/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2007 Cluster File Systems, Inc.
- * Author: Eric Mei <ericm@clusterfs.com>
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * 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.
*
- * Lustre 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 for more details.
+ * 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
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/ptlrpc/sec_gc.c
+ *
+ * Author: Eric Mei <ericm@clusterfs.com>
*/
#ifndef EXPORT_SYMTAB
#ifdef __KERNEL__
-static DECLARE_MUTEX(sec_gc_mutex);
+static cfs_mutex_t sec_gc_mutex;
static CFS_LIST_HEAD(sec_gc_list);
-static spinlock_t sec_gc_list_lock = SPIN_LOCK_UNLOCKED;
+static cfs_spinlock_t sec_gc_list_lock;
static CFS_LIST_HEAD(sec_gc_ctx_list);
-static spinlock_t sec_gc_ctx_list_lock = SPIN_LOCK_UNLOCKED;
+static cfs_spinlock_t sec_gc_ctx_list_lock;
static struct ptlrpc_thread sec_gc_thread;
-static atomic_t sec_gc_wait_del = ATOMIC_INIT(0);
+static cfs_atomic_t sec_gc_wait_del = CFS_ATOMIC_INIT(0);
void sptlrpc_gc_add_sec(struct ptlrpc_sec *sec)
{
LASSERT(sec->ps_policy->sp_cops->gc_ctx);
LASSERT(sec->ps_gc_interval > 0);
- LASSERT(list_empty(&sec->ps_gc_list));
+ LASSERT(cfs_list_empty(&sec->ps_gc_list));
sec->ps_gc_next = cfs_time_current_sec() + sec->ps_gc_interval;
- spin_lock(&sec_gc_list_lock);
- list_add_tail(&sec_gc_list, &sec->ps_gc_list);
- spin_unlock(&sec_gc_list_lock);
+ cfs_spin_lock(&sec_gc_list_lock);
+ cfs_list_add_tail(&sec_gc_list, &sec->ps_gc_list);
+ cfs_spin_unlock(&sec_gc_list_lock);
CDEBUG(D_SEC, "added sec %p(%s)\n", sec, sec->ps_policy->sp_name);
}
void sptlrpc_gc_del_sec(struct ptlrpc_sec *sec)
{
- if (list_empty(&sec->ps_gc_list))
+ if (cfs_list_empty(&sec->ps_gc_list))
return;
- might_sleep();
+ cfs_might_sleep();
/* signal before list_del to make iteration in gc thread safe */
- atomic_inc(&sec_gc_wait_del);
+ cfs_atomic_inc(&sec_gc_wait_del);
- spin_lock(&sec_gc_list_lock);
- list_del_init(&sec->ps_gc_list);
- spin_unlock(&sec_gc_list_lock);
+ cfs_spin_lock(&sec_gc_list_lock);
+ cfs_list_del_init(&sec->ps_gc_list);
+ cfs_spin_unlock(&sec_gc_list_lock);
/* barrier */
- mutex_down(&sec_gc_mutex);
- mutex_up(&sec_gc_mutex);
+ cfs_mutex_lock(&sec_gc_mutex);
+ cfs_mutex_unlock(&sec_gc_mutex);
- atomic_dec(&sec_gc_wait_del);
+ cfs_atomic_dec(&sec_gc_wait_del);
CDEBUG(D_SEC, "del sec %p(%s)\n", sec, sec->ps_policy->sp_name);
}
void sptlrpc_gc_add_ctx(struct ptlrpc_cli_ctx *ctx)
{
- LASSERT(list_empty(&ctx->cc_gc_chain));
+ LASSERT(cfs_list_empty(&ctx->cc_gc_chain));
CDEBUG(D_SEC, "hand over ctx %p(%u->%s)\n",
ctx, ctx->cc_vcred.vc_uid, sec2target_str(ctx->cc_sec));
- spin_lock(&sec_gc_ctx_list_lock);
- list_add(&ctx->cc_gc_chain, &sec_gc_ctx_list);
- spin_unlock(&sec_gc_ctx_list_lock);
+ cfs_spin_lock(&sec_gc_ctx_list_lock);
+ cfs_list_add(&ctx->cc_gc_chain, &sec_gc_ctx_list);
+ cfs_spin_unlock(&sec_gc_ctx_list_lock);
- sec_gc_thread.t_flags |= SVC_SIGNAL;
+ thread_add_flags(&sec_gc_thread, SVC_SIGNAL);
cfs_waitq_signal(&sec_gc_thread.t_ctl_waitq);
}
EXPORT_SYMBOL(sptlrpc_gc_add_ctx);
{
struct ptlrpc_cli_ctx *ctx;
- spin_lock(&sec_gc_ctx_list_lock);
+ cfs_spin_lock(&sec_gc_ctx_list_lock);
- while (!list_empty(&sec_gc_ctx_list)) {
- ctx = list_entry(sec_gc_ctx_list.next,
- struct ptlrpc_cli_ctx, cc_gc_chain);
- list_del_init(&ctx->cc_gc_chain);
- spin_unlock(&sec_gc_ctx_list_lock);
+ while (!cfs_list_empty(&sec_gc_ctx_list)) {
+ ctx = cfs_list_entry(sec_gc_ctx_list.next,
+ struct ptlrpc_cli_ctx, cc_gc_chain);
+ cfs_list_del_init(&ctx->cc_gc_chain);
+ cfs_spin_unlock(&sec_gc_ctx_list_lock);
LASSERT(ctx->cc_sec);
- LASSERT(atomic_read(&ctx->cc_refcount) == 1);
+ LASSERT(cfs_atomic_read(&ctx->cc_refcount) == 1);
CDEBUG(D_SEC, "gc pick up ctx %p(%u->%s)\n",
ctx, ctx->cc_vcred.vc_uid, sec2target_str(ctx->cc_sec));
sptlrpc_cli_ctx_put(ctx, 1);
- spin_lock(&sec_gc_ctx_list_lock);
+ cfs_spin_lock(&sec_gc_ctx_list_lock);
}
- spin_unlock(&sec_gc_ctx_list_lock);
+ cfs_spin_unlock(&sec_gc_ctx_list_lock);
}
static void sec_do_gc(struct ptlrpc_sec *sec)
LASSERT(sec->ps_policy->sp_cops->gc_ctx);
if (unlikely(sec->ps_gc_next == 0)) {
- CWARN("sec %p(%s) has 0 gc time\n",
+ CDEBUG(D_SEC, "sec %p(%s) has 0 gc time\n",
sec, sec->ps_policy->sp_name);
return;
}
struct ptlrpc_thread *thread = (struct ptlrpc_thread *) arg;
struct l_wait_info lwi;
- cfs_daemonize("sptlrpc_gc");
+ cfs_daemonize_ctxt("sptlrpc_gc");
/* Record that the thread is running */
- thread->t_flags = SVC_RUNNING;
+ thread_set_flags(thread, SVC_RUNNING);
cfs_waitq_signal(&thread->t_ctl_waitq);
while (1) {
struct ptlrpc_sec *sec;
- thread->t_flags &= ~SVC_SIGNAL;
+ thread_clear_flags(thread, SVC_SIGNAL);
sec_process_ctx_list();
again:
/* go through sec list do gc.
* to trace each sec as order of expiry time.
* another issue here is we wakeup as fixed interval instead of
* according to each sec's expiry time */
- mutex_down(&sec_gc_mutex);
- list_for_each_entry(sec, &sec_gc_list, ps_gc_list) {
+ cfs_mutex_lock(&sec_gc_mutex);
+ cfs_list_for_each_entry(sec, &sec_gc_list, ps_gc_list) {
/* if someone is waiting to be deleted, let it
* proceed as soon as possible. */
- if (atomic_read(&sec_gc_wait_del)) {
- CWARN("deletion pending, start over\n");
- mutex_up(&sec_gc_mutex);
+ if (cfs_atomic_read(&sec_gc_wait_del)) {
+ CDEBUG(D_SEC, "deletion pending, start over\n");
+ cfs_mutex_unlock(&sec_gc_mutex);
goto again;
}
sec_do_gc(sec);
}
- mutex_up(&sec_gc_mutex);
+ cfs_mutex_unlock(&sec_gc_mutex);
/* check ctx list again before sleep */
sec_process_ctx_list();
- lwi = LWI_TIMEOUT(SEC_GC_INTERVAL * HZ, NULL, NULL);
+ lwi = LWI_TIMEOUT(SEC_GC_INTERVAL * CFS_HZ, NULL, NULL);
l_wait_event(thread->t_ctl_waitq,
- thread->t_flags & (SVC_STOPPING | SVC_SIGNAL),
+ thread_is_stopping(thread) ||
+ thread_is_signal(thread),
&lwi);
- if (thread->t_flags & SVC_STOPPING) {
- thread->t_flags &= ~SVC_STOPPING;
+ if (thread_test_and_clear_flags(thread, SVC_STOPPING))
break;
- }
}
- thread->t_flags = SVC_STOPPED;
+ thread_set_flags(thread, SVC_STOPPED);
cfs_waitq_signal(&thread->t_ctl_waitq);
return 0;
}
-int sptlrpc_gc_start_thread(void)
+int sptlrpc_gc_init(void)
{
struct l_wait_info lwi = { 0 };
int rc;
+ cfs_mutex_init(&sec_gc_mutex);
+ cfs_spin_lock_init(&sec_gc_list_lock);
+ cfs_spin_lock_init(&sec_gc_ctx_list_lock);
+
/* initialize thread control */
memset(&sec_gc_thread, 0, sizeof(sec_gc_thread));
cfs_waitq_init(&sec_gc_thread.t_ctl_waitq);
- rc = cfs_kernel_thread(sec_gc_main, &sec_gc_thread,
- CLONE_VM | CLONE_FILES);
+ rc = cfs_create_thread(sec_gc_main, &sec_gc_thread, CFS_DAEMON_FLAGS);
if (rc < 0) {
CERROR("can't start gc thread: %d\n", rc);
return rc;
}
l_wait_event(sec_gc_thread.t_ctl_waitq,
- sec_gc_thread.t_flags & SVC_RUNNING, &lwi);
+ thread_is_running(&sec_gc_thread), &lwi);
return 0;
}
-void sptlrpc_gc_stop_thread(void)
+void sptlrpc_gc_fini(void)
{
struct l_wait_info lwi = { 0 };
- sec_gc_thread.t_flags = SVC_STOPPING;
+ thread_set_flags(&sec_gc_thread, SVC_STOPPING);
cfs_waitq_signal(&sec_gc_thread.t_ctl_waitq);
l_wait_event(sec_gc_thread.t_ctl_waitq,
- sec_gc_thread.t_flags & SVC_STOPPED, &lwi);
+ thread_is_stopped(&sec_gc_thread), &lwi);
}
#else /* !__KERNEL__ */
void sptlrpc_gc_del_sec(struct ptlrpc_sec *sec)
{
}
-int sptlrpc_gc_start_thread(void)
+int sptlrpc_gc_init(void)
{
return 0;
}
-void sptlrpc_gc_stop_thread(void)
+void sptlrpc_gc_fini(void)
{
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff