Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) // Copyright(c) 2018 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #ifndef _MM_SHUFFLE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #define _MM_SHUFFLE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/jump_label.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define SHUFFLE_ORDER (MAX_ORDER-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifdef CONFIG_SHUFFLE_PAGE_ALLOCATOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) DECLARE_STATIC_KEY_FALSE(page_alloc_shuffle_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) extern void __shuffle_free_memory(pg_data_t *pgdat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) extern bool shuffle_pick_tail(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static inline void shuffle_free_memory(pg_data_t *pgdat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	if (!static_branch_unlikely(&page_alloc_shuffle_key))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	__shuffle_free_memory(pgdat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) extern void __shuffle_zone(struct zone *z);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static inline void shuffle_zone(struct zone *z)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	if (!static_branch_unlikely(&page_alloc_shuffle_key))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	__shuffle_zone(z);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static inline bool is_shuffle_order(int order)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	if (!static_branch_unlikely(&page_alloc_shuffle_key))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	return order >= SHUFFLE_ORDER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static inline bool shuffle_pick_tail(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static inline void shuffle_free_memory(pg_data_t *pgdat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static inline void shuffle_zone(struct zone *z)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static inline bool is_shuffle_order(int order)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif /* _MM_SHUFFLE_H */