The patch titled
Subject: rtsx_usb_ms: use schedule_timeout_idle() in polling loop
has been added to the -mm tree. Its filename is
rtsx_usb_ms-use-schedule_timeout_idle-in-polling-loop-v2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/rtsx_usb_ms-use-schedule_timeout_idle-in-polling-loop-v2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/rtsx_usb_ms-use-schedule_timeout_idle-in-polling-loop-v2.patch
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------------------------------------------------------
From: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx>
Subject: rtsx_usb_ms: use schedule_timeout_idle() in polling loop
First version of this patch has already been posted to LKML by Ben
Hutchings ~6 months ago, but no further action were performed.
Ben's original message:
: rtsx_usb_ms creates a task that mostly sleeps, but tasks in
: uninterruptible sleep still contribute to the load average (for
: bug-compatibility with Unix). A load average of ~1 on a system that
: should be idle is somewhat alarming.
:
: Change the sleep to be interruptible, but still ignore signals.
References: https://bugs.debian.org/765717
Link: http://lkml.kernel.org/r/b49f95ae83057efa5d96f532803cba47@xxxxxxxxxxxxxx
Signed-off-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Cc: Roger Tseng <rogerable@xxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/memstick/host/rtsx_usb_ms.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/memstick/host/rtsx_usb_ms.c~rtsx_usb_ms-use-schedule_timeout_idle-in-polling-loop-v2 drivers/memstick/host/rtsx_usb_ms.c
--- a/drivers/memstick/host/rtsx_usb_ms.c~rtsx_usb_ms-use-schedule_timeout_idle-in-polling-loop-v2
+++ a/drivers/memstick/host/rtsx_usb_ms.c
@@ -706,7 +706,7 @@ poll_again:
if (host->eject)
break;
- msleep(1000);
+ schedule_timeout_idle(HZ);
}
complete(&host->detect_ms_exit);
_
Patches currently in -mm which might be from oleksandr@xxxxxxxxxxxxxx are
rtsx_usb_ms-use-schedule_timeout_idle-in-polling-loop-v2.patch
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