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| author |   Vlastimil Babka <vbabka@suse.cz> | 2018-08-14 23:38:57 +0200 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-14 15:00:00 -0700 |
| commit | d0055f351e647f33f3b0329bff022213bf8aa085 (patch) | |
| tree | 5149192eeb49f92c313b359dad13710222463cf7 /arch | |
| parent | cpu/hotplug: Non-SMP machines do not make use of booted_once (diff) | |
| download | linux-dev-d0055f351e647f33f3b0329bff022213bf8aa085.tar.xz linux-dev-d0055f351e647f33f3b0329bff022213bf8aa085.zip | |
x86/smp: fix non-SMP broken build due to redefinition of apic_id_is_primary_thread
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 87ff6235bbfe..84132eddb5a8 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 |