OpenCloudOS-Kernel/arch/x86/pci/mp_bus_to_node.c

24 lines
430 B
C

#include <linux/pci.h>
#include <linux/init.h>
#include <linux/topology.h>
#define BUS_NR 256
static unsigned char mp_bus_to_node[BUS_NR];
void set_mp_bus_to_node(int busnum, int node)
{
if (busnum >= 0 && busnum < BUS_NR)
mp_bus_to_node[busnum] = (unsigned char) node;
}
int get_mp_bus_to_node(int busnum)
{
int node;
if (busnum < 0 || busnum > (BUS_NR - 1))
return 0;
node = mp_bus_to_node[busnum];
return node;
}