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Commit e572ec7e authored by Al Viro's avatar Al Viro
Browse files

[PATCH] fix rmmod problems with elevator attributes, clean them up

parent 3d1ab40f

block/as-iosched.c

+22 −49
Original line number Diff line number Diff line
@@ -1725,7 +1725,7 @@ as_var_store(unsigned long *var, const char *page, size_t count) 
	return count;

}



static ssize_t as_est_show(elevator_t *e, char *page)

static ssize_t est_time_show(elevator_t *e, char *page)

{

	struct as_data *ad = e->elevator_data;

	int pos = 0;
@@ -1748,11 +1748,11 @@ static ssize_t __FUNC(elevator_t *e, char *page) \ 
	struct as_data *ad = e->elevator_data;			\

	return as_var_show(jiffies_to_msecs((__VAR)), (page));	\

}

SHOW_FUNCTION(as_readexpire_show, ad->fifo_expire[REQ_SYNC]);

SHOW_FUNCTION(as_writeexpire_show, ad->fifo_expire[REQ_ASYNC]);

SHOW_FUNCTION(as_anticexpire_show, ad->antic_expire);

SHOW_FUNCTION(as_read_batchexpire_show, ad->batch_expire[REQ_SYNC]);

SHOW_FUNCTION(as_write_batchexpire_show, ad->batch_expire[REQ_ASYNC]);

SHOW_FUNCTION(as_read_expire_show, ad->fifo_expire[REQ_SYNC]);

SHOW_FUNCTION(as_write_expire_show, ad->fifo_expire[REQ_ASYNC]);

SHOW_FUNCTION(as_antic_expire_show, ad->antic_expire);

SHOW_FUNCTION(as_read_batch_expire_show, ad->batch_expire[REQ_SYNC]);

SHOW_FUNCTION(as_write_batch_expire_show, ad->batch_expire[REQ_ASYNC]);

#undef SHOW_FUNCTION



#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX)				\
@@ -1767,53 +1767,26 @@ static ssize_t __FUNC(elevator_t *e, const char *page, size_t count) \ 
	*(__PTR) = msecs_to_jiffies(*(__PTR));				\

	return ret;							\

}

STORE_FUNCTION(as_readexpire_store, &ad->fifo_expire[REQ_SYNC], 0, INT_MAX);

STORE_FUNCTION(as_writeexpire_store, &ad->fifo_expire[REQ_ASYNC], 0, INT_MAX);

STORE_FUNCTION(as_anticexpire_store, &ad->antic_expire, 0, INT_MAX);

STORE_FUNCTION(as_read_batchexpire_store,

STORE_FUNCTION(as_read_expire_store, &ad->fifo_expire[REQ_SYNC], 0, INT_MAX);

STORE_FUNCTION(as_write_expire_store, &ad->fifo_expire[REQ_ASYNC], 0, INT_MAX);

STORE_FUNCTION(as_antic_expire_store, &ad->antic_expire, 0, INT_MAX);

STORE_FUNCTION(as_read_batch_expire_store,

			&ad->batch_expire[REQ_SYNC], 0, INT_MAX);

STORE_FUNCTION(as_write_batchexpire_store,

STORE_FUNCTION(as_write_batch_expire_store,

			&ad->batch_expire[REQ_ASYNC], 0, INT_MAX);

#undef STORE_FUNCTION



static struct elv_fs_entry as_est_entry = {

	.attr = {.name = "est_time", .mode = S_IRUGO },

	.show = as_est_show,

};

static struct elv_fs_entry as_readexpire_entry = {

	.attr = {.name = "read_expire", .mode = S_IRUGO | S_IWUSR },

	.show = as_readexpire_show,

	.store = as_readexpire_store,

};

static struct elv_fs_entry as_writeexpire_entry = {

	.attr = {.name = "write_expire", .mode = S_IRUGO | S_IWUSR },

	.show = as_writeexpire_show,

	.store = as_writeexpire_store,

};

static struct elv_fs_entry as_anticexpire_entry = {

	.attr = {.name = "antic_expire", .mode = S_IRUGO | S_IWUSR },

	.show = as_anticexpire_show,

	.store = as_anticexpire_store,

};

static struct elv_fs_entry as_read_batchexpire_entry = {

	.attr = {.name = "read_batch_expire", .mode = S_IRUGO | S_IWUSR },

	.show = as_read_batchexpire_show,

	.store = as_read_batchexpire_store,

};

static struct elv_fs_entry as_write_batchexpire_entry = {

	.attr = {.name = "write_batch_expire", .mode = S_IRUGO | S_IWUSR },

	.show = as_write_batchexpire_show,

	.store = as_write_batchexpire_store,

};



static struct attribute *as_attrs[] = {

	&as_est_entry.attr,

	&as_readexpire_entry.attr,

	&as_writeexpire_entry.attr,

	&as_anticexpire_entry.attr,

	&as_read_batchexpire_entry.attr,

	&as_write_batchexpire_entry.attr,

	NULL,

#define AS_ATTR(name) \

	__ATTR(name, S_IRUGO|S_IWUSR, as_##name##_show, as_##name##_store)



static struct elv_fs_entry as_attrs[] = {

	__ATTR_RO(est_time),

	AS_ATTR(read_expire),

	AS_ATTR(write_expire),

	AS_ATTR(antic_expire),

	AS_ATTR(read_batch_expire),

	AS_ATTR(write_batch_expire),

	__ATTR_NULL

};



static struct elevator_type iosched_as = {

block/cfq-iosched.c

+20 −73
Original line number Diff line number Diff line
@@ -2304,8 +2304,8 @@ SHOW_FUNCTION(cfq_quantum_show, cfqd->cfq_quantum, 0); 
SHOW_FUNCTION(cfq_queued_show, cfqd->cfq_queued, 0);

SHOW_FUNCTION(cfq_fifo_expire_sync_show, cfqd->cfq_fifo_expire[1], 1);

SHOW_FUNCTION(cfq_fifo_expire_async_show, cfqd->cfq_fifo_expire[0], 1);

SHOW_FUNCTION(cfq_back_max_show, cfqd->cfq_back_max, 0);

SHOW_FUNCTION(cfq_back_penalty_show, cfqd->cfq_back_penalty, 0);

SHOW_FUNCTION(cfq_back_seek_max_show, cfqd->cfq_back_max, 0);

SHOW_FUNCTION(cfq_back_seek_penalty_show, cfqd->cfq_back_penalty, 0);

SHOW_FUNCTION(cfq_slice_idle_show, cfqd->cfq_slice_idle, 1);

SHOW_FUNCTION(cfq_slice_sync_show, cfqd->cfq_slice[1], 1);

SHOW_FUNCTION(cfq_slice_async_show, cfqd->cfq_slice[0], 1);
@@ -2333,8 +2333,8 @@ STORE_FUNCTION(cfq_quantum_store, &cfqd->cfq_quantum, 1, UINT_MAX, 0); 
STORE_FUNCTION(cfq_queued_store, &cfqd->cfq_queued, 1, UINT_MAX, 0);

STORE_FUNCTION(cfq_fifo_expire_sync_store, &cfqd->cfq_fifo_expire[1], 1, UINT_MAX, 1);

STORE_FUNCTION(cfq_fifo_expire_async_store, &cfqd->cfq_fifo_expire[0], 1, UINT_MAX, 1);

STORE_FUNCTION(cfq_back_max_store, &cfqd->cfq_back_max, 0, UINT_MAX, 0);

STORE_FUNCTION(cfq_back_penalty_store, &cfqd->cfq_back_penalty, 1, UINT_MAX, 0);

STORE_FUNCTION(cfq_back_seek_max_store, &cfqd->cfq_back_max, 0, UINT_MAX, 0);

STORE_FUNCTION(cfq_back_seek_penalty_store, &cfqd->cfq_back_penalty, 1, UINT_MAX, 0);

STORE_FUNCTION(cfq_slice_idle_store, &cfqd->cfq_slice_idle, 0, UINT_MAX, 1);

STORE_FUNCTION(cfq_slice_sync_store, &cfqd->cfq_slice[1], 1, UINT_MAX, 1);

STORE_FUNCTION(cfq_slice_async_store, &cfqd->cfq_slice[0], 1, UINT_MAX, 1);
@@ -2342,75 +2342,22 @@ STORE_FUNCTION(cfq_slice_async_rq_store, &cfqd->cfq_slice_async_rq, 1, UINT_MAX, 
STORE_FUNCTION(cfq_max_depth_store, &cfqd->cfq_max_depth, 1, UINT_MAX, 0);

#undef STORE_FUNCTION



static struct elv_fs_entry cfq_quantum_entry = {

	.attr = {.name = "quantum", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_quantum_show,

	.store = cfq_quantum_store,

};

static struct elv_fs_entry cfq_queued_entry = {

	.attr = {.name = "queued", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_queued_show,

	.store = cfq_queued_store,

};

static struct elv_fs_entry cfq_fifo_expire_sync_entry = {

	.attr = {.name = "fifo_expire_sync", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_fifo_expire_sync_show,

	.store = cfq_fifo_expire_sync_store,

};

static struct elv_fs_entry cfq_fifo_expire_async_entry = {

	.attr = {.name = "fifo_expire_async", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_fifo_expire_async_show,

	.store = cfq_fifo_expire_async_store,

};

static struct elv_fs_entry cfq_back_max_entry = {

	.attr = {.name = "back_seek_max", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_back_max_show,

	.store = cfq_back_max_store,

};

static struct elv_fs_entry cfq_back_penalty_entry = {

	.attr = {.name = "back_seek_penalty", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_back_penalty_show,

	.store = cfq_back_penalty_store,

};

static struct elv_fs_entry cfq_slice_sync_entry = {

	.attr = {.name = "slice_sync", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_slice_sync_show,

	.store = cfq_slice_sync_store,

};

static struct elv_fs_entry cfq_slice_async_entry = {

	.attr = {.name = "slice_async", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_slice_async_show,

	.store = cfq_slice_async_store,

};

static struct elv_fs_entry cfq_slice_async_rq_entry = {

	.attr = {.name = "slice_async_rq", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_slice_async_rq_show,

	.store = cfq_slice_async_rq_store,

};

static struct elv_fs_entry cfq_slice_idle_entry = {

	.attr = {.name = "slice_idle", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_slice_idle_show,

	.store = cfq_slice_idle_store,

};

static struct elv_fs_entry cfq_max_depth_entry = {

	.attr = {.name = "max_depth", .mode = S_IRUGO | S_IWUSR },

	.show = cfq_max_depth_show,

	.store = cfq_max_depth_store,

};



static struct attribute *cfq_attrs[] = {

	&cfq_quantum_entry.attr,

	&cfq_queued_entry.attr,

	&cfq_fifo_expire_sync_entry.attr,

	&cfq_fifo_expire_async_entry.attr,

	&cfq_back_max_entry.attr,

	&cfq_back_penalty_entry.attr,

	&cfq_slice_sync_entry.attr,

	&cfq_slice_async_entry.attr,

	&cfq_slice_async_rq_entry.attr,

	&cfq_slice_idle_entry.attr,

	&cfq_max_depth_entry.attr,

	NULL,

#define CFQ_ATTR(name) \

	__ATTR(name, S_IRUGO|S_IWUSR, cfq_##name##_show, cfq_##name##_store)



static struct elv_fs_entry cfq_attrs[] = {

	CFQ_ATTR(quantum),

	CFQ_ATTR(queued),

	CFQ_ATTR(fifo_expire_sync),

	CFQ_ATTR(fifo_expire_async),

	CFQ_ATTR(back_seek_max),

	CFQ_ATTR(back_seek_penalty),

	CFQ_ATTR(slice_sync),

	CFQ_ATTR(slice_async),

	CFQ_ATTR(slice_async_rq),

	CFQ_ATTR(slice_idle),

	CFQ_ATTR(max_depth),

	__ATTR_NULL

};



static struct elevator_type iosched_cfq = {

block/deadline-iosched.c

+21 −43
Original line number Diff line number Diff line
@@ -719,11 +719,11 @@ static ssize_t __FUNC(elevator_t *e, char *page) \ 
		__data = jiffies_to_msecs(__data);			\

	return deadline_var_show(__data, (page));			\

}

SHOW_FUNCTION(deadline_readexpire_show, dd->fifo_expire[READ], 1);

SHOW_FUNCTION(deadline_writeexpire_show, dd->fifo_expire[WRITE], 1);

SHOW_FUNCTION(deadline_writesstarved_show, dd->writes_starved, 0);

SHOW_FUNCTION(deadline_frontmerges_show, dd->front_merges, 0);

SHOW_FUNCTION(deadline_fifobatch_show, dd->fifo_batch, 0);

SHOW_FUNCTION(deadline_read_expire_show, dd->fifo_expire[READ], 1);

SHOW_FUNCTION(deadline_write_expire_show, dd->fifo_expire[WRITE], 1);

SHOW_FUNCTION(deadline_writes_starved_show, dd->writes_starved, 0);

SHOW_FUNCTION(deadline_front_merges_show, dd->front_merges, 0);

SHOW_FUNCTION(deadline_fifo_batch_show, dd->fifo_batch, 0);

#undef SHOW_FUNCTION



#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV)			\
@@ -742,46 +742,24 @@ static ssize_t __FUNC(elevator_t *e, const char *page, size_t count) \ 
		*(__PTR) = __data;					\

	return ret;							\

}

STORE_FUNCTION(deadline_readexpire_store, &dd->fifo_expire[READ], 0, INT_MAX, 1);

STORE_FUNCTION(deadline_writeexpire_store, &dd->fifo_expire[WRITE], 0, INT_MAX, 1);

STORE_FUNCTION(deadline_writesstarved_store, &dd->writes_starved, INT_MIN, INT_MAX, 0);

STORE_FUNCTION(deadline_frontmerges_store, &dd->front_merges, 0, 1, 0);

STORE_FUNCTION(deadline_fifobatch_store, &dd->fifo_batch, 0, INT_MAX, 0);

STORE_FUNCTION(deadline_read_expire_store, &dd->fifo_expire[READ], 0, INT_MAX, 1);

STORE_FUNCTION(deadline_write_expire_store, &dd->fifo_expire[WRITE], 0, INT_MAX, 1);

STORE_FUNCTION(deadline_writes_starved_store, &dd->writes_starved, INT_MIN, INT_MAX, 0);

STORE_FUNCTION(deadline_front_merges_store, &dd->front_merges, 0, 1, 0);

STORE_FUNCTION(deadline_fifo_batch_store, &dd->fifo_batch, 0, INT_MAX, 0);

#undef STORE_FUNCTION



static struct elv_fs_entry deadline_readexpire_entry = {

	.attr = {.name = "read_expire", .mode = S_IRUGO | S_IWUSR },

	.show = deadline_readexpire_show,

	.store = deadline_readexpire_store,

};

static struct elv_fs_entry deadline_writeexpire_entry = {

	.attr = {.name = "write_expire", .mode = S_IRUGO | S_IWUSR },

	.show = deadline_writeexpire_show,

	.store = deadline_writeexpire_store,

};

static struct elv_fs_entry deadline_writesstarved_entry = {

	.attr = {.name = "writes_starved", .mode = S_IRUGO | S_IWUSR },

	.show = deadline_writesstarved_show,

	.store = deadline_writesstarved_store,

};

static struct elv_fs_entry deadline_frontmerges_entry = {

	.attr = {.name = "front_merges", .mode = S_IRUGO | S_IWUSR },

	.show = deadline_frontmerges_show,

	.store = deadline_frontmerges_store,

};

static struct elv_fs_entry deadline_fifobatch_entry = {

	.attr = {.name = "fifo_batch", .mode = S_IRUGO | S_IWUSR },

	.show = deadline_fifobatch_show,

	.store = deadline_fifobatch_store,

};



static struct attribute *deadline_attrs[] = {

	&deadline_readexpire_entry.attr,

	&deadline_writeexpire_entry.attr,

	&deadline_writesstarved_entry.attr,

	&deadline_frontmerges_entry.attr,

	&deadline_fifobatch_entry.attr,

	NULL,

#define DD_ATTR(name) \

	__ATTR(name, S_IRUGO|S_IWUSR, deadline_##name##_show, \

				      deadline_##name##_store)



static struct elv_fs_entry deadline_attrs[] = {

	DD_ATTR(read_expire),

	DD_ATTR(write_expire),

	DD_ATTR(writes_starved),

	DD_ATTR(front_merges),

	DD_ATTR(fifo_batch),

	__ATTR_NULL

};



static struct elevator_type iosched_deadline = {

block/elevator.c

+4 −3
Original line number Diff line number Diff line
@@ -699,11 +699,12 @@ int elv_register_queue(struct request_queue *q) 


	error = kobject_add(&e->kobj);

	if (!error) {

		struct attribute **attr = e->elevator_type->elevator_attrs;

		struct elv_fs_entry *attr = e->elevator_type->elevator_attrs;

		if (attr) {

			while (*attr) {

				if (sysfs_create_file(&e->kobj,*attr++))

			while (attr->attr.name) {

				if (sysfs_create_file(&e->kobj, &attr->attr))

					break;

				attr++;

			}

		}

		kobject_uevent(&e->kobj, KOBJ_ADD);

include/linux/elevator.h

+7 −7
Original line number Diff line number Diff line
@@ -53,6 +53,12 @@ struct elevator_ops 


#define ELV_NAME_MAX	(16)



struct elv_fs_entry {

	struct attribute attr;

	ssize_t (*show)(elevator_t *, char *);

	ssize_t (*store)(elevator_t *, const char *, size_t);

};



/*

 * identifies an elevator type, such as AS or deadline

 */
@@ -61,7 +67,7 @@ struct elevator_type 
	struct list_head list;

	struct elevator_ops ops;

	struct elevator_type *elevator_type;

	struct attribute **elevator_attrs;

	struct elv_fs_entry *elevator_attrs;

	char elevator_name[ELV_NAME_MAX];

	struct module *elevator_owner;

};
@@ -142,12 +148,6 @@ enum { 
	ELV_MQUEUE_MUST,

};



struct elv_fs_entry {

	struct attribute attr;

	ssize_t (*show)(elevator_t *, char *);

	ssize_t (*store)(elevator_t *, const char *, size_t);

};



#define rq_end_sector(rq)	((rq)->sector + (rq)->nr_sectors)



#endif