tools/perf/util/bpf_skel/lock_data.h

   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         s32 stack_id;
  11 };
  12
  13 struct contention_key {
  14         s32 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 */