[PATCH v2 04/16] block: add sysfs attributes for runtime control of dpmg and swapin
From: Venkatraman S <hidden>
Date: 2012-05-03 14:23:03
Also in:
linux-fsdevel, linux-mmc, linux-omap, lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
sysfs entries for DPMG and SWAPIN requests so that they can be set/reset from userspace. Signed-off-by: Venkatraman S <redacted> --- block/blk-sysfs.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index cf15001..764de9f 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c@@ -213,6 +213,8 @@ queue_store_##name(struct request_queue *q, const char *page, size_t count) \ } QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1); +QUEUE_SYSFS_BIT_FNS(expedite_dmpg, EXP_DMPG, 0); +QUEUE_SYSFS_BIT_FNS(expedite_swapin, EXP_SWAPIN, 0); QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0); QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0); #undef QUEUE_SYSFS_BIT_FNS
@@ -387,6 +389,18 @@ static struct queue_sysfs_entry queue_random_entry = { .store = queue_store_random, }; +static struct queue_sysfs_entry queue_dmpg_entry = { + .attr = {.name = "expedite_demandpaging", .mode = S_IRUGO | S_IWUSR }, + .show = queue_show_expedite_dmpg, + .store = queue_store_expedite_dmpg, +}; + +static struct queue_sysfs_entry queue_swapin_entry = { + .attr = {.name = "expedite_swapping", .mode = S_IRUGO | S_IWUSR }, + .show = queue_show_expedite_swapin, + .store = queue_store_expedite_swapin, +}; + static struct attribute *default_attrs[] = { &queue_requests_entry.attr, &queue_ra_entry.attr,
@@ -409,6 +423,8 @@ static struct attribute *default_attrs[] = { &queue_rq_affinity_entry.attr, &queue_iostats_entry.attr, &queue_random_entry.attr, + &queue_dmpg_entry.attr, + &queue_swapin_entry.attr, NULL, };
--
1.7.10.rc2
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