mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 06:34:11 +08:00
1b9a9ab78b
Have blktrace use the req/bio op accessor to get the REQ_OP. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
126 lines
3.6 KiB
C
126 lines
3.6 KiB
C
#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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#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;
|
|
}
|
|
|
|
extern void blk_dump_cmd(char *buf, struct request *rq);
|
|
extern void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes);
|
|
|
|
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
|
|
|
|
#endif
|