lkml.org 
[lkml]   [2007]   [Aug]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
Satyam Sharma wrote:
> [ BTW, why do we want the compiler to not optimize atomic_read()'s in
> the first place? Atomic ops guarantee atomicity, which has nothing
> to do with "volatility" -- users that expect "volatility" from
> atomic ops are the ones who must be fixed instead, IMHO. ]

LDD3 says on page 125: "The following operations are defined for the
type [atomic_t] and are guaranteed to be atomic with respect to all
processors of an SMP computer."

Doesn't "atomic WRT all processors" require volatility?
--
Stefan Richter
-=====-=-=== =--- -====
http://arcgraph.de/sr/
-
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: 2007-08-15 12:37    [W:0.294 / U:0.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site