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 tstamp_data { 7 u64 timestamp; 8 u64 lock; 9 u32 flags; 10 u32 stack_id; 11 }; 12 13 struct contention_key { 14 u32 stack_id; 15 u32 pid; 16 u64 lock_addr_or_cgroup; 17 }; 18 19 #define TASK_COMM_LEN 16 20 21 struct contention_task_data { 22 char comm[TASK_COMM_LEN]; 23 }; 24 25 /* default buffer size */ 26 #define MAX_ENTRIES 16384 27 28 /* 29 * Upper bits of the flags in the contention_data are used to identify 30 * some well-known locks which do not have symbols (non-global locks). 31 */ 32 #define LCD_F_MMAP_LOCK (1U << 31) 33 #define LCD_F_SIGHAND_LOCK (1U << 30) 34 35 #define LCB_F_MAX_FLAGS (1U << 7) 36 37 struct contention_data { 38 u64 total_time; 39 u64 min_time; 40 u64 max_time; 41 u32 count; 42 u32 flags; 43 }; 44 45 enum lock_aggr_mode { 46 LOCK_AGGR_ADDR = 0, 47 LOCK_AGGR_TASK, 48 LOCK_AGGR_CALLER, 49 LOCK_AGGR_CGROUP, 50 }; 51 52 enum lock_class_sym { 53 LOCK_CLASS_NONE, 54 LOCK_CLASS_RQLOCK, 55 }; 56 57 #endif /* UTIL_BPF_SKEL_LOCK_DATA_H */ 58