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rtsx_usb_ms: use schedule_timeout_idle() in polling loop

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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@natalenko.name
Signed-off-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Roger Tseng <rogerable@realtek.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleksandr Natalenko 2016-05-23 16:24:28 -07:00 committed by Linus Torvalds
parent a0c20deae9
commit a831979f85
1 changed files with 1 additions and 1 deletions
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2
drivers/memstick/host/rtsx_usb_ms.c
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@ -706,7 +706,7 @@ poll_again:
if (host->eject)
break;
msleep(1000);
schedule_timeout_idle(HZ);
}
complete(&host->detect_ms_exit);