From: David Howells <dhowells@redhat.com>
To: torvalds@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, David Howells <dhowells@redhat.com>,
Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCH 1/2] UAPI: Fix the guards on various asm/unistd.h files
Date: Thu, 04 Oct 2012 00:10:51 +0100 [thread overview]
Message-ID: <20121003231051.19239.86879.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <20121003231044.19239.81961.stgit@warthog.procyon.org.uk>
asm-generic/unistd.h and a number of asm/unistd.h files have been given
reinclusion guards that allow the guard to be overridden if __SYSCALL is
defined. Unfortunately, these files define __SYSCALL and don't undefine it
when they've finished with it, thus rendering the guard ineffective.
The reason for this override is to allow the file to be #included multiple
times with different settings on __SYSCALL for purposes like generating syscall
tables.
The following guards are problematic:
arch/arm64/include/asm/unistd.h:#if !defined(__ASM_UNISTD_H) || defined(__SYSCALL)
arch/arm64/include/asm/unistd32.h:#if !defined(__ASM_UNISTD32_H) || defined(__SYSCALL)
arch/c6x/include/asm/unistd.h:#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL)
arch/hexagon/include/asm/unistd.h:#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL)
arch/openrisc/include/asm/unistd.h:#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL)
arch/score/include/asm/unistd.h:#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
arch/tile/include/asm/unistd.h:#if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL)
arch/unicore32/include/asm/unistd.h:#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL)
include/asm-generic/unistd.h:#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)
On the assumption that the guards' ineffectiveness has passed unnoticed, just
remove these guards entirely.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
arch/arm64/include/asm/unistd.h | 4 ----
arch/arm64/include/asm/unistd32.h | 4 ----
arch/c6x/include/asm/unistd.h | 4 ----
arch/hexagon/include/asm/unistd.h | 5 -----
arch/openrisc/include/asm/unistd.h | 5 -----
arch/score/include/asm/unistd.h | 5 -----
arch/tile/include/asm/unistd.h | 5 -----
arch/unicore32/include/asm/unistd.h | 4 ----
include/asm-generic/unistd.h | 4 ----
9 files changed, 40 deletions(-)
diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
index fe18a68..f55ba3e 100644
--- a/arch/arm64/include/asm/unistd.h
+++ b/arch/arm64/include/asm/unistd.h
@@ -13,8 +13,6 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#if !defined(__ASM_UNISTD_H) || defined(__SYSCALL)
-#define __ASM_UNISTD_H
#ifndef __SYSCALL_COMPAT
#include <asm-generic/unistd.h>
@@ -23,5 +21,3 @@
#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
#include <asm/unistd32.h>
#endif
-
-#endif /* __ASM_UNISTD_H */
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index a50405f..3ba1f1a 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -16,8 +16,6 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#if !defined(__ASM_UNISTD32_H) || defined(__SYSCALL)
-#define __ASM_UNISTD32_H
#ifndef __SYSCALL
#define __SYSCALL(x, y)
@@ -754,5 +752,3 @@ __SYSCALL(__NR_syncfs, sys_syncfs)
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK
#define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
-
-#endif /* __ASM_UNISTD32_H */
diff --git a/arch/c6x/include/asm/unistd.h b/arch/c6x/include/asm/unistd.h
index 6d54ea4..ed22590 100644
--- a/arch/c6x/include/asm/unistd.h
+++ b/arch/c6x/include/asm/unistd.h
@@ -13,8 +13,6 @@
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
-#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL)
-#define _ASM_C6X_UNISTD_H
/* Use the standard ABI for syscalls. */
#include <asm-generic/unistd.h>
@@ -22,5 +20,3 @@
/* C6X-specific syscalls. */
#define __NR_cache_sync (__NR_arch_specific_syscall + 0)
__SYSCALL(__NR_cache_sync, sys_cache_sync)
-
-#endif /* _ASM_C6X_UNISTD_H */
diff --git a/arch/hexagon/include/asm/unistd.h b/arch/hexagon/include/asm/unistd.h
index 4d0ecde..c0d5565 100644
--- a/arch/hexagon/include/asm/unistd.h
+++ b/arch/hexagon/include/asm/unistd.h
@@ -18,9 +18,6 @@
* 02110-1301, USA.
*/
-#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL)
-#define _ASM_HEXAGON_UNISTD_H
-
/*
* The kernel pulls this unistd.h in three different ways:
* 1. the "normal" way which gets all the __NR defines
@@ -32,5 +29,3 @@
#define sys_mmap2 sys_mmap_pgoff
#include <asm-generic/unistd.h>
-
-#endif
diff --git a/arch/openrisc/include/asm/unistd.h b/arch/openrisc/include/asm/unistd.h
index 89af3ab..437bdbb 100644
--- a/arch/openrisc/include/asm/unistd.h
+++ b/arch/openrisc/include/asm/unistd.h
@@ -16,9 +16,6 @@
* (at your option) any later version.
*/
-#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL)
-#define __ASM_OPENRISC_UNISTD_H
-
#define __ARCH_HAVE_MMU
#define sys_mmap2 sys_mmap_pgoff
@@ -27,5 +24,3 @@
#define __NR_or1k_atomic __NR_arch_specific_syscall
__SYSCALL(__NR_or1k_atomic, sys_or1k_atomic)
-
-#endif /* __ASM_OPENRISC_UNISTD_H */
diff --git a/arch/score/include/asm/unistd.h b/arch/score/include/asm/unistd.h
index 4aa9573..a862384 100644
--- a/arch/score/include/asm/unistd.h
+++ b/arch/score/include/asm/unistd.h
@@ -1,6 +1,3 @@
-#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
-#define _ASM_SCORE_UNISTD_H
-
#define __ARCH_HAVE_MMU
#define __ARCH_WANT_SYSCALL_NO_AT
@@ -9,5 +6,3 @@
#define __ARCH_WANT_SYSCALL_DEPRECATED
#include <asm-generic/unistd.h>
-
-#endif /* _ASM_SCORE_UNISTD_H */
diff --git a/arch/tile/include/asm/unistd.h b/arch/tile/include/asm/unistd.h
index a017246..0e1f3e6 100644
--- a/arch/tile/include/asm/unistd.h
+++ b/arch/tile/include/asm/unistd.h
@@ -12,9 +12,6 @@
* more details.
*/
-#if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL)
-#define _ASM_TILE_UNISTD_H
-
#if !defined(__LP64__) || defined(__SYSCALL_COMPAT)
/* Use the flavor of this syscall that matches the 32-bit API better. */
#define __ARCH_WANT_SYNC_FILE_RANGE2
@@ -43,5 +40,3 @@ __SYSCALL(__NR_cmpxchg_badaddr, sys_cmpxchg_badaddr)
#endif
#define __ARCH_WANT_SYS_NEWFSTATAT
#endif
-
-#endif /* _ASM_TILE_UNISTD_H */
diff --git a/arch/unicore32/include/asm/unistd.h b/arch/unicore32/include/asm/unistd.h
index 9b24280..2abcf61 100644
--- a/arch/unicore32/include/asm/unistd.h
+++ b/arch/unicore32/include/asm/unistd.h
@@ -9,10 +9,6 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL)
-#define __UNICORE_UNISTD_H__
/* Use the standard ABI for syscalls. */
#include <asm-generic/unistd.h>
-
-#endif /* __UNICORE_UNISTD_H__ */
diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
index 3748ec9..cf22fae 100644
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -1,6 +1,3 @@
-#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)
-#define _ASM_GENERIC_UNISTD_H
-
#include <asm/bitsperlong.h>
/*
@@ -930,4 +927,3 @@ __SYSCALL(__NR_fork, sys_ni_syscall)
#endif
#endif /* __KERNEL__ */
-#endif /* _ASM_GENERIC_UNISTD_H */
next prev parent reply other threads:[~2012-10-03 23:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-03 23:10 [PATCH 0/2] UAPI: Extra preparatory patches David Howells
2012-10-03 23:10 ` David Howells [this message]
2012-10-03 23:10 ` [PATCH 2/2] UAPI: Split compound conditionals containing __KERNEL__ in Arm64 David Howells
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