Release 4.16 drivers/staging/lustre/lnet/selftest/module.c

// SPDX-License-Identifier: GPL-2.0
/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.gnu.org/licenses/gpl-2.0.html
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright (c) 2012, Intel Corporation.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 */


#define DEBUG_SUBSYSTEM S_LNET

#include "selftest.h"
#include "console.h"


enum {
	
LST_INIT_NONE		= 0,
	
LST_INIT_WI_SERIAL,
	
LST_INIT_WI_TEST,
	
LST_INIT_RPC,
	
LST_INIT_FW,
	
LST_INIT_CONSOLE
};


static int lst_init_step = LST_INIT_NONE;


struct workqueue_struct *lst_serial_wq;

struct workqueue_struct **lst_test_wq;


static void

lnet_selftest_exit(void)
{
	int i;

	switch (lst_init_step) {
	case LST_INIT_CONSOLE:
		lstcon_console_fini();
		/* fall through */
	case LST_INIT_FW:
		sfw_shutdown();
		/* fall through */
	case LST_INIT_RPC:
		srpc_shutdown();
		/* fall through */
	case LST_INIT_WI_TEST:
		for (i = 0;
		     i < cfs_cpt_number(lnet_cpt_table()); i++) {
			if (!lst_test_wq[i])
				continue;
			destroy_workqueue(lst_test_wq[i]);
		}
		kvfree(lst_test_wq);
		lst_test_wq = NULL;
		/* fall through */
	case LST_INIT_WI_SERIAL:
		destroy_workqueue(lst_serial_wq);
		lst_serial_wq = NULL;
	case LST_INIT_NONE:
		break;
	default:
		LBUG();
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Peng Tao
91
85.05%
1
14.29%
Neil Brown
9
8.41%
2
28.57%
Gustavo A. R. Silva
4
3.74%
1
14.29%
Andreas Dilger
1
0.93%
1
14.29%
James Simmons
1
0.93%
1
14.29%
Anton Saraev
1
0.93%
1
14.29%
Total
107
100.00%
7
100.00%


static int

lnet_selftest_init(void)
{
	int nscheds;
	int rc = -ENOMEM;
	int i;

	lst_serial_wq = alloc_ordered_workqueue("lst_s", 0);
	if (!lst_serial_wq) {
		CERROR("Failed to create serial WI scheduler for LST\n");
		return -ENOMEM;
	}
	lst_init_step = LST_INIT_WI_SERIAL;

	nscheds = cfs_cpt_number(lnet_cpt_table());
	lst_test_wq = kvmalloc_array(nscheds, sizeof(lst_test_wq[0]),
					GFP_KERNEL | __GFP_ZERO);
	if (!lst_test_wq) {
		rc = -ENOMEM;
		goto error;
	}

	lst_init_step = LST_INIT_WI_TEST;
	for (i = 0; i < nscheds; i++) {
		int nthrs = cfs_cpt_weight(lnet_cpt_table(), i);
		struct workqueue_attrs attrs = {0};
		cpumask_var_t *mask = cfs_cpt_cpumask(lnet_cpt_table(), i);

		/* reserve at least one CPU for LND */
		nthrs = max(nthrs - 1, 1);
		lst_test_wq[i] = alloc_workqueue("lst_t", WQ_UNBOUND, nthrs);
		if (!lst_test_wq[i]) {
			CWARN("Failed to create CPU partition affinity WI scheduler %d for LST\n",
			      i);
			rc = -ENOMEM;
			goto error;
		}

		if (mask && alloc_cpumask_var(&attrs.cpumask, GFP_KERNEL)) {
			cpumask_copy(attrs.cpumask, *mask);
			apply_workqueue_attrs(lst_test_wq[i], &attrs);
			free_cpumask_var(attrs.cpumask);
		}
	}

	rc = srpc_startup();
	if (rc) {
		CERROR("LST can't startup rpc\n");
		goto error;
	}
	lst_init_step = LST_INIT_RPC;

	rc = sfw_startup();
	if (rc) {
		CERROR("LST can't startup framework\n");
		goto error;
	}
	lst_init_step = LST_INIT_FW;

	rc = lstcon_console_init();
	if (rc) {
		CERROR("LST can't startup console\n");
		goto error;
	}
	lst_init_step = LST_INIT_CONSOLE;
	return 0;
error:
	lnet_selftest_exit();
	return rc;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Peng Tao
203
64.24%
1
10.00%
Neil Brown
91
28.80%
3
30.00%
Arnd Bergmann
14
4.43%
1
10.00%
Greg Kroah-Hartman
3
0.95%
1
10.00%
Dmitry Eremin-Solenikov
2
0.63%
1
10.00%
Andreas Dilger
1
0.32%
1
10.00%
James Simmons
1
0.32%
1
10.00%
Anton Saraev
1
0.32%
1
10.00%
Total
316
100.00%
10
100.00%

MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("LNet Selftest");
MODULE_VERSION("2.7.0");
MODULE_LICENSE("GPL");

module_init(lnet_selftest_init);
module_exit(lnet_selftest_exit);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Peng Tao
345
68.86%
1
5.88%
Neil Brown
104
20.76%
3
17.65%
Arnd Bergmann
14
2.79%
1
5.88%
Greg Kroah-Hartman
12
2.40%
3
17.65%
Andreas Dilger
8
1.60%
2
11.76%
James Simmons
6
1.20%
2
11.76%
Gustavo A. R. Silva
4
0.80%
1
5.88%
Frank Zago
3
0.60%
1
5.88%
Anton Saraev
2
0.40%
1
5.88%
Dmitry Eremin-Solenikov
2
0.40%
1
5.88%
Oleg Drokin
1
0.20%
1
5.88%
Total
501
100.00%
17
100.00%
Directory: drivers/staging/lustre/lnet/selftest

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