[lkml]   [2007]   [Aug]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
On Thu, Aug 16, 2007 at 10:06:31AM +0200, Stefan Richter wrote:
> >
> > Do you (or anyone else for that matter) have an example of this?
> The only code I somewhat know, the ieee1394 subsystem, was perhaps
> authored and is currently maintained with the expectation that each
> occurrence of atomic_read actually results in a load operation, i.e. is
> not optimized away. This means all atomic_t (bus generation, packet and
> buffer refcounts, and some other state variables)* and likewise all
> atomic bitops in that subsystem.

Can you find an actual atomic_read code snippet there that is
broken without the volatile modifier?

Visit Openswan at
Email: Herbert Xu ~{PmV>HI~} <>
Home Page:
PGP Key:
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-08-16 10:15    [W:0.310 / U:1.988 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site