* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_RPC
-#ifdef __KERNEL__
-# include <libcfs/libcfs.h>
-#else /* __KERNEL__ */
-# include <liblustre.h>
-# include <ctype.h>
-#endif
-
+#include <linux/kthread.h>
+#include <libcfs/libcfs.h>
#include <lustre_net.h>
-# include <lustre_lib.h>
-
+#include <lustre_lib.h>
#include <lustre_ha.h>
#include <obd_class.h> /* for obd_zombie */
#include <obd_support.h> /* for OBD_FAIL_CHECK */
struct ptlrpcd_ctl pd_threads[0];
};
-#ifdef __KERNEL__
static int max_ptlrpcds;
CFS_MODULE_PARM(max_ptlrpcds, "i", int, 0644,
"Max ptlrpcd thread count to be started.");
static int ptlrpcd_bind_policy = PDB_POLICY_PAIR;
CFS_MODULE_PARM(ptlrpcd_bind_policy, "i", int, 0644,
"Ptlrpcd threads binding mode.");
-#endif
static struct ptlrpcd *ptlrpcds;
struct mutex ptlrpcd_mutex;
void ptlrpcd_wake(struct ptlrpc_request *req)
{
- struct ptlrpc_request_set *rq_set = req->rq_set;
-
- LASSERT(rq_set != NULL);
+ struct ptlrpc_request_set *set = req->rq_set;
- wake_up(&rq_set->set_waitq);
+ LASSERT(set != NULL);
+ wake_up(&set->set_waitq);
}
EXPORT_SYMBOL(ptlrpcd_wake);
if (req != NULL && req->rq_send_state != LUSTRE_IMP_FULL)
return &ptlrpcds->pd_thread_rcv;
-#ifdef __KERNEL__
switch (policy) {
case PDL_POLICY_SAME:
idx = smp_processor_id() % ptlrpcds->pd_nthreads;
ptlrpcds->pd_index = idx;
break;
}
-#endif /* __KERNEL__ */
return &ptlrpcds->pd_threads[idx];
}
void ptlrpcd_add_rqset(struct ptlrpc_request_set *set)
{
struct list_head *tmp, *pos;
-#ifdef __KERNEL__
struct ptlrpcd_ctl *pc;
struct ptlrpc_request_set *new;
int count, i;
pc = ptlrpcd_select_pc(NULL, PDL_POLICY_LOCAL, -1);
new = pc->pc_set;
-#endif
list_for_each_safe(pos, tmp, &set->set_requests) {
struct ptlrpc_request *req =
rq_set_chain);
LASSERT(req->rq_phase == RQ_PHASE_NEW);
-#ifdef __KERNEL__
req->rq_set = new;
req->rq_queued_time = cfs_time_current();
-#else
- list_del_init(&req->rq_set_chain);
- req->rq_set = NULL;
- ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
- atomic_dec(&set->set_remaining);
-#endif
}
-#ifdef __KERNEL__
spin_lock(&new->set_new_req_lock);
list_splice_init(&set->set_requests, &new->set_new_requests);
i = atomic_read(&set->set_remaining);
for (i = 0; i < pc->pc_npartners; i++)
wake_up(&pc->pc_partners[i]->pc_set->set_waitq);
}
-#endif
}
-EXPORT_SYMBOL(ptlrpcd_add_rqset);
-#ifdef __KERNEL__
/**
* Return transferred RPCs count.
*/
spin_unlock(&src->set_new_req_lock);
return rc;
}
-#endif
/**
* Requests that are added to the ptlrpcd queue are sent via
if (atomic_read(&set->set_remaining))
rc |= ptlrpc_check_set(env, set);
- if (!list_empty(&set->set_requests)) {
- /*
- * XXX: our set never completes, so we prune the completed
- * reqs after each iteration. boy could this be smarter.
- */
- list_for_each_safe(pos, tmp, &set->set_requests) {
- req = list_entry(pos, struct ptlrpc_request,
- rq_set_chain);
- if (req->rq_phase != RQ_PHASE_COMPLETE)
- continue;
+ /* NB: ptlrpc_check_set has already moved complted request at the
+ * head of seq::set_requests */
+ list_for_each_safe(pos, tmp, &set->set_requests) {
+ req = list_entry(pos, struct ptlrpc_request, rq_set_chain);
+ if (req->rq_phase != RQ_PHASE_COMPLETE)
+ break;
- list_del_init(&req->rq_set_chain);
- req->rq_set = NULL;
- ptlrpc_req_finished(req);
- }
+ list_del_init(&req->rq_set_chain);
+ req->rq_set = NULL;
+ ptlrpc_req_finished(req);
}
if (rc == 0) {
*/
rc = atomic_read(&set->set_new_count);
-#ifdef __KERNEL__
/* If we have nothing to do, check whether we can take some
* work from our partner threads. */
if (rc == 0 && pc->pc_npartners > 0) {
ptlrpc_reqset_put(ps);
} while (rc == 0 && pc->pc_cursor != first);
}
-#endif
}
RETURN(rc);
}
-#ifdef __KERNEL__
/**
* Main ptlrpcd thread.
* ptlrpc's code paths like to execute in process context, so we have this
#if defined(CONFIG_NUMA)
{
int i;
- mask = *cpumask_of_node(cpu_to_node(index));
+ cpumask_copy(&mask, cpumask_of_node(cpu_to_node(index)));
for (i = max; i < num_online_cpus(); i++)
- cpu_clear(i, mask);
- pc->pc_npartners = cpus_weight(mask) - 1;
+ cpumask_clear_cpu(i, &mask);
+ pc->pc_npartners = cpumask_weight(&mask) - 1;
set_bit(LIOD_BIND, &pc->pc_flags);
}
#else
* that are already initialized
*/
for (pidx = 0, i = 0; i < index; i++) {
- if (cpu_isset(i, mask)) {
+ if (cpumask_test_cpu(i, &mask)) {
ppc = &ptlrpcds->pd_threads[i];
pc->pc_partners[pidx++] = ppc;
ppc->pc_partners[ppc->
RETURN(rc);
}
-#else /* !__KERNEL__ */
-
-/**
- * In liblustre we do not have separate threads, so this function
- * is called from time to time all across common code to see
- * if something needs to be processed on ptlrpcd set.
- */
-int ptlrpcd_check_async_rpcs(void *arg)
-{
- struct ptlrpcd_ctl *pc = arg;
- int rc = 0;
-
- /*
- * Single threaded!!
- */
- pc->pc_recurred++;
-
- if (pc->pc_recurred == 1) {
- rc = lu_env_refill(&pc->pc_env);
- if (rc == 0) {
- lu_context_enter(&pc->pc_env.le_ctx);
- rc = ptlrpcd_check(&pc->pc_env, pc);
- if (!rc)
- ptlrpc_expired_set(pc->pc_set);
- /*
- * XXX: send replay requests.
- */
- if (test_bit(LIOD_RECOVERY, &pc->pc_flags))
- rc = ptlrpcd_check(&pc->pc_env, pc);
- lu_context_exit(&pc->pc_env.le_ctx);
- }
- }
-
- pc->pc_recurred--;
- return rc;
-}
-
-int ptlrpcd_idle(void *arg)
-{
- struct ptlrpcd_ctl *pc = arg;
-
- return (atomic_read(&pc->pc_set->set_new_count) == 0 &&
- atomic_read(&pc->pc_set->set_remaining) == 0);
-}
-
-#endif
int ptlrpcd_start(int index, int max, const char *name, struct ptlrpcd_ctl *pc)
{
if (pc->pc_set == NULL)
GOTO(out, rc = -ENOMEM);
-#ifndef __KERNEL__
- pc->pc_wait_callback =
- liblustre_register_wait_callback("ptlrpcd_check_async_rpcs",
- &ptlrpcd_check_async_rpcs, pc);
- pc->pc_idle_callback =
- liblustre_register_idle_callback("ptlrpcd_check_idle_rpcs",
- &ptlrpcd_idle, pc);
- RETURN(0);
-#else
/*
* So far only "client" ptlrpcd uses an environment. In the future,
* ptlrpcd thread (or a thread-set) has to be given an argument,
ptlrpc_set_destroy(set);
}
clear_bit(LIOD_BIND, &pc->pc_flags);
-#endif
out:
clear_bit(LIOD_START, &pc->pc_flags);
RETURN(rc);
goto out;
}
-#ifdef __KERNEL__
wait_for_completion(&pc->pc_finishing);
-#else
- liblustre_deregister_wait_callback(pc->pc_wait_callback);
- liblustre_deregister_idle_callback(pc->pc_idle_callback);
-#endif
lu_context_fini(&pc->pc_env.le_ctx);
spin_lock(&pc->pc_lock);
clear_bit(LIOD_BIND, &pc->pc_flags);
out:
-#ifdef __KERNEL__
if (pc->pc_npartners > 0) {
LASSERT(pc->pc_partners != NULL);
pc->pc_partners = NULL;
}
pc->pc_npartners = 0;
-#endif
EXIT;
}
int size, i = -1, j, rc = 0;
ENTRY;
-#ifdef __KERNEL__
if (max_ptlrpcds > 0 && max_ptlrpcds < nthreads)
nthreads = max_ptlrpcds;
if (nthreads < 2)
ptlrpcd_bind_policy = PDB_POLICY_PAIR;
else if (nthreads % 2 != 0 && ptlrpcd_bind_policy == PDB_POLICY_PAIR)
nthreads &= ~1; /* make sure it is even */
-#else
- nthreads = 1;
-#endif
size = offsetof(struct ptlrpcd, pd_threads[nthreads]);
OBD_ALLOC(ptlrpcds, size);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff