1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 /* Data structures shared between BPF and tools. */ 3 #ifndef UTIL_BPF_SKEL_LOCK_DATA_H 4 #define UTIL_BPF_SKEL_LOCK_DATA_H 5 6 struct contention_key { 7 u32 stack_id; 8 u32 pid; 9 u64 lock_addr; 10 }; 11 12 #define TASK_COMM_LEN 16 13 14 struct contention_task_data { 15 char comm[TASK_COMM_LEN]; 16 }; 17 18 /* 19 * Upper bits of the flags in the contention_data are used to identify 20 * some well-known locks which do not have symbols (non-global locks). 21 */ 22 #define LCD_F_MMAP_LOCK (1U << 31) 23 #define LCD_F_SIGHAND_LOCK (1U << 30) 24 25 #define LCB_F_MAX_FLAGS (1U << 7) 26 27 struct contention_data { 28 u64 total_time; 29 u64 min_time; 30 u64 max_time; 31 u32 count; 32 u32 flags; 33 }; 34 35 enum lock_aggr_mode { 36 LOCK_AGGR_ADDR = 0, 37 LOCK_AGGR_TASK, 38 LOCK_AGGR_CALLER, 39 }; 40 41 enum lock_class_sym { 42 LOCK_CLASS_NONE, 43 LOCK_CLASS_RQLOCK, 44 }; 45 46 #endif /* UTIL_BPF_SKEL_LOCK_DATA_H */ 47