linux-kernel - Re: [PATCH] perf tools: Copy uapi/asm/perf

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Date:   Tue, 1 Jun 2021 10:08:37 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH] perf tools: Copy uapi/asm/perf_regs.h from the kernel
 for MIPS

Em Tue, Jun 01, 2021 at 07:53:56PM +0800, Tiezhu Yang escreveu:
> To allow the build to complete on older systems, where those files are
> either not uptodate, lacking some recent additions or not present at
> all.
> 
> And check if the copy drifts from the kernel.
> 
> This commit is similar with
> commit 12f020338a2c ("tools: Copy uapi/asm/perf_regs.h from the kernel")
> 
> With this commit, we can avoid the following build error in any case:
> 
> tools/perf/arch/mips/include/perf_regs.h:7:10:
> fatal error: asm/perf_regs.h: No such file or directory
>  #include <asm/perf_regs.h>
>           ^~~~~~~~~~~~~~~~~
> compilation terminated.

Thanks, applied.

- Arnaldo

 
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
>  tools/arch/mips/include/uapi/asm/perf_regs.h | 40 ++++++++++++++++++++++++++++
>  tools/perf/Makefile.config                   |  1 -
>  tools/perf/check-headers.sh                  |  1 +
>  3 files changed, 41 insertions(+), 1 deletion(-)
>  create mode 100644 tools/arch/mips/include/uapi/asm/perf_regs.h
> 
> diff --git a/tools/arch/mips/include/uapi/asm/perf_regs.h b/tools/arch/mips/include/uapi/asm/perf_regs.h
> new file mode 100644
> index 0000000..d0f4ecd
> --- /dev/null
> +++ b/tools/arch/mips/include/uapi/asm/perf_regs.h
> @@ -0,0 +1,40 @@
> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> +#ifndef _ASM_MIPS_PERF_REGS_H
> +#define _ASM_MIPS_PERF_REGS_H
> +
> +enum perf_event_mips_regs {
> +	PERF_REG_MIPS_PC,
> +	PERF_REG_MIPS_R1,
> +	PERF_REG_MIPS_R2,
> +	PERF_REG_MIPS_R3,
> +	PERF_REG_MIPS_R4,
> +	PERF_REG_MIPS_R5,
> +	PERF_REG_MIPS_R6,
> +	PERF_REG_MIPS_R7,
> +	PERF_REG_MIPS_R8,
> +	PERF_REG_MIPS_R9,
> +	PERF_REG_MIPS_R10,
> +	PERF_REG_MIPS_R11,
> +	PERF_REG_MIPS_R12,
> +	PERF_REG_MIPS_R13,
> +	PERF_REG_MIPS_R14,
> +	PERF_REG_MIPS_R15,
> +	PERF_REG_MIPS_R16,
> +	PERF_REG_MIPS_R17,
> +	PERF_REG_MIPS_R18,
> +	PERF_REG_MIPS_R19,
> +	PERF_REG_MIPS_R20,
> +	PERF_REG_MIPS_R21,
> +	PERF_REG_MIPS_R22,
> +	PERF_REG_MIPS_R23,
> +	PERF_REG_MIPS_R24,
> +	PERF_REG_MIPS_R25,
> +	PERF_REG_MIPS_R26,
> +	PERF_REG_MIPS_R27,
> +	PERF_REG_MIPS_R28,
> +	PERF_REG_MIPS_R29,
> +	PERF_REG_MIPS_R30,
> +	PERF_REG_MIPS_R31,
> +	PERF_REG_MIPS_MAX = PERF_REG_MIPS_R31 + 1,
> +};
> +#endif /* _ASM_MIPS_PERF_REGS_H */
> diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
> index 406a951..73df23d 100644
> --- a/tools/perf/Makefile.config
> +++ b/tools/perf/Makefile.config
> @@ -90,7 +90,6 @@ endif
>  ifeq ($(ARCH),mips)
>    NO_PERF_REGS := 0
>    CFLAGS += -I$(OUTPUT)arch/mips/include/generated
> -  CFLAGS += -I../../arch/mips/include/uapi -I../../arch/mips/include/generated/uapi
>    LIBUNWIND_LIBS = -lunwind -lunwind-mips
>  endif
>  
> diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
> index dd8ff28..c783558 100755
> --- a/tools/perf/check-headers.sh
> +++ b/tools/perf/check-headers.sh
> @@ -39,6 +39,7 @@ arch/x86/lib/x86-opcode-map.txt
>  arch/x86/tools/gen-insn-attr-x86.awk
>  arch/arm/include/uapi/asm/perf_regs.h
>  arch/arm64/include/uapi/asm/perf_regs.h
> +arch/mips/include/uapi/asm/perf_regs.h
>  arch/powerpc/include/uapi/asm/perf_regs.h
>  arch/s390/include/uapi/asm/perf_regs.h
>  arch/x86/include/uapi/asm/perf_regs.h
> -- 
> 2.1.0
> 

-- 

- Arnaldo