From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:52234 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752047AbeFDG7L (ORCPT ); Mon, 4 Jun 2018 02:59:11 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Adrian Hunter , David Ahern , Jiri Olsa , Namhyung Kim , Wang Nan , Arnaldo Carvalho de Melo Subject: [PATCH 4.9 15/29] tools include: Introduce linux/bug.h, from the kernel sources Date: Mon, 4 Jun 2018 08:58:11 +0200 Message-Id: <20180604065802.754284290@linuxfoundation.org> In-Reply-To: <20180604065802.157744637@linuxfoundation.org> References: <20180604065802.157744637@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Arnaldo Carvalho de Melo commit 379d61b1c7d42512cded04d372f15a7e725db9e1 upstream. With just what we will need in the upcoming changesets, the BUILD_BUG_ON_ZERO() definition. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-lw8zg7x6ttwcvqhp90mwe3vo@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- tools/include/linux/bug.h | 10 ++++++++++ tools/perf/MANIFEST | 1 + 2 files changed, 11 insertions(+) --- /dev/null +++ b/tools/include/linux/bug.h @@ -0,0 +1,10 @@ +#ifndef _TOOLS_PERF_LINUX_BUG_H +#define _TOOLS_PERF_LINUX_BUG_H + +/* Force a compilation error if condition is true, but also produce a + result (of value 0 and type size_t), so the expression can be used + e.g. in a structure initializer (or where-ever else comma expressions + aren't permitted). */ +#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) + +#endif /* _TOOLS_PERF_LINUX_BUG_H */ --- a/tools/perf/MANIFEST +++ b/tools/perf/MANIFEST @@ -63,6 +63,7 @@ tools/include/linux/bitops.h tools/include/linux/compiler.h tools/include/linux/compiler-gcc.h tools/include/linux/coresight-pmu.h +tools/include/linux/bug.h tools/include/linux/filter.h tools/include/linux/hash.h tools/include/linux/kernel.h