Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751080AbWC2J3t (ORCPT ); Wed, 29 Mar 2006 04:29:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751030AbWC2J3t (ORCPT ); Wed, 29 Mar 2006 04:29:49 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:22895 "EHLO mailout1.samsung.com") by vger.kernel.org with ESMTP id S1751080AbWC2J3s (ORCPT ); Wed, 29 Mar 2006 04:29:48 -0500 Date: Wed, 29 Mar 2006 18:29:57 +0900 From: "Hyok S. Choi" Subject: [PATCH 2.6.16-git] defines MMU mode specific syscalls as 'cond_syscall' and clean-up unneeded macros To: linux-kernel@vger.kernel.org Cc: David Howells , Russell King - ARM Linux , Andrew Morton Message-id: <200603291829.57719.hyok.choi@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 7BIT Content-disposition: inline User-Agent: KMail/1.8.3 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3823 Lines: 126 From: Hyok S. Choi For some architectures, a few syscalls are not linked in noMMU mode. In that case, the MMU depending syscalls are needed to be defined as 'cond_syscall'. For example, ARM architecture selectively links sys_mlock by the mode configuration. In case of FRV, it has been managed by #ifdef CONFIG_MMU macro in arch/frv/kernel/entry.S. However these conditional macros are just duplicates if they were defined as cond_syscall. Compilation test is done with FRV toolchains for both of MMU and noMMU mode. Signed-off-by: Hyok S. Choi --- arch/frv/kernel/entry.S | 26 ++++++++++---------------- kernel/sys_ni.c | 12 ++++++++++++ 2 files changed, 22 insertions(+), 16 deletions(-) diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S index 1d21c8d..a9b5952 100644 --- a/arch/frv/kernel/entry.S +++ b/arch/frv/kernel/entry.S @@ -1170,12 +1170,6 @@ __syscall_badsys: # syscall vector table # ############################################################################### -#ifdef CONFIG_MMU -#define __MMU(X) X -#else -#define __MMU(X) sys_ni_syscall -#endif - .section .rodata ALIGN .globl sys_call_table @@ -1305,7 +1299,7 @@ sys_call_table: .long sys_newuname .long sys_ni_syscall /* old "cacheflush" */ .long sys_adjtimex - .long __MMU(sys_mprotect) /* 125 */ + .long sys_mprotect /* 125 */ .long sys_sigprocmask .long sys_ni_syscall /* old "create_module" */ .long sys_init_module @@ -1324,16 +1318,16 @@ sys_call_table: .long sys_getdents .long sys_select .long sys_flock - .long __MMU(sys_msync) + .long sys_msync .long sys_readv /* 145 */ .long sys_writev .long sys_getsid .long sys_fdatasync .long sys_sysctl - .long __MMU(sys_mlock) /* 150 */ - .long __MMU(sys_munlock) - .long __MMU(sys_mlockall) - .long __MMU(sys_munlockall) + .long sys_mlock /* 150 */ + .long sys_munlock + .long sys_mlockall + .long sys_munlockall .long sys_sched_setparam .long sys_sched_getparam /* 155 */ .long sys_sched_setscheduler @@ -1343,7 +1337,7 @@ sys_call_table: .long sys_sched_get_priority_min /* 160 */ .long sys_sched_rr_get_interval .long sys_nanosleep - .long __MMU(sys_mremap) + .long sys_mremap .long sys_setresuid16 .long sys_getresuid16 /* 165 */ .long sys_ni_syscall /* for vm86 */ @@ -1398,8 +1392,8 @@ sys_call_table: .long sys_setfsuid /* 215 */ .long sys_setfsgid .long sys_pivot_root - .long __MMU(sys_mincore) - .long __MMU(sys_madvise) + .long sys_mincore + .long sys_madvise .long sys_getdents64 /* 220 */ .long sys_fcntl64 .long sys_ni_syscall /* reserved for TUX */ @@ -1437,7 +1431,7 @@ sys_call_table: .long sys_epoll_create .long sys_epoll_ctl /* 255 */ .long sys_epoll_wait - .long __MMU(sys_remap_file_pages) + .long sys_remap_file_pages .long sys_set_tid_address .long sys_timer_create .long sys_timer_settime /* 260 */ diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index d82864c..5433195 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -120,3 +120,15 @@ cond_syscall(sys32_sysctl); cond_syscall(ppc_rtas); cond_syscall(sys_spu_run); cond_syscall(sys_spu_create); + +/* mmu depending weak syscall entries */ +cond_syscall(sys_mprotect); +cond_syscall(sys_msync); +cond_syscall(sys_mlock); +cond_syscall(sys_munlock); +cond_syscall(sys_mlockall); +cond_syscall(sys_munlockall); +cond_syscall(sys_mincore); +cond_syscall(sys_madvise); +cond_syscall(sys_mremap); +cond_syscall(sys_remap_file_pages); -- Hyok ARM Linux 2.6 MPU/noMMU Project http://opensrc.sec.samsung.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/