From 269777aa530f3438ec1781586cdac0b5fe47b061 Mon Sep 17 00:00:00 2001
From: Abel Vesa <abelvesa@linux.com>
Date: Wed, 15 Aug 2018 00:26:00 +0300
Subject: cpu/hotplug: Non-SMP machines do not make use of booted_once
Commit 0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")
breaks non-SMP builds.
[ I suspect the 'bool' fields should just be made to be bitfields and be
exposed regardless of configuration, but that's a separate cleanup
that I'll leave to the owners of this file for later. - Linus ]
Fixes: 0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Abel Vesa <abelvesa@linux.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/cpu.c | 2 ++
1 file changed, 2 insertions(+)
(limited to 'kernel')
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 90ec528a6e32..ed44d7d34c2d 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -2278,6 +2278,8 @@ void __init boot_cpu_init(void)
*/
void __init boot_cpu_hotplug_init(void)
{
+#ifdef CONFIG_SMP
this_cpu_write(cpuhp_state.booted_once, true);
+#endif
this_cpu_write(cpuhp_state.state, CPUHP_ONLINE);
}
--
cgit