From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com ([134.134.136.65]:30248 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752621AbdK0Vec (ORCPT ); Mon, 27 Nov 2017 16:34:32 -0500 From: Andi Kleen Subject: [PATCH 03/21] x86/timer: Don't inline __const_udelay Date: Mon, 27 Nov 2017 13:34:05 -0800 Message-Id: <20171127213423.27218-4-andi@firstfloor.org> In-Reply-To: <20171127213423.27218-1-andi@firstfloor.org> References: <20171127213423.27218-1-andi@firstfloor.org> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, samitolvanen@google.com, alxmtvv@gmail.com, linux-kbuild@vger.kernel.org, yamada.masahiro@socionext.com, akpm@linux-foundation.org, Andi Kleen From: Andi Kleen __const_udelay is marked inline, and LTO will happily inline it everywhere Dropping the inline saves ~44k text in a LTO build. 13999560 1740864 1499136 17239560 1070e08 vmlinux-with-udelay-inline 13954764 1736768 1499136 17190668 1064f0c vmlinux-wo-udelay-inline Even without LTO I believe marking it noinline documents it correctly. Signed-off-by: Andi Kleen --- arch/x86/lib/delay.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/lib/delay.c b/arch/x86/lib/delay.c index 553f8fd23cc4..09c83b2f80d2 100644 --- a/arch/x86/lib/delay.c +++ b/arch/x86/lib/delay.c @@ -162,7 +162,7 @@ void __delay(unsigned long loops) } EXPORT_SYMBOL(__delay); -inline void __const_udelay(unsigned long xloops) +void __const_udelay(unsigned long xloops) { unsigned long lpj = this_cpu_read(cpu_info.loops_per_jiffy) ? : loops_per_jiffy; int d0; -- 2.13.6