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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
#ifndef MY_ABC_HERE
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#define MY_ABC_HERE
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#endif
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* kernel/workqueue_internal.h
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*
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* Workqueue internal header file. Only to be included by workqueue and
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* core kernel subsystems.
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*/
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#ifndef _KERNEL_WORKQUEUE_INTERNAL_H
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#define _KERNEL_WORKQUEUE_INTERNAL_H
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#include <linux/workqueue.h>
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#include <linux/kthread.h>
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#include <linux/preempt.h>
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struct worker_pool;
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/*
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* The poor guys doing the actual heavy lifting. All on-duty workers are
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* either serving the manager role, on idle list or on busy hash. For
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* details on the locking annotation (L, I, X...), refer to workqueue.c.
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*
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* Only to be used in workqueue and async.
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*/
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struct worker {
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/* on idle list while idle, on busy hash table while busy */
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union {
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struct list_head entry; /* L: while idle */
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struct hlist_node hentry; /* L: while busy */
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};
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struct work_struct *current_work; /* L: work being processed */
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work_func_t current_func; /* L: current_work's fn */
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struct pool_workqueue *current_pwq; /* L: current_work's pwq */
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struct list_head scheduled; /* L: scheduled works */
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/* 64 bytes boundary on 64bit, 32 on 32bit */
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struct task_struct *task; /* I: worker task */
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struct worker_pool *pool; /* A: the associated pool */
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/* L: for rescuers */
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struct list_head node; /* A: anchored at pool->workers */
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/* A: runs through worker->node */
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unsigned long last_active; /* L: last active timestamp */
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unsigned int flags; /* X: flags */
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int id; /* I: worker id */
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int sleeping; /* None */
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/*
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* Opaque string set with work_set_desc(). Printed out with task
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* dump for debugging - WARN, BUG, panic or sysrq.
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*/
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char desc[WORKER_DESC_LEN];
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/* used only by rescuers to point to the target workqueue */
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struct workqueue_struct *rescue_wq; /* I: the workqueue to rescue */
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/* used by the scheduler to determine a worker's last known identity */
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work_func_t last_func;
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};
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/**
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* current_wq_worker - return struct worker if %current is a workqueue worker
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*/
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static inline struct worker *current_wq_worker(void)
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{
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if (in_task() && (current->flags & PF_WQ_WORKER))
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return kthread_data(current);
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return NULL;
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}
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/*
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* Scheduler hooks for concurrency managed workqueue. Only to be used from
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* sched/ and workqueue.c.
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*/
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void wq_worker_running(struct task_struct *task);
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void wq_worker_sleeping(struct task_struct *task);
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work_func_t wq_worker_last_func(struct task_struct *task);
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#ifdef MY_ABC_HERE
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/* For in-thread I/O accumulation. We don't need atomic ops */
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struct work_io_acct {
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unsigned long last_update_jiffies;
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/*
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* Please refer to task_io_accounting.h for the following
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* I/O statistics
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*/
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u64 read_bytes;
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u64 write_bytes;
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u64 cancelled_write_bytes;
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};
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struct work_acct {
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struct workqueue_struct *wq;
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work_func_t func;
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struct work_io_acct io_acct;
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};
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void worker_run_work(struct worker *worker, struct work_struct *work);
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void account_work_time(struct work_acct *acct, u64 us, gfp_t gfp);
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struct workqueue_struct* get_pwq_wq(struct pool_workqueue *pwq);
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#endif /* MY_ABC_HERE */
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#endif /* _KERNEL_WORKQUEUE_INTERNAL_H */
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