de...@linuxdriverproject.org; plagn...@jcrosoft.com;
> > > tomi.valkei...@ti.com; linux-fb...@vger.kernel.org; o...@aepfle.de;
> > > a...@canonical.com; jasow...@redhat.com; Haiyang Zhang
> > > Subject: Re: [PATCH v2] video: hyperv: hyperv_fb: refresh the VM screen
> by
> &
.kernel.org; driverdev-
> > de...@linuxdriverproject.org; plagn...@jcrosoft.com;
> > tomi.valkei...@ti.com; linux-fb...@vger.kernel.org; o...@aepfle.de;
> > a...@canonical.com; jasow...@redhat.com; Haiyang Zhang
> > Subject: Re: [PATCH v2] video: hyperv: hyperv_fb: refresh the
tomi.valkei...@ti.com; linux-fb...@vger.kernel.org; o...@aepfle.de;
> a...@canonical.com; jasow...@redhat.com; Haiyang Zhang
> Subject: Re: [PATCH v2] video: hyperv: hyperv_fb: refresh the VM screen by
> force on VM panic
>
> Don't use likely/unlikely unless you have benchmark n
Don't use likely/unlikely unless you have benchmark numbers to show that
it makes a speed up.
regards,
dan carpenter
___
devel mailing list
de...@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
driverdev-
> de...@linuxdriverproject.org; plagn...@jcrosoft.com;
> tomi.valkei...@ti.com; linux-fb...@vger.kernel.org; o...@aepfle.de;
> a...@canonical.com; jasow...@redhat.com
> Cc: Haiyang Zhang
> Subject: [PATCH v2] video: hyperv: hyperv_fb: refresh the VM screen by force
> on VM panic
>
Currently the VSC has no chance to notify the VSP of the dirty rectangle on VM
panic because the notification work is done in a workqueue, and in panic() the
kernel typically ends up in an infinite loop, and a typical kernel config has
CONFIG_PREEMPT_VOLUNTARY=y and CONFIG_PREEMPT is not set, so a
