linux/include/acpi/acpi_numa.h
Wei Liu 4f0455cf6f ACPI / NUMA: add a stub function for node_to_pxm()
There is already a stub function for pxm_to_node but conversion to the
other direction is missing.

It will be used by Microsoft Hypervisor code later.

Signed-off-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20210203150435.27941-9-wei.liu@kernel.org
2021-02-11 08:47:06 +00:00

47 lines
969 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ACPI_NUMA_H
#define __ACPI_NUMA_H
#ifdef CONFIG_ACPI_NUMA
#include <linux/kernel.h>
#include <linux/numa.h>
/* Proximity bitmap length */
#if MAX_NUMNODES > 256
#define MAX_PXM_DOMAINS MAX_NUMNODES
#else
#define MAX_PXM_DOMAINS (256) /* Old pxm spec is defined 8 bit */
#endif
extern int pxm_to_node(int);
extern int node_to_pxm(int);
extern int acpi_map_pxm_to_node(int);
extern unsigned char acpi_srat_revision;
extern void disable_srat(void);
extern void bad_srat(void);
extern int srat_disabled(void);
#else /* CONFIG_ACPI_NUMA */
static inline void disable_srat(void)
{
}
static inline int pxm_to_node(int pxm)
{
return 0;
}
static inline int node_to_pxm(int node)
{
return 0;
}
#endif /* CONFIG_ACPI_NUMA */
#ifdef CONFIG_ACPI_HMAT
extern void disable_hmat(void);
#else /* CONFIG_ACPI_HMAT */
static inline void disable_hmat(void)
{
}
#endif /* CONFIG_ACPI_HMAT */
#endif /* __ACP_NUMA_H */