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

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 <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Gautham R. Shenoy <[email protected]>
Acked-by: Ilpo Järvinen <[email protected]>
Link: https://lore.kernel.org/[email protected]

Author: superm1

drivers/platform/x86/amd/hfi/Kconfig

@@ -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

drivers/platform/x86/amd/hfi/hfi.c

@@ -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;
 }