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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 17:55:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 17:55:15 -0700
commit355bbd8cb82e60a592f6cd86ce6dbe5677615cf4 (patch)
tree23678e50ad4687f1656edc972388ee8014e7b89d /kernel
parent39695224bd84dc4be29abad93a0ec232a16fc519 (diff)
parent746cd1e7e4a555ddaee53b19a46e05c9c61eaf09 (diff)
Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block: (29 commits) block: use blkdev_issue_discard in blk_ioctl_discard Make DISCARD_BARRIER and DISCARD_NOBARRIER writes instead of reads block: don't assume device has a request list backing in nr_requests store block: Optimal I/O limit wrapper cfq: choose a new next_req when a request is dispatched Seperate read and write statistics of in_flight requests aoe: end barrier bios with EOPNOTSUPP block: trace bio queueing trial only when it occurs block: enable rq CPU completion affinity by default cfq: fix the log message after dispatched a request block: use printk_once cciss: memory leak in cciss_init_one() splice: update mtime and atime on files block: make blk_iopoll_prep_sched() follow normal 0/1 return convention cfq-iosched: get rid of must_alloc flag block: use interrupts disabled version of raise_softirq_irqoff() block: fix comment in blk-iopoll.c block: adjust default budget for blk-iopoll block: fix long lines in block/blk-iopoll.c block: add blk-iopoll, a NAPI like approach for block devices ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sysctl.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 3125cff1c570..6bb59f707402 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -91,6 +91,7 @@ extern int sysctl_nr_trim_pages;
#ifdef CONFIG_RCU_TORTURE_TEST
extern int rcutorture_runnable;
#endif /* #ifdef CONFIG_RCU_TORTURE_TEST */
+extern int blk_iopoll_enabled;
/* Constants used for minimum and maximum */
#ifdef CONFIG_DETECT_SOFTLOCKUP
@@ -997,7 +998,14 @@ static struct ctl_table kern_table[] = {
.proc_handler = &proc_dointvec,
},
#endif
-
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "blk_iopoll",
+ .data = &blk_iopoll_enabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
/*
* NOTE: do not add new entries to this table unless you have read
* Documentation/sysctl/ctl_unnumbered.txt