Revision 1ce42845f987e92eabfc6e026d44d826c25c74a5 authored by Linus Torvalds on 11 February 2017, 18:31:46 UTC, committed by Linus Torvalds on 11 February 2017, 18:31:46 UTC
Pull x86 fixes from Ingo Molnar:
"Last minute x86 fixes:
- Fix a softlockup detector warning and long delays if using ptdump
with KASAN enabled.
- Two more TSC-adjust fixes for interesting firmware interactions.
- Two commits to fix an AMD CPU topology enumeration bug that caused
a measurable gaming performance regression"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/ptdump: Fix soft lockup in page table walker
x86/tsc: Make the TSC ADJUST sanitizing work for tsc_reliable
x86/tsc: Avoid the large time jump when sanitizing TSC ADJUST
x86/CPU/AMD: Fix Zen SMT topology
x86/CPU/AMD: Bring back Compute Unit ID
lcm.c
#include <linux/compiler.h>
#include <linux/gcd.h>
#include <linux/export.h>
#include <linux/lcm.h>
/* Lowest common multiple */
unsigned long lcm(unsigned long a, unsigned long b)
{
if (a && b)
return (a / gcd(a, b)) * b;
else
return 0;
}
EXPORT_SYMBOL_GPL(lcm);
unsigned long lcm_not_zero(unsigned long a, unsigned long b)
{
unsigned long l = lcm(a, b);
if (l)
return l;
return (b ? : a);
}
EXPORT_SYMBOL_GPL(lcm_not_zero);
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