On Tuesday, September 13, 2016 7:10:02 AM CEST Deepa Dinamani wrote:
> --- a/drivers/input/misc/uinput.c
> +++ b/drivers/input/misc/uinput.c
> @@ -46,11 +46,28 @@ static int uinput_dev_event(struct input_dev *dev,
> unsigned int type, unsigned int code, int value)
> {
> struct uinput_device *udev = input_get_drvdata(dev);
> + struct timespec64 ts;
> + ktime_t kt;
>
> udev->buff[udev->head].type = type;
> udev->buff[udev->head].code = code;
> udev->buff[udev->head].value = value;
> - do_gettimeofday(&udev->buff[udev->head].time);
> +
> + kt = ktime_get();
> + switch (udev->clk_type) {
> + case CLOCK_REALTIME:
> + ts = ktime_to_timespec64(ktime_mono_to_real(kt));
> + break;
> + case CLOCK_MONOTONIC:
> + ts = ktime_to_timespec64(kt);
> + break;
> + case CLOCK_BOOTTIME:
> + ts = ktime_to_timespec64(ktime_mono_to_any(kt, TK_OFFS_BOOT));
> + break;
> + }
> +
> + udev->buff[udev->head].time.tv_sec = ts.tv_sec;
> + udev->buff[udev->head].time.tv_usec = ts.tv_nsec / NSEC_PER_USEC;
>
This is a bit inefficient. I think it's better to use
ktime_get_real_ts64(), ktime_get_ts64() and get_monotonic_boottime64().
I see that we do the same thing in evdev_events(), so maybe that isn't
overly critical though. Or we might want to change both.
The last one of these also uses the slow ktime_to_timespec64(), but
that is something we can improve later in the common code.
Arnd
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