cregit-Linux how code gets into the kernel

Release 4.7 drivers/android/binder_trace.h

Directory: drivers/android
/*
 * Copyright (C) 2012 Google, Inc.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */


#undef TRACE_SYSTEM

#define TRACE_SYSTEM binder

#if !defined(_BINDER_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)

#define _BINDER_TRACE_H

#include <linux/tracepoint.h>

struct binder_buffer;
struct binder_node;
struct binder_proc;
struct binder_ref;
struct binder_thread;
struct binder_transaction;

TRACE_EVENT(binder_ioctl,
	TP_PROTO(unsigned int cmd, unsigned long arg),
	TP_ARGS(cmd, arg),

	TP_STRUCT__entry(
                __field(unsigned int, cmd)
                __field(unsigned long, arg)
        ),
	TP_fast_assign(
                __entry->cmd = cmd;
                __entry->arg = arg;
        ),
	TP_printk("cmd=0x%x arg=0x%lx", __entry->cmd, __entry->arg)
);

DECLARE_EVENT_CLASS(binder_lock_class,
	TP_PROTO(const char *tag),
	TP_ARGS(tag),
	TP_STRUCT__entry(
                __field(const char *, tag)
        ),
	TP_fast_assign(
                __entry->tag = tag;
        ),
	TP_printk("tag=%s", __entry->tag)
);


#define DEFINE_BINDER_LOCK_EVENT(name)	\
DEFINE_EVENT(binder_lock_class, name,   \
        TP_PROTO(const char *func), \
        TP_ARGS(func))


DEFINE_BINDER_LOCK_EVENT(binder_lock);

DEFINE_BINDER_LOCK_EVENT(binder_locked);

DEFINE_BINDER_LOCK_EVENT(binder_unlock);

DECLARE_EVENT_CLASS(binder_function_return_class,
	TP_PROTO(int ret),
	TP_ARGS(ret),
	TP_STRUCT__entry(
                __field(int, ret)
        ),
	TP_fast_assign(
                __entry->ret = ret;
        ),
	TP_printk("ret=%d", __entry->ret)
);


#define DEFINE_BINDER_FUNCTION_RETURN_EVENT(name)	\
DEFINE_EVENT(binder_function_return_class, name,        \
        TP_PROTO(int ret), \
        TP_ARGS(ret))


DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_ioctl_done);

DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_write_done);

DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_read_done);

TRACE_EVENT(binder_wait_for_work,
	TP_PROTO(bool proc_work, bool transaction_stack, bool thread_todo),
	TP_ARGS(proc_work, transaction_stack, thread_todo),

	TP_STRUCT__entry(
                __field(bool, proc_work)
                __field(bool, transaction_stack)
                __field(bool, thread_todo)
        ),
	TP_fast_assign(
                __entry->proc_work = proc_work;
                __entry->transaction_stack = transaction_stack;
                __entry->thread_todo = thread_todo;
        ),
	TP_printk("proc_work=%d transaction_stack=%d thread_todo=%d",
                  __entry->proc_work, __entry->transaction_stack,
                  __entry->thread_todo)
);

TRACE_EVENT(binder_transaction,
	TP_PROTO(bool reply, struct binder_transaction *t,
                 struct binder_node *target_node),
	TP_ARGS(reply, t, target_node),
	TP_STRUCT__entry(
                __field(int, debug_id)
                __field(int, target_node)
                __field(int, to_proc)
                __field(int, to_thread)
                __field(int, reply)
                __field(unsigned int, code)
                __field(unsigned int, flags)
        ),
	TP_fast_assign(
                __entry->debug_id = t->debug_id;
                __entry->target_node = target_node ? target_node->debug_id : 0;
                __entry->to_proc = t->to_proc->pid;
                __entry->to_thread = t->to_thread ? t->to_thread->pid : 0;
                __entry->reply = reply;
                __entry->code = t->code;
                __entry->flags = t->flags;
        ),
	TP_printk("transaction=%d dest_node=%d dest_proc=%d dest_thread=%d reply=%d flags=0x%x code=0x%x",
                  __entry->debug_id, __entry->target_node,
                  __entry->to_proc, __entry->to_thread,
                  __entry->reply, __entry->flags, __entry->code)
);

TRACE_EVENT(binder_transaction_received,
	TP_PROTO(struct binder_transaction *t),
	TP_ARGS(t),

	TP_STRUCT__entry(
                __field(int, debug_id)
        ),
	TP_fast_assign(
                __entry->debug_id = t->debug_id;
        ),
	TP_printk("transaction=%d", __entry->debug_id)
);

TRACE_EVENT(binder_transaction_node_to_ref,
	TP_PROTO(struct binder_transaction *t, struct binder_node *node,
                 struct binder_ref *ref),
	TP_ARGS(t, node, ref),

	TP_STRUCT__entry(
                __field(int, debug_id)
                __field(int, node_debug_id)
                __field(binder_uintptr_t, node_ptr)
                __field(int, ref_debug_id)
                __field(uint32_t, ref_desc)
        ),
	TP_fast_assign(
                __entry->debug_id = t->debug_id;
                __entry->node_debug_id = node->debug_id;
                __entry->node_ptr = node->ptr;
                __entry->ref_debug_id = ref->debug_id;
                __entry->ref_desc = ref->desc;
        ),
	TP_printk("transaction=%d node=%d src_ptr=0x%016llx ==> dest_ref=%d dest_desc=%d",
                  __entry->debug_id, __entry->node_debug_id,
                  (u64)__entry->node_ptr,
                  __entry->ref_debug_id, __entry->ref_desc)
);

TRACE_EVENT(binder_transaction_ref_to_node,
	TP_PROTO(struct binder_transaction *t, struct binder_ref *ref),
	TP_ARGS(t, ref),

	TP_STRUCT__entry(
                __field(int, debug_id)
                __field(int, ref_debug_id)
                __field(uint32_t, ref_desc)
                __field(int, node_debug_id)
                __field(binder_uintptr_t, node_ptr)
        ),
	TP_fast_assign(
                __entry->debug_id = t->debug_id;
                __entry->ref_debug_id = ref->debug_id;
                __entry->ref_desc = ref->desc;
                __entry->node_debug_id = ref->node->debug_id;
                __entry->node_ptr = ref->node->ptr;
        ),
	TP_printk("transaction=%d node=%d src_ref=%d src_desc=%d ==> dest_ptr=0x%016llx",
                  __entry->debug_id, __entry->node_debug_id,
                  __entry->ref_debug_id, __entry->ref_desc,
                  (u64)__entry->node_ptr)
);

TRACE_EVENT(binder_transaction_ref_to_ref,
	TP_PROTO(struct binder_transaction *t, struct binder_ref *src_ref,
                 struct binder_ref *dest_ref),
	TP_ARGS(t, src_ref, dest_ref),

	TP_STRUCT__entry(
                __field(int, debug_id)
                __field(int, node_debug_id)
                __field(int, src_ref_debug_id)
                __field(uint32_t, src_ref_desc)
                __field(int, dest_ref_debug_id)
                __field(uint32_t, dest_ref_desc)
        ),
	TP_fast_assign(
                __entry->debug_id = t->debug_id;
                __entry->node_debug_id = src_ref->node->debug_id;
                __entry->src_ref_debug_id = src_ref->debug_id;
                __entry->src_ref_desc = src_ref->desc;
                __entry->dest_ref_debug_id = dest_ref->debug_id;
                __entry->dest_ref_desc = dest_ref->desc;
        ),
	TP_printk("transaction=%d node=%d src_ref=%d src_desc=%d ==> dest_ref=%d dest_desc=%d",
                  __entry->debug_id, __entry->node_debug_id,
                  __entry->src_ref_debug_id, __entry->src_ref_desc,
                  __entry->dest_ref_debug_id, __entry->dest_ref_desc)
);

TRACE_EVENT(binder_transaction_fd,
	TP_PROTO(struct binder_transaction *t, int src_fd, int dest_fd),
	TP_ARGS(t, src_fd, dest_fd),

	TP_STRUCT__entry(
                __field(int, debug_id)
                __field(int, src_fd)
                __field(int, dest_fd)
        ),
	TP_fast_assign(
                __entry->debug_id = t->debug_id;
                __entry->src_fd = src_fd;
                __entry->dest_fd = dest_fd;
        ),
	TP_printk("transaction=%d src_fd=%d ==> dest_fd=%d",
                  __entry->debug_id, __entry->src_fd, __entry->dest_fd)
);

DECLARE_EVENT_CLASS(binder_buffer_class,
	TP_PROTO(struct binder_buffer *buf),
	TP_ARGS(buf),
	TP_STRUCT__entry(
                __field(int, debug_id)
                __field(size_t, data_size)
                __field(size_t, offsets_size)
        ),
	TP_fast_assign(
                __entry->debug_id = buf->debug_id;
                __entry->data_size = buf->data_size;
                __entry->offsets_size = buf->offsets_size;
        ),
	TP_printk("transaction=%d data_size=%zd offsets_size=%zd",
                  __entry->debug_id, __entry->data_size, __entry->offsets_size)
);

DEFINE_EVENT(binder_buffer_class, binder_transaction_alloc_buf,
	TP_PROTO(struct binder_buffer *buffer),
	TP_ARGS(buffer));

DEFINE_EVENT(binder_buffer_class, binder_transaction_buffer_release,
	TP_PROTO(struct binder_buffer *buffer),
	TP_ARGS(buffer));

DEFINE_EVENT(binder_buffer_class, binder_transaction_failed_buffer_release,
	TP_PROTO(struct binder_buffer *buffer),
	TP_ARGS(buffer));

TRACE_EVENT(binder_update_page_range,
	TP_PROTO(struct binder_proc *proc, bool allocate,
                 void *start, void *end),
	TP_ARGS(proc, allocate, start, end),
	TP_STRUCT__entry(
                __field(int, proc)
                __field(bool, allocate)
                __field(size_t, offset)
                __field(size_t, size)
        ),
	TP_fast_assign(
                __entry->proc = proc->pid;
                __entry->allocate = allocate;
                __entry->offset = start - proc->buffer;
                __entry->size = end - start;
        ),
	TP_printk("proc=%d allocate=%d offset=%zu size=%zu",
                  __entry->proc, __entry->allocate,
                  __entry->offset, __entry->size)
);

TRACE_EVENT(binder_command,
	TP_PROTO(uint32_t cmd),
	TP_ARGS(cmd),
	TP_STRUCT__entry(
                __field(uint32_t, cmd)
        ),
	TP_fast_assign(
                __entry->cmd = cmd;
        ),
	TP_printk("cmd=0x%x %s",
                  __entry->cmd,
                  _IOC_NR(__entry->cmd) < ARRAY_SIZE(binder_command_strings) ?
                          binder_command_strings[_IOC_NR(__entry->cmd)] :
			  "unknown")
);

TRACE_EVENT(binder_return,
	TP_PROTO(uint32_t cmd),
	TP_ARGS(cmd),
	TP_STRUCT__entry(
                __field(uint32_t, cmd)
        ),
	TP_fast_assign(
                __entry->cmd = cmd;
        ),
	TP_printk("cmd=0x%x %s",
                  __entry->cmd,
                  _IOC_NR(__entry->cmd) < ARRAY_SIZE(binder_return_strings) ?
                          binder_return_strings[_IOC_NR(__entry->cmd)] :
			  "unknown")
);

#endif /* _BINDER_TRACE_H */


#undef TRACE_INCLUDE_PATH

#undef TRACE_INCLUDE_FILE

#define TRACE_INCLUDE_PATH .

#define TRACE_INCLUDE_FILE binder_trace
#include <trace/define_trace.h>

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Directory: drivers/android
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