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| author |   Thomas Gleixner <tglx@linutronix.de> | 2018-06-06 00:53:57 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-06-21 14:20:59 +0200 |
| commit | 545401f4448a807b963ff17b575e0a393e68b523 (patch) | |
| tree | 94e6d8abf65a072eee51839813b1100e86b05df6 /arch/x86/kernel/cpu/cpu.h | |
| parent | x86/cpu/AMD: Remove the pointless detect_ht() call (diff) | |
| download | linux-dev-545401f4448a807b963ff17b575e0a393e68b523.tar.xz linux-dev-545401f4448a807b963ff17b575e0a393e68b523.zip | |
x86/cpu/common: Provide detect_ht_early()
To support force disabling of SMT it's required to know the number of
thread siblings early. detect_ht() 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 38216f678fc3..898da0b974e2 100644 --- a/arch/x86/kernel/cpu/cpu.h +++ b/arch/x86/kernel/cpu/cpu.h @@ -56,6 +56,7 @@ extern void init_amd_cacheinfo(struct cpuinfo_x86 *c); extern void detect_num_cpu_cores(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); unsigned int aperfmperf_get_khz(int cpu); |