On Mon, 2004-08-23 at 11:30, Ingo Molnar wrote:
> i'll put the patch below into the -P8 patch. (change voluntary_resched()
> to cond_resched() if you apply this to a vanilla kernel.)
I'll start a kernel build to test this on top of P7... (I was about to
ask "what about the other places in radeon_cp.c that can spin for up to
the full timeout"? :-) This should fix r128 and mga as well...
beautiful.
-- Fernando
> Ingo
>
> --- linux/drivers/char/drm/drm_os_linux.h.orig
> +++ linux/drivers/char/drm/drm_os_linux.h
> @@ -14,7 +14,7 @@
> #define DRM_ERR(d) -(d)
> /** Current process ID */
> #define DRM_CURRENTPID current->pid
> -#define DRM_UDELAY(d) udelay(d)
> +#define DRM_UDELAY(d) do { voluntary_resched(); udelay(d); }
> while (0)
> /** Read a byte from a MMIO region */
> #define DRM_READ8(map, offset) readb(((unsigned long)(map)->handle) +
> (offset))
> /** Read a dword from a MMIO region */
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