From c0e81a455e23f77683178b8ae32651df5841f065 Mon Sep 17 00:00:00 2001 From: Jiaxun Yang Date: Tue, 16 Jul 2024 22:14:58 +0800 Subject: [PATCH] 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: Jiaxun Yang Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20240716-loongarch-hotplug-v3-1-af59b3bb35c8@flygoat.com --- kernel/cpu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/kernel/cpu.c b/kernel/cpu.c index 1209ddaec026..c89e0e91379a 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -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