33 #ifndef __RTE_LRU_ARM64_H__ 34 #define __RTE_LRU_ARM64_H__ 43 #ifndef RTE_TABLE_HASH_LRU_STRATEGY 44 #ifdef RTE_MACHINE_CPUFLAG_NEON 45 #define RTE_TABLE_HASH_LRU_STRATEGY 3 47 #define RTE_TABLE_HASH_LRU_STRATEGY 1 51 #if RTE_TABLE_HASH_LRU_STRATEGY == 3 53 #define lru_init(bucket) \ 54 { bucket->lru_list = ~0LLU; } 57 f_lru_pos(uint64_t lru_list)
60 uint16x4_t lru_vec = vld1_u16((uint16_t *)&lru_list);
61 uint16x4_t min_vec = vmov_n_u16(vminv_u16(lru_vec));
62 uint64_t mask = vget_lane_u64(vreinterpret_u64_u16(
63 vceq_u16(min_vec, lru_vec)), 0);
64 return __builtin_clzl(mask) >> 4;
66 #define lru_pos(bucket) f_lru_pos(bucket->lru_list) 68 #define lru_update(bucket, mru_val) \ 70 const uint64_t orvals[] = {0xFFFFLLU, 0xFFFFLLU << 16, \ 71 0xFFFFLLU << 32, 0xFFFFLLU << 48, 0LLU}; \ 72 const uint64_t decs[] = {0x1000100010001LLU, 0}; \ 73 uint64x1_t lru = vdup_n_u64(bucket->lru_list); \ 74 uint64x1_t vdec = vdup_n_u64(decs[mru_val>>2]); \ 75 bucket->lru_list = vget_lane_u64(vreinterpret_u64_u16( \ 76 vsub_u16(vreinterpret_u16_u64(lru), \ 77 vreinterpret_u16_u64(vdec))), \ 79 bucket->lru_list |= orvals[mru_val]; \