Re: [PATCH 7/8] serial: qcom-geni: disable interrupts during console writes

[Doug Anderson]

Hi,

On Mon, Sep 2, 2024 at 8:26 AM Johan Hovold <johan+linaro@xxxxxxxxxx> wrote:
>
> Disable the GENI interrupts during console writes to reduce the risk of
> having interrupt handlers spinning on the port lock on other cores for
> extended periods of time.
>
> This can, for example, reduce the total amount of time spent in the
> interrupt handler during boot of the x1e80100 CRD by up to a factor nine
> (e.g. from 274 ms to 30 ms) while the worst case processing time drops
> from 19 ms to 8 ms.
>
> Fixes: c4f528795d1a ("tty: serial: msm_geni_serial: Add serial driver support for GENI based QUP")
> Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>

Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>