Re: [PATCH] x86-64: Add time to vDSO
From: Andi Kleen
Date: Thu May 19 2011 - 09:53:41 EST
On Thu, May 19, 2011 at 09:24:48AM -0400, Andy Lutomirski wrote:
> The only fast implementation of time(2) we expose is through the
> vsyscall page and we want to get userspace to stop using the
> vsyscall page. So make it available through the vDSO as well.
User space can just use vgettimeofday() and only take the seconds.
Adding time() too was a mistake back then.
And BTW just for seconds alone you wouldn't need the seqlock.
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