asm-generic: Unify uapi bitsperlong.h for arm64, riscv and loongarch

Now we specify the minimal version of GCC as 5.1 and Clang/LLVM as 11.0.0
in Documentation/process/changes.rst, __CHAR_BIT__ and __SIZEOF_LONG__ are
usable, it is probably fine to unify the definition of __BITS_PER_LONG as
(__CHAR_BIT__ * __SIZEOF_LONG__) in asm-generic uapi bitsperlong.h.

In order to keep safe and avoid regression, only unify uapi bitsperlong.h
for some archs such as arm64, riscv and loongarch which are using newer
toolchains that have the definitions of __CHAR_BIT__ and __SIZEOF_LONG__.

Suggested-by: Xi Ruoyao <xry111@xry111.site>
Link: https://lore.kernel.org/all/d3e255e4746de44c9903c4433616d44ffcf18d1b.camel@xry111.site/
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/linux-arch/a3a4f48a-07d4-4ed9-bc53-5d383428bdd2@app.fastmail.com/
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 0 insertions, 47 deletions

diff --git a/tools/arch/arm64/include/uapi/asm/bitsperlong.h b/tools/arch/arm64/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 485d60bee26c..000000000000
--- a/tools/arch/arm64/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * Copyright (C) 2012 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#ifndef __ASM_BITSPERLONG_H
-#define __ASM_BITSPERLONG_H
-
-#define __BITS_PER_LONG 64
-
-#include <asm-generic/bitsperlong.h>
-
-#endif	/* __ASM_BITSPERLONG_H */
diff --git a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h b/tools/arch/loongarch/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 00b4ba1e5cdf..000000000000
--- a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef __ASM_LOONGARCH_BITSPERLONG_H
-#define __ASM_LOONGARCH_BITSPERLONG_H
-
-#define __BITS_PER_LONG (__SIZEOF_LONG__ * 8)
-
-#include <asm-generic/bitsperlong.h>
-
-#endif /* __ASM_LOONGARCH_BITSPERLONG_H */
diff --git a/tools/arch/riscv/include/uapi/asm/bitsperlong.h b/tools/arch/riscv/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 0b9b58b57ff6..000000000000
--- a/tools/arch/riscv/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2012 ARM Ltd.
- * Copyright (C) 2015 Regents of the University of California
- */
-
-#ifndef _UAPI_ASM_RISCV_BITSPERLONG_H
-#define _UAPI_ASM_RISCV_BITSPERLONG_H
-
-#define __BITS_PER_LONG (__SIZEOF_POINTER__ * 8)
-
-#include <asm-generic/bitsperlong.h>
-
-#endif /* _UAPI_ASM_RISCV_BITSPERLONG_H */