Hi Babu,
On 8/22/2022 6:43 AM, Babu Moger wrote:
> diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
> index 6c38427b71a2..36ad97ab7342 100644
> --- a/arch/x86/kernel/cpu/resctrl/core.c
> +++ b/arch/x86/kernel/cpu/resctrl/core.c
> @@ -253,6 +253,37 @@ static bool __rdt_get_mem_config_amd(struct rdt_resource *r)
> return true;
> }
>
> +static bool __rdt_get_s_mem_config_amd(struct rdt_resource *r)
> +{
> + struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r);
> + union cpuid_0x10_3_eax eax;
> + union cpuid_0x10_x_edx edx;
> + u32 ebx, ecx;
> +
> + cpuid_count(0x80000020, 2, &eax.full, &ebx, &ecx, &edx.full);
> + hw_res->num_closid = edx.split.cos_max + 1;
> + r->default_ctrl = MAX_MBA_BW_AMD;
> +
> + /* AMD does not use delay */
> + r->membw.delay_linear = false;
> + r->membw.arch_needs_linear = false;
> +
> + /*
> + * AMD does not use memory delay throttle model to control
> + * the allocation like Intel does.
> + */
> + r->membw.throttle_mode = THREAD_THROTTLE_UNDEFINED;
> + r->membw.min_bw = 0;
> + r->membw.bw_gran = 1;
> + /* Max value is 2048, Data width should be 4 in decimal */
> + r->data_width = 4;
> +
> + r->alloc_capable = true;
> + r->alloc_enabled = true;
> +
> + return true;
> +}
> +
>From what I can tell this new function is almost identical to (it differs with
one character from) __rdt_get_mem_config_amd(). Could it be refactored to
avoid such duplication?
Reinette
