From: Sitsofe Wheeler <sitsofe@yahoo.com>
Date: Sun, 9 Jul 2017 07:32:47 +0000 (+0100)
Subject: arch: raise an error when compiling for an unknown ARM platform
X-Git-Tag: fio-3.0~27^2~6
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=4dbc7d3b076caf854e69e40e5fee8eb9994e9df3;ds=sidebyside

arch: raise an error when compiling for an unknown ARM platform

The nop, read_barrier() and write_barrier() macros have to always be
defined but due to the way os/arch-arm.h is written it is possible for
them to be undefined when the ARM platform is not recognized.

Change things so compiling for an unknown ARM platform raises an
explicit compilation error at the point of the problem.

Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com>
---

diff --git a/arch/arch-arm.h b/arch/arch-arm.h
index 31671fdb..dd286d04 100644
--- a/arch/arch-arm.h
+++ b/arch/arch-arm.h
@@ -14,6 +14,8 @@
 #define	nop		__asm__ __volatile__ ("nop")
 #define read_barrier()	__sync_synchronize()
 #define write_barrier()	__sync_synchronize()
+#else
+#error "unsupported ARM architecture"
 #endif
 
 #endif