diff options
| author | James Morse <james.morse@arm.com> | 2021-07-02 15:47:38 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-01-31 16:29:17 +0000 |
| commit | f54786e7421919ad8e227a85c82f5f987c96923e (patch) | |
| tree | 87a93a003c9721c31af4bc52250b1b4b04998e61 /include/linux/acpi.h | |
| parent | db8c82afeb9c3bc57de8532fe6e3a3e2c0296a0d (diff) | |
ACPI: Rename ACPI_HOTPLUG_CPU to include 'present'
The code behind ACPI_HOTPLUG_CPU allows a not-present CPU to become
present. This isn't the only use of HOTPLUG_CPU. On arm64 and riscv
CPUs can be taken offline as a power saving measure.
On arm64 an offline CPU may be disabled by firmware, preventing it from
being brought back online, but it remains present throughout.
Adding code to prevent user-space trying to online these disabled CPUs
needs some additional terminology.
Rename the Kconfig symbol CONFIG_ACPI_HOTPLUG_PRESENT_CPU to reflect
that it makes possible CPUs present.
HOTPLUG_CPU is untouched as this is only about the ACPI mechanism.
Signed-off-by: James Morse <james.morse@arm.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>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
Changes since RFC v2:
* Add Loongarch update
Changes since RFC v3:
* Dropped ia64 changes
Changes since RFC v3 (smaller series):
* Corrected indentation
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index cf018d42e632..18d1537c08db 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -646,7 +646,7 @@ static inline u32 acpi_osc_ctx_get_cxl_control(struct acpi_osc_context *context) #define ACPI_GSB_ACCESS_ATTRIB_RAW_PROCESS 0x0000000F /* Enable _OST when all relevant hotplug operations are enabled */ -#if defined(CONFIG_ACPI_HOTPLUG_CPU) && \ +#if defined(CONFIG_ACPI_HOTPLUG_PRESENT_CPU) && \ defined(CONFIG_ACPI_HOTPLUG_MEMORY) && \ defined(CONFIG_ACPI_CONTAINER) #define ACPI_HOTPLUG_OST |