cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ksmbd_work.c (1696B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *   Copyright (C) 2019 Samsung Electronics Co., Ltd.
      4 */
      5
      6#include <linux/list.h>
      7#include <linux/mm.h>
      8#include <linux/slab.h>
      9#include <linux/workqueue.h>
     10
     11#include "server.h"
     12#include "connection.h"
     13#include "ksmbd_work.h"
     14#include "mgmt/ksmbd_ida.h"
     15
     16static struct kmem_cache *work_cache;
     17static struct workqueue_struct *ksmbd_wq;
     18
     19struct ksmbd_work *ksmbd_alloc_work_struct(void)
     20{
     21	struct ksmbd_work *work = kmem_cache_zalloc(work_cache, GFP_KERNEL);
     22
     23	if (work) {
     24		work->compound_fid = KSMBD_NO_FID;
     25		work->compound_pfid = KSMBD_NO_FID;
     26		INIT_LIST_HEAD(&work->request_entry);
     27		INIT_LIST_HEAD(&work->async_request_entry);
     28		INIT_LIST_HEAD(&work->fp_entry);
     29		INIT_LIST_HEAD(&work->interim_entry);
     30	}
     31	return work;
     32}
     33
     34void ksmbd_free_work_struct(struct ksmbd_work *work)
     35{
     36	WARN_ON(work->saved_cred != NULL);
     37
     38	kvfree(work->response_buf);
     39	kvfree(work->aux_payload_buf);
     40	kfree(work->tr_buf);
     41	kvfree(work->request_buf);
     42	if (work->async_id)
     43		ksmbd_release_id(&work->conn->async_ida, work->async_id);
     44	kmem_cache_free(work_cache, work);
     45}
     46
     47void ksmbd_work_pool_destroy(void)
     48{
     49	kmem_cache_destroy(work_cache);
     50}
     51
     52int ksmbd_work_pool_init(void)
     53{
     54	work_cache = kmem_cache_create("ksmbd_work_cache",
     55				       sizeof(struct ksmbd_work), 0,
     56				       SLAB_HWCACHE_ALIGN, NULL);
     57	if (!work_cache)
     58		return -ENOMEM;
     59	return 0;
     60}
     61
     62int ksmbd_workqueue_init(void)
     63{
     64	ksmbd_wq = alloc_workqueue("ksmbd-io", 0, 0);
     65	if (!ksmbd_wq)
     66		return -ENOMEM;
     67	return 0;
     68}
     69
     70void ksmbd_workqueue_destroy(void)
     71{
     72	destroy_workqueue(ksmbd_wq);
     73	ksmbd_wq = NULL;
     74}
     75
     76bool ksmbd_queue_work(struct ksmbd_work *work)
     77{
     78	return queue_work(ksmbd_wq, &work->work);
     79}