From: Sergei Shtylyov <sergei.shtylyov@gmail.com>
To: Tiezhu Yang <yangtiezhu@loongson.cn>,
Luc Van Oostenryck <luc.vanoostenryck@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>
Cc: linux-sparse@vger.kernel.org, netdev@vger.kernel.org,
bpf@vger.kernel.org, clang-built-linux@googlegroups.com,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
Xuefeng Li <lixuefeng@loongson.cn>
Subject: Re: [PATCH 2/2] compiler.h: Include asm/rwonce.h under ARM64 and ALPHA to fix build errors
Date: Thu, 14 Jan 2021 11:40:39 +0300 [thread overview]
Message-ID: <04749e2c-6e80-5316-a575-e4aaf780bb81@gmail.com> (raw)
In-Reply-To: <1610535453-2352-3-git-send-email-yangtiezhu@loongson.cn>
Hello!
On 13.01.2021 13:57, Tiezhu Yang wrote:
> When make M=samples/bpf on the Loongson 3A3000 platform which
> belongs to MIPS arch, there exists many similar build errors
> about 'asm/rwonce.h' file not found, so include it only under
> CONFIG_ARM64 and CONFIG_ALPHA due to it exists only in arm64
> and alpha arch.
>
> CLANG-bpf samples/bpf/xdpsock_kern.o
> In file included from samples/bpf/xdpsock_kern.c:2:
> In file included from ./include/linux/bpf.h:9:
> In file included from ./include/linux/workqueue.h:9:
> In file included from ./include/linux/timer.h:5:
> In file included from ./include/linux/list.h:9:
> In file included from ./include/linux/kernel.h:10:
> ./include/linux/compiler.h:246:10: fatal error: 'asm/rwonce.h' file not found
> ^~~~~~~~~~~~~~
> 1 error generated.
>
> $ find . -name rwonce.h
> ./include/asm-generic/rwonce.h
> ./arch/arm64/include/asm/rwonce.h
> ./arch/alpha/include/asm/rwonce.h
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
> ---
> include/linux/compiler.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/include/linux/compiler.h b/include/linux/compiler.h
> index b8fe0c2..bdbe759 100644
> --- a/include/linux/compiler.h
> +++ b/include/linux/compiler.h
> @@ -243,6 +243,12 @@ static inline void *offset_to_ptr(const int *off)
> */
> #define prevent_tail_call_optimization() mb()
>
> +#ifdef CONFIG_ARM64
Why not #if defined(CONFIG_ALPHA) || defined(CONFIG_ARM64)?
> #include <asm/rwonce.h>
> +#endif
> +
> +#ifdef CONFIG_ALPHA
> +#include <asm/rwonce.h>
> +#endif
>
> #endif /* __LINUX_COMPILER_H */
>
MBR, Sergei
next prev parent reply other threads:[~2021-01-14 8:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-13 10:57 [PATCH 0/2] Fix build errors and warnings when make M=samples/bpf Tiezhu Yang
2021-01-13 10:57 ` [PATCH bpf 1/2] samples/bpf: Set flag __SANE_USERSPACE_TYPES__ for MIPS to fix build warnings Tiezhu Yang
2021-01-13 17:12 ` Yonghong Song
2021-01-18 3:22 ` Tiezhu Yang
2021-01-18 18:44 ` Yonghong Song
2021-01-13 10:57 ` [PATCH 2/2] compiler.h: Include asm/rwonce.h under ARM64 and ALPHA to fix build errors Tiezhu Yang
2021-01-13 17:14 ` Yonghong Song
2021-01-18 9:25 ` Tiezhu Yang
2021-01-14 8:40 ` Sergei Shtylyov [this message]
2021-01-13 17:16 ` [PATCH 0/2] Fix build errors and warnings when make M=samples/bpf Yonghong Song
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