Re: [RFC] [PATCH] Disable TSCs on CONFIG_MULTIQUAD

Alan Cox
2002-05-29T21:48:51Z

On Wed, 2002-05-29 at 21:40, john stultz wrote:
> Hi all,
> Just wanted to submit this for comments. As we've been having trouble
> keeping the TSCs on NUMA hardware synced (resulting in gettimeofday
> occasionally going backward), this patch (against 2.4.18) disables TSCs
> if CONFIG_MULTIQUAD is enabled. Any suggestions for simplifying the
> changes to config.in would be appreciated.

Add CONFIG_X86_TSC_NOT_SYNCHRONOUS or similar and then check

#if defined(CONFIG_X86_TSC) && !defined(CONFIG_X86_NOT_SYNCHRONOUS))

??