#ifndef __PERF_FTRACE_H__
#define __PERF_FTRACE_H__

#include <linux/list.h>

#include "target.h"

struct evlist;
struct hashamp;
struct stats;

struct perf_ftrace {
        struct evlist           *evlist;
        struct target           target;
        const char              *tracer;
        struct list_head        filters;
        struct list_head        notrace;
        struct list_head        graph_funcs;
        struct list_head        nograph_funcs;
        struct list_head        event_pair;
        struct hashmap          *profile_hash;
        unsigned long           percpu_buffer_size;
        bool                    inherit;
        bool                    use_nsec;
        unsigned int            bucket_range;
        unsigned int            min_latency;
        unsigned int            max_latency;
        unsigned int            bucket_num;
        bool                    hide_empty;
        int                     graph_depth;
        int                     func_stack_trace;
        int                     func_irq_info;
        int                     graph_args;
        int                     graph_retval;
        int                     graph_retval_hex;
        int                     graph_retaddr;
        int                     graph_nosleep_time;
        int                     graph_noirqs;
        int                     graph_verbose;
        int                     graph_thresh;
        int                     graph_tail;
};

struct filter_entry {
        struct list_head        list;
        char                    name[];
};

#define NUM_BUCKET  22  /* 20 + 2 (for outliers in both direction) */

#ifdef HAVE_BPF_SKEL

int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace);
int perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace);
int perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace);
int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace,
                                  int buckets[], struct stats *stats);
int perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace);

#else  /* !HAVE_BPF_SKEL */

static inline int
perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
        return -1;
}

static inline int
perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
        return -1;
}

static inline int
perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
        return -1;
}

static inline int
perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused,
                              int buckets[] __maybe_unused,
                              struct stats *stats __maybe_unused)
{
        return -1;
}

static inline int
perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace __maybe_unused)
{
        return -1;
}

#endif  /* HAVE_BPF_SKEL */

#endif  /* __PERF_FTRACE_H__ */