mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-04 09:59:32 +00:00
ioprio: move user space relevant ioprio bits to UAPI includes
systemd added a modified copy of include/linux/ioprio.h into its code to get the relevant content definitions for the exposed ioprio_[get|set] system calls. Move the user space relevant ioprio bits to the UAPI includes to be able to use the ioprio_[get|set] syscalls as intended. Cc: Kay Sievers <kay@vrfy.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Link: https://lore.kernel.org/r/20210714195655.181943-1-socketcan@hartkopp.net Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
c500bee1c5
commit
06447ae5e3
2 changed files with 47 additions and 40 deletions
|
@ -6,46 +6,7 @@
|
|||
#include <linux/sched/rt.h>
|
||||
#include <linux/iocontext.h>
|
||||
|
||||
/*
|
||||
* Gives us 8 prio classes with 13-bits of data for each class
|
||||
*/
|
||||
#define IOPRIO_CLASS_SHIFT (13)
|
||||
#define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1)
|
||||
|
||||
#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
|
||||
#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
|
||||
#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data)
|
||||
|
||||
#define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE)
|
||||
|
||||
/*
|
||||
* These are the io priority groups as implemented by CFQ. RT is the realtime
|
||||
* class, it always gets premium service. BE is the best-effort scheduling
|
||||
* class, the default for any process. IDLE is the idle scheduling class, it
|
||||
* is only served when no one else is using the disk.
|
||||
*/
|
||||
enum {
|
||||
IOPRIO_CLASS_NONE,
|
||||
IOPRIO_CLASS_RT,
|
||||
IOPRIO_CLASS_BE,
|
||||
IOPRIO_CLASS_IDLE,
|
||||
};
|
||||
|
||||
/*
|
||||
* 8 best effort priority levels are supported
|
||||
*/
|
||||
#define IOPRIO_BE_NR (8)
|
||||
|
||||
enum {
|
||||
IOPRIO_WHO_PROCESS = 1,
|
||||
IOPRIO_WHO_PGRP,
|
||||
IOPRIO_WHO_USER,
|
||||
};
|
||||
|
||||
/*
|
||||
* Fallback BE priority
|
||||
*/
|
||||
#define IOPRIO_NORM (4)
|
||||
#include <uapi/linux/ioprio.h>
|
||||
|
||||
/*
|
||||
* if process has set io priority explicitly, use that. if not, convert
|
||||
|
|
46
include/uapi/linux/ioprio.h
Normal file
46
include/uapi/linux/ioprio.h
Normal file
|
@ -0,0 +1,46 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||||
#ifndef _UAPI_LINUX_IOPRIO_H
|
||||
#define _UAPI_LINUX_IOPRIO_H
|
||||
|
||||
/*
|
||||
* Gives us 8 prio classes with 13-bits of data for each class
|
||||
*/
|
||||
#define IOPRIO_CLASS_SHIFT (13)
|
||||
#define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1)
|
||||
|
||||
#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
|
||||
#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
|
||||
#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data)
|
||||
|
||||
/*
|
||||
* These are the io priority groups as implemented by CFQ. RT is the realtime
|
||||
* class, it always gets premium service. BE is the best-effort scheduling
|
||||
* class, the default for any process. IDLE is the idle scheduling class, it
|
||||
* is only served when no one else is using the disk.
|
||||
*/
|
||||
enum {
|
||||
IOPRIO_CLASS_NONE,
|
||||
IOPRIO_CLASS_RT,
|
||||
IOPRIO_CLASS_BE,
|
||||
IOPRIO_CLASS_IDLE,
|
||||
};
|
||||
|
||||
#define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE)
|
||||
|
||||
/*
|
||||
* 8 best effort priority levels are supported
|
||||
*/
|
||||
#define IOPRIO_BE_NR (8)
|
||||
|
||||
enum {
|
||||
IOPRIO_WHO_PROCESS = 1,
|
||||
IOPRIO_WHO_PGRP,
|
||||
IOPRIO_WHO_USER,
|
||||
};
|
||||
|
||||
/*
|
||||
* Fallback BE priority
|
||||
*/
|
||||
#define IOPRIO_NORM (4)
|
||||
|
||||
#endif /* _UAPI_LINUX_IOPRIO_H */
|
Loading…
Reference in a new issue