lkml.org 
[lkml]   [2006]   [Jan]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 00/21] mutex subsystem, -V14
>>Here is a first pass at a powerpc file for the fast paths just as an FYI/RFC.
>>It is completely untested, but compiles.
>
>
> Shouldn't you make that "isync" dependent on SMP too? UP doesn't need it,
> since DMA will never matter, and interrupts are precise.
>
> Linus
>

I think the isync is necessary to keep heavily out of order processors from
getting ahead of themselves even on UP. Scanning back through the powerpc
spinlock code they seem to take the same view there as well.
-
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: 2006-01-06 00:39    [W:0.110 / U:0.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site