mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-09 01:59:41 +00:00
6f52b16c5b
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
146 lines
4.6 KiB
C
146 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _UAPIBLKTRACE_H
|
|
#define _UAPIBLKTRACE_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* Trace categories
|
|
*/
|
|
enum blktrace_cat {
|
|
BLK_TC_READ = 1 << 0, /* reads */
|
|
BLK_TC_WRITE = 1 << 1, /* writes */
|
|
BLK_TC_FLUSH = 1 << 2, /* flush */
|
|
BLK_TC_SYNC = 1 << 3, /* sync IO */
|
|
BLK_TC_SYNCIO = BLK_TC_SYNC,
|
|
BLK_TC_QUEUE = 1 << 4, /* queueing/merging */
|
|
BLK_TC_REQUEUE = 1 << 5, /* requeueing */
|
|
BLK_TC_ISSUE = 1 << 6, /* issue */
|
|
BLK_TC_COMPLETE = 1 << 7, /* completions */
|
|
BLK_TC_FS = 1 << 8, /* fs requests */
|
|
BLK_TC_PC = 1 << 9, /* pc requests */
|
|
BLK_TC_NOTIFY = 1 << 10, /* special message */
|
|
BLK_TC_AHEAD = 1 << 11, /* readahead */
|
|
BLK_TC_META = 1 << 12, /* metadata */
|
|
BLK_TC_DISCARD = 1 << 13, /* discard requests */
|
|
BLK_TC_DRV_DATA = 1 << 14, /* binary per-driver data */
|
|
BLK_TC_FUA = 1 << 15, /* fua requests */
|
|
|
|
BLK_TC_END = 1 << 15, /* we've run out of bits! */
|
|
};
|
|
|
|
#define BLK_TC_SHIFT (16)
|
|
#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
|
|
|
|
/*
|
|
* Basic trace actions
|
|
*/
|
|
enum blktrace_act {
|
|
__BLK_TA_QUEUE = 1, /* queued */
|
|
__BLK_TA_BACKMERGE, /* back merged to existing rq */
|
|
__BLK_TA_FRONTMERGE, /* front merge to existing rq */
|
|
__BLK_TA_GETRQ, /* allocated new request */
|
|
__BLK_TA_SLEEPRQ, /* sleeping on rq allocation */
|
|
__BLK_TA_REQUEUE, /* request requeued */
|
|
__BLK_TA_ISSUE, /* sent to driver */
|
|
__BLK_TA_COMPLETE, /* completed by driver */
|
|
__BLK_TA_PLUG, /* queue was plugged */
|
|
__BLK_TA_UNPLUG_IO, /* queue was unplugged by io */
|
|
__BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */
|
|
__BLK_TA_INSERT, /* insert request */
|
|
__BLK_TA_SPLIT, /* bio was split */
|
|
__BLK_TA_BOUNCE, /* bio was bounced */
|
|
__BLK_TA_REMAP, /* bio was remapped */
|
|
__BLK_TA_ABORT, /* request aborted */
|
|
__BLK_TA_DRV_DATA, /* driver-specific binary data */
|
|
__BLK_TA_CGROUP = 1 << 8, /* from a cgroup*/
|
|
};
|
|
|
|
/*
|
|
* Notify events.
|
|
*/
|
|
enum blktrace_notify {
|
|
__BLK_TN_PROCESS = 0, /* establish pid/name mapping */
|
|
__BLK_TN_TIMESTAMP, /* include system clock */
|
|
__BLK_TN_MESSAGE, /* Character string message */
|
|
__BLK_TN_CGROUP = __BLK_TA_CGROUP, /* from a cgroup */
|
|
};
|
|
|
|
|
|
/*
|
|
* Trace actions in full. Additionally, read or write is masked
|
|
*/
|
|
#define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
|
|
#define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
|
|
#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
|
|
#define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
|
|
#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
|
|
#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE))
|
|
#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA))
|
|
|
|
#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
|
|
#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
|
|
#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY))
|
|
|
|
#define BLK_IO_TRACE_MAGIC 0x65617400
|
|
#define BLK_IO_TRACE_VERSION 0x07
|
|
|
|
/*
|
|
* The trace itself
|
|
*/
|
|
struct blk_io_trace {
|
|
__u32 magic; /* MAGIC << 8 | version */
|
|
__u32 sequence; /* event number */
|
|
__u64 time; /* in microseconds */
|
|
__u64 sector; /* disk offset */
|
|
__u32 bytes; /* transfer length */
|
|
__u32 action; /* what happened */
|
|
__u32 pid; /* who did it */
|
|
__u32 device; /* device number */
|
|
__u32 cpu; /* on what cpu did it happen */
|
|
__u16 error; /* completion error */
|
|
__u16 pdu_len; /* length of data after this trace */
|
|
/* cgroup id will be stored here if exists */
|
|
};
|
|
|
|
/*
|
|
* The remap event
|
|
*/
|
|
struct blk_io_trace_remap {
|
|
__be32 device_from;
|
|
__be32 device_to;
|
|
__be64 sector_from;
|
|
};
|
|
|
|
enum {
|
|
Blktrace_setup = 1,
|
|
Blktrace_running,
|
|
Blktrace_stopped,
|
|
};
|
|
|
|
#define BLKTRACE_BDEV_SIZE 32
|
|
|
|
/*
|
|
* User setup structure passed with BLKTRACESTART
|
|
*/
|
|
struct blk_user_trace_setup {
|
|
char name[BLKTRACE_BDEV_SIZE]; /* output */
|
|
__u16 act_mask; /* input */
|
|
__u32 buf_size; /* input */
|
|
__u32 buf_nr; /* input */
|
|
__u64 start_lba;
|
|
__u64 end_lba;
|
|
__u32 pid;
|
|
};
|
|
|
|
#endif /* _UAPIBLKTRACE_H */
|