[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:0.023 / U:17.440 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site