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Date: Mon, 8 Oct 2007 16:01:33 +0200
From: Jan-Bernd Themann <ossthema@...ibm.com>
To: Jeff Garzik <jeff@...zik.org>
Cc: netdev <netdev@...r.kernel.org>,
Christoph Raisch <raisch@...ibm.com>,
"Jan-Bernd Themann" <themann@...ibm.com>,
"linux-kernel" <linux-kernel@...r.kernel.org>,
"linux-ppc" <linuxppc-dev@...abs.org>,
Marcus Eder <meder@...ibm.com>,
Thomas Klein <tklein@...ibm.com>,
Stefan Roscher <stefan.roscher@...ibm.com>,
Anton Blanchard <anton@...ba.org>
Subject: [PATCH] ehea: use kernel event queue
eHEA recovery and DLPAR functions are called seldomly. The eHEA workqueues
are replaced by the kernel event queue.
Signed-off-by: Jan-Bernd Themann <themann@...ibm.com>
---
The patch has been built against upstream git
drivers/net/ehea/ehea.h | 3 +--
drivers/net/ehea/ehea_main.c | 28 ++++++++--------------------
drivers/net/ehea/ehea_qmr.c | 3 +--
3 files changed, 10 insertions(+), 24 deletions(-)
diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index 3022089..ac21526 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -40,7 +40,7 @@
#include <asm/io.h>
#define DRV_NAME "ehea"
-#define DRV_VERSION "EHEA_0077"
+#define DRV_VERSION "EHEA_0078"
/* eHEA capability flags */
#define DLPAR_PORT_ADD_REM 1
@@ -391,7 +391,6 @@ struct ehea_adapter {
struct ibmebus_dev *ebus_dev;
struct ehea_port *port[EHEA_MAX_PORTS];
struct ehea_eq *neq; /* notification event queue */
- struct workqueue_struct *ehea_wq;
struct tasklet_struct neq_tasklet;
struct ehea_mr mr;
u32 pd; /* protection domain */
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 5bc0a15..2ba57e6 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -94,7 +94,6 @@ MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
static int port_name_cnt = 0;
static LIST_HEAD(adapter_list);
u64 ehea_driver_flags = 0;
-struct workqueue_struct *ehea_driver_wq;
struct work_struct ehea_rereg_mr_task;
struct semaphore dlpar_mem_lock;
@@ -421,7 +420,7 @@ static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
ehea_error("Critical receive error. Resetting port.");
- queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
+ schedule_work(&pr->port->reset_task);
return 1;
}
@@ -596,8 +595,7 @@ static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
ehea_error("Send Completion Error: Resetting port");
if (netif_msg_tx_err(pr->port))
ehea_dump(cqe, sizeof(*cqe), "Send CQE");
- queue_work(pr->port->adapter->ehea_wq,
- &pr->port->reset_task);
+ schedule_work(&pr->port->reset_task);
break;
}
@@ -716,7 +714,7 @@ static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
eqe = ehea_poll_eq(port->qp_eq);
}
- queue_work(port->adapter->ehea_wq, &port->reset_task);
+ schedule_work(&port->reset_task);
return IRQ_HANDLED;
}
@@ -2395,7 +2393,7 @@ static int ehea_stop(struct net_device *dev)
if (netif_msg_ifdown(port))
ehea_info("disabling port %s", dev->name);
- flush_workqueue(port->adapter->ehea_wq);
+ flush_scheduled_work();
down(&port->port_lock);
netif_stop_queue(dev);
ret = ehea_down(dev);
@@ -2710,7 +2708,7 @@ static void ehea_tx_watchdog(struct net_device *dev)
if (netif_carrier_ok(dev) &&
!test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
- queue_work(port->adapter->ehea_wq, &port->reset_task);
+ schedule_work(&port->reset_task);
}
int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
@@ -3243,15 +3241,9 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
goto out_kill_eq;
}
- adapter->ehea_wq = create_workqueue("ehea_wq");
- if (!adapter->ehea_wq) {
- ret = -EIO;
- goto out_free_irq;
- }
-
ret = ehea_create_device_sysfs(dev);
if (ret)
- goto out_kill_wq;
+ goto out_free_irq;
ret = ehea_setup_ports(adapter);
if (ret) {
@@ -3265,9 +3257,6 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
out_rem_dev_sysfs:
ehea_remove_device_sysfs(dev);
-out_kill_wq:
- destroy_workqueue(adapter->ehea_wq);
-
out_free_irq:
ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
@@ -3293,7 +3282,7 @@ static int __devexit ehea_remove(struct ibmebus_dev *dev)
ehea_remove_device_sysfs(dev);
- destroy_workqueue(adapter->ehea_wq);
+ flush_scheduled_work();
ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
tasklet_kill(&adapter->neq_tasklet);
@@ -3351,7 +3340,6 @@ int __init ehea_module_init(void)
printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
DRV_VERSION);
- ehea_driver_wq = create_workqueue("ehea_driver_wq");
INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
sema_init(&dlpar_mem_lock, 1);
@@ -3385,7 +3373,7 @@ out:
static void __exit ehea_module_exit(void)
{
- destroy_workqueue(ehea_driver_wq);
+ flush_scheduled_work();
driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
ibmebus_unregister_driver(&ehea_driver);
ehea_destroy_busmap();
diff --git a/drivers/net/ehea/ehea_qmr.c b/drivers/net/ehea/ehea_qmr.c
index 329a252..83b7643 100644
--- a/drivers/net/ehea/ehea_qmr.c
+++ b/drivers/net/ehea/ehea_qmr.c
@@ -34,7 +34,6 @@
struct ehea_busmap ehea_bmap = { 0, 0, NULL };
extern u64 ehea_driver_flags;
-extern struct workqueue_struct *ehea_driver_wq;
extern struct work_struct ehea_rereg_mr_task;
@@ -618,7 +617,7 @@ u64 ehea_map_vaddr(void *caddr)
if (unlikely(mapped_addr == -1))
if (!test_and_set_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
- queue_work(ehea_driver_wq, &ehea_rereg_mr_task);
+ schedule_work(&ehea_rereg_mr_task);
return mapped_addr;
}
--
1.5.2
-
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