From: Andi Kleen <[email protected]> With LTO the compiler needs to know which function can be called from assembler, otherwise it would optimize those functions away. We use the existing asmlinkage for this, which is already used widely.
Note this causes warnings for static asmlinkage, which is used in some places. These can be later cleaned up. static asmlinkage usually makes no sense. Signed-off-by: Andi Kleen <[email protected]> --- include/linux/linkage.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/linkage.h b/include/linux/linkage.h index a6a42dd..34a513a 100644 --- a/include/linux/linkage.h +++ b/include/linux/linkage.h @@ -12,9 +12,9 @@ #endif #ifdef __cplusplus -#define CPP_ASMLINKAGE extern "C" +#define CPP_ASMLINKAGE extern "C" __visible #else -#define CPP_ASMLINKAGE +#define CPP_ASMLINKAGE __visible #endif #ifndef asmlinkage -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
