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The x86-64 implementation of the atomics is totally different from the
i586+ implementation, which makes it quite confusing to call it
"586+". Also fix indentation, and add "i" for "i386" and "i586" as
used elsewhere in the kernel.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267005265-27958-4-git-send-email-luca@luca-barbieri.com>
atomic64_inc_not_zero must return 1 if it perfomed the add and 0 otherwise.
The test assumed the opposite convention.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267469749-11878-5-git-send-email-luca@luca-barbieri.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
atomic64_add_unless must return 1 if it perfomed the add and 0 otherwise.
The test assumed the opposite convention.
Reported-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267469749-11878-2-git-send-email-luca@luca-barbieri.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Add support for atomic_dec_if_positive(), and
atomic64_dec_if_positive() for x86-64.
atomic64_dec_if_positive() for x86-32 was already implemented in a previous patch.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267183361-20775-2-git-send-email-luca@luca-barbieri.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Currently atomic64_dec_if_positive() is only supported by PowerPC,
MIPS and x86-32.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267183361-20775-1-git-send-email-luca@luca-barbieri.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This patch adds self-test on boot code for atomic64_t.
This has been used to test the later changes in this patchset.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267005265-27958-4-git-send-email-luca@luca-barbieri.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
