d12da9943a94d04dadbfb1883b904
1 change: 1 addition & 0 deletions trunk/include/linux/Kbuild
Original file line number Diff line number Diff line change
Expand Up @@ -180,6 +180,7 @@ unifdef-y += audit.h
unifdef-y += auto_fs.h
unifdef-y += auxvec.h
unifdef-y += binfmts.h
unifdef-y += blktrace_api.h
unifdef-y += capability.h
unifdef-y += capi.h
unifdef-y += cciss_ioctl.h
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58 changes: 32 additions & 26 deletions trunk/include/linux/blktrace_api.h
Original file line number Diff line number Diff line change
@@ -1,8 +1,10 @@
#ifndef BLKTRACE_H
#define BLKTRACE_H

#ifdef __KERNEL__
#include <linux/blkdev.h>
#include <linux/relay.h>
#endif

/*
* Trace categories
Expand Down Expand Up @@ -92,17 +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 */
};

/*
Expand All @@ -120,6 +122,25 @@ enum {
Blktrace_stopped,
};

/*
* User setup structure passed with BLKTRACESTART
*/
struct blk_user_trace_setup {
#ifdef __KERNEL__
char name[BDEVNAME_SIZE]; /* output */
#else
char name[32]; /* output */
#endif
__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;
Expand All @@ -136,21 +157,6 @@ 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 *);
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