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Date: Mon, 18 Mar 2024 09:15:03 -0700 (PDT)
Subject:     Re: [PATCH v1] perf: starfive: fix 64-bit only COMPILE_TEST condition
In-Reply-To: <20240318-emphatic-rally-f177a4fe1bdc@spud>
CC: linux-riscv@lists.infradead.org, Conor Dooley <conor@kernel.org>,
  Conor Dooley <conor.dooley@microchip.com>, Will Deacon <will@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
  jisheng.teoh@starfivetech.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
From: Palmer Dabbelt <palmer@rivosinc.com>
To: Conor Dooley <conor@kernel.org>
Message-ID: <mhng-abf741db-9f86-4803-b143-2948e9a099af@palmer-ri-x1c9>
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On Mon, 18 Mar 2024 08:35:04 PDT (-0700), Conor Dooley wrote:
> From: Conor Dooley <conor.dooley@microchip.com>
>
> ARCH_STARFIVE is not restricted to 64-bit platforms, so while Will's
> addition of a 64-bit only condition satisfied the build robots doing
> COMPILE_TEST builds, Palmer ran into the same problems with writeq()
> being undefined during regular rv32 builds.
>
> Promote the dependency on 64-bit to its own `depends on` so that the
> driver can never be included in 32-bit builds.
>
> Reported-by: Palmer Dabbelt <palmer@rivosinc.com>
> Fixes: c2b24812f7bc ("perf: starfive: Add StarLink PMU support")
> Fixes: f0dbc6d0de38 ("perf: starfive: Only allow COMPILE_TEST for 64-bit architectures")
> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
> ---
> CC: Will Deacon <will@kernel.org>
> CC: Mark Rutland <mark.rutland@arm.com>
> CC: Ji Sheng Teoh <jisheng.teoh@starfivetech.com>
> CC: linux-arm-kernel@lists.infradead.org
> CC: linux-kernel@vger.kernel.org
> ---
>  drivers/perf/Kconfig | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/perf/Kconfig b/drivers/perf/Kconfig
> index 5060e1f1ea10..7526a9e714fa 100644
> --- a/drivers/perf/Kconfig
> +++ b/drivers/perf/Kconfig
> @@ -87,7 +87,8 @@ config RISCV_PMU_SBI
>  	  filtering, counter configuration.
>
>  config STARFIVE_STARLINK_PMU
> -	depends on ARCH_STARFIVE || (COMPILE_TEST && 64BIT)
> +	depends on ARCH_STARFIVE || COMPILE_TEST
> +	depends on 64BIT
>  	bool "StarFive StarLink PMU"
>  	help
>  	   Provide support for StarLink Performance Monitor Unit.

Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>