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From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Andrew Morton <akpm@linux-foundation.org>, linux-api@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	linuxppc-dev@lists.ozlabs.org
Subject: [RFC PATCH 1/9] powerpc: allocate sys_membarrier system call number
Date: Thu, 27 Aug 2015 13:56:47 -0400	[thread overview]
Message-ID: <1440698215-8355-2-git-send-email-mathieu.desnoyers@efficios.com> (raw)
In-Reply-To: <1440698215-8355-1-git-send-email-mathieu.desnoyers@efficios.com>

Allow it to be used from SPU, since it should not have unwanted
side-effects.

[ Untested on this architecture. To try it out: fetch linux-next/akpm,
  apply this patch, build/run a membarrier-enabled kernel, and do make
  kselftest. ]

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: linux-api@vger.kernel.org
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <paulus@samba.org>
CC: Michael Ellerman <mpe@ellerman.id.au>
CC: linuxppc-dev@lists.ozlabs.org
---
 arch/powerpc/include/asm/systbl.h      | 1 +
 arch/powerpc/include/asm/unistd.h      | 2 +-
 arch/powerpc/include/uapi/asm/unistd.h | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 4d65499..126d0c4 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -369,3 +369,4 @@ SYSCALL_SPU(bpf)
 COMPAT_SYS(execveat)
 PPC64ONLY(switch_endian)
 SYSCALL_SPU(userfaultfd)
+SYSCALL_SPU(membarrier)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index 4a055b6..13411be 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -12,7 +12,7 @@
 #include <uapi/asm/unistd.h>
 
 
-#define __NR_syscalls		365
+#define __NR_syscalls		366
 
 #define __NR__exit __NR_exit
 #define NR_syscalls	__NR_syscalls
diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h
index 6ad58d4..6337738 100644
--- a/arch/powerpc/include/uapi/asm/unistd.h
+++ b/arch/powerpc/include/uapi/asm/unistd.h
@@ -387,5 +387,6 @@
 #define __NR_execveat		362
 #define __NR_switch_endian	363
 #define __NR_userfaultfd	364
+#define __NR_membarrier		365
 
 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
-- 
1.9.1


  reply	other threads:[~2015-08-27 18:02 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-27 17:56 [RFC PATCH 0/9] allocate sys_membarrier system call number on major archs Mathieu Desnoyers
2015-08-27 17:56 ` Mathieu Desnoyers [this message]
2015-08-31  6:54   ` [RFC PATCH 1/9] powerpc: allocate sys_membarrier system call number Michael Ellerman
2015-08-31 15:32     ` Mathieu Desnoyers
2015-09-01  1:00       ` Michael Ellerman
2015-08-27 17:56 ` [RFC PATCH 2/9] arm: " Mathieu Desnoyers
2015-08-27 22:51   ` Russell King - ARM Linux
2015-08-27 23:16     ` Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 3/9] arm64: " Mathieu Desnoyers
2015-09-02 10:10   ` Will Deacon
2015-09-03 15:38     ` Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 4/9] mips: " Mathieu Desnoyers
2015-08-28  7:40   ` Ralf Baechle
2015-08-28 14:06     ` Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 5/9] s390/s390x: " Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 6/9] sparc/sparc64: " Mathieu Desnoyers
2015-08-27 23:16   ` David Miller
2015-08-27 17:56 ` [RFC PATCH 7/9] alpha: " Mathieu Desnoyers
2015-08-27 18:34   ` Matt Turner
2015-08-27 19:06     ` Mathieu Desnoyers
2015-08-27 19:07     ` [RFC PATCH v2] " Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 8/9] ia64: " Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 9/9] parisc: " Mathieu Desnoyers
2015-09-03 12:26   ` Helge Deller
2015-09-03 15:41     ` Mathieu Desnoyers

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