[PATCH] Don't rely on having LP64 in semaphores if 64b atomic ops are available.

[H.J. Lu]

On Thu, Jan 22, 2015 at 10:24 AM, Torvald Riegel <triegel@redhat.com> wrote:
> This attempts to fix an issue in the new semaphore implementation for
> archs that provide 64b atomic ops but do not use an LP64 data model.
> This affects MIPS N32 ABI and x32 too I guess.
>
> Steve, can you test this patch please?  I'll do the same on x86_64-linux
> in the meantime.
>
> Also, do we already have any information on which data models we
> support?  I reckon LP64 and ILP32?, or others as well?  I'd like to add
> a comment to atomic.h, and if we have such information already, I'd just
> point to it.
>
>
> 2015-01-22  Torvald Riegel  <triegel@redhat.com>
>
>         * nptl/sem_post.c (__new_sem_post): Don't rely on an LP64 data model.
>         * nptl/sem_waitcommon.c (__sem_wait_cleanup, __new_sem_wait_fast,
>         __new_sem_wait_slow): Likewise.
>         * sysdeps/nptl/internaltypes.h (struct new_sem): Likewise.

Do we really need int64 for the "data" field internally?


-- 
H.J.