#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#include <linux/kthread.h>
#include "zfcp_ext.h"
#define ZFCP_MAX_ERPS 3
ZFCP_ERP_STEP_FSF_XCONFIG = 0x0001,
ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010,
ZFCP_ERP_STEP_PORT_CLOSING = 0x0100,
- ZFCP_ERP_STEP_NAMESERVER_LOOKUP = 0x0400,
ZFCP_ERP_STEP_PORT_OPENING = 0x0800,
ZFCP_ERP_STEP_UNIT_CLOSING = 0x1000,
ZFCP_ERP_STEP_UNIT_OPENING = 0x2000,
struct zfcp_adapter *adapter = act->adapter;
list_move(&act->list, &act->adapter->erp_ready_head);
- zfcp_rec_dbf_event_action("erardy1", act);
- up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread("erardy2", adapter);
+ zfcp_dbf_rec_action("erardy1", act);
+ wake_up(&adapter->erp_ready_wq);
+ zfcp_dbf_rec_thread("erardy2", adapter->dbf);
}
static void zfcp_erp_action_dismiss(struct zfcp_erp_action *act)
a_status = atomic_read(&adapter->status);
if (a_status & ZFCP_STATUS_COMMON_ERP_INUSE)
return 0;
+ if (!(a_status & ZFCP_STATUS_COMMON_RUNNING) &&
+ !(a_status & ZFCP_STATUS_COMMON_OPEN))
+ return 0; /* shutdown requested for closed adapter */
}
return need;
int retval = 1, need;
struct zfcp_erp_action *act = NULL;
- if (!(atomic_read(&adapter->status) &
- ZFCP_STATUS_ADAPTER_ERP_THREAD_UP))
+ if (!adapter->erp_thread)
return -EIO;
need = zfcp_erp_required_act(want, adapter, port, unit);
goto out;
++adapter->erp_total_count;
list_add_tail(&act->list, &adapter->erp_ready_head);
- up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread("eracte1", adapter);
+ wake_up(&adapter->erp_ready_wq);
+ zfcp_dbf_rec_thread("eracte1", adapter->dbf);
retval = 0;
out:
- zfcp_rec_dbf_event_trigger(id, ref, want, need, act,
- adapter, port, unit);
+ zfcp_dbf_rec_trigger(id, ref, want, need, act, adapter, port, unit);
return retval;
}
static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
{
if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status))
- zfcp_rec_dbf_event_adapter("eraubl1", NULL, adapter);
+ zfcp_dbf_rec_adapter("eraubl1", NULL, adapter->dbf);
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status);
}
static void zfcp_erp_port_unblock(struct zfcp_port *port)
{
if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status))
- zfcp_rec_dbf_event_port("erpubl1", NULL, port);
+ zfcp_dbf_rec_port("erpubl1", NULL, port);
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status);
}
static void zfcp_erp_unit_unblock(struct zfcp_unit *unit)
{
if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status))
- zfcp_rec_dbf_event_unit("eruubl1", NULL, unit);
+ zfcp_dbf_rec_unit("eruubl1", NULL, unit);
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status);
}
static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
{
list_move(&erp_action->list, &erp_action->adapter->erp_running_head);
- zfcp_rec_dbf_event_action("erator1", erp_action);
+ zfcp_dbf_rec_action("erator1", erp_action);
}
static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act)
if (act->status & (ZFCP_STATUS_ERP_DISMISSED |
ZFCP_STATUS_ERP_TIMEDOUT)) {
act->fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
- zfcp_rec_dbf_event_action("erscf_1", act);
+ zfcp_dbf_rec_action("erscf_1", act);
act->fsf_req->erp_action = NULL;
}
if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
- zfcp_rec_dbf_event_action("erscf_2", act);
- if (act->fsf_req->status & (ZFCP_STATUS_FSFREQ_COMPLETED |
- ZFCP_STATUS_FSFREQ_DISMISSED))
+ zfcp_dbf_rec_action("erscf_2", act);
+ if (act->fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED)
act->fsf_req = NULL;
} else
act->fsf_req = NULL;
static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *act)
{
- if (zfcp_qdio_open(act->adapter))
+ struct zfcp_qdio *qdio = act->adapter->qdio;
+
+ if (zfcp_qdio_open(qdio))
return ZFCP_ERP_FAILED;
- init_waitqueue_head(&act->adapter->request_wq);
+ init_waitqueue_head(&qdio->req_q_wq);
atomic_set_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &act->adapter->status);
return ZFCP_ERP_SUCCEEDED;
}
return ZFCP_ERP_FAILED;
}
- zfcp_rec_dbf_event_thread_lock("erasfx1", adapter);
- down(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread_lock("erasfx2", adapter);
+ zfcp_dbf_rec_thread_lock("erasfx1", adapter->dbf);
+ wait_event(adapter->erp_ready_wq,
+ !list_empty(&adapter->erp_ready_head));
+ zfcp_dbf_rec_thread_lock("erasfx2", adapter->dbf);
if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT)
break;
if (ret)
return ZFCP_ERP_FAILED;
- zfcp_rec_dbf_event_thread_lock("erasox1", adapter);
- down(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread_lock("erasox2", adapter);
+ zfcp_dbf_rec_thread_lock("erasox1", adapter->dbf);
+ wait_event(adapter->erp_ready_wq,
+ !list_empty(&adapter->erp_ready_head));
+ zfcp_dbf_rec_thread_lock("erasox2", adapter->dbf);
if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
return ZFCP_ERP_FAILED;
struct zfcp_adapter *adapter = act->adapter;
/* close queues to ensure that buffers are not accessed by adapter */
- zfcp_qdio_close(adapter);
+ zfcp_qdio_close(adapter->qdio);
zfcp_fsf_req_dismiss_all(adapter);
adapter->fsf_req_seq_no = 0;
- zfcp_fc_wka_port_force_offline(&adapter->gs->ds);
+ zfcp_fc_wka_ports_force_offline(adapter->gs);
/* all ports and units are closed */
zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL,
ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
return zfcp_erp_port_strategy_open_port(act);
}
-void zfcp_erp_port_strategy_open_lookup(struct work_struct *work)
-{
- int retval;
- struct zfcp_port *port = container_of(work, struct zfcp_port,
- gid_pn_work);
-
- retval = zfcp_fc_ns_gid_pn(&port->erp_action);
- if (!retval) {
- port->erp_action.step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP;
- goto out;
- }
- if (retval == -ENOMEM) {
- zfcp_erp_notify(&port->erp_action, ZFCP_STATUS_ERP_LOWMEM);
- goto out;
- }
- /* all other error condtions */
- zfcp_erp_notify(&port->erp_action, 0);
-out:
- zfcp_port_put(port);
-}
-
static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act)
{
struct zfcp_adapter *adapter = act->adapter;
return zfcp_erp_open_ptp_port(act);
if (!port->d_id) {
zfcp_port_get(port);
- if (!queue_work(zfcp_data.work_queue,
+ if (!queue_work(adapter->work_queue,
&port->gid_pn_work))
zfcp_port_put(port);
- return ZFCP_ERP_CONTINUES;
+ return ZFCP_ERP_EXIT;
}
- /* fall through */
- case ZFCP_ERP_STEP_NAMESERVER_LOOKUP:
- if (!port->d_id)
- return ZFCP_ERP_FAILED;
return zfcp_erp_port_strategy_open_port(act);
case ZFCP_ERP_STEP_PORT_OPENING:
}
list_del(&erp_action->list);
- zfcp_rec_dbf_event_action("eractd1", erp_action);
+ zfcp_dbf_rec_action("eractd1", erp_action);
switch (erp_action->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
struct list_head *next;
struct zfcp_erp_action *act;
unsigned long flags;
- int ignore;
-
- daemonize("zfcperp%s", dev_name(&adapter->ccw_device->dev));
- /* Block all signals */
- siginitsetinv(¤t->blocked, 0);
- atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- wake_up(&adapter->erp_thread_wqh);
- while (!(atomic_read(&adapter->status) &
- ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL)) {
+ for (;;) {
+ zfcp_dbf_rec_thread_lock("erthrd1", adapter->dbf);
+ wait_event_interruptible(adapter->erp_ready_wq,
+ !list_empty(&adapter->erp_ready_head) ||
+ kthread_should_stop());
+ zfcp_dbf_rec_thread_lock("erthrd2", adapter->dbf);
- zfcp_rec_dbf_event_thread_lock("erthrd1", adapter);
- ignore = down_interruptible(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread_lock("erthrd2", adapter);
+ if (kthread_should_stop())
+ break;
write_lock_irqsave(&adapter->erp_lock, flags);
next = adapter->erp_ready_head.next;
}
}
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- wake_up(&adapter->erp_thread_wqh);
-
return 0;
}
*/
int zfcp_erp_thread_setup(struct zfcp_adapter *adapter)
{
- int retval;
+ struct task_struct *thread;
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- retval = kernel_thread(zfcp_erp_thread, adapter, SIGCHLD);
- if (retval < 0) {
+ thread = kthread_run(zfcp_erp_thread, adapter, "zfcperp%s",
+ dev_name(&adapter->ccw_device->dev));
+ if (IS_ERR(thread)) {
dev_err(&adapter->ccw_device->dev,
"Creating an ERP thread for the FCP device failed.\n");
- return retval;
+ return PTR_ERR(thread);
}
- wait_event(adapter->erp_thread_wqh,
- atomic_read(&adapter->status) &
- ZFCP_STATUS_ADAPTER_ERP_THREAD_UP);
+
+ adapter->erp_thread = thread;
return 0;
}
*/
void zfcp_erp_thread_kill(struct zfcp_adapter *adapter)
{
- atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status);
- up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread_lock("erthrk1", adapter);
-
- wait_event(adapter->erp_thread_wqh,
- !(atomic_read(&adapter->status) &
- ZFCP_STATUS_ADAPTER_ERP_THREAD_UP));
-
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL,
- &adapter->status);
+ kthread_stop(adapter->erp_thread);
+ adapter->erp_thread = NULL;
+ WARN_ON(!list_empty(&adapter->erp_ready_head));
+ WARN_ON(!list_empty(&adapter->erp_running_head));
}
/**
if (set_or_clear == ZFCP_SET) {
if (status_change_set(mask, &adapter->status))
- zfcp_rec_dbf_event_adapter(id, ref, adapter);
+ zfcp_dbf_rec_adapter(id, ref, adapter->dbf);
atomic_set_mask(mask, &adapter->status);
} else {
if (status_change_clear(mask, &adapter->status))
- zfcp_rec_dbf_event_adapter(id, ref, adapter);
+ zfcp_dbf_rec_adapter(id, ref, adapter->dbf);
atomic_clear_mask(mask, &adapter->status);
if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
atomic_set(&adapter->erp_counter, 0);
if (set_or_clear == ZFCP_SET) {
if (status_change_set(mask, &port->status))
- zfcp_rec_dbf_event_port(id, ref, port);
+ zfcp_dbf_rec_port(id, ref, port);
atomic_set_mask(mask, &port->status);
} else {
if (status_change_clear(mask, &port->status))
- zfcp_rec_dbf_event_port(id, ref, port);
+ zfcp_dbf_rec_port(id, ref, port);
atomic_clear_mask(mask, &port->status);
if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
atomic_set(&port->erp_counter, 0);
{
if (set_or_clear == ZFCP_SET) {
if (status_change_set(mask, &unit->status))
- zfcp_rec_dbf_event_unit(id, ref, unit);
+ zfcp_dbf_rec_unit(id, ref, unit);
atomic_set_mask(mask, &unit->status);
} else {
if (status_change_clear(mask, &unit->status))
- zfcp_rec_dbf_event_unit(id, ref, unit);
+ zfcp_dbf_rec_unit(id, ref, unit);
atomic_clear_mask(mask, &unit->status);
if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) {
atomic_set(&unit->erp_counter, 0);
projects / mv-sheeva.git / blobdiff