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From: Tiezhu Yang <yangtiezhu@loongson.cn>
To: Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>
Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
loongson-kernel@lists.loongnix.cn
Subject: [PATCH] tools/arch/loongarch: Use __SIZEOF_LONG__ to define
__BITS_PER_LONG
Date: Tue, 7 Mar 2023 15:39:01 +0800
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tools/arch/loongarch: Use __SIZEOF_LONG__ to define __BITS_PER_LONG
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Commit Message
Tiezhu Yang
March 7, 2023, 7:39 a.m. UTC
Although __SIZEOF_POINTER__ is equal with _SIZEOF_LONG__ on LoongArch,
it is better to use __SIZEOF_LONG__ to define __BITS_PER_LONG to keep
consistent between arch/loongarch/include/uapi/asm/bitsperlong.h and
tools/arch/loongarch/include/uapi/asm/bitsperlong.h.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
tools/arch/loongarch/include/uapi/asm/bitsperlong.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Comments
On Tue, 2023-03-07 at 15:39 +0800, Tiezhu Yang wrote: > Although __SIZEOF_POINTER__ is equal with _SIZEOF_LONG__ on LoongArch, > it is better to use __SIZEOF_LONG__ to define __BITS_PER_LONG to keep > consistent between arch/loongarch/include/uapi/asm/bitsperlong.h and > tools/arch/loongarch/include/uapi/asm/bitsperlong.h. I believe we should unify bitsperlong.h for all ports to use (__SIZEOF_LONG__ * 8). Now we specify GCC >= 5.1 or Clang (LLVM) >= 11.0.0 in min-tool-version.sh, where __SIZEOF_LONG__ is usable [1]. The only remaining compiler is ICC, which is deprecated and won't be supported for building the kernel after 6.3 [2]. [1]:https://gcc.godbolt.org/z/cnvW38vj6 [2]:https://www.phoronix.com/news/Linux-6.3-Drops-Intel-ICC > > Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> > --- > tools/arch/loongarch/include/uapi/asm/bitsperlong.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h > b/tools/arch/loongarch/include/uapi/asm/bitsperlong.h > index d4e32b3..00b4ba1 100644 > --- a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h > +++ b/tools/arch/loongarch/include/uapi/asm/bitsperlong.h > @@ -2,7 +2,7 @@ > #ifndef __ASM_LOONGARCH_BITSPERLONG_H > #define __ASM_LOONGARCH_BITSPERLONG_H > > -#define __BITS_PER_LONG (__SIZEOF_POINTER__ * 8) > +#define __BITS_PER_LONG (__SIZEOF_LONG__ * 8) > > #include <asm-generic/bitsperlong.h> >
diff --git a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h b/tools/arch/loongarch/include/uapi/asm/bitsperlong.h index d4e32b3..00b4ba1 100644 --- a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h +++ b/tools/arch/loongarch/include/uapi/asm/bitsperlong.h @@ -2,7 +2,7 @@ #ifndef __ASM_LOONGARCH_BITSPERLONG_H #define __ASM_LOONGARCH_BITSPERLONG_H -#define __BITS_PER_LONG (__SIZEOF_POINTER__ * 8) +#define __BITS_PER_LONG (__SIZEOF_LONG__ * 8) #include <asm-generic/bitsperlong.h>