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Commit 963b72fc authored by Jens Axboe's avatar Jens Axboe
Browse files

cfq-iosched: rename 'desktop' sysfs entry to 'low_latency' 



Don't think that's necessarily a perfect description of what this
option fiddles with, but it's probably better than 'desktop'.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 8e296755

block/cfq-iosched.c

+7 −7
Original line number Diff line number Diff line
@@ -173,7 +173,7 @@ struct cfq_data { 
	unsigned int cfq_slice[2];

	unsigned int cfq_slice_async_rq;

	unsigned int cfq_slice_idle;

	unsigned int cfq_desktop;

	unsigned int cfq_latency;



	struct list_head cic_list;
@@ -1341,7 +1341,7 @@ static int cfq_dispatch_requests(struct request_queue *q, int force) 
	 * We also ramp up the dispatch depth gradually for async IO,

	 * based on the last sync IO we serviced

	 */

	if (!cfq_cfqq_sync(cfqq) && cfqd->cfq_desktop) {

	if (!cfq_cfqq_sync(cfqq) && cfqd->cfq_latency) {

		unsigned long last_sync = jiffies - cfqd->last_end_sync_rq;

		unsigned int depth;
@@ -1980,7 +1980,7 @@ cfq_update_idle_window(struct cfq_data *cfqd, struct cfq_queue *cfqq, 
	enable_idle = old_idle = cfq_cfqq_idle_window(cfqq);



	if (!atomic_read(&cic->ioc->nr_tasks) || !cfqd->cfq_slice_idle ||

	    (!cfqd->cfq_desktop && cfqd->hw_tag && CIC_SEEKY(cic)))

	    (!cfqd->cfq_latency && cfqd->hw_tag && CIC_SEEKY(cic)))

		enable_idle = 0;

	else if (sample_valid(cic->ttime_samples)) {

		if (cic->ttime_mean > cfqd->cfq_slice_idle)
@@ -2511,7 +2511,7 @@ static void *cfq_init_queue(struct request_queue *q) 
	cfqd->cfq_slice[1] = cfq_slice_sync;

	cfqd->cfq_slice_async_rq = cfq_slice_async_rq;

	cfqd->cfq_slice_idle = cfq_slice_idle;

	cfqd->cfq_desktop = 1;

	cfqd->cfq_latency = 1;

	cfqd->hw_tag = 1;

	cfqd->last_end_sync_rq = jiffies;

	return cfqd;
@@ -2581,7 +2581,7 @@ 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);

SHOW_FUNCTION(cfq_slice_async_rq_show, cfqd->cfq_slice_async_rq, 0);

SHOW_FUNCTION(cfq_desktop_show, cfqd->cfq_desktop, 0);

SHOW_FUNCTION(cfq_low_latency_show, cfqd->cfq_latency, 0);

#undef SHOW_FUNCTION



#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV)			\
@@ -2613,7 +2613,7 @@ 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);

STORE_FUNCTION(cfq_slice_async_rq_store, &cfqd->cfq_slice_async_rq, 1,

		UINT_MAX, 0);

STORE_FUNCTION(cfq_desktop_store, &cfqd->cfq_desktop, 0, 1, 0);

STORE_FUNCTION(cfq_low_latency_store, &cfqd->cfq_latency, 0, 1, 0);

#undef STORE_FUNCTION



#define CFQ_ATTR(name) \
@@ -2629,7 +2629,7 @@ static struct elv_fs_entry cfq_attrs[] = { 
	CFQ_ATTR(slice_async),

	CFQ_ATTR(slice_async_rq),

	CFQ_ATTR(slice_idle),

	CFQ_ATTR(desktop),

	CFQ_ATTR(low_latency),

	__ATTR_NULL

};