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authorVlastimil Babka <vbabka@suse.cz>2018-08-14 23:38:57 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-08-15 17:37:34 +0200
commit3b39dc7463a9867208f68de91f665c2d996f2806 (patch)
treee61cc21dac9623be639b108764a4a23e87eaaab0
parentabf914eefa19098727455f11acd895c57621a822 (diff)
x86/smp: fix non-SMP broken build due to redefinition of apic_id_is_primary_thread
commit d0055f351e647f33f3b0329bff022213bf8aa085 upstream. The function has an inline "return false;" definition with CONFIG_SMP=n but the "real" definition is also visible leading to "redefinition of ‘apic_id_is_primary_thread’" compiler error. Guard it with #ifdef CONFIG_SMP Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Fixes: 6a4d2657e048 ("x86/smp: Provide topology_is_primary_thread()") Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/x86/kernel/apic/apic.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 4c3bd1527b93..3b3a2d0af78d 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2193,6 +2193,7 @@ static int cpuid_to_apicid[] = {
[0 ... NR_CPUS - 1] = -1,
};
+#ifdef CONFIG_SMP
/**
* apic_id_is_primary_thread - Check whether APIC ID belongs to a primary thread
* @id: APIC ID to check
@@ -2207,6 +2208,7 @@ bool apic_id_is_primary_thread(unsigned int apicid)
mask = (1U << (fls(smp_num_siblings) - 1)) - 1;
return !(apicid & mask);
}
+#endif
/*
* Should use this API to allocate logical CPU IDs to keep nr_logical_cpuids