From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Date: Sun, 10 Jan 2016 14:22:05 +0000 Subject: [PATCH v3 40/41] s390: use generic memory barriers Message-Id: <1452426622-4471-41-git-send-email-mst@redhat.com> List-Id: References: <1452426622-4471-1-git-send-email-mst@redhat.com> In-Reply-To: <1452426622-4471-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org Cc: Peter Zijlstra , Arnd Bergmann , linux-arch@vger.kernel.org, Andrew Cooper , Russell King - ARM Linux , virtualization@lists.linux-foundation.org, Stefano Stabellini , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Joe Perches , David Miller , linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-metag@vger.kernel.org, linux-mips@linux-mips.org, x86@kernel.org, user-mode-linux-devel@lists.sourceforge.net, adi-buildroot-devel@lists.sourceforge.net, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, xen-devel@lists.xenproject.org, Martin The s390 kernel is SMP to 99.99%, we just didn't bother with a non-smp variant for the memory-barriers. If the generic header is used we'd get the non-smp version for free. It will save a small amount of text space for CONFIG_SMP=n. Suggested-by: Martin Schwidefsky Signed-off-by: Michael S. Tsirkin --- arch/s390/include/asm/barrier.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index fbd25b2..4d26fa4 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -29,9 +29,6 @@ #define __smp_mb() mb() #define __smp_rmb() rmb() #define __smp_wmb() wmb() -#define smp_mb() __smp_mb() -#define smp_rmb() __smp_rmb() -#define smp_wmb() __smp_wmb() #define __smp_store_release(p, v) \ do { \ -- MST