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Message-Id: <20180603122652.17453-9-gregkh@linuxfoundation.org>
Date: Sun, 3 Jun 2018 14:26:31 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>,
Adrian Hunter <adrian.hunter@...el.com>,
David Ahern <dsahern@...il.com>,
Elena Reshetova <elena.reshetova@...el.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Wang Nan <wangnan0@...wei.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 08/29] tools include: Adopt __compiletime_error
From: Arnaldo Carvalho de Melo <acme@...hat.com>
commit 4900653829175f60356efc279695bb23c59483c3 upstream.
>From the kernel, get the gcc one and provide the fallback so that we can
continue build with other compilers, such as with clang.
Will be used by tools/arch/x86/include/asm/cmpxchg.h.
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Elena Reshetova <elena.reshetova@...el.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/n/tip-pecgz6efai4a9euuk4rxuotr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
tools/include/linux/compiler-gcc.h | 4 ++++
tools/include/linux/compiler.h | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/tools/include/linux/compiler-gcc.h b/tools/include/linux/compiler-gcc.h
index 48af2f10a42d..616935f1ff56 100644
--- a/tools/include/linux/compiler-gcc.h
+++ b/tools/include/linux/compiler-gcc.h
@@ -12,3 +12,7 @@
#if GCC_VERSION >= 70000 && !defined(__CHECKER__)
# define __fallthrough __attribute__ ((fallthrough))
#endif
+
+#if GCC_VERSION >= 40300
+# define __compiletime_error(message) __attribute__((error(message)))
+#endif /* GCC_VERSION >= 40300 */
diff --git a/tools/include/linux/compiler.h b/tools/include/linux/compiler.h
index 8de163b17c0d..c9e65e8faacd 100644
--- a/tools/include/linux/compiler.h
+++ b/tools/include/linux/compiler.h
@@ -5,6 +5,10 @@
#include <linux/compiler-gcc.h>
#endif
+#ifndef __compiletime_error
+# define __compiletime_error(message)
+#endif
+
/* Optimization barrier */
/* The "volatile" is due to gcc bugs */
#define barrier() __asm__ __volatile__("": : :"memory")
--
2.17.1
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