[PATCH RFC 3/6] riscv: perf: Add Control Transfer Records extension parsing

[Conor Dooley]

On Wed, May 29, 2024 at 07:53:34PM +0100, Rajnesh Kanwal wrote:
> Adding CTR extension in ISA extension map to lookup for extension
> availability.
> 
> Signed-off-by: Rajnesh Kanwal <rkanwal at rivosinc.com>

Same comment here about $subject.

You're also missing dt-bindings for the extension.

Thanks,
Conor.

> ---
>  arch/riscv/include/asm/hwcap.h | 4 ++++
>  arch/riscv/kernel/cpufeature.c | 2 ++
>  2 files changed, 6 insertions(+)
> 
> diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
> index b8cc459ee8a4..aff5ef398671 100644
> --- a/arch/riscv/include/asm/hwcap.h
> +++ b/arch/riscv/include/asm/hwcap.h
> @@ -86,6 +86,8 @@
>  #define RISCV_ISA_EXT_SSCCFG            77
>  #define RISCV_ISA_EXT_SMCDELEG          78
>  #define RISCV_ISA_EXT_SMCNTRPMF         79
> +#define RISCV_ISA_EXT_SMCTR             80
> +#define RISCV_ISA_EXT_SSCTR             81
>  
>  #define RISCV_ISA_EXT_XLINUXENVCFG	127
>  
> @@ -95,9 +97,11 @@
>  #ifdef CONFIG_RISCV_M_MODE
>  #define RISCV_ISA_EXT_SxAIA		RISCV_ISA_EXT_SMAIA
>  #define RISCV_ISA_EXT_SxCSRIND		RISCV_ISA_EXT_SMCSRIND
> +#define RISCV_ISA_EXT_SxCTR		RISCV_ISA_EXT_SMCTR
>  #else
>  #define RISCV_ISA_EXT_SxAIA		RISCV_ISA_EXT_SSAIA
>  #define RISCV_ISA_EXT_SxCSRIND		RISCV_ISA_EXT_SSCSRIND
> +#define RISCV_ISA_EXT_SxCTR		RISCV_ISA_EXT_SSCTR
>  #endif
>  
>  #endif /* _ASM_RISCV_HWCAP_H */
> diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> index d1fb6a8c5492..4334d822b2f2 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -298,6 +298,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
>  	__RISCV_ISA_EXT_DATA(zvkt, RISCV_ISA_EXT_ZVKT),
>  	__RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA),
>  	__RISCV_ISA_EXT_DATA(smcdeleg, RISCV_ISA_EXT_SMCDELEG),
> +	__RISCV_ISA_EXT_DATA(smctr, RISCV_ISA_EXT_SMCTR),
>  	__RISCV_ISA_EXT_DATA(smstateen, RISCV_ISA_EXT_SMSTATEEN),
>  	__RISCV_ISA_EXT_DATA(smcntrpmf, RISCV_ISA_EXT_SMCNTRPMF),
>  	__RISCV_ISA_EXT_DATA(smcsrind, RISCV_ISA_EXT_SMCSRIND),
> @@ -305,6 +306,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
>  	__RISCV_ISA_EXT_DATA(sscsrind, RISCV_ISA_EXT_SSCSRIND),
>  	__RISCV_ISA_EXT_DATA(ssccfg, RISCV_ISA_EXT_SSCCFG),
>  	__RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF),
> +	__RISCV_ISA_EXT_DATA(ssctr, RISCV_ISA_EXT_SSCTR),
>  	__RISCV_ISA_EXT_DATA(sstc, RISCV_ISA_EXT_SSTC),
>  	__RISCV_ISA_EXT_DATA(svinval, RISCV_ISA_EXT_SVINVAL),
>  	__RISCV_ISA_EXT_DATA(svnapot, RISCV_ISA_EXT_SVNAPOT),
> -- 
> 2.34.1
> 
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