bounds.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Generate definitions needed by the preprocessor.
 4 * This code generates raw asm output which is post-processed
 5 * to extract and format the required data.
 6 */
 7
 8#define __GENERATING_BOUNDS_H
 9#define COMPILE_OFFSETS
10/* Include headers that define the enum constants of interest */
11#include <linux/page-flags.h>
12#include <linux/mmzone.h>
13#include <linux/kbuild.h>
14#include <linux/log2.h>
15#include <linux/spinlock_types.h>
16
17int main(void)
18{
19	/* The enum constants to put into include/generated/bounds.h */
20	DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS);
21	DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES);
22#ifdef CONFIG_SMP
23	DEFINE(NR_CPUS_BITS, order_base_2(CONFIG_NR_CPUS));
24#endif
25	DEFINE(SPINLOCK_SIZE, sizeof(spinlock_t));
26#ifdef CONFIG_LRU_GEN
27	DEFINE(LRU_GEN_WIDTH, order_base_2(MAX_NR_GENS + 1));
28	DEFINE(__LRU_REFS_WIDTH, MAX_NR_TIERS - 2);
29#else
30	DEFINE(LRU_GEN_WIDTH, 0);
31	DEFINE(__LRU_REFS_WIDTH, 0);
32#endif
33	/* End of constants */
34
35	return 0;
36}