blk-sysfs.c File Reference

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/blktrace_api.h>
#include "blk.h"
#include "blk-cgroup.h"

Go to the source code of this file.

Data Structures
struct	queue_sysfs_entry

Macros
#define	QUEUE_SYSFS_BIT_FNS(name, flag, neg)
#define	to_queue(atr)   container_of((atr), struct queue_sysfs_entry, attr)

Functions
	QUEUE_SYSFS_BIT_FNS (nonrot, NONROT, 1)
	QUEUE_SYSFS_BIT_FNS (random, ADD_RANDOM, 0)
	QUEUE_SYSFS_BIT_FNS (iostats, IO_STAT, 0)
int	blk_register_queue (struct gendisk *disk)
void	blk_unregister_queue (struct gendisk *disk)

Variables
struct kobj_type	blk_queue_ktype

Macro Definition Documentation

#define QUEUE_SYSFS_BIT_FNS	(		name,
			flag,
			neg
	)

Value:

static ssize_t                              \
queue_show_##name(struct request_queue *q, char *page)          \
{                                   \
    int bit;                            \
    bit = test_bit(QUEUE_FLAG_##flag, &q->queue_flags);     \
    return queue_var_show(neg ? !bit : bit, page);          \
}                                   \
static ssize_t                              \
queue_store_##name(struct request_queue *q, const char *page, size_t count) \
{                                   \
    unsigned long val;                      \
	ssize_t ret;                           \
    ret = queue_var_store(&val, page, count);           \
    if (neg)                            \
        val = !val;                     \
                                    \
    spin_lock_irq(q->queue_lock);                   \
    if (val)                            \
        queue_flag_set(QUEUE_FLAG_##flag, q);           \
    else                                \
        queue_flag_clear(QUEUE_FLAG_##flag, q);         \
    spin_unlock_irq(q->queue_lock);                 \
    return ret;                         \
}

Definition at line 218 of file blk-sysfs.c.

#define to_queue

(

atr

)

container_of((atr), struct queue_sysfs_entry, attr)

Definition at line 456 of file blk-sysfs.c.

Function Documentation

int blk_register_queue

(

struct gendisk *

disk

)

Definition at line 555 of file blk-sysfs.c.

void blk_unregister_queue

(

struct gendisk *

disk

)

Definition at line 597 of file blk-sysfs.c.

QUEUE_SYSFS_BIT_FNS	(	nonrot	,
		NONROT	,
		1
	)

QUEUE_SYSFS_BIT_FNS	(	random	,
		ADD_RANDOM	,
		0
	)

QUEUE_SYSFS_BIT_FNS	(	iostats	,
		IO_STAT	,
		0
	)

Variable Documentation

struct kobj_type blk_queue_ktype

Initial value:

= {
    .sysfs_ops  = &queue_sysfs_ops,
    .default_attrs  = default_attrs,
    .release    = blk_release_queue,
}

Definition at line 549 of file blk-sysfs.c.