8d59ecb214
- Move all files related to the LinuxKPI into sys/compat/linuxkpi and its subfolders. - Update sys/conf/files and some Makefiles to use new file locations. - Added description of COMPAT_LINUXKPI to sys/conf/NOTES which in turn adds the LinuxKPI to all LINT builds. - The LinuxKPI can be added to the kernel by setting the COMPAT_LINUXKPI option. The OFED kernel option no longer builds the LinuxKPI into the kernel. This was done to keep the build rules for the LinuxKPI in sys/conf/files simple. - Extend the LinuxKPI module to include support for USB by moving the Linux USB compat from usb.ko to linuxkpi.ko. - Bump the FreeBSD_version. - A universe kernel build has been done. Reviewed by: np @ (cxgb and cxgbe related changes only) Sponsored by: Mellanox Technologies
108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 2010 Isilon Systems, Inc.
|
|
* Copyright (c) 2010 iX Systems, Inc.
|
|
* Copyright (c) 2010 Panasas, Inc.
|
|
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice unmodified, this list of conditions, and the following
|
|
* disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _LINUX_KTHREAD_H_
|
|
#define _LINUX_KTHREAD_H_
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/kthread.h>
|
|
#include <sys/sleepqueue.h>
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/sched.h>
|
|
|
|
static inline void
|
|
_kthread_fn(void *arg)
|
|
{
|
|
struct task_struct *task;
|
|
|
|
task = arg;
|
|
task_struct_set(curthread, task);
|
|
if (task->should_stop == 0)
|
|
task->task_ret = task->task_fn(task->task_data);
|
|
PROC_LOCK(task->task_thread->td_proc);
|
|
task->should_stop = TASK_STOPPED;
|
|
wakeup(task);
|
|
PROC_UNLOCK(task->task_thread->td_proc);
|
|
kthread_exit();
|
|
}
|
|
|
|
static inline struct task_struct *
|
|
_kthread_create(int (*threadfn)(void *data), void *data)
|
|
{
|
|
struct task_struct *task;
|
|
|
|
task = kzalloc(sizeof(*task), GFP_KERNEL);
|
|
task->task_fn = threadfn;
|
|
task->task_data = data;
|
|
|
|
return (task);
|
|
}
|
|
|
|
struct task_struct *kthread_create(int (*threadfn)(void *data),
|
|
void *data,
|
|
const char namefmt[], ...)
|
|
__attribute__((format(printf, 3, 4)));
|
|
|
|
#define kthread_run(fn, data, fmt, ...) \
|
|
({ \
|
|
struct task_struct *_task; \
|
|
\
|
|
_task = _kthread_create((fn), (data)); \
|
|
if (kthread_add(_kthread_fn, _task, NULL, &_task->task_thread, \
|
|
0, 0, fmt, ## __VA_ARGS__)) { \
|
|
kfree(_task); \
|
|
_task = NULL; \
|
|
} else \
|
|
task_struct_set(_task->task_thread, _task); \
|
|
_task; \
|
|
})
|
|
|
|
#define kthread_should_stop() current->should_stop
|
|
|
|
static inline int
|
|
kthread_stop(struct task_struct *task)
|
|
{
|
|
|
|
PROC_LOCK(task->task_thread->td_proc);
|
|
task->should_stop = TASK_SHOULD_STOP;
|
|
wake_up_process(task);
|
|
while (task->should_stop != TASK_STOPPED)
|
|
msleep(task, &task->task_thread->td_proc->p_mtx, PWAIT,
|
|
"kstop", hz);
|
|
PROC_UNLOCK(task->task_thread->td_proc);
|
|
return task->task_ret;
|
|
}
|
|
|
|
#endif /* _LINUX_KTHREAD_H_ */
|