diff options
| author | Julian Wiedmann <jwi@linux.ibm.com> | 2021-06-11 09:33:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-11 12:49:15 -0700 |
| commit | bb7032ddc947ddde42cb695b5602e040167bce18 (patch) | |
| tree | ff615853deedd697b512c4ff44f131915c4c6f7c /drivers/s390 | |
| parent | 6b7ec41e574a399ed2165ae13975c531b00e1eb8 (diff) | |
| download | linux-bb7032ddc947ddde42cb695b5602e040167bce18.tar.gz | |
s390/qeth: shrink TX buffer struct
Convert the large boolean array into a bitmap, this substantially reduces the struct's size. While at it also clarify the naming. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/net/qeth_core.h | 2 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 7 |
2 files changed, 4 insertions, 5 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index ff1064f871e5..f4d554ea0c93 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -437,7 +437,7 @@ struct qeth_qdio_out_buffer { unsigned int frames; unsigned int bytes; struct sk_buff_head skb_list; - int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER]; + DECLARE_BITMAP(from_kmem_cache, QDIO_MAX_ELEMENTS_PER_BUFFER); struct list_head list_entry; struct qaob *aob; diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 0ad175d54c13..62f88ccbd03f 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -1347,9 +1347,8 @@ static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, for (i = 0; i < queue->max_elements; ++i) { void *data = phys_to_virt(buf->buffer->element[i].addr); - if (data && buf->is_header[i]) + if (__test_and_clear_bit(i, buf->from_kmem_cache) && data) kmem_cache_free(qeth_core_header_cache, data); - buf->is_header[i] = 0; } qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements); @@ -1393,7 +1392,7 @@ static void qeth_tx_complete_pending_bufs(struct qeth_card *card, i++) { void *data = phys_to_virt(aob->sba[i]); - if (data && buf->is_header[i]) + if (test_bit(i, buf->from_kmem_cache) && data) kmem_cache_free(qeth_core_header_cache, data); } @@ -4053,7 +4052,7 @@ static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf, /* HW header is allocated from cache: */ if ((void *)hdr != skb->data) - buf->is_header[element] = 1; + __set_bit(element, buf->from_kmem_cache); /* HW header was pushed and is contiguous with linear part: */ else if (length > 0 && !PAGE_ALIGNED(data) && (data == (char *)hdr + hd_len)) |