Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1f8bdae9ef8e1ed2b208cdbaadb91061ede30212
Commit: 1f8bdae9ef8e1ed2b208cdbaadb91061ede30212
Parent: a4c48a2691189cec0359ac13b41726d3005ef2f5
Author: Ursula Braun <[EMAIL PROTECTED]>
AuthorDate: Wed May 2 15:18:07 2007 +0200
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Tue May 8 01:16:23 2007 -0400
s390: free skbs in finite amount of time in qeth
Free sent skbs in some finite amount of time. Affected are
asynchronous queue of Hipersockets devices and the output
queues of all eth-devices respectively.
Signed-off-by: Ursula Braun <[EMAIL PROTECTED]>
Signed-off-by: Frank Pavlic <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/s390/cio/qdio.c | 37 +++++++++++++++++++++++++++----------
drivers/s390/cio/qdio.h | 4 +++-
drivers/s390/net/qeth_main.c | 14 ++++++++------
include/asm-s390/qdio.h | 1 +
4 files changed, 39 insertions(+), 17 deletions(-)
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index cba64e4..f770018 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -996,18 +996,25 @@ __qdio_outbound_processing(struct qdio_q *q)
if (qdio_has_outbound_q_moved(q))
qdio_kick_outbound_handler(q);
- if (q->is_iqdio_q) {
+ if (q->queue_type == QDIO_ZFCP_QFMT) {
+ if ((!q->hydra_gives_outbound_pcis) &&
+ (!qdio_is_outbound_q_done(q)))
+ qdio_mark_q(q);
+ }
+ else if (((!q->is_iqdio_q) && (!q->is_pci_out)) ||
+ (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH)) {
/*
- * for asynchronous queues, we better check, if the sent
- * buffer is already switched from PRIMED to EMPTY.
+ * make sure buffer switch from PRIMED to EMPTY is noticed
+ * and outbound_handler is called
*/
- if ((q->queue_type == QDIO_IQDIO_QFMT_ASYNCH) &&
- !qdio_is_outbound_q_done(q))
- qdio_mark_q(q);
-
- } else if (!q->hydra_gives_outbound_pcis)
- if (!qdio_is_outbound_q_done(q))
- qdio_mark_q(q);
+ if (qdio_is_outbound_q_done(q)) {
+ del_timer(&q->timer);
+ } else {
+ if (!timer_pending(&q->timer))
+ mod_timer(&q->timer, jiffies +
+ QDIO_FORCE_CHECK_TIMEOUT);
+ }
+ }
qdio_release_q(q);
}
@@ -1826,6 +1833,7 @@ qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device
*cdev,
q->queue_type = QDIO_IQDIO_QFMT_ASYNCH;
q->int_parm=int_parm;
q->is_input_q=0;
+ q->is_pci_out = 0;
q->schid = irq_ptr->schid;
q->cdev = cdev;
q->irq_ptr = irq_ptr;
@@ -1838,6 +1846,10 @@ qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device
*cdev,
q->tasklet.data=(unsigned long)q;
q->tasklet.func=(void(*)(unsigned long))
&qdio_outbound_processing;
+ q->timer.function=(void(*)(unsigned long))
+ &qdio_outbound_processing;
+ q->timer.data = (long)q;
+ init_timer(&q->timer);
atomic_set(&q->busy_siga_counter,0);
q->timing.busy_start=0;
@@ -2635,6 +2647,7 @@ qdio_shutdown(struct ccw_device *cdev, int how)
for (i=0;i<irq_ptr->no_output_qs;i++) {
tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
+ del_timer(&irq_ptr->output_qs[i]->timer);
wait_event_interruptible_timeout(cdev->private->wait_q,
!atomic_read(&irq_ptr->
output_qs[i]->
@@ -3458,6 +3471,10 @@ do_qdio_handle_outbound(struct qdio_q *q, unsigned int
callflags,
qdio_perf_stat_inc(&perf_stats.outbound_cnt);
return;
}
+ if (callflags & QDIO_FLAG_PCI_OUT)
+ q->is_pci_out = 1;
+ else
+ q->is_pci_out = 0;
if (q->is_iqdio_q) {
/* one siga for every sbal */
while (count--)
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 2895392..6d7aad1 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -60,6 +60,7 @@
#define QDIO_ACTIVATE_TIMEOUT ((5*HZ)>>10)
#define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
#define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
+#define QDIO_FORCE_CHECK_TIMEOUT (10*HZ)
enum qdio_irq_states {
QDIO_IRQ_STATE_INACTIVE,
@@ -511,8 +512,8 @@ struct qdio_q {
void *irq_ptr;
-#ifdef QDIO_USE_TIMERS_FOR_POLLING
struct timer_list timer;
+#ifdef QDIO_USE_TIMERS_FOR_POLLING
atomic_t timer_already_set;
spinlock_t timer_lock;
#else /* QDIO_USE_TIMERS_FOR_POLLING */
@@ -558,6 +559,7 @@ struct qdio_q {
} timing;
atomic_t busy_siga_counter;
unsigned int queue_type;
+ unsigned int is_pci_out;
/* leave this member at the end. won't be cleared in qdio_fill_qs */
struct slib *slib; /* a page is allocated under this pointer,
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index 0324835..134f08c 100644
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -2816,6 +2816,7 @@ qeth_flush_buffers(struct qeth_qdio_out_q *queue, int
under_int,
struct qeth_qdio_out_buffer *buf;
int rc;
int i;
+ unsigned int qdio_flags;
QETH_DBF_TEXT(trace, 6, "flushbuf");
@@ -2859,13 +2860,13 @@ qeth_flush_buffers(struct qeth_qdio_out_q *queue, int
under_int,
queue->card->perf_stats.outbound_do_qdio_start_time =
qeth_get_micros();
}
+ qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
if (under_int)
- rc = do_QDIO(CARD_DDEV(queue->card),
- QDIO_FLAG_SYNC_OUTPUT | QDIO_FLAG_UNDER_INTERRUPT,
- queue->queue_no, index, count, NULL);
- else
- rc = do_QDIO(CARD_DDEV(queue->card), QDIO_FLAG_SYNC_OUTPUT,
- queue->queue_no, index, count, NULL);
+ qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;
+ if (atomic_read(&queue->set_pci_flags_count))
+ qdio_flags |= QDIO_FLAG_PCI_OUT;
+ rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
+ queue->queue_no, index, count, NULL);
if (queue->card->options.performance_stats)
queue->card->perf_stats.outbound_do_qdio_time +=
qeth_get_micros() -
@@ -8498,6 +8499,7 @@ __qeth_reboot_event_card(struct device *dev, void *data)
card = (struct qeth_card *) dev->driver_data;
qeth_clear_ip_list(card, 0, 0);
qeth_qdio_clear_card(card, 0);
+ qeth_clear_qdio_buffers(card);
return 0;
}
diff --git a/include/asm-s390/qdio.h b/include/asm-s390/qdio.h
index 127f72e..74db1dc 100644
--- a/include/asm-s390/qdio.h
+++ b/include/asm-s390/qdio.h
@@ -120,6 +120,7 @@ extern unsigned long qdio_get_status(int irq);
#define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on
adapter interrupts */
#define QDIO_FLAG_DONT_SIGA 0x10
+#define QDIO_FLAG_PCI_OUT 0x20
extern int do_QDIO(struct ccw_device*, unsigned int flags,
unsigned int queue_number,
-
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