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| author | Thomas Gleixner <tglx@linutronix.de> | 2018-06-06 00:55:39 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-06-21 14:20:59 +0200 |
| commit | 95f3d39ccf7aaea79d1ffdac1c887c2e100ec1b6 (patch) | |
| tree | 08b45e1ee3bfa2a8be91b6c0aa55521bbeaddb35 /arch/x86/kernel/cpu/cpu.h | |
| parent | 545401f4448a807b963ff17b575e0a393e68b523 (diff) | |
| download | blackbird-obmc-linux-95f3d39ccf7aaea79d1ffdac1c887c2e100ec1b6.tar.gz blackbird-obmc-linux-95f3d39ccf7aaea79d1ffdac1c887c2e100ec1b6.zip | |
x86/cpu/topology: Provide detect_extended_topology_early()
To support force disabling of SMT it's required to know the number of
thread siblings early. detect_extended_topology() cannot be called before
the APIC driver is selected, so split out the part which initializes
smp_num_siblings.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu/cpu.h')
| -rw-r--r-- | arch/x86/kernel/cpu/cpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h index 898da0b974e2..e59c0ea82a33 100644 --- a/arch/x86/kernel/cpu/cpu.h +++ b/arch/x86/kernel/cpu/cpu.h @@ -55,6 +55,7 @@ extern void init_intel_cacheinfo(struct cpuinfo_x86 *c); extern void init_amd_cacheinfo(struct cpuinfo_x86 *c); extern void detect_num_cpu_cores(struct cpuinfo_x86 *c); +extern int detect_extended_topology_early(struct cpuinfo_x86 *c); extern int detect_extended_topology(struct cpuinfo_x86 *c); extern int detect_ht_early(struct cpuinfo_x86 *c); extern void detect_ht(struct cpuinfo_x86 *c); |
