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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 08:41:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 08:41:00 -0700
commitebb067d2f4e2db59b076f9c9cba0375a8ad1e07c (patch)
tree8d4fc065ab0fd45fca9483acfff93d4a6c74e981 /drivers/s390/net
parent33caee39925b887a99a2400dc5c980097c3573f9 (diff)
parent36e7fdaa1a04fcf65b864232e1af56a51c7814d6 (diff)
downloadtalos-op-linux-ebb067d2f4e2db59b076f9c9cba0375a8ad1e07c.tar.gz
talos-op-linux-ebb067d2f4e2db59b076f9c9cba0375a8ad1e07c.zip
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky: "Mostly cleanups and bug-fixes, with two exceptions. The first is lazy flushing of I/O-TLBs for PCI to improve performance, the second is software dirty bits in the pmd for the madvise-free implementation" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (24 commits) s390/locking: Reenable optimistic spinning s390/mm: implement dirty bits for large segment table entries KVM: s390/mm: Fix page table locking vs. split pmd lock s390/dasd: fix camel case s390/3215: fix hanging console issue s390/irq: improve displayed interrupt order in /proc/interrupts s390/seccomp: fix error return for filtered system calls s390/pci: introduce lazy IOTLB flushing for DMA unmap dasd: fix error recovery for alias devices during format dasd: fix list_del corruption during format dasd: fix unresponsive device during format dasd: use aliases for formatted devices during format s390/pci: fix kmsg component s390/kdump: Return NOTIFY_OK for all actions other than MEM_GOING_OFFLINE s390/watchdog: Fix module name in Kconfig help text s390/dasd: replace seq_printf by seq_puts s390/dasd: replace pr_warning by pr_warn s390/dasd: Move EXPORT_SYMBOL after function/variable s390/dasd: remove unnecessary null test before debugfs_remove s390/zfcp: use qdio buffer helpers ...
Diffstat (limited to 'drivers/s390/net')
-rw-r--r--drivers/s390/net/qeth_core.h8
-rw-r--r--drivers/s390/net/qeth_core_main.c161
2 files changed, 101 insertions, 68 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index bbafbd0e017a..97ef37b51068 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -439,10 +439,10 @@ struct qeth_qdio_buffer {
};
struct qeth_qdio_q {
- struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
+ struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
int next_buf_to_init;
-} __attribute__ ((aligned(256)));
+};
struct qeth_qdio_out_buffer {
struct qdio_buffer *buffer;
@@ -465,7 +465,7 @@ enum qeth_out_q_states {
};
struct qeth_qdio_out_q {
- struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
+ struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
struct qdio_outbuf_state *bufstates; /* convenience pointer */
int queue_no;
@@ -483,7 +483,7 @@ struct qeth_qdio_out_q {
atomic_t used_buffers;
/* indicates whether PCI flag must be set (or if one is outstanding) */
atomic_t set_pci_flags_count;
-} __attribute__ ((aligned(256)));
+};
struct qeth_qdio_info {
atomic_t state;
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 71bfacfc097e..c0d6ba8655c7 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -292,14 +292,43 @@ int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
}
EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
+static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
+{
+ if (!q)
+ return;
+
+ qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
+ kfree(q);
+}
+
+static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
+{
+ struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
+ int i;
+
+ if (!q)
+ return NULL;
+
+ if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
+ kfree(q);
+ return NULL;
+ }
+
+ for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
+ q->bufs[i].buffer = q->qdio_bufs[i];
+
+ QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
+ return q;
+}
+
static inline int qeth_cq_init(struct qeth_card *card)
{
int rc;
if (card->options.cq == QETH_CQ_ENABLED) {
QETH_DBF_TEXT(SETUP, 2, "cqinit");
- memset(card->qdio.c_q->qdio_bufs, 0,
- QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
+ qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
+ QDIO_MAX_BUFFERS_PER_Q);
card->qdio.c_q->next_buf_to_init = 127;
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
card->qdio.no_in_queues - 1, 0,
@@ -323,21 +352,12 @@ static inline int qeth_alloc_cq(struct qeth_card *card)
struct qdio_outbuf_state *outbuf_states;
QETH_DBF_TEXT(SETUP, 2, "cqon");
- card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
- GFP_KERNEL);
+ card->qdio.c_q = qeth_alloc_qdio_queue();
if (!card->qdio.c_q) {
rc = -1;
goto kmsg_out;
}
- QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
-
- for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
- card->qdio.c_q->bufs[i].buffer =
- &card->qdio.c_q->qdio_bufs[i];
- }
-
card->qdio.no_in_queues = 2;
-
card->qdio.out_bufstates =
kzalloc(card->qdio.no_out_queues *
QDIO_MAX_BUFFERS_PER_Q *
@@ -361,7 +381,7 @@ static inline int qeth_alloc_cq(struct qeth_card *card)
out:
return rc;
free_cq_out:
- kfree(card->qdio.c_q);
+ qeth_free_qdio_queue(card->qdio.c_q);
card->qdio.c_q = NULL;
kmsg_out:
dev_err(&card->gdev->dev, "Failed to create completion queue\n");
@@ -372,7 +392,7 @@ static inline void qeth_free_cq(struct qeth_card *card)
{
if (card->qdio.c_q) {
--card->qdio.no_in_queues;
- kfree(card->qdio.c_q);
+ qeth_free_qdio_queue(card->qdio.c_q);
card->qdio.c_q = NULL;
}
kfree(card->qdio.out_bufstates);
@@ -1282,35 +1302,6 @@ static void qeth_free_buffer_pool(struct qeth_card *card)
}
}
-static void qeth_free_qdio_buffers(struct qeth_card *card)
-{
- int i, j;
-
- if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
- QETH_QDIO_UNINITIALIZED)
- return;
-
- qeth_free_cq(card);
- cancel_delayed_work_sync(&card->buffer_reclaim_work);
- for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
- if (card->qdio.in_q->bufs[j].rx_skb)
- dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
- }
- kfree(card->qdio.in_q);
- card->qdio.in_q = NULL;
- /* inbound buffer pool */
- qeth_free_buffer_pool(card);
- /* free outbound qdio_qs */
- if (card->qdio.out_qs) {
- for (i = 0; i < card->qdio.no_out_queues; ++i) {
- qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
- kfree(card->qdio.out_qs[i]);
- }
- kfree(card->qdio.out_qs);
- card->qdio.out_qs = NULL;
- }
-}
-
static void qeth_clean_channel(struct qeth_channel *channel)
{
int cnt;
@@ -2392,7 +2383,7 @@ static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
rc = -ENOMEM;
goto out;
}
- newbuf->buffer = &q->qdio_bufs[bidx];
+ newbuf->buffer = q->qdio_bufs[bidx];
skb_queue_head_init(&newbuf->skb_list);
lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
newbuf->q = q;
@@ -2411,6 +2402,28 @@ out:
return rc;
}
+static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
+{
+ if (!q)
+ return;
+
+ qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
+ kfree(q);
+}
+
+static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
+{
+ struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
+
+ if (!q)
+ return NULL;
+
+ if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
+ kfree(q);
+ return NULL;
+ }
+ return q;
+}
static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
@@ -2422,19 +2435,11 @@ static int qeth_alloc_qdio_buffers(struct qeth_card *card)
QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
return 0;
- card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
- GFP_KERNEL);
+ QETH_DBF_TEXT(SETUP, 2, "inq");
+ card->qdio.in_q = qeth_alloc_qdio_queue();
if (!card->qdio.in_q)
goto out_nomem;
- QETH_DBF_TEXT(SETUP, 2, "inq");
- QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
- memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
- /* give inbound qeth_qdio_buffers their qdio_buffers */
- for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
- card->qdio.in_q->bufs[i].buffer =
- &card->qdio.in_q->qdio_bufs[i];
- card->qdio.in_q->bufs[i].rx_skb = NULL;
- }
+
/* inbound buffer pool */
if (qeth_alloc_buffer_pool(card))
goto out_freeinq;
@@ -2446,8 +2451,7 @@ static int qeth_alloc_qdio_buffers(struct qeth_card *card)
if (!card->qdio.out_qs)
goto out_freepool;
for (i = 0; i < card->qdio.no_out_queues; ++i) {
- card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
- GFP_KERNEL);
+ card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
if (!card->qdio.out_qs[i])
goto out_freeoutq;
QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
@@ -2476,7 +2480,7 @@ out_freeoutqbufs:
}
out_freeoutq:
while (i > 0) {
- kfree(card->qdio.out_qs[--i]);
+ qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
}
kfree(card->qdio.out_qs);
@@ -2484,13 +2488,42 @@ out_freeoutq:
out_freepool:
qeth_free_buffer_pool(card);
out_freeinq:
- kfree(card->qdio.in_q);
+ qeth_free_qdio_queue(card->qdio.in_q);
card->qdio.in_q = NULL;
out_nomem:
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
return -ENOMEM;
}
+static void qeth_free_qdio_buffers(struct qeth_card *card)
+{
+ int i, j;
+
+ if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
+ QETH_QDIO_UNINITIALIZED)
+ return;
+
+ qeth_free_cq(card);
+ cancel_delayed_work_sync(&card->buffer_reclaim_work);
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
+ if (card->qdio.in_q->bufs[j].rx_skb)
+ dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
+ }
+ qeth_free_qdio_queue(card->qdio.in_q);
+ card->qdio.in_q = NULL;
+ /* inbound buffer pool */
+ qeth_free_buffer_pool(card);
+ /* free outbound qdio_qs */
+ if (card->qdio.out_qs) {
+ for (i = 0; i < card->qdio.no_out_queues; ++i) {
+ qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
+ qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
+ }
+ kfree(card->qdio.out_qs);
+ card->qdio.out_qs = NULL;
+ }
+}
+
static void qeth_create_qib_param_field(struct qeth_card *card,
char *param_field)
{
@@ -2788,8 +2821,8 @@ int qeth_init_qdio_queues(struct qeth_card *card)
QETH_DBF_TEXT(SETUP, 2, "initqdqs");
/* inbound queue */
- memset(card->qdio.in_q->qdio_bufs, 0,
- QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
+ qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
+ QDIO_MAX_BUFFERS_PER_Q);
qeth_initialize_working_pool_list(card);
/*give only as many buffers to hardware as we have buffer pool entries*/
for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
@@ -2811,8 +2844,8 @@ int qeth_init_qdio_queues(struct qeth_card *card)
/* outbound queue */
for (i = 0; i < card->qdio.no_out_queues; ++i) {
- memset(card->qdio.out_qs[i]->qdio_bufs, 0,
- QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
+ qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
+ QDIO_MAX_BUFFERS_PER_Q);
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
qeth_clear_output_buffer(card->qdio.out_qs[i],
card->qdio.out_qs[i]->bufs[j],
@@ -3569,7 +3602,7 @@ static void qeth_qdio_cq_handler(struct qeth_card *card,
for (i = first_element; i < first_element + count; ++i) {
int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
- struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
+ struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
int e;
e = 0;
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