From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
anup.patel@wdc.com, gregkh@linuxfoundation.org,
liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org,
wangjunqiang@iscas.ac.cn, hch@infradead.org
Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-csky@vger.kernel.org, linux-s390@vger.kernel.org,
sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
inux-parisc@vger.kernel.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V2 02/17] fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT
Date: Tue, 28 Dec 2021 22:39:43 +0800 [thread overview]
Message-ID: <20211228143958.3409187-3-guoren@kernel.org> (raw)
In-Reply-To: <20211228143958.3409187-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
RISC-V doesn't neeed compat_stat, so using __ARCH_WANT_COMPAT_STAT
to exclude unnecessary SYSCALL functions.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
---
arch/arm64/include/asm/unistd.h | 1 +
arch/mips/include/asm/unistd.h | 2 ++
arch/parisc/include/asm/unistd.h | 1 +
arch/powerpc/include/asm/unistd.h | 1 +
arch/s390/include/asm/unistd.h | 1 +
arch/sparc/include/asm/unistd.h | 1 +
arch/x86/include/asm/unistd.h | 1 +
fs/stat.c | 2 +-
8 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
index 6bdb5f5db438..bc2c4c55bae6 100644
--- a/arch/arm64/include/asm/unistd.h
+++ b/arch/arm64/include/asm/unistd.h
@@ -3,6 +3,7 @@
* Copyright (C) 2012 ARM Ltd.
*/
#ifdef CONFIG_COMPAT
+#define __ARCH_WANT_COMPAT_STAT
#define __ARCH_WANT_COMPAT_STAT64
#define __ARCH_WANT_SYS_GETHOSTNAME
#define __ARCH_WANT_SYS_PAUSE
diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h
index c2196b1b6604..25a5253db7f4 100644
--- a/arch/mips/include/asm/unistd.h
+++ b/arch/mips/include/asm/unistd.h
@@ -50,6 +50,8 @@
# ifdef CONFIG_32BIT
# define __ARCH_WANT_STAT64
# define __ARCH_WANT_SYS_TIME32
+# else
+# define __ARCH_WANT_COMPAT_STAT
# endif
# ifdef CONFIG_MIPS32_O32
# define __ARCH_WANT_SYS_TIME32
diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h
index cd438e4150f6..14e0668184cb 100644
--- a/arch/parisc/include/asm/unistd.h
+++ b/arch/parisc/include/asm/unistd.h
@@ -168,6 +168,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
#define __ARCH_WANT_SYS_CLONE
#define __ARCH_WANT_SYS_CLONE3
#define __ARCH_WANT_COMPAT_SYS_SENDFILE
+#define __ARCH_WANT_COMPAT_STAT
#ifdef CONFIG_64BIT
#define __ARCH_WANT_SYS_TIME
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index 5eb462af6766..b1129b4ef57d 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -44,6 +44,7 @@
#define __ARCH_WANT_SYS_TIME
#define __ARCH_WANT_SYS_UTIME
#define __ARCH_WANT_SYS_NEWFSTATAT
+#define __ARCH_WANT_COMPAT_STAT
#define __ARCH_WANT_COMPAT_SYS_SENDFILE
#endif
#define __ARCH_WANT_SYS_FORK
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 9e9f75ef046a..4260bc5ce7f8 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -28,6 +28,7 @@
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK
# ifdef CONFIG_COMPAT
+# define __ARCH_WANT_COMPAT_STAT
# define __ARCH_WANT_SYS_TIME32
# define __ARCH_WANT_SYS_UTIME32
# endif
diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h
index 1e66278ba4a5..d6bc76706a7a 100644
--- a/arch/sparc/include/asm/unistd.h
+++ b/arch/sparc/include/asm/unistd.h
@@ -46,6 +46,7 @@
#define __ARCH_WANT_SYS_TIME
#define __ARCH_WANT_SYS_UTIME
#define __ARCH_WANT_COMPAT_SYS_SENDFILE
+#define __ARCH_WANT_COMPAT_STAT
#endif
#ifdef __32bit_syscall_numbers__
diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h
index 80e9d5206a71..761173ccc33c 100644
--- a/arch/x86/include/asm/unistd.h
+++ b/arch/x86/include/asm/unistd.h
@@ -22,6 +22,7 @@
# include <asm/unistd_32_ia32.h>
# define __ARCH_WANT_SYS_TIME
# define __ARCH_WANT_SYS_UTIME
+# define __ARCH_WANT_COMPAT_STAT
# define __ARCH_WANT_COMPAT_SYS_PREADV64
# define __ARCH_WANT_COMPAT_SYS_PWRITEV64
# define __ARCH_WANT_COMPAT_SYS_PREADV64V2
diff --git a/fs/stat.c b/fs/stat.c
index 28d2020ba1f4..ffdeb9065d53 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -639,7 +639,7 @@ SYSCALL_DEFINE5(statx,
return do_statx(dfd, filename, flags, mask, buffer);
}
-#ifdef CONFIG_COMPAT
+#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_STAT)
static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
{
struct compat_stat tmp;
--
2.25.1
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next prev parent reply other threads:[~2021-12-28 14:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-28 14:39 [PATCH V2 00/17] riscv: compat: Add COMPAT mode support for rv64 guoren
2021-12-28 14:39 ` [PATCH V2 01/17] kconfig: Add SYSVIPC_COMPAT for all architectures guoren
2022-01-10 11:43 ` Arnd Bergmann
2021-12-28 14:39 ` guoren [this message]
2022-01-10 11:44 ` [PATCH V2 02/17] fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT Arnd Bergmann
2021-12-28 14:39 ` [PATCH V2 03/17] asm-generic: fcntl: compat: Remove duplicate definitions guoren
2022-01-10 13:35 ` Arnd Bergmann
2022-01-10 16:30 ` Christoph Hellwig
2022-01-11 2:43 ` Guo Ren
2022-01-10 15:56 ` Christophe Leroy
2021-12-28 14:39 ` [PATCH V2 04/17] asm-generic: compat: Cleanup " guoren
2021-12-28 14:39 ` [PATCH V2 05/17] syscalls: compat: Fix the missing part for __SYSCALL_COMPAT guoren
2021-12-28 14:39 ` [PATCH V2 06/17] riscv: Fixup difference with defconfig guoren
2021-12-28 14:39 ` [PATCH V2 07/17] riscv: compat: Add basic compat date type implementation guoren
2021-12-28 14:39 ` [PATCH V2 08/17] riscv: compat: Re-implement TASK_SIZE for COMPAT_32BIT guoren
2021-12-28 14:39 ` [PATCH V2 09/17] riscv: compat: syscall: Add compat_sys_call_table implementation guoren
2021-12-28 14:39 ` [PATCH V2 10/17] riscv: compat: syscall: Add entry.S implementation guoren
2021-12-28 14:39 ` [PATCH V2 11/17] riscv: compat: Add elf.h implementation guoren
2022-01-10 14:28 ` Arnd Bergmann
2022-01-11 2:42 ` Guo Ren
2021-12-28 14:39 ` [PATCH V2 12/17] riscv: compat: vdso: Add rv32 VDSO base code implementation guoren
2021-12-28 14:39 ` [PATCH V2 13/17] riscv: compat: vdso: Add setup additional pages implementation guoren
2021-12-28 14:39 ` [PATCH V2 14/17] riscv: compat: signal: Add rt_frame implementation guoren
2021-12-28 14:39 ` [PATCH V2 15/17] riscv: compat: ptrace: Add compat_arch_ptrace implement guoren
2021-12-28 14:39 ` [PATCH V2 16/17] riscv: compat: Add UXL_32 support in start_thread guoren
2021-12-28 14:39 ` [PATCH V2 17/17] riscv: compat: Add COMPAT Kbuild skeletal support guoren
2022-01-20 7:39 ` [PATCH V2 00/17] riscv: compat: Add COMPAT mode support for rv64 guoren
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