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
16 int 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, order_base_2(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
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