From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com ([192.55.52.93]:12903 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755979AbaBRO3r (ORCPT ); Tue, 18 Feb 2014 09:29:47 -0500 From: Andi Kleen Subject: [PATCH 03/20] lto: Make asmlinkage __visible Date: Tue, 18 Feb 2014 15:28:41 +0100 Message-Id: <1392733738-8290-4-git-send-email-andi@firstfloor.org> In-Reply-To: <1392733738-8290-1-git-send-email-andi@firstfloor.org> References: <1392733738-8290-1-git-send-email-andi@firstfloor.org> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org Cc: sam@ravnborg.org, x86@kernel.org, linux-kbuild@vger.kernel.org, Andi Kleen From: Andi Kleen 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 --- 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