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Message-ID: <d0a45b83-06e9-4fc6-ab90-070dd90964dd@rivosinc.com>
Date: Mon, 26 Aug 2024 10:18:13 +0200
From: Clément Léger <cleger@...osinc.com>
To: Jesse Taube <jesse@...osinc.com>, linux-riscv@...ts.infradead.org
Cc: Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
Conor Dooley <conor@...nel.org>, Evan Green <evan@...osinc.com>,
Charlie Jenkins <charlie@...osinc.com>,
Andrew Jones <ajones@...tanamicro.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] RISC-V: hwprobe: Use BIT macro to avoid warnings
On 22/08/2024 22:39, Jesse Taube wrote:
> In uapi/asm/hwprobe.h file, (1 << N) is used to define the bit field
> which causes checkpatch to warn. Use BIT(N) and BIT_ULL(N) to avoid
> these warnings.
>
> Signed-off-by: Jesse Taube <jesse@...osinc.com>
> Reviewed-by: Charlie Jenkins <charlie@...osinc.com>
> Tested-by: Charlie Jenkins <charlie@...osinc.com>
> ---
> V1 -> V2:
> - Reword commit message
> ---
> arch/riscv/include/uapi/asm/hwprobe.h | 102 +++++++++++++-------------
> 1 file changed, 51 insertions(+), 51 deletions(-)
>
> diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h
> index b706c8e47b02..d0874ff2fd37 100644
> --- a/arch/riscv/include/uapi/asm/hwprobe.h
> +++ b/arch/riscv/include/uapi/asm/hwprobe.h
> @@ -21,57 +21,57 @@ struct riscv_hwprobe {
> #define RISCV_HWPROBE_KEY_MARCHID 1
> #define RISCV_HWPROBE_KEY_MIMPID 2
> #define RISCV_HWPROBE_KEY_BASE_BEHAVIOR 3
> -#define RISCV_HWPROBE_BASE_BEHAVIOR_IMA (1 << 0)
> +#define RISCV_HWPROBE_BASE_BEHAVIOR_IMA BIT_ULL(0)
> #define RISCV_HWPROBE_KEY_IMA_EXT_0 4
> -#define RISCV_HWPROBE_IMA_FD (1 << 0)
> -#define RISCV_HWPROBE_IMA_C (1 << 1)
> -#define RISCV_HWPROBE_IMA_V (1 << 2)
> -#define RISCV_HWPROBE_EXT_ZBA (1 << 3)
> -#define RISCV_HWPROBE_EXT_ZBB (1 << 4)
> -#define RISCV_HWPROBE_EXT_ZBS (1 << 5)
> -#define RISCV_HWPROBE_EXT_ZICBOZ (1 << 6)
> -#define RISCV_HWPROBE_EXT_ZBC (1 << 7)
> -#define RISCV_HWPROBE_EXT_ZBKB (1 << 8)
> -#define RISCV_HWPROBE_EXT_ZBKC (1 << 9)
> -#define RISCV_HWPROBE_EXT_ZBKX (1 << 10)
> -#define RISCV_HWPROBE_EXT_ZKND (1 << 11)
> -#define RISCV_HWPROBE_EXT_ZKNE (1 << 12)
> -#define RISCV_HWPROBE_EXT_ZKNH (1 << 13)
> -#define RISCV_HWPROBE_EXT_ZKSED (1 << 14)
> -#define RISCV_HWPROBE_EXT_ZKSH (1 << 15)
> -#define RISCV_HWPROBE_EXT_ZKT (1 << 16)
> -#define RISCV_HWPROBE_EXT_ZVBB (1 << 17)
> -#define RISCV_HWPROBE_EXT_ZVBC (1 << 18)
> -#define RISCV_HWPROBE_EXT_ZVKB (1 << 19)
> -#define RISCV_HWPROBE_EXT_ZVKG (1 << 20)
> -#define RISCV_HWPROBE_EXT_ZVKNED (1 << 21)
> -#define RISCV_HWPROBE_EXT_ZVKNHA (1 << 22)
> -#define RISCV_HWPROBE_EXT_ZVKNHB (1 << 23)
> -#define RISCV_HWPROBE_EXT_ZVKSED (1 << 24)
> -#define RISCV_HWPROBE_EXT_ZVKSH (1 << 25)
> -#define RISCV_HWPROBE_EXT_ZVKT (1 << 26)
> -#define RISCV_HWPROBE_EXT_ZFH (1 << 27)
> -#define RISCV_HWPROBE_EXT_ZFHMIN (1 << 28)
> -#define RISCV_HWPROBE_EXT_ZIHINTNTL (1 << 29)
> -#define RISCV_HWPROBE_EXT_ZVFH (1 << 30)
> -#define RISCV_HWPROBE_EXT_ZVFHMIN (1ULL << 31)
> -#define RISCV_HWPROBE_EXT_ZFA (1ULL << 32)
> -#define RISCV_HWPROBE_EXT_ZTSO (1ULL << 33)
> -#define RISCV_HWPROBE_EXT_ZACAS (1ULL << 34)
> -#define RISCV_HWPROBE_EXT_ZICOND (1ULL << 35)
> -#define RISCV_HWPROBE_EXT_ZIHINTPAUSE (1ULL << 36)
> -#define RISCV_HWPROBE_EXT_ZVE32X (1ULL << 37)
> -#define RISCV_HWPROBE_EXT_ZVE32F (1ULL << 38)
> -#define RISCV_HWPROBE_EXT_ZVE64X (1ULL << 39)
> -#define RISCV_HWPROBE_EXT_ZVE64F (1ULL << 40)
> -#define RISCV_HWPROBE_EXT_ZVE64D (1ULL << 41)
> -#define RISCV_HWPROBE_EXT_ZIMOP (1ULL << 42)
> -#define RISCV_HWPROBE_EXT_ZCA (1ULL << 43)
> -#define RISCV_HWPROBE_EXT_ZCB (1ULL << 44)
> -#define RISCV_HWPROBE_EXT_ZCD (1ULL << 45)
> -#define RISCV_HWPROBE_EXT_ZCF (1ULL << 46)
> -#define RISCV_HWPROBE_EXT_ZCMOP (1ULL << 47)
> -#define RISCV_HWPROBE_EXT_ZAWRS (1ULL << 48)
> +#define RISCV_HWPROBE_IMA_FD BIT_ULL(0)
> +#define RISCV_HWPROBE_IMA_C BIT_ULL(1)
> +#define RISCV_HWPROBE_IMA_V BIT_ULL(2)
> +#define RISCV_HWPROBE_EXT_ZBA BIT_ULL(3)
> +#define RISCV_HWPROBE_EXT_ZBB BIT_ULL(4)
> +#define RISCV_HWPROBE_EXT_ZBS BIT_ULL(5)
> +#define RISCV_HWPROBE_EXT_ZICBOZ BIT_ULL(6)
> +#define RISCV_HWPROBE_EXT_ZBC BIT_ULL(7)
> +#define RISCV_HWPROBE_EXT_ZBKB BIT_ULL(8)
> +#define RISCV_HWPROBE_EXT_ZBKC BIT_ULL(9)
> +#define RISCV_HWPROBE_EXT_ZBKX BIT_ULL(10)
> +#define RISCV_HWPROBE_EXT_ZKND BIT_ULL(11)
> +#define RISCV_HWPROBE_EXT_ZKNE BIT_ULL(12)
> +#define RISCV_HWPROBE_EXT_ZKNH BIT_ULL(13)
> +#define RISCV_HWPROBE_EXT_ZKSED BIT_ULL(14)
> +#define RISCV_HWPROBE_EXT_ZKSH BIT_ULL(15)
> +#define RISCV_HWPROBE_EXT_ZKT BIT_ULL(16)
> +#define RISCV_HWPROBE_EXT_ZVBB BIT_ULL(17)
> +#define RISCV_HWPROBE_EXT_ZVBC BIT_ULL(18)
> +#define RISCV_HWPROBE_EXT_ZVKB BIT_ULL(19)
> +#define RISCV_HWPROBE_EXT_ZVKG BIT_ULL(20)
> +#define RISCV_HWPROBE_EXT_ZVKNED BIT_ULL(21)
> +#define RISCV_HWPROBE_EXT_ZVKNHA BIT_ULL(22)
> +#define RISCV_HWPROBE_EXT_ZVKNHB BIT_ULL(23)
> +#define RISCV_HWPROBE_EXT_ZVKSED BIT_ULL(24)
> +#define RISCV_HWPROBE_EXT_ZVKSH BIT_ULL(25)
> +#define RISCV_HWPROBE_EXT_ZVKT BIT_ULL(26)
> +#define RISCV_HWPROBE_EXT_ZFH BIT_ULL(27)
> +#define RISCV_HWPROBE_EXT_ZFHMIN BIT_ULL(28)
> +#define RISCV_HWPROBE_EXT_ZIHINTNTL BIT_ULL(29)
> +#define RISCV_HWPROBE_EXT_ZVFH BIT_ULL(30)
> +#define RISCV_HWPROBE_EXT_ZVFHMIN BIT_ULL(31)
> +#define RISCV_HWPROBE_EXT_ZFA BIT_ULL(32)
> +#define RISCV_HWPROBE_EXT_ZTSO BIT_ULL(33)
> +#define RISCV_HWPROBE_EXT_ZACAS BIT_ULL(34)
> +#define RISCV_HWPROBE_EXT_ZICOND BIT_ULL(35)
> +#define RISCV_HWPROBE_EXT_ZIHINTPAUSE BIT_ULL(36)
> +#define RISCV_HWPROBE_EXT_ZVE32X BIT_ULL(37)
> +#define RISCV_HWPROBE_EXT_ZVE32F BIT_ULL(38)
> +#define RISCV_HWPROBE_EXT_ZVE64X BIT_ULL(39)
> +#define RISCV_HWPROBE_EXT_ZVE64F BIT_ULL(40)
> +#define RISCV_HWPROBE_EXT_ZVE64D BIT_ULL(41)
> +#define RISCV_HWPROBE_EXT_ZIMOP BIT_ULL(42)
> +#define RISCV_HWPROBE_EXT_ZCA BIT_ULL(43)
> +#define RISCV_HWPROBE_EXT_ZCB BIT_ULL(44)
> +#define RISCV_HWPROBE_EXT_ZCD BIT_ULL(45)
> +#define RISCV_HWPROBE_EXT_ZCF BIT_ULL(46)
> +#define RISCV_HWPROBE_EXT_ZCMOP BIT_ULL(47)
> +#define RISCV_HWPROBE_EXT_ZAWRS BIT_ULL(48)$
Hi Jessie,
If I remember correctly, files that are in include/uapi/ should not used
defines that are in include/linux/. In that case, _BITULL() should be
used instead of BIT_ULL() (from include/uapi/linux/const.h)
Thanks,
Clément
> #define RISCV_HWPROBE_KEY_CPUPERF_0 5
> #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
> #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
> @@ -85,6 +85,6 @@ struct riscv_hwprobe {
> /* Increase RISCV_HWPROBE_MAX_KEY when adding items. */
>
> /* Flags */
> -#define RISCV_HWPROBE_WHICH_CPUS (1 << 0)
> +#define RISCV_HWPROBE_WHICH_CPUS BIT(0)
>
> #endif
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