Merge tag 'upstream-3.7-rc1-fastmap' of git://git.infradead.org/linux-ubi
[deliverable/linux.git] / drivers / staging / android / logger.h
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1/* include/linux/logger.h
2 *
3 * Copyright (C) 2007-2008 Google, Inc.
4 * Author: Robert Love <rlove@android.com>
5 *
6 * This software is licensed under the terms of the GNU General Public
7 * License version 2, as published by the Free Software Foundation, and
8 * may be copied, distributed, and modified under those terms.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 */
16
17#ifndef _LINUX_LOGGER_H
18#define _LINUX_LOGGER_H
19
20#include <linux/types.h>
21#include <linux/ioctl.h>
22
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23/**
24 * struct logger_entry - defines a single entry that is given to a logger
25 * @len: The length of the payload
26 * @__pad: Two bytes of padding that appear to be required
27 * @pid: The generating process' process ID
28 * @tid: The generating process' thread ID
29 * @sec: The number of seconds that have elapsed since the Epoch
30 * @nsec: The number of nanoseconds that have elapsed since @sec
31 * @msg: The message that is to be logged
32 */
355b0502 33struct logger_entry {
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34 __u16 len;
35 __u16 __pad;
36 __s32 pid;
37 __s32 tid;
38 __s32 sec;
39 __s32 nsec;
40 char msg[0];
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41};
42
43#define LOGGER_LOG_RADIO "log_radio" /* radio-related messages */
44#define LOGGER_LOG_EVENTS "log_events" /* system/hardware events */
3537cdaa 45#define LOGGER_LOG_SYSTEM "log_system" /* system/framework messages */
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46#define LOGGER_LOG_MAIN "log_main" /* everything else */
47
48#define LOGGER_ENTRY_MAX_LEN (4*1024)
49#define LOGGER_ENTRY_MAX_PAYLOAD \
50 (LOGGER_ENTRY_MAX_LEN - sizeof(struct logger_entry))
51
52#define __LOGGERIO 0xAE
53
54#define LOGGER_GET_LOG_BUF_SIZE _IO(__LOGGERIO, 1) /* size of log */
55#define LOGGER_GET_LOG_LEN _IO(__LOGGERIO, 2) /* used log len */
56#define LOGGER_GET_NEXT_ENTRY_LEN _IO(__LOGGERIO, 3) /* next entry len */
57#define LOGGER_FLUSH_LOG _IO(__LOGGERIO, 4) /* flush log */
58
59#endif /* _LINUX_LOGGER_H */
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