// SPDX-License-Identifier: GPL-2.0
/*
 * This file defines the trace event structures that go into the ring
 * buffer directly. They are created via macros so that changes for them
 * appear in the format file. Using macros will automate this process.
 *
 * The macro used to create a ftrace data structure is:
 *
 * FTRACE_ENTRY( name, struct_name, id, structure, print )
 *
 * @name: the name used the event name, as well as the name of
 *   the directory that holds the format file.
 *
 * @struct_name: the name of the structure that is created.
 *
 * @id: The event identifier that is used to detect what event
 *    this is from the ring buffer.
 *
 * @structure: the structure layout
 *
 *  - __field(  type,   item    )
 *        This is equivalent to declaring
 *              type    item;
 *        in the structure.
 *  - __array(  type,   item,   size    )
 *        This is equivalent to declaring
 *              type    item[size];
 *        in the structure.
 *
 *   * for structures within structures, the format of the internal
 *      structure is laid out. This allows the internal structure
 *      to be deciphered for the format file. Although these macros
 *      may become out of sync with the internal structure, they
 *      will create a compile error if it happens. Since the
 *      internal structures are just tracing helpers, this is not
 *      an issue.
 *
 *      When an internal structure is used, it should use:
 *
 *      __field_struct( type,   item    )
 *
 *      instead of __field. This will prevent it from being shown in
 *      the output file. The fields in the structure should use.
 *
 *      __field_desc(   type,   container,      item            )
 *      __array_desc(   type,   container,      item,   len     )
 *
 *      type, item and len are the same as __field and __array, but
 *      container is added. This is the name of the item in
 *      __field_struct that this is describing.
 *
 *
 * @print: the print format shown to users in the format file.
 */

/*
 * Function trace entry - function address and parent function address:
 */
FTRACE_ENTRY_REG(function, ftrace_entry,

        TRACE_FN,

        F_STRUCT(
                __field_fn(     unsigned long,  ip              )
                __field_fn(     unsigned long,  parent_ip       )
        ),

        F_printk(" %ps <-- %ps",
                 (void *)__entry->ip, (void *)__entry->parent_ip),

        perf_ftrace_event_register
);

/* Function call entry */
FTRACE_ENTRY_PACKED(funcgraph_entry, ftrace_graph_ent_entry,

        TRACE_GRAPH_ENT,

        F_STRUCT(
                __field_struct( struct ftrace_graph_ent,        graph_ent       )
                __field_packed( unsigned long,  graph_ent,      func            )
                __field_packed( int,            graph_ent,      depth           )
        ),

        F_printk("--> %ps (%d)", (void *)__entry->func, __entry->depth)
);

/* Function return entry */
FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry,

        TRACE_GRAPH_RET,

        F_STRUCT(
                __field_struct( struct ftrace_graph_ret,        ret     )
                __field_packed( unsigned long,  ret,            func    )
                __field_packed( int,            ret,            depth   )
                __field_packed( unsigned int,   ret,            overrun )
                __field_packed( unsigned long long, ret,        calltime)
                __field_packed( unsigned long long, ret,        rettime )
        ),

        F_printk("<-- %ps (%d) (start: %llx  end: %llx) over: %d",
                 (void *)__entry->func, __entry->depth,
                 __entry->calltime, __entry->rettime,
                 __entry->depth)
);

/*
 * Context switch trace entry - which task (and prio) we switched from/to:
 *
 * This is used for both wakeup and context switches. We only want
 * to create one structure, but we need two outputs for it.
 */
#define FTRACE_CTX_FIELDS                                       \
        __field(        unsigned int,   prev_pid        )       \
        __field(        unsigned int,   next_pid        )       \
        __field(        unsigned int,   next_cpu        )       \
        __field(        unsigned char,  prev_prio       )       \
        __field(        unsigned char,  prev_state      )       \
        __field(        unsigned char,  next_prio       )       \
        __field(        unsigned char,  next_state      )

FTRACE_ENTRY(context_switch, ctx_switch_entry,

        TRACE_CTX,

        F_STRUCT(
                FTRACE_CTX_FIELDS
        ),

        F_printk("%u:%u:%u  ==> %u:%u:%u [%03u]",
                 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
                 __entry->next_pid, __entry->next_prio, __entry->next_state,
                 __entry->next_cpu)
);

/*
 * FTRACE_ENTRY_DUP only creates the format file, it will not
 *  create another structure.
 */
FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,

        TRACE_WAKE,

        F_STRUCT(
                FTRACE_CTX_FIELDS
        ),

        F_printk("%u:%u:%u  ==+ %u:%u:%u [%03u]",
                 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
                 __entry->next_pid, __entry->next_prio, __entry->next_state,
                 __entry->next_cpu)
);

/*
 * Stack-trace entry:
 */

#define FTRACE_STACK_ENTRIES    8

FTRACE_ENTRY(kernel_stack, stack_entry,

        TRACE_STACK,

        F_STRUCT(
                __field(        int,            size    )
                __array(        unsigned long,  caller, FTRACE_STACK_ENTRIES    )
        ),

        F_printk("\t=> %ps\n\t=> %ps\n\t=> %ps\n"
                 "\t=> %ps\n\t=> %ps\n\t=> %ps\n"
                 "\t=> %ps\n\t=> %ps\n",
                 (void *)__entry->caller[0], (void *)__entry->caller[1],
                 (void *)__entry->caller[2], (void *)__entry->caller[3],
                 (void *)__entry->caller[4], (void *)__entry->caller[5],
                 (void *)__entry->caller[6], (void *)__entry->caller[7])
);

FTRACE_ENTRY(user_stack, userstack_entry,

        TRACE_USER_STACK,

        F_STRUCT(
                __field(        unsigned int,   tgid    )
                __array(        unsigned long,  caller, FTRACE_STACK_ENTRIES    )
        ),

        F_printk("\t=> %ps\n\t=> %ps\n\t=> %ps\n"
                 "\t=> %ps\n\t=> %ps\n\t=> %ps\n"
                 "\t=> %ps\n\t=> %ps\n",
                 (void *)__entry->caller[0], (void *)__entry->caller[1],
                 (void *)__entry->caller[2], (void *)__entry->caller[3],
                 (void *)__entry->caller[4], (void *)__entry->caller[5],
                 (void *)__entry->caller[6], (void *)__entry->caller[7])
);

/*
 * trace_printk entry:
 */
FTRACE_ENTRY(bprint, bprint_entry,

        TRACE_BPRINT,

        F_STRUCT(
                __field(        unsigned long,  ip      )
                __field(        const char *,   fmt     )
                __dynamic_array(        u32,    buf     )
        ),

        F_printk("%ps: %s",
                 (void *)__entry->ip, __entry->fmt)
);

FTRACE_ENTRY_REG(print, print_entry,

        TRACE_PRINT,

        F_STRUCT(
                __field(        unsigned long,  ip      )
                __dynamic_array(        char,   buf     )
        ),

        F_printk("%ps: %s",
                 (void *)__entry->ip, __entry->buf),

        ftrace_event_register
);

FTRACE_ENTRY(raw_data, raw_data_entry,

        TRACE_RAW_DATA,

        F_STRUCT(
                __field(        unsigned int,   id      )
                __dynamic_array(        char,   buf     )
        ),

        F_printk("id:%04x %08x",
                 __entry->id, (int)__entry->buf[0])
);

FTRACE_ENTRY(bputs, bputs_entry,

        TRACE_BPUTS,

        F_STRUCT(
                __field(        unsigned long,  ip      )
                __field(        const char *,   str     )
        ),

        F_printk("%ps: %s",
                 (void *)__entry->ip, __entry->str)
);

FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,

        TRACE_MMIO_RW,

        F_STRUCT(
                __field_struct( struct mmiotrace_rw,    rw      )
                __field_desc(   resource_size_t, rw,    phys    )
                __field_desc(   unsigned long,  rw,     value   )
                __field_desc(   unsigned long,  rw,     pc      )
                __field_desc(   int,            rw,     map_id  )
                __field_desc(   unsigned char,  rw,     opcode  )
                __field_desc(   unsigned char,  rw,     width   )
        ),

        F_printk("%lx %lx %lx %d %x %x",
                 (unsigned long)__entry->phys, __entry->value, __entry->pc,
                 __entry->map_id, __entry->opcode, __entry->width)
);

FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,

        TRACE_MMIO_MAP,

        F_STRUCT(
                __field_struct( struct mmiotrace_map,   map     )
                __field_desc(   resource_size_t, map,   phys    )
                __field_desc(   unsigned long,  map,    virt    )
                __field_desc(   unsigned long,  map,    len     )
                __field_desc(   int,            map,    map_id  )
                __field_desc(   unsigned char,  map,    opcode  )
        ),

        F_printk("%lx %lx %lx %d %x",
                 (unsigned long)__entry->phys, __entry->virt, __entry->len,
                 __entry->map_id, __entry->opcode)
);


#define TRACE_FUNC_SIZE 30
#define TRACE_FILE_SIZE 20

FTRACE_ENTRY(branch, trace_branch,

        TRACE_BRANCH,

        F_STRUCT(
                __field(        unsigned int,   line                            )
                __array(        char,           func,   TRACE_FUNC_SIZE+1       )
                __array(        char,           file,   TRACE_FILE_SIZE+1       )
                __field(        char,           correct                         )
                __field(        char,           constant                        )
        ),

        F_printk("%u:%s:%s (%u)%s",
                 __entry->line,
                 __entry->func, __entry->file, __entry->correct,
                 __entry->constant ? " CONSTANT" : "")
);


FTRACE_ENTRY(hwlat, hwlat_entry,

        TRACE_HWLAT,

        F_STRUCT(
                __field(        u64,                    duration        )
                __field(        u64,                    outer_duration  )
                __field(        u64,                    nmi_total_ts    )
                __field_struct( struct timespec64,      timestamp       )
                __field_desc(   s64,    timestamp,      tv_sec          )
                __field_desc(   long,   timestamp,      tv_nsec         )
                __field(        unsigned int,           nmi_count       )
                __field(        unsigned int,           seqnum          )
                __field(        unsigned int,           count           )
        ),

        F_printk("cnt:%u\tts:%010llu.%010lu\tinner:%llu\touter:%llu\tcount:%d\tnmi-ts:%llu\tnmi-count:%u\n",
                 __entry->seqnum,
                 __entry->tv_sec,
                 __entry->tv_nsec,
                 __entry->duration,
                 __entry->outer_duration,
                 __entry->count,
                 __entry->nmi_total_ts,
                 __entry->nmi_count)
);

#define FUNC_REPEATS_GET_DELTA_TS(entry)                                \
        (((u64)(entry)->top_delta_ts << 32) | (entry)->bottom_delta_ts) \

FTRACE_ENTRY(func_repeats, func_repeats_entry,

        TRACE_FUNC_REPEATS,

        F_STRUCT(
                __field(        unsigned long,  ip              )
                __field(        unsigned long,  parent_ip       )
                __field(        u16     ,       count           )
                __field(        u16     ,       top_delta_ts    )
                __field(        u32     ,       bottom_delta_ts )
        ),

        F_printk(" %ps <-%ps\t(repeats:%u  delta: -%llu)",
                 (void *)__entry->ip,
                 (void *)__entry->parent_ip,
                 __entry->count,
                 FUNC_REPEATS_GET_DELTA_TS(__entry))
);

FTRACE_ENTRY(osnoise, osnoise_entry,

        TRACE_OSNOISE,

        F_STRUCT(
                __field(        u64,                    noise           )
                __field(        u64,                    runtime         )
                __field(        u64,                    max_sample      )
                __field(        unsigned int,           hw_count        )
                __field(        unsigned int,           nmi_count       )
                __field(        unsigned int,           irq_count       )
                __field(        unsigned int,           softirq_count   )
                __field(        unsigned int,           thread_count    )
        ),

        F_printk("noise:%llu\tmax_sample:%llu\thw:%u\tnmi:%u\tirq:%u\tsoftirq:%u\tthread:%u\n",
                 __entry->noise,
                 __entry->max_sample,
                 __entry->hw_count,
                 __entry->nmi_count,
                 __entry->irq_count,
                 __entry->softirq_count,
                 __entry->thread_count)
);

FTRACE_ENTRY(timerlat, timerlat_entry,

        TRACE_TIMERLAT,

        F_STRUCT(
                __field(        unsigned int,           seqnum          )
                __field(        int,                    context         )
                __field(        u64,                    timer_latency   )
        ),

        F_printk("seq:%u\tcontext:%d\ttimer_latency:%llu\n",
                 __entry->seqnum,
                 __entry->context,
                 __entry->timer_latency)
);