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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Data structures shared between BPF and tools. */
#ifndef UTIL_BPF_SKEL_LOCK_DATA_H
#define UTIL_BPF_SKEL_LOCK_DATA_H
struct owner_tracing_data {
u32 pid; // Who has the lock.
u32 count; // How many waiters for this lock.
u64 timestamp; // The time while the owner acquires lock and contention is going on.
s32 stack_id; // Identifier for `owner_stat`, which stores as value in `owner_stacks`
};
struct tstamp_data {
u64 timestamp;
u64 lock;
u32 flags;
s32 stack_id;
};
struct contention_key {
s32 stack_id;
u32 pid;
u64 lock_addr_or_cgroup;
};
#define TASK_COMM_LEN 16
struct contention_task_data {
char comm[TASK_COMM_LEN];
};
/* default buffer size */
#define MAX_ENTRIES 16384
/*
* Upper bits of the flags in the contention_data are used to identify
* some well-known locks which do not have symbols (non-global locks).
*/
#define LCD_F_MMAP_LOCK (1U << 31)
#define LCD_F_SIGHAND_LOCK (1U << 30)
#define LCB_F_SLAB_ID_SHIFT 16
#define LCB_F_SLAB_ID_START (1U << 16)
#define LCB_F_SLAB_ID_END (1U << 26)
#define LCB_F_SLAB_ID_MASK 0x03FF0000U
#define LCB_F_TYPE_MAX (1U << 7)
#define LCB_F_TYPE_MASK 0x0000007FU
#define SLAB_NAME_MAX 28
struct contention_data {
u64 total_time;
u64 min_time;
u64 max_time;
u32 count;
u32 flags;
};
enum lock_aggr_mode {
LOCK_AGGR_ADDR = 0,
LOCK_AGGR_TASK,
LOCK_AGGR_CALLER,
LOCK_AGGR_CGROUP,
};
enum lock_class_sym {
LOCK_CLASS_NONE,
LOCK_CLASS_RQLOCK,
};
struct slab_cache_data {
u32 id;
char name[SLAB_NAME_MAX];
};
#endif /* UTIL_BPF_SKEL_LOCK_DATA_H */
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