x86, tsc, apic: Unbreak static (MSR) calibration when CONFIG_X86_LOCAL_APIC=n

If we aren't going to use the local APIC anyway, we obviously don't
care about its timer frequency.

Link: http://lkml.kernel.org/r/tip-rgm7xmg7k6qnjlw3ynkcjsmh@git.kernel.org
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Bin Gao <bin.gao@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c
index c502772..8b5434f 100644 (file)
--- a/arch/x86/kernel/tsc_msr.c
+++ b/arch/x86/kernel/tsc_msr.c
@@ -118,8 +118,10 @@ int try_msr_calibrate_tsc(unsigned long *fast_calibrate)
        *fast_calibrate = freq * ratio;
        pr_info("TSC runs at %lu KHz\n", *fast_calibrate);
 
+#ifdef CONFIG_X86_LOCAL_APIC
        lapic_timer_frequency = (freq * 1000) / HZ;
        pr_info("lapic_timer_frequency = %d\n", lapic_timer_frequency);
+#endif
 
        return 1;
 }