iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

treewide: kzalloc_node() -> kcalloc_node()

Browse Source 
The kzalloc_node() function has a 2-factor argument form, kcalloc_node(). This
patch replaces cases of:

        kzalloc_node(a * b, gfp, node)

with:
        kcalloc_node(a * b, gfp, node)

as well as handling cases of:

        kzalloc_node(a * b * c, gfp, node)

with:

        kzalloc_node(array3_size(a, b, c), gfp, node)

as it's slightly less ugly than:

        kcalloc_node(array_size(a, b), c, gfp, node)

This does, however, attempt to ignore constant size factors like:

        kzalloc_node(4 * 1024, gfp, node)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kzalloc_node(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kzalloc_node(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kzalloc_node(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kzalloc_node
+ kcalloc_node
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kzalloc_node(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc_node(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc_node(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc_node(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kzalloc_node(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc_node(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc_node(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kzalloc_node(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kzalloc_node(C1 * C2 * C3, ...)
|
  kzalloc_node(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc_node(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc_node(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc_node(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kzalloc_node(sizeof(THING) * C2, ...)
|
  kzalloc_node(sizeof(TYPE) * C2, ...)
|
  kzalloc_node(C1 * C2 * C3, ...)
|
  kzalloc_node(C1 * C2, ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook 2018-06-12 14:04:20 -07:00
parent 6396bb2215
commit 590b5b7d86
15 changed files with 35 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
block/blk-mq.c
View File

@ -1903,7 +1903,7 @@ struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set,
if (!tags)
return NULL;
tags->rqs = kzalloc_node(nr_tags * sizeof(struct request *),
tags->rqs = kcalloc_node(nr_tags, sizeof(struct request *),
GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
node);
if (!tags->rqs) {
@ -1911,7 +1911,7 @@ struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set,
return NULL;
}
tags->static_rqs = kzalloc_node(nr_tags * sizeof(struct request *),
tags->static_rqs = kcalloc_node(nr_tags, sizeof(struct request *),
GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
node);
if (!tags->static_rqs) {
@ -2522,7 +2522,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
/* init q->mq_kobj and sw queues' kobjects */
blk_mq_sysfs_init(q);
q->queue_hw_ctx = kzalloc_node(nr_cpu_ids * sizeof(*(q->queue_hw_ctx)),
q->queue_hw_ctx = kcalloc_node(nr_cpu_ids, sizeof(*(q->queue_hw_ctx)),
GFP_KERNEL, set->numa_node);
if (!q->queue_hw_ctx)
goto err_percpu;
@ -2741,13 +2741,13 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set)
if (set->nr_hw_queues > nr_cpu_ids)
set->nr_hw_queues = nr_cpu_ids;
set->tags = kzalloc_node(nr_cpu_ids * sizeof(struct blk_mq_tags *),
set->tags = kcalloc_node(nr_cpu_ids, sizeof(struct blk_mq_tags *),
GFP_KERNEL, set->numa_node);
if (!set->tags)
return -ENOMEM;
ret = -ENOMEM;
set->mq_map = kzalloc_node(sizeof(*set->mq_map) * nr_cpu_ids,
set->mq_map = kcalloc_node(nr_cpu_ids, sizeof(*set->mq_map),
GFP_KERNEL, set->numa_node);
if (!set->mq_map)
goto out_free_tags;

2
drivers/crypto/cavium/nitrox/nitrox_isr.c
View File

@ -254,7 +254,7 @@ static int nitrox_enable_msix(struct nitrox_device *ndev)
* Entry 192: NPS_CORE_INT_ACTIVE
*/
nr_entries = (ndev->nr_queues * NR_RING_VECTORS) + 1;
entries = kzalloc_node(nr_entries * sizeof(struct msix_entry),
entries = kcalloc_node(nr_entries, sizeof(struct msix_entry),
GFP_KERNEL, ndev->node);
if (!entries)
return -ENOMEM;

2
drivers/crypto/qat/qat_common/adf_isr.c
View File

@ -238,7 +238,7 @@ static int adf_isr_alloc_msix_entry_table(struct adf_accel_dev *accel_dev)
if (!accel_dev->pf.vf_info)
msix_num_entries += hw_data->num_banks;
entries = kzalloc_node(msix_num_entries * sizeof(*entries),
entries = kcalloc_node(msix_num_entries, sizeof(*entries),
GFP_KERNEL, dev_to_node(&GET_DEV(accel_dev)));
if (!entries)
return -ENOMEM;

2
drivers/crypto/virtio/virtio_crypto_algs.c
View File

@ -371,7 +371,7 @@ __virtio_crypto_ablkcipher_do_req(struct virtio_crypto_sym_request *vc_sym_req,
/* Why 3? outhdr + iv + inhdr */
sg_total = src_nents + dst_nents + 3;
sgs = kzalloc_node(sg_total * sizeof(*sgs), GFP_ATOMIC,
sgs = kcalloc_node(sg_total, sizeof(*sgs), GFP_ATOMIC,
dev_to_node(&vcrypto->vdev->dev));
if (!sgs)
return -ENOMEM;

2
drivers/infiniband/hw/qib/qib_init.c
View File

@ -1673,7 +1673,7 @@ int qib_setup_eagerbufs(struct qib_ctxtdata *rcd)
size = rcd->rcvegrbuf_size;
if (!rcd->rcvegrbuf) {
rcd->rcvegrbuf =
kzalloc_node(chunk * sizeof(rcd->rcvegrbuf[0]),
kcalloc_node(chunk, sizeof(rcd->rcvegrbuf[0]),
GFP_KERNEL, rcd->node_id);
if (!rcd->rcvegrbuf)
goto bail;

5
drivers/infiniband/sw/rdmavt/qp.c
View File

@ -836,9 +836,8 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
RCU_INIT_POINTER(qp->next, NULL);
if (init_attr->qp_type == IB_QPT_RC) {
qp->s_ack_queue =
kzalloc_node(
sizeof(*qp->s_ack_queue) *
rvt_max_atomic(rdi),
kcalloc_node(rvt_max_atomic(rdi),
sizeof(*qp->s_ack_queue),
GFP_KERNEL,
rdi->dparms.node);
if (!qp->s_ack_queue)

2
drivers/net/ethernet/chelsio/cxgb4/sge.c
View File

@ -699,7 +699,7 @@ static void *alloc_ring(struct device *dev, size_t nelem, size_t elem_size,
if (!p)
return NULL;
if (sw_size) {
s = kzalloc_node(nelem * sw_size, GFP_KERNEL, node);
s = kcalloc_node(sw_size, nelem, GFP_KERNEL, node);
if (!s) {
dma_free_coherent(dev, len, p, *phys);

10
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -352,7 +352,7 @@ static int mlx5e_rq_alloc_mpwqe_info(struct mlx5e_rq *rq,
{
int wq_sz = mlx5_wq_ll_get_size(&rq->mpwqe.wq);
rq->mpwqe.info = kzalloc_node(wq_sz * sizeof(*rq->mpwqe.info),
rq->mpwqe.info = kcalloc_node(wq_sz, sizeof(*rq->mpwqe.info),
GFP_KERNEL, cpu_to_node(c->cpu));
if (!rq->mpwqe.info)
return -ENOMEM;
@ -972,7 +972,7 @@ static int mlx5e_alloc_xdpsq_db(struct mlx5e_xdpsq *sq, int numa)
{
int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
sq->db.di = kzalloc_node(sizeof(*sq->db.di) * wq_sz,
sq->db.di = kcalloc_node(wq_sz, sizeof(*sq->db.di),
GFP_KERNEL, numa);
if (!sq->db.di) {
mlx5e_free_xdpsq_db(sq);
@ -1031,7 +1031,7 @@ static int mlx5e_alloc_icosq_db(struct mlx5e_icosq *sq, int numa)
{
u8 wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
sq->db.ico_wqe = kzalloc_node(sizeof(*sq->db.ico_wqe) * wq_sz,
sq->db.ico_wqe = kcalloc_node(wq_sz, sizeof(*sq->db.ico_wqe),
GFP_KERNEL, numa);
if (!sq->db.ico_wqe)
return -ENOMEM;
@ -1086,9 +1086,9 @@ static int mlx5e_alloc_txqsq_db(struct mlx5e_txqsq *sq, int numa)
int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
int df_sz = wq_sz * MLX5_SEND_WQEBB_NUM_DS;
sq->db.dma_fifo = kzalloc_node(df_sz * sizeof(*sq->db.dma_fifo),
sq->db.dma_fifo = kcalloc_node(df_sz, sizeof(*sq->db.dma_fifo),
GFP_KERNEL, numa);
sq->db.wqe_info = kzalloc_node(wq_sz * sizeof(*sq->db.wqe_info),
sq->db.wqe_info = kcalloc_node(wq_sz, sizeof(*sq->db.wqe_info),
GFP_KERNEL, numa);
if (!sq->db.dma_fifo || !sq->db.wqe_info) {
mlx5e_free_txqsq_db(sq);

4
drivers/ntb/hw/amd/ntb_hw_amd.c
View File

@ -592,12 +592,12 @@ static int ndev_init_isr(struct amd_ntb_dev *ndev,
ndev->db_mask = ndev->db_valid_mask;
/* Try to set up msix irq */
ndev->vec = kzalloc_node(msix_max * sizeof(*ndev->vec),
ndev->vec = kcalloc_node(msix_max, sizeof(*ndev->vec),
GFP_KERNEL, node);
if (!ndev->vec)
goto err_msix_vec_alloc;
ndev->msix = kzalloc_node(msix_max * sizeof(*ndev->msix),
ndev->msix = kcalloc_node(msix_max, sizeof(*ndev->msix),
GFP_KERNEL, node);
if (!ndev->msix)
goto err_msix_alloc;

4
drivers/ntb/hw/intel/ntb_hw_intel.c
View File

@ -448,12 +448,12 @@ static int ndev_init_isr(struct intel_ntb_dev *ndev,
/* Try to set up msix irq */
ndev->vec = kzalloc_node(msix_max * sizeof(*ndev->vec),
ndev->vec = kcalloc_node(msix_max, sizeof(*ndev->vec),
GFP_KERNEL, node);
if (!ndev->vec)
goto err_msix_vec_alloc;
ndev->msix = kzalloc_node(msix_max * sizeof(*ndev->msix),
ndev->msix = kcalloc_node(msix_max, sizeof(*ndev->msix),
GFP_KERNEL, node);
if (!ndev->msix)
goto err_msix_alloc;

4
drivers/ntb/ntb_transport.c
View File

@ -1102,7 +1102,7 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev)
max_mw_count_for_spads = (spad_count - MW0_SZ_HIGH) / 2;
nt->mw_count = min(mw_count, max_mw_count_for_spads);
nt->mw_vec = kzalloc_node(mw_count * sizeof(*nt->mw_vec),
nt->mw_vec = kcalloc_node(mw_count, sizeof(*nt->mw_vec),
GFP_KERNEL, node);
if (!nt->mw_vec) {
rc = -ENOMEM;
@ -1143,7 +1143,7 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev)
nt->qp_bitmap = qp_bitmap;
nt->qp_bitmap_free = qp_bitmap;
nt->qp_vec = kzalloc_node(qp_count * sizeof(*nt->qp_vec),
nt->qp_vec = kcalloc_node(qp_count, sizeof(*nt->qp_vec),
GFP_KERNEL, node);
if (!nt->qp_vec) {
rc = -ENOMEM;

2
drivers/scsi/sd_zbc.c
View File

@ -494,7 +494,7 @@ out_free:
static inline unsigned long *
sd_zbc_alloc_zone_bitmap(u32 nr_zones, int numa_node)
{
return kzalloc_node(BITS_TO_LONGS(nr_zones) * sizeof(unsigned long),
return kcalloc_node(BITS_TO_LONGS(nr_zones), sizeof(unsigned long),
GFP_KERNEL, numa_node);
}

2
drivers/usb/host/xhci-mem.c
View File

@ -2274,7 +2274,7 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags)
xhci->hw_ports[i].hw_portnum = i;
}
xhci->rh_bw = kzalloc_node(sizeof(*xhci->rh_bw)*num_ports, flags,
xhci->rh_bw = kcalloc_node(num_ports, sizeof(*xhci->rh_bw), flags,
dev_to_node(dev));
if (!xhci->rh_bw)
return -ENOMEM;

3
kernel/events/ring_buffer.c
View File

@ -614,7 +614,8 @@ int rb_alloc_aux(struct ring_buffer *rb, struct perf_event *event,
}
}
rb->aux_pages = kzalloc_node(nr_pages * sizeof(void *), GFP_KERNEL, node);
rb->aux_pages = kcalloc_node(nr_pages, sizeof(void *), GFP_KERNEL,
node);
if (!rb->aux_pages)
return -ENOMEM;

2
lib/sbitmap.c
View File

@ -52,7 +52,7 @@ int sbitmap_init_node(struct sbitmap *sb, unsigned int depth, int shift,
return 0;
}
sb->map = kzalloc_node(sb->map_nr * sizeof(*sb->map), flags, node);
sb->map = kcalloc_node(sb->map_nr, sizeof(*sb->map), flags, node);
if (!sb->map)
return -ENOMEM;