The C and C++ Include Header Files

/usr/include/linux/stm.h


$ cat -n /usr/include/linux/stm.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	/*
     3	 * System Trace Module (STM) userspace interfaces
     4	 * Copyright (c) 2014, Intel Corporation.
     5	 *
     6	 * STM class implements generic infrastructure for  System Trace Module devices
     7	 * as defined in MIPI STPv2 specification.
     8	 */
     9	
    10	#ifndef _LINUX_STM_H
    11	#define _LINUX_STM_H
    12	
    13	#include <linux/types.h>
    14	
    15	/* Maximum allowed master and channel values */
    16	#define STP_MASTER_MAX	0xffff
    17	#define STP_CHANNEL_MAX	0xffff
    18	
    19	/**
    20	 * struct stp_policy_id - identification for the STP policy
    21	 * @size:	size of the structure including real id[] length
    22	 * @master:	assigned master
    23	 * @channel:	first assigned channel
    24	 * @width:	number of requested channels
    25	 * @id:		identification string
    26	 *
    27	 * User must calculate the total size of the structure and put it into
    28	 * @size field, fill out the @id and desired @width. In return, kernel
    29	 * fills out @master, @channel and @width.
    30	 */
    31	struct stp_policy_id {
    32		__u32		size;
    33		__u16		master;
    34		__u16		channel;
    35		__u16		width;
    36		/* padding */
    37		__u16		__reserved_0;
    38		__u32		__reserved_1;
    39		char		id[];
    40	};
    41	
    42	#define STP_POLICY_ID_SET	_IOWR('%', 0, struct stp_policy_id)
    43	#define STP_POLICY_ID_GET	_IOR('%', 1, struct stp_policy_id)
    44	#define STP_SET_OPTIONS		_IOW('%', 2, __u64)
    45	
    46	#endif /* _LINUX_STM_H */