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 17 int 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 } 37