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hrtimers: Split out hrtimer_types.h

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We need to reduce the scope of what's included in sched.h: task_struct
includes a hrtimer, so split out the core types into their own header.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Kent Overstreet 2023-12-11 11:52:02 -05:00
parent 2e346b19aa
commit 50d91c7658
3 changed files with 53 additions and 43 deletions
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44
include/linux/hrtimer.h
View file

@ -13,13 +13,13 @@
#define _LINUX_HRTIMER_H
#include <linux/hrtimer_defs.h>
#include <linux/rbtree.h>
#include <linux/hrtimer_types.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/percpu-defs.h>
#include <linux/rbtree.h>
#include <linux/seqlock.h>
#include <linux/timer.h>
#include <linux/timerqueue.h>
struct hrtimer_clock_base;
struct hrtimer_cpu_base;
@ -59,14 +59,6 @@ enum hrtimer_mode {
HRTIMER_MODE_REL_PINNED_HARD = HRTIMER_MODE_REL_PINNED | HRTIMER_MODE_HARD,
};
/*
* Return values for the callback function
*/
enum hrtimer_restart {
HRTIMER_NORESTART, /* Timer is not restarted */
HRTIMER_RESTART, /* Timer must be restarted */
};
/*
* Values to track state of the timer
*
@ -94,38 +86,6 @@ enum hrtimer_restart {
#define HRTIMER_STATE_INACTIVE 0x00
#define HRTIMER_STATE_ENQUEUED 0x01
/**
* struct hrtimer - the basic hrtimer structure
* @node: timerqueue node, which also manages node.expires,
* the absolute expiry time in the hrtimers internal
* representation. The time is related to the clock on
* which the timer is based. Is setup by adding
* slack to the _softexpires value. For non range timers
* identical to _softexpires.
* @_softexpires: the absolute earliest expiry time of the hrtimer.
* The time which was given as expiry time when the timer
* was armed.
* @function: timer expiry callback function
* @base: pointer to the timer base (per cpu and per clock)
* @state: state information (See bit values above)
* @is_rel: Set if the timer was armed relative
* @is_soft: Set if hrtimer will be expired in soft interrupt context.
* @is_hard: Set if hrtimer will be expired in hard interrupt context
* even on RT.
*
* The hrtimer structure must be initialized by hrtimer_init()
*/
struct hrtimer {
struct timerqueue_node node;
ktime_t _softexpires;
enum hrtimer_restart (*function)(struct hrtimer *);
struct hrtimer_clock_base *base;
u8 state;
u8 is_rel;
u8 is_soft;
u8 is_hard;
};
/**
* struct hrtimer_sleeper - simple sleeper structure
* @timer: embedded timer structure

50
include/linux/hrtimer_types.h Normal file
View file

@ -0,0 +1,50 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_HRTIMER_TYPES_H
#define _LINUX_HRTIMER_TYPES_H
#include <linux/types.h>
#include <linux/timerqueue.h>
struct hrtimer_clock_base;
/*
* Return values for the callback function
*/
enum hrtimer_restart {
HRTIMER_NORESTART, /* Timer is not restarted */
HRTIMER_RESTART, /* Timer must be restarted */
};
/**
* struct hrtimer - the basic hrtimer structure
* @node: timerqueue node, which also manages node.expires,
* the absolute expiry time in the hrtimers internal
* representation. The time is related to the clock on
* which the timer is based. Is setup by adding
* slack to the _softexpires value. For non range timers
* identical to _softexpires.
* @_softexpires: the absolute earliest expiry time of the hrtimer.
* The time which was given as expiry time when the timer
* was armed.
* @function: timer expiry callback function
* @base: pointer to the timer base (per cpu and per clock)
* @state: state information (See bit values above)
* @is_rel: Set if the timer was armed relative
* @is_soft: Set if hrtimer will be expired in soft interrupt context.
* @is_hard: Set if hrtimer will be expired in hard interrupt context
* even on RT.
*
* The hrtimer structure must be initialized by hrtimer_init()
*/
struct hrtimer {
struct timerqueue_node node;
ktime_t _softexpires;
enum hrtimer_restart (*function)(struct hrtimer *);
struct hrtimer_clock_base *base;
u8 state;
u8 is_rel;
u8 is_soft;
u8 is_hard;
};
#endif /* _LINUX_HRTIMER_TYPES_H */

2
include/linux/sched.h
View file

@ -17,7 +17,7 @@
#include <linux/kmsan_types.h>
#include <linux/mutex.h>
#include <linux/plist.h>
#include <linux/hrtimer.h>
#include <linux/hrtimer_types.h>
#include <linux/irqflags.h>
#include <linux/seccomp.h>
#include <linux/nodemask_types.h>