linux-kernel - Re: [Patch v2 1/3] perf arch: Update arch headers to use relative UAPI paths

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Message-ID: <a97ff1d6-7712-4315-95ff-4079ffc752f7@linux.intel.com>
Date: Tue, 27 Jan 2026 20:37:48 +0800
From: "Mi, Dapeng" <dapeng1.mi@...ux.intel.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
 Arnaldo Carvalho de Melo <acme@...nel.org>,
 Namhyung Kim <namhyung@...nel.org>, Ian Rogers <irogers@...gle.com>,
 Adrian Hunter <adrian.hunter@...el.com>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>,
 James Clark <james.clark@...aro.org>, Mike Leach <mike.leach@...aro.org>,
 Guo Ren <guoren@...nel.org>, Paul Walmsley <pjw@...nel.org>,
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Alexandre Ghiti <alex@...ti.fr>
Cc: linux-perf-users@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-csky@...r.kernel.org, linux-riscv@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Zide Chen <zide.chen@...el.com>,
 Falcon Thomas <thomas.falcon@...el.com>, Dapeng Mi <dapeng1.mi@...el.com>,
 Xudong Hao <xudong.hao@...el.com>
Subject: Re: [Patch v2 1/3] perf arch: Update arch headers to use relative
 UAPI paths


On 1/27/2026 3:02 PM, Dapeng Mi wrote:
> The architectural specific headers perf_regs.h currently rely on the
> host architecture's 'asm/perf_regs.h'. This can lead to compilation
> inconsistencies or failures when including and building perf for a
> target architecture that differs from the host's architecture.
>
> Explicitly point to the UAPI headers within the tools source tree using
> relative paths. This ensures that perf is always built against the
> intended architecture.
>
> No functional changes are intended.
>
> Signed-off-by: Dapeng Mi <dapeng1.mi@...ux.intel.com>
> ---
>  tools/perf/arch/arm/include/perf_regs.h       | 2 +-
>  tools/perf/arch/arm64/include/perf_regs.h     | 2 +-
>  tools/perf/arch/csky/include/perf_regs.h      | 1 +
>  tools/perf/arch/loongarch/include/perf_regs.h | 2 +-
>  tools/perf/arch/mips/include/perf_regs.h      | 2 +-
>  tools/perf/arch/powerpc/include/perf_regs.h   | 2 +-
>  tools/perf/arch/riscv/include/perf_regs.h     | 2 +-
>  tools/perf/arch/s390/include/perf_regs.h      | 2 +-
>  tools/perf/arch/x86/include/perf_regs.h       | 2 +-
>  9 files changed, 9 insertions(+), 8 deletions(-)
>
> diff --git a/tools/perf/arch/arm/include/perf_regs.h b/tools/perf/arch/arm/include/perf_regs.h
> index 75ce1c370114..20c54766e3a0 100644
> --- a/tools/perf/arch/arm/include/perf_regs.h
> +++ b/tools/perf/arch/arm/include/perf_regs.h
> @@ -4,7 +4,7 @@
>  
>  #include <stdlib.h>
>  #include <linux/types.h>
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/arm/include/uapi/asm/perf_regs.h"
>  
>  void perf_regs_load(u64 *regs);
>  
> diff --git a/tools/perf/arch/arm64/include/perf_regs.h b/tools/perf/arch/arm64/include/perf_regs.h
> index 58639ee9f7ea..372f2565a9dd 100644
> --- a/tools/perf/arch/arm64/include/perf_regs.h
> +++ b/tools/perf/arch/arm64/include/perf_regs.h
> @@ -5,7 +5,7 @@
>  #include <stdlib.h>
>  #include <linux/types.h>
>  #define perf_event_arm_regs perf_event_arm64_regs
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/arm64/include/uapi/asm/perf_regs.h"
>  #undef perf_event_arm_regs
>  
>  void perf_regs_load(u64 *regs);
> diff --git a/tools/perf/arch/csky/include/perf_regs.h b/tools/perf/arch/csky/include/perf_regs.h
> index 076c7746c8a2..9520e6aa319e 100644
> --- a/tools/perf/arch/csky/include/perf_regs.h
> +++ b/tools/perf/arch/csky/include/perf_regs.h
> @@ -7,6 +7,7 @@
>  #include <stdlib.h>
>  #include <linux/types.h>
>  #include <asm/perf_regs.h>

Oops, the above line was not removed. Would remove it in next version.


> +#include "../../../../arch/csky/include/uapi/asm/perf_regs.h"
>  
>  #define PERF_REGS_MASK	((1ULL << PERF_REG_CSKY_MAX) - 1)
>  #define PERF_REGS_MAX	PERF_REG_CSKY_MAX
> diff --git a/tools/perf/arch/loongarch/include/perf_regs.h b/tools/perf/arch/loongarch/include/perf_regs.h
> index 45c799fa5330..b86078a55e90 100644
> --- a/tools/perf/arch/loongarch/include/perf_regs.h
> +++ b/tools/perf/arch/loongarch/include/perf_regs.h
> @@ -4,7 +4,7 @@
>  
>  #include <stdlib.h>
>  #include <linux/types.h>
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/loongarch/include/uapi/asm/perf_regs.h"
>  
>  #define PERF_REGS_MAX PERF_REG_LOONGARCH_MAX
>  
> diff --git a/tools/perf/arch/mips/include/perf_regs.h b/tools/perf/arch/mips/include/perf_regs.h
> index 7082e91e0ed1..66655f0c4fea 100644
> --- a/tools/perf/arch/mips/include/perf_regs.h
> +++ b/tools/perf/arch/mips/include/perf_regs.h
> @@ -4,7 +4,7 @@
>  
>  #include <stdlib.h>
>  #include <linux/types.h>
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/mips/include/uapi/asm/perf_regs.h"
>  
>  #define PERF_REGS_MAX PERF_REG_MIPS_MAX
>  
> diff --git a/tools/perf/arch/powerpc/include/perf_regs.h b/tools/perf/arch/powerpc/include/perf_regs.h
> index 1c66f6ba6773..22b492a3dd58 100644
> --- a/tools/perf/arch/powerpc/include/perf_regs.h
> +++ b/tools/perf/arch/powerpc/include/perf_regs.h
> @@ -4,7 +4,7 @@
>  
>  #include <stdlib.h>
>  #include <linux/types.h>
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/powerpc/include/uapi/asm/perf_regs.h"
>  
>  void perf_regs_load(u64 *regs);
>  
> diff --git a/tools/perf/arch/riscv/include/perf_regs.h b/tools/perf/arch/riscv/include/perf_regs.h
> index d482edb413e5..89d5bbb8d2b8 100644
> --- a/tools/perf/arch/riscv/include/perf_regs.h
> +++ b/tools/perf/arch/riscv/include/perf_regs.h
> @@ -6,7 +6,7 @@
>  
>  #include <stdlib.h>
>  #include <linux/types.h>
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/riscv/include/uapi/asm/perf_regs.h"
>  
>  #define PERF_REGS_MASK	((1ULL << PERF_REG_RISCV_MAX) - 1)
>  #define PERF_REGS_MAX	PERF_REG_RISCV_MAX
> diff --git a/tools/perf/arch/s390/include/perf_regs.h b/tools/perf/arch/s390/include/perf_regs.h
> index 130dfad2b96a..9c95589965fe 100644
> --- a/tools/perf/arch/s390/include/perf_regs.h
> +++ b/tools/perf/arch/s390/include/perf_regs.h
> @@ -3,7 +3,7 @@
>  
>  #include <stdlib.h>
>  #include <linux/types.h>
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/s390/include/uapi/asm/perf_regs.h"
>  
>  void perf_regs_load(u64 *regs);
>  
> diff --git a/tools/perf/arch/x86/include/perf_regs.h b/tools/perf/arch/x86/include/perf_regs.h
> index f209ce2c1dd9..5495e5ca7cdc 100644
> --- a/tools/perf/arch/x86/include/perf_regs.h
> +++ b/tools/perf/arch/x86/include/perf_regs.h
> @@ -4,7 +4,7 @@
>  
>  #include <stdlib.h>
>  #include <linux/types.h>
> -#include <asm/perf_regs.h>
> +#include "../../../../arch/x86/include/uapi/asm/perf_regs.h"
>  
>  void perf_regs_load(u64 *regs);
>