Hey Jeremy,
Quick comment below.
On 10/12/2017 1:48 PM, Jeremy Linton wrote:
+static int topology_setup_acpi_cpu(struct acpi_table_header *table,
+ unsigned int cpu, int level)
+{
+ struct acpi_pptt_processor *cpu_node;
+ u32 acpi_cpu_id = acpi_cpu_get_madt_gicc(cpu)->uid;
This lookup for the acpi id is architecture dependent. Can you use a
function that would work for any user of PPTT and MADT? It may require
writing and exporting the inverse lookup of the function
acpi_get_cpuid() which is exported from processor_core.c
+
+ cpu_node = acpi_find_processor_node(table, acpi_cpu_id);
+ if (cpu_node) {
+ cpu_node = acpi_find_processor_package_id(table, cpu_node, level);
+ /* Only the first level has a guaranteed id */
+ if (level == 0)
+ return cpu_node->acpi_processor_id;
+ return (int)((u8 *)cpu_node - (u8 *)table);
+ }
+ pr_err_once("PPTT table found, but unable to locate core for %d\n",
+ cpu);
+ return -ENOENT;
+}
--
Austin Christ
Qualcomm Datacenter Technologies as an affiliate of Qualcomm
Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
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