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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2024-07-16 22:14:59 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-08-02 16:13:46 +0200 |
| commit | 2dce993165088dbe728faa21547e3b74213b6732 (patch) | |
| tree | 643bc4b7314b4c6e4fb58dea51827b4705d208bb /kernel/cpu.c | |
| parent | c0e81a455e23f77683178b8ae32651df5841f065 (diff) | |
| download | lwn-2dce993165088dbe728faa21547e3b74213b6732.tar.gz lwn-2dce993165088dbe728faa21547e3b74213b6732.zip | |
cpu/hotplug: Provide weak fallback for arch_cpuhp_init_parallel_bringup()
CONFIG_HOTPLUG_PARALLEL expects the architecture to implement
arch_cpuhp_init_parallel_bringup() to decide whether paralllel hotplug is
possible and to do the necessary architecture specific initialization.
There are architectures which can enable it unconditionally and do not
require architecture specific initialization.
Provide a weak fallback for arch_cpuhp_init_parallel_bringup() so that
such architectures are not forced to implement empty stub functions.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240716-loongarch-hotplug-v3-2-af59b3bb35c8@flygoat.com
Diffstat (limited to 'kernel/cpu.c')
| -rw-r--r-- | kernel/cpu.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index c89e0e91379a..16323610cd20 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -1829,6 +1829,11 @@ static inline const struct cpumask *cpuhp_get_primary_thread_mask(void) } #endif +bool __weak arch_cpuhp_init_parallel_bringup(void) +{ + return true; +} + /* * On architectures which have enabled parallel bringup this invokes all BP * prepare states for each of the to be onlined APs first. The last state |