diff options
| author | James Morse <james.morse@arm.com> | 2021-03-29 18:28:35 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-12-11 09:43:16 +0000 |
| commit | 53516157c42358227f4fd37b301e171410926aa6 (patch) | |
| tree | bfee8c6eb40a0cf5f22c75ff16e4f90861773bcf /drivers/base/cpu.c | |
| parent | fbeed8a3503f8d3bdbc1fecdc46a2d23ff937c7b (diff) | |
ACPI: processor: Register all CPUs from acpi_processor_get_info()
To allow ACPI to skip the call to arch_register_cpu() when the _STA
value indicates the CPU can't be brought online right now, move the
arch_register_cpu() call into acpi_processor_get_info().
Systems can still be booted with 'acpi=off', or not include an
ACPI description at all. For these, the CPUs continue to be
registered by cpu_dev_register_generic().
This moves the CPU register logic back to a subsys_initcall(),
while the memory nodes will have been registered earlier.
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com>
Tested-by: Jianyong Wu <jianyong.wu@arm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
Changes since RFC v2:
* Fixup comment in acpi_processor_get_info() (Gavin Shan)
* Add comment in cpu_dev_register_generic() (Gavin Shan)
Diffstat (limited to 'drivers/base/cpu.c')
| -rw-r--r-- | drivers/base/cpu.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 47de0f140ba6..13d052bf13f4 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -553,7 +553,11 @@ static void __init cpu_dev_register_generic(void) { int i, ret; - if (!IS_ENABLED(CONFIG_GENERIC_CPU_DEVICES)) + /* + * When ACPI is enabled, CPUs are registered via + * acpi_processor_get_info(). + */ + if (!IS_ENABLED(CONFIG_GENERIC_CPU_DEVICES) || !acpi_disabled) return; for_each_present_cpu(i) { |