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/* Include headers that define the enum constants of interest */
10#include <linux/page-flags.h>
11#include <linux/mmzone.h>
12#include <linux/kbuild.h>
13#include <linux/log2.h>
14#include <linux/spinlock_types.h>
15
16int main(void)
17{
18	/* The enum constants to put into include/generated/bounds.h */
19	DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS);
20	DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES);
21#ifdef CONFIG_SMP
22	DEFINE(NR_CPUS_BITS, bits_per(CONFIG_NR_CPUS));
23#endif
24	DEFINE(SPINLOCK_SIZE, sizeof(spinlock_t));
25#ifdef CONFIG_LRU_GEN
26	DEFINE(LRU_GEN_WIDTH, order_base_2(MAX_NR_GENS + 1));
27	DEFINE(__LRU_REFS_WIDTH, MAX_NR_TIERS - 2);
28#else
29	DEFINE(LRU_GEN_WIDTH, 0);
30	DEFINE(__LRU_REFS_WIDTH, 0);
31#endif
32	/* End of constants */
33
34	return 0;
35}
36