lkml.org 
[lkml]   [2007]   [Jul]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch] use __asm__ and __volatile__ in asm-x86_64/msr.h
Mike Frysinger wrote:
> On Wednesday 20 June 2007, H. Peter Anvin wrote:
>> Andi Kleen wrote:
>>>> asm-i386/msr.h should not be exported to userspace at all, it contains
>>>> nothing but kernel-internal helpers.
>>> Actually rdtsc and rdtscll and potentially rdpmc which is in there can be
>>> very useful in user space if you know what you're doing. Unfortunately a
>>> lot of its users don't, but not having the include probably won't stop
>>> them either.
>> More likely, people will just re-implement them incorrectly.
>>
>> However, the rdtsc() definition in the kernel is weird (and removable, I
>> think there are no more users -- I have it removed in my MSR driver
>> rewrite tree which I need to get off my arse and push.) Most users
>> would expect the rdtscll() functionality with the rdtsc() name.
>
> does that mean you'll also take care of cleaning up msr.h ? or do i need to
> post another patch ?

I'll put that on my list.

-hpa

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-07-23 03:29    [from the cache]
©2003-2011 Jasper Spaans