Release 4.7 include/linux/blktrace_api.h
#ifndef BLKTRACE_H
#define BLKTRACE_H
#include <linux/blkdev.h>
#include <linux/relay.h>
#include <linux/compat.h>
#include <uapi/linux/blktrace_api.h>
#include <linux/list.h>
#if defined(CONFIG_BLK_DEV_IO_TRACE)
#include <linux/sysfs.h>
struct blk_trace {
int trace_state;
struct rchan *rchan;
unsigned long __percpu *sequence;
unsigned char __percpu *msg_data;
u16 act_mask;
u64 start_lba;
u64 end_lba;
u32 pid;
u32 dev;
struct dentry *dir;
struct dentry *dropped_file;
struct dentry *msg_file;
struct list_head running_list;
atomic_t dropped;
};
extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
extern void blk_trace_shutdown(struct request_queue *);
extern int do_blk_trace_setup(struct request_queue *q, char *name,
dev_t dev, struct block_device *bdev,
struct blk_user_trace_setup *buts);
extern __printf(2, 3)
void __trace_note_message(struct blk_trace *, const char *fmt, ...);
/**
* blk_add_trace_msg - Add a (simple) message to the blktrace stream
* @q: queue the io is for
* @fmt: format to print message in
* args... Variable argument list for format
*
* Description:
* Records a (simple) message onto the blktrace stream.
*
* NOTE: BLK_TN_MAX_MSG characters are output at most.
* NOTE: Can not use 'static inline' due to presence of var args...
*
**/
#define blk_add_trace_msg(q, fmt, ...) \
do { \
struct blk_trace *bt = (q)->blk_trace; \
if (unlikely(bt)) \
__trace_note_message(bt, fmt, ##__VA_ARGS__); \
} while (0)
#define BLK_TN_MAX_MSG 128
static inline bool blk_trace_note_message_enabled(struct request_queue *q)
{
struct blk_trace *bt = q->blk_trace;
if (likely(!bt))
return false;
return bt->act_mask & BLK_TC_NOTIFY;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| shaohua li | shaohua li | 39 | 100.00% | 1 | 100.00% |
| Total | 39 | 100.00% | 1 | 100.00% |
extern void blk_add_driver_data(struct request_queue *q, struct request *rq,
void *data, size_t len);
extern int blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
struct block_device *bdev,
char __user *arg);
extern int blk_trace_startstop(struct request_queue *q, int start);
extern int blk_trace_remove(struct request_queue *q);
extern void blk_trace_remove_sysfs(struct device *dev);
extern int blk_trace_init_sysfs(struct device *dev);
extern struct attribute_group blk_trace_attr_group;
#else /* !CONFIG_BLK_DEV_IO_TRACE */
# define blk_trace_ioctl(bdev, cmd, arg) (-ENOTTY)
# define blk_trace_shutdown(q) do { } while (0)
# define do_blk_trace_setup(q, name, dev, bdev, buts) (-ENOTTY)
# define blk_add_driver_data(q, rq, data, len) do {} while (0)
# define blk_trace_setup(q, name, dev, bdev, arg) (-ENOTTY)
# define blk_trace_startstop(q, start) (-ENOTTY)
# define blk_trace_remove(q) (-ENOTTY)
# define blk_add_trace_msg(q, fmt, ...) do { } while (0)
# define blk_trace_remove_sysfs(dev) do { } while (0)
# define blk_trace_note_message_enabled(q) (false)
static inline int blk_trace_init_sysfs(struct device *dev)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| li zefan | li zefan | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
#endif /* CONFIG_BLK_DEV_IO_TRACE */
#ifdef CONFIG_COMPAT
struct compat_blk_user_trace_setup {
char name[BLKTRACE_BDEV_SIZE];
u16 act_mask;
u32 buf_size;
u32 buf_nr;
compat_u64 start_lba;
compat_u64 end_lba;
u32 pid;
};
#define BLKTRACESETUP32 _IOWR(0x12, 115, struct compat_blk_user_trace_setup)
#endif
#if defined(CONFIG_EVENT_TRACING) && defined(CONFIG_BLOCK)
static inline int blk_cmd_buf_len(struct request *rq)
{
return (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? rq->cmd_len * 3 : 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| li zefan | li zefan | 23 | 79.31% | 1 | 50.00% |
| christoph hellwig | christoph hellwig | 6 | 20.69% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
extern void blk_dump_cmd(char *buf, struct request *rq);
extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jens axboe | jens axboe | 122 | 22.18% | 3 | 10.71% |
| li zefan | li zefan | 91 | 16.55% | 3 | 10.71% |
| christof schmitt | christof schmitt | 73 | 13.27% | 1 | 3.57% |
| alan d. brunelle | alan d. brunelle | 47 | 8.55% | 2 | 7.14% |
| shaohua li | shaohua li | 46 | 8.36% | 1 | 3.57% |
| stephen rothwell | stephen rothwell | 37 | 6.73% | 1 | 3.57% |
| stefan raspl | stefan raspl | 33 | 6.00% | 1 | 3.57% |
| arnd bergmann | arnd bergmann | 18 | 3.27% | 2 | 7.14% |
| zdenek kabelac | zdenek kabelac | 17 | 3.09% | 1 | 3.57% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 14 | 2.55% | 2 | 7.14% |
| shawn du | shawn du | 14 | 2.55% | 1 | 3.57% |
| jan kara | jan kara | 7 | 1.27% | 1 | 3.57% |
| sven schuetz | sven schuetz | 6 | 1.09% | 1 | 3.57% |
| christoph hellwig | christoph hellwig | 6 | 1.09% | 1 | 3.57% |
| martin k. petersen | martin k. petersen | 6 | 1.09% | 1 | 3.57% |
| david howells | david howells | 4 | 0.73% | 1 | 3.57% |
| joe perches | joe perches | 4 | 0.73% | 2 | 7.14% |
| tejun heo | tejun heo | 2 | 0.36% | 1 | 3.57% |
| jaswinder singh rajput | jaswinder singh rajput | 2 | 0.36% | 1 | 3.57% |
| chen gang | chen gang | 1 | 0.18% | 1 | 3.57% |
| Total | 550 | 100.00% | 28 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.