From: Mike Kravetz <kravetz@us.ibm.com>
To: Olof Johansson <olof@lixom.net>
Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH 2/3] powerpc: Instrument Hypervisor Calls: add wrappers
Date: Tue, 18 Jul 2006 16:18:15 -0700 [thread overview]
Message-ID: <20060718231815.GC3091@w-mikek2.ibm.com> (raw)
In-Reply-To: <20060718223425.GB5238@pb15.lixom.net>
On Tue, Jul 18, 2006 at 05:34:25PM -0500, Olof Johansson wrote:
> As I said before, SPRN_PURR doesn't exist on all architecture versions
> that supports hypervisor mode.
Thanks!
I assume checking must be done at run time via something like,
if (cpu_has_feature(CPU_FTR_PURR))
Also assume that it would make sense to do this determination at
initialization/boot time and put the result in the statistic data
structure. In this way we would know it is in the same cache line
we are updating with other stats. Or, should cur_cpu_spec->cpu_features
be 'sufficiently hot' to make this a non-issue?
--
Mike
next prev parent reply other threads:[~2006-07-18 23:18 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-18 20:47 [PATCH 0/3] powerpc: Instrument Hypervisor Calls Mike Kravetz
2006-07-18 20:48 ` [PATCH 1/3] powerpc: Instrument Hypervisor Calls: merge headers Mike Kravetz
2006-07-18 20:49 ` [PATCH 2/3] powerpc: Instrument Hypervisor Calls: add wrappers Mike Kravetz
2006-07-18 22:34 ` Olof Johansson
2006-07-18 23:18 ` Mike Kravetz [this message]
2006-07-19 3:33 ` Olof Johansson
2006-07-19 3:50 ` Mike Kravetz
2006-07-18 20:50 ` [PATCH 3/3] powerpc: Instrument Hypervisor Calls: add debugfs files Mike Kravetz
2006-07-18 21:00 ` [PATCH 0/3] powerpc: Instrument Hypervisor Calls Paul Mackerras
2006-07-19 3:36 ` Mike Kravetz
2006-07-19 22:11 ` Mike Kravetz
2006-07-18 21:29 ` Mike Kravetz
2006-07-18 22:38 ` Olof Johansson
-- strict thread matches above, loose matches on Subject: below --
2006-07-14 23:37 Mike Kravetz
2006-07-14 23:40 ` [PATCH 2/3] powerpc: Instrument Hypervisor Calls: add wrappers Mike Kravetz
2006-07-15 0:15 ` Nathan Lynch
2006-07-15 0:41 ` Mike Kravetz
2006-07-15 8:03 ` Nathan Lynch
2006-06-22 22:56 [PATCH 0/3] powerpc: Instrument Hypervisor Calls Mike Kravetz
2006-06-22 22:58 ` [PATCH 2/3] powerpc: Instrument Hypervisor Calls: add wrappers Mike Kravetz
2006-06-14 3:47 [PATCH 0/3] powerpc: Instrument Hypervisor Calls Mike Kravetz
2006-06-14 3:52 ` [PATCH 2/3] powerpc: Instrument Hypervisor Calls: add wrappers Mike Kravetz
2006-06-14 7:23 ` Arnd Bergmann
2006-06-14 14:42 ` Nathan Lynch
2006-06-14 22:33 ` Paul Mackerras
2006-06-14 22:40 ` Nathan Lynch
2006-06-14 23:52 ` Mike Kravetz
2006-06-15 11:09 ` Arnd Bergmann
2006-06-15 14:58 ` Mike Kravetz
2006-06-15 16:06 ` Arnd Bergmann
2006-06-16 16:11 ` Mike Kravetz
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