Re: [PATCH RFC 08/22] drivers: base: Implement weak arch_unregister_cpu()
From: Shaoqin Huang <hidden>
Date: 2023-11-09 10:52:46
Also in:
kvmarm, linux-arch, linux-arm-kernel, linux-doc, linux-pm, linux-riscv, lkml, loongarch
On 11/7/23 18:29, Russell King (Oracle) wrote:
From: James Morse <james.morse@arm.com> Add arch_unregister_cpu() to allow the ACPI machinery to call unregister_cpu(). This is enough for arm64, riscv and loongarch, but needs to be overridden by x86 and ia64 who need to do more work. CC: Jean-Philippe Brucker <redacted> Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Shaoqin Huang <redacted>
quoted hunk ↗ jump to hunk
--- Changes since v1: * Added CONFIG_HOTPLUG_CPU ifdeffery around unregister_cpu Changes since RFC v2: * Move earlier in the series --- drivers/base/cpu.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 579064fda97b..58bb86091b34 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c@@ -531,7 +531,14 @@ int __weak arch_register_cpu(int cpu) { return register_cpu(&per_cpu(cpu_devices, cpu), cpu); } -#endif + +#ifdef CONFIG_HOTPLUG_CPU +void __weak arch_unregister_cpu(int num) +{ + unregister_cpu(&per_cpu(cpu_devices, num)); +} +#endif /* CONFIG_HOTPLUG_CPU */ +#endif /* CONFIG_GENERIC_CPU_DEVICES */ static void __init cpu_dev_register_generic(void) {
-- Shaoqin