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platform/x86/amd: hfi: Set ITMT priority from ranking data

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The static ranking data that is read at module load should be used
to set up the priorities for the cores relative to the performance
values.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/20250609200518.3616080-12-superm1@kernel.org
This commit is contained in:
Mario Limonciello
2025-06-09 15:05:16 -05:00
committed by Borislav Petkov (AMD)
parent bfea2b3b4f
commit 216fe0d768
2 changed files with 11 additions and 0 deletions
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1
drivers/platform/x86/amd/hfi/Kconfig
View File

@@ -7,6 +7,7 @@ config AMD_HFI
bool "AMD Hetero Core Hardware Feedback Driver"
depends on ACPI
depends on CPU_SUP_AMD
depends on SCHED_MC_PRIO
help
Select this option to enable the AMD Heterogeneous Core Hardware
Feedback Interface. If selected, hardware provides runtime thread

10
drivers/platform/x86/amd/hfi/hfi.c
View File

@@ -114,6 +114,12 @@ static DEFINE_PER_CPU(struct amd_hfi_cpuinfo, amd_hfi_cpuinfo) = {.class_index =
static DEFINE_MUTEX(hfi_cpuinfo_lock);
static void amd_hfi_sched_itmt_work(struct work_struct *work)
{
sched_set_itmt_support();
}
static DECLARE_WORK(sched_amd_hfi_itmt_work, amd_hfi_sched_itmt_work);
static int find_cpu_index_by_apicid(unsigned int target_apicid)
{
int cpu_index;
@@ -238,6 +244,8 @@ static int amd_set_hfi_ipcc_score(struct amd_hfi_cpuinfo *hfi_cpuinfo, int cpu)
WRITE_ONCE(hfi_cpuinfo->ipcc_scores[i],
hfi_cpuinfo->amd_hfi_classes[i].perf);
sched_set_itmt_core_prio(hfi_cpuinfo->ipcc_scores[0], cpu);
return 0;
}
@@ -459,6 +467,8 @@ static int amd_hfi_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
schedule_work(&sched_amd_hfi_itmt_work);
return 0;
}