lkml.org 
[lkml]   [2016]   [Jun]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[tip:x86/asm] x86, asm: Use CC_SET()/CC_OUT() in <asm/percpu.h>
    Commit-ID:  ad5bf6a52b7fac127d126434fdf950e7bd6f7554
    Gitweb: http://git.kernel.org/tip/ad5bf6a52b7fac127d126434fdf950e7bd6f7554
    Author: H. Peter Anvin <hpa@zytor.com>
    AuthorDate: Tue, 7 Jun 2016 16:31:06 -0700
    Committer: H. Peter Anvin <hpa@linux.intel.com>
    CommitDate: Tue, 7 Jun 2016 16:36:42 -0700

    x86, asm: Use CC_SET()/CC_OUT() in <asm/percpu.h>

    Remove open-coded uses of set instructions to use CC_SET()/CC_OUT() in
    <asm/percpu.h>.

    Signed-off-by: H. Peter Anvin <hpa@zytor.com>
    Link: http://lkml.kernel.org/r/1465342269-492350-8-git-send-email-hpa@linux.intel.com
    ---
    arch/x86/include/asm/percpu.h | 9 +++++----
    1 file changed, 5 insertions(+), 4 deletions(-)

    diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
    index 184d7f3..e02e3f8 100644
    --- a/arch/x86/include/asm/percpu.h
    +++ b/arch/x86/include/asm/percpu.h
    @@ -511,8 +511,9 @@ do { \
    #define x86_test_and_clear_bit_percpu(bit, var) \
    ({ \
    bool old__; \
    - asm volatile("btr %2,"__percpu_arg(1)"\n\tsetc %0" \
    - : "=qm" (old__), "+m" (var) \
    + asm volatile("btr %2,"__percpu_arg(1)"\n\t" \
    + CC_SET(c) \
    + : CC_OUT(c) (old__), "+m" (var) \
    : "dIr" (bit)); \
    old__; \
    })
    @@ -535,8 +536,8 @@ static inline bool x86_this_cpu_variable_test_bit(int nr,
    bool oldbit;

    asm volatile("bt "__percpu_arg(2)",%1\n\t"
    - "setc %0"
    - : "=qm" (oldbit)
    + CC_SET(c)
    + : CC_OUT(c) (oldbit)
    : "m" (*(unsigned long *)addr), "Ir" (nr));

    return oldbit;
    \
     
     \ /
      Last update: 2016-06-08 02:01    [W:2.376 / U:0.132 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site