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Message-Id: <20240705-loongarch-hotplug-v1-2-67d9c4709aa9@flygoat.com>
Date: Fri, 05 Jul 2024 11:29:38 +0800
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Peter Zijlstra <peterz@...radead.org>, Huacai Chen <chenhuacai@...nel.org>,
WANG Xuerui <kernel@...0n.name>
Cc: linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev,
Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH 2/3] cpu/hotplug: Weak fallback for
arch_cpuhp_init_parallel_bringup
It is a general assumption that architectures entitled to parallel
bringup with CONFIG_HOTPLUG_PARALLEL do expect parallel bringup to
be available.
Provide a weak fallback arch_cpuhp_init_parallel_bringup function
to match this assumption.
Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
kernel/cpu.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 2ab3f68a1bb1..c925d0f4b0c8 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1820,6 +1820,11 @@ 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
--
2.45.2
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