From: Suleiman Souhlal <ssouhlal@FreeBSD.org>
To: Andi Kleen <ak@suse.de>
Cc: Linux Kernel ML <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/2] Make the TSC safe to be used by gettimeofday().
Date: Mon, 13 Nov 2006 17:06:45 -0800 [thread overview]
Message-ID: <455916A5.2030402@FreeBSD.org> (raw)
I've had a proof-of-concept for this since August, and finally got around to
somewhat cleaning it up.
It can certainly still be improved, namely by using vgetcpu() instead of CPUID
to find the cpu number (but I couldn't get it to work, when I tried).
Another possible improvement would be to use RDTSCP when available.
There's also a small race in do_gettimeofday(), vgettimeofday() and
vmonotonic_clock() but I've never seen it happen.
Suggestions are welcome.
-- Suleiman
next reply other threads:[~2006-11-14 1:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-14 1:06 Suleiman Souhlal [this message]
2006-11-14 1:08 ` [PATCH 1/2] Make the TSC safe to be used by gettimeofday() Suleiman Souhlal
2006-11-14 2:05 ` Andi Kleen
2006-11-14 2:25 ` Suleiman Souhlal
2006-11-14 2:44 ` Andi Kleen
2006-11-14 3:35 ` dean gaudet
2006-11-14 4:22 ` dean gaudet
2006-11-14 3:54 ` Suleiman Souhlal
2006-11-14 11:12 ` Andi Kleen
2006-11-14 1:09 ` [PATCH 2/2] Introduce a vmonotonic_clock() vsyscall Suleiman Souhlal
2006-11-14 1:50 ` [PATCH 0/2] Make the TSC safe to be used by gettimeofday() Andi Kleen
2006-11-14 2:06 ` Suleiman Souhlal
2006-11-14 11:10 ` [PATCH 0/2] Make the TSC safe to be used by gettimeofday() II Andi Kleen
2006-11-14 12:30 ` [PATCH 0/2] Make the TSC safe to be used by gettimeofday() Shem Multinymous
2006-11-14 17:06 ` Suleiman Souhlal
2006-11-14 18:30 ` Andi Kleen
2006-11-14 21:28 ` Christoph Lameter
2006-11-14 7:42 ` Arjan van de Ven
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