Commit c0e81a45 authored by Jiaxun Yang's avatar Jiaxun Yang Committed by Thomas Gleixner
Browse files

cpu/hotplug: Make HOTPLUG_PARALLEL independent of HOTPLUG_SMT 



Provide stub functions for SMT related parallel bring up functions so that
HOTPLUG_PARALLEL can work without HOTPLUG_SMT.

Signed-off-by: default avatarJiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240716-loongarch-hotplug-v3-1-af59b3bb35c8@flygoat.com
parent 8400291e

kernel/cpu.c

+11 −0
Original line number Diff line number Diff line
@@ -1808,6 +1808,7 @@ static int __init parallel_bringup_parse_param(char *arg) 
}

early_param("cpuhp.parallel", parallel_bringup_parse_param);



#ifdef CONFIG_HOTPLUG_SMT

static inline bool cpuhp_smt_aware(void)

{

	return cpu_smt_max_threads > 1;
@@ -1817,6 +1818,16 @@ static inline const struct cpumask *cpuhp_get_primary_thread_mask(void) 
{

	return cpu_primary_thread_mask;

}

#else

static inline bool cpuhp_smt_aware(void)

{

	return false;

}

static inline const struct cpumask *cpuhp_get_primary_thread_mask(void)

{

	return cpu_none_mask;

}

#endif



/*

 * On architectures which have enabled parallel bringup this invokes all BP