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Re: [PATCH] seqlock: serialize against writers

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From: Andi Kleen
Subject: Re: [PATCH] seqlock: serialize against writers
Date: Friday, August 29, 2008 - 9:22 am

> Im running it on a x86_64 box as we speak.  How can I tell if there is a

If the boot up says you're running with PMtimer then it uses the fallback
(usually happens on pre Fam10h AMD boxes). A typical Intel box
would use the faster ring 3 only TSC path and then explode with your
change I bet. 

Or step with gdb through gettimeofday() and see if it does a syscall.

-Andi
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Messages in current thread:
[PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 8:44 am)
Re: [PATCH] seqlock: serialize against writers, Andi Kleen, (Fri Aug 29, 9:09 am)
Re: [PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 9:10 am)
Re: [PATCH] seqlock: serialize against writers, Andi Kleen, (Fri Aug 29, 9:22 am)
Re: [PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 9:26 am)
Re: [PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 9:29 am)
Re: [PATCH] seqlock: serialize against writers, Steven Rostedt, (Fri Aug 29, 9:34 am)
Re: [PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 9:35 am)
Re: [PATCH] seqlock: serialize against writers, Andi Kleen, (Fri Aug 29, 9:37 am)
Re: [PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 9:41 am)
Re: [PATCH] seqlock: serialize against writers, Andi Kleen, (Fri Aug 29, 9:45 am)
Re: [PATCH] seqlock: serialize against writers, Steven Rostedt, (Fri Aug 29, 9:53 am)
Re: [PATCH] seqlock: serialize against writers, Stephen Hemminger, (Fri Aug 29, 9:57 am)
Re: [PATCH] seqlock: serialize against writers, Steven Rostedt, (Fri Aug 29, 9:58 am)
Re: [PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 10:00 am)
Re: [PATCH] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 10:00 am)
Re: [ RT PATCH] seqlock: serialize against writers, Steven Rostedt, (Fri Aug 29, 10:02 am)
Re: [PATCH] seqlock: serialize against writers, Andi Kleen, (Fri Aug 29, 10:08 am)
[RT PATCH v2] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 11:03 am)
Re: [RT PATCH v2] seqlock: serialize against writers, Gregory Haskins, (Fri Aug 29, 11:12 am)
Re: [PATCH] seqlock: serialize against writers, Peter Zijlstra, (Sat Aug 30, 4:08 am)
Re: [RT PATCH v2] seqlock: serialize against writers, Peter Zijlstra, (Sat Aug 30, 4:17 am)
Re: [RT PATCH v2] seqlock: serialize against writers, Gregory Haskins, (Sat Aug 30, 5:32 am)
Re: [RT PATCH v2] seqlock: serialize against writers, Peter Zijlstra, (Sat Aug 30, 5:38 am)
Re: [RT PATCH v2] seqlock: serialize against writers, Gregory Haskins, (Sat Aug 30, 6:05 am)
[RT PATCH v3] seqlock: serialize against writers, Gregory Haskins, (Tue Sep 2, 5:45 am)
Re: [RT PATCH v3] seqlock: serialize against writers, Gregory Haskins, (Tue Sep 2, 6:01 am)
[RT PATCH v4] seqlock: serialize against writers, Gregory Haskins, (Tue Sep 2, 6:29 am)