/*
* Copyright (C) 2012 Cray, Inc.
*
+ * Copyright (c) 2013, 2014, Intel Corporation.
+ *
* Author: Nic Henke <nic@cray.com>
* Author: James Shimek <jshimek@cray.com>
*
kgn_data_t kgnilnd_data;
+int
+kgnilnd_thread_start(int(*fn)(void *arg), void *arg, char *name, int id)
+{
+ struct task_struct *thrd;
+
+ thrd = kthread_run(fn, arg, "%s_%02d", name, id);
+ if (IS_ERR(thrd))
+ return PTR_ERR(thrd);
+
+ atomic_inc(&kgnilnd_data.kgn_nthreads);
+ return 0;
+}
+
+/* bind scheduler threads to cpus */
+int
+kgnilnd_start_sd_threads(void)
+{
+ int cpu;
+ int i = 0;
+ struct task_struct *task;
+
+ for_each_online_cpu(cpu) {
+ /* don't bind to cpu 0 - all interrupts are processed here */
+ if (cpu == 0)
+ continue;
+
+ task = kthread_create(kgnilnd_scheduler, (void *)((long)i),
+ "%s_%02d", "kgnilnd_sd", i);
+ if (!IS_ERR(task)) {
+ kthread_bind(task, cpu);
+ wake_up_process(task);
+ } else {
+ CERROR("Can't spawn gnilnd scheduler[%d] %ld\n", i,
+ PTR_ERR(task));
+ return PTR_ERR(task);
+ }
+ atomic_inc(&kgnilnd_data.kgn_nthreads);
+
+ if (++i >= *kgnilnd_tunables.kgn_sched_threads) {
+ break;
+ }
+ }
+
+ return 0;
+}
+
/* needs write_lock on kgn_peer_conn_lock */
int
kgnilnd_close_stale_conns_locked(kgn_peer_t *peer, kgn_conn_t *newconn)
return -ENOMEM;
}
- LIBCFS_ALLOC(conn->gnc_tx_ref_table, GNILND_MAX_MSG_ID * sizeof(void *));
+ conn->gnc_tx_ref_table =
+ kgnilnd_vzalloc(GNILND_MAX_MSG_ID * sizeof(void *));
if (conn->gnc_tx_ref_table == NULL) {
CERROR("Can't allocate conn tx_ref_table\n");
GOTO(failed, rc = -ENOMEM);
}
+ mutex_init(&conn->gnc_smsg_mutex);
+ mutex_init(&conn->gnc_rdma_mutex);
atomic_set(&conn->gnc_refcount, 1);
atomic_set(&conn->gnc_reaper_noop, 0);
atomic_set(&conn->gnc_sched_noop, 0);
}
void
-kgnilnd_peer_notify(kgn_peer_t *peer, int error)
+kgnilnd_peer_notify(kgn_peer_t *peer, int error, int alive)
{
int tell_lnet = 0;
int nnets = 0;
peer, libcfs_nid2str(peer->gnp_nid), peer->gnp_connecting, conn,
kgnilnd_data.kgn_in_reset, error);
- if ((peer->gnp_connecting == GNILND_PEER_IDLE) &&
+ if (((peer->gnp_connecting == GNILND_PEER_IDLE) &&
(conn == NULL) &&
(!kgnilnd_data.kgn_in_reset) &&
- (!kgnilnd_conn_clean_errno(error))) {
+ (!kgnilnd_conn_clean_errno(error))) || alive) {
tell_lnet = 1;
}
peer, libcfs_nid2str(peer_nid), peer->gnp_last_alive,
cfs_duration_sec(jiffies - peer->gnp_last_alive));
- lnet_notify(net->gnn_ni, peer_nid, 0, peer->gnp_last_alive);
-
+ lnet_notify(net->gnn_ni, peer_nid, alive,
+ peer->gnp_last_alive);
kgnilnd_net_decref(net);
}
conn->gnc_state = GNILND_CONN_CLOSING;
}
+ if (CFS_FAIL_CHECK(CFS_FAIL_GNI_RDMA_CQ_ERROR)) {
+ msleep_interruptible(MSEC_PER_SEC);
+ }
+
/* leave on peer->gnp_conns to make sure we don't let the reaper
* or others try to unlink this peer until the conn is fully
* processed for closing */
/* I'm telling Mommy! - use peer_error if they initiated close */
kgnilnd_peer_notify(conn->gnc_peer,
- conn->gnc_error == -ECONNRESET ? conn->gnc_peer_error
- : conn->gnc_error);
+ conn->gnc_error == -ECONNRESET ?
+ conn->gnc_peer_error : conn->gnc_error, 0);
EXIT;
}
* make sure we tell LNet - if this is from other context,
* the checks in the function will prevent an errant
* notification */
- kgnilnd_peer_notify(conn->gnc_peer, conn->gnc_error);
+ kgnilnd_peer_notify(conn->gnc_peer, conn->gnc_error, 0);
list_for_each_entry_safe(gmp, gmpN, &conn->gnc_mdd_list,
gmp_list) {
atomic_read(&kgnilnd_data.kgn_npending_detach) ||
atomic_read(&kgnilnd_data.kgn_npending_unlink)) {
- cfs_pause(cfs_time_seconds(1));
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
i++;
CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, "Waiting on %d peers %d closes %d detaches\n",
*device_id = conn->gnc_device->gnd_host_id;
*peerstamp = conn->gnc_peerstamp;
- *tx_seq = conn->gnc_tx_seq;
- *rx_seq = conn->gnc_rx_seq;
+ *tx_seq = atomic_read(&conn->gnc_tx_seq);
+ *rx_seq = atomic_read(&conn->gnc_rx_seq);
*fmaq_len = kgnilnd_count_list(&conn->gnc_fmaq);
*nfma = atomic_read(&conn->gnc_nlive_fma);
*nrdma = atomic_read(&conn->gnc_nlive_rdma);
* kgnilnd_tx_done
*/
kgnilnd_txlist_done(&zombies, -ENETRESET);
-
- if (*kgnilnd_tunables.kgn_peer_health) {
- kgnilnd_peer_notify(peer, -ECONNRESET);
- }
+ kgnilnd_peer_notify(peer, -ECONNRESET, 0);
+ LCONSOLE_INFO("Received down event for nid %d\n",
+ LNET_NIDADDR(nid));
}
- CDEBUG(D_INFO, "marking nid %lld %s\n", nid, down ? "down" : "up");
return 0;
}
kgn_tx_t *tx;
kgn_peer_t *peer = NULL;
kgn_conn_t *conn = NULL;
- lnet_process_id_t id = {.nid = nid, .pid = LUSTRE_SRV_LNET_PID};
+ lnet_process_id_t id = {
+ .nid = nid,
+ .pid = LNET_PID_LUSTRE,
+ };
ENTRY;
/* I expect to find him, so only take a read lock */
cq_size = *kgnilnd_tunables.kgn_credits * 2 * 3;
rrc = kgnilnd_cdm_create(dev->gnd_id, *kgnilnd_tunables.kgn_ptag,
- GNILND_COOKIE, 0,
+ *kgnilnd_tunables.kgn_pkey, 0,
&dev->gnd_domain);
if (rrc != GNI_RC_SUCCESS) {
CERROR("Can't create CDM %d (%d)\n", dev->gnd_id, rrc);
}
CDEBUG(D_NET, "NIC %x -> NID %d\n", dev->gnd_host_id, dev->gnd_nid);
- rrc = kgnilnd_cq_create(dev->gnd_handle, cq_size,
+ rrc = kgnilnd_cq_create(dev->gnd_handle, *kgnilnd_tunables.kgn_credits,
0, kgnilnd_device_callback,
dev->gnd_id, &dev->gnd_snd_rdma_cqh);
if (rrc != GNI_RC_SUCCESS) {
GOTO(failed, rc = -EINVAL);
}
+ rrc = kgnilnd_register_smdd_buf(dev);
+ if (rrc != GNI_RC_SUCCESS) {
+ GOTO(failed, rc = -EINVAL);
+ }
+
RETURN(0);
failed:
atomic_read(&kgnilnd_data.kgn_nthreads) == 0,
"tried to shutdown with threads active\n");
+ if (dev->gnd_smdd_hold_buf) {
+ rrc = kgnilnd_deregister_smdd_buf(dev);
+ LASSERTF(rrc == GNI_RC_SUCCESS,
+ "bad rc from deregistion of sMDD buffer: %d\n", rrc);
+ dev->gnd_smdd_hold_buf = NULL;
+ }
+
if (dev->gnd_rcv_fma_cqh) {
rrc = kgnilnd_cq_destroy(dev->gnd_rcv_fma_cqh);
LASSERTF(rrc == GNI_RC_SUCCESS,
dev->gnd_domain = NULL;
}
- sock_release(kgnilnd_data.kgn_sock);
+ if (kgnilnd_data.kgn_sock)
+ sock_release(kgnilnd_data.kgn_sock);
EXIT;
}
-
int kgnilnd_base_startup(void)
{
struct timeval tv;
int i;
kgn_device_t *dev;
struct task_struct *thrd;
+
+#if defined(CONFIG_CRAY_XT) && !defined(CONFIG_CRAY_COMPUTE)
+ /* limit how much memory can be allocated for fma blocks in
+ * instances where many nodes need to reconnects at the same time */
+ struct sysinfo si;
+ si_meminfo(&si);
+ kgnilnd_data.free_pages_limit = si.totalram/4;
+#endif
+
ENTRY;
LASSERTF(kgnilnd_data.kgn_init == GNILND_INIT_NOTHING,
/* zero pointers, flags etc */
memset(&kgnilnd_data, 0, sizeof(kgnilnd_data));
+ kgnilnd_check_kgni_version();
/* CAVEAT EMPTOR: Every 'Fma' message includes the sender's NID and
* a unique (for all time) connstamp so we can uniquely identify
}
/* threads will load balance across devs as they are available */
- for (i = 0; i < *kgnilnd_tunables.kgn_sched_threads; i++) {
- rc = kgnilnd_thread_start(kgnilnd_scheduler, (void *)((long)i),
- "kgnilnd_sd", i);
- if (rc != 0) {
- CERROR("Can't spawn gnilnd scheduler[%d]: %d\n",
- i, rc);
+ if (*kgnilnd_tunables.kgn_thread_affinity) {
+ rc = kgnilnd_start_sd_threads();
+ if (rc != 0)
GOTO(failed, rc);
+ } else {
+ for (i = 0; i < *kgnilnd_tunables.kgn_sched_threads; i++) {
+ rc = kgnilnd_thread_start(kgnilnd_scheduler,
+ (void *)((long)i),
+ "kgnilnd_sd", i);
+ if (rc != 0) {
+ CERROR("Can't spawn gnilnd scheduler[%d]: %d\n",
+ i, rc);
+ GOTO(failed, rc);
+ }
}
}
}
}
-
-
/* flag everything initialised */
kgnilnd_data.kgn_init = GNILND_INIT_ALL;
/*****************************************************/
CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET,
"Waiting for conns to be cleaned up %d\n",atomic_read(&kgnilnd_data.kgn_nconns));
- cfs_pause(cfs_time_seconds(1));
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
}
/* Peer state all cleaned up BEFORE setting shutdown, so threads don't
* have to worry about shutdown races. NB connections may be created
i++;
CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET,
"Waiting for ruhroh thread to terminate\n");
- cfs_pause(cfs_time_seconds(1));
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
}
/* Flag threads to terminate */
wake_up_all(&kgnilnd_data.kgn_reaper_waitq);
spin_unlock(&kgnilnd_data.kgn_reaper_lock);
- kgnilnd_wakeup_rca_thread();
+ if (atomic_read(&kgnilnd_data.kgn_nthreads))
+ kgnilnd_wakeup_rca_thread();
/* Wait for threads to exit */
i = 2;
CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */
"Waiting for %d threads to terminate\n",
atomic_read(&kgnilnd_data.kgn_nthreads));
- cfs_pause(cfs_time_seconds(1));
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
}
LASSERTF(atomic_read(&kgnilnd_data.kgn_npeers) == 0,
"Waiting for %d references to clear on net %d\n",
atomic_read(&net->gnn_refcount),
net->gnn_netnum);
- cfs_pause(cfs_time_seconds(1));
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
}
/* release ref from kgnilnd_startup */
EXIT;
}
-void __exit
-kgnilnd_module_fini(void)
+static void __exit kgnilnd_exit(void)
{
lnet_unregister_lnd(&the_kgnilnd);
kgnilnd_proc_fini();
kgnilnd_remove_sysctl();
- kgnilnd_tunables_fini();
}
-int __init
-kgnilnd_module_init(void)
+static int __init kgnilnd_init(void)
{
int rc;
}
MODULE_AUTHOR("Cray, Inc. <nic@cray.com>");
-MODULE_DESCRIPTION("Kernel Gemini LND v"KGNILND_BUILD_REV);
+MODULE_DESCRIPTION("Gemini LNet Network Driver");
+MODULE_VERSION(KGNILND_BUILD_REV);
MODULE_LICENSE("GPL");
-module_init(kgnilnd_module_init);
-module_exit(kgnilnd_module_fini);
+module_init(kgnilnd_init);
+module_exit(kgnilnd_exit);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff