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Message-ID: <20151008071932.GI17172@x1> Date: Thu, 8 Oct 2015 08:19:32 +0100 From: Lee Jones <lee.jones@...aro.org> To: Ben Hutchings <ben@...adent.org.uk> Cc: Maxim Levitsky <maximlevitsky@...il.com>, Roger Tseng <rogerable@...ltek.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH RESEND] rtsx_usb_ms: Use msleep_interruptible() in polling loop On Mon, 28 Sep 2015, Ben Hutchings wrote: > 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. > > A better fix might be to replace this loop with a delayed work item. > > References: https://bugs.debian.org/765717 > Signed-off-by: Ben Hutchings <ben@...adent.org.uk> Any chance you can use Git instead of Quilt? Failing that, is there a way to tell Quilt to supply a diffstat in the patch? > --- > --- a/drivers/memstick/host/rtsx_usb_ms.c > +++ b/drivers/memstick/host/rtsx_usb_ms.c > @@ -706,7 +706,8 @@ poll_again: > if (host->eject) > break; > > - msleep(1000); > + if (msleep_interruptible(1000)) > + flush_signals(current); > } > > complete(&host->detect_ms_exit); -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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