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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* XDP user-space ring structure
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* Copyright(c) 2018 Intel Corporation.
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*/
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#include <linux/log2.h>
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#include <linux/slab.h>
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#include <linux/overflow.h>
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#include <linux/vmalloc.h>
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#include <net/xdp_sock_drv.h>
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#include "xsk_queue.h"
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static size_t xskq_get_ring_size(struct xsk_queue *q, bool umem_queue)
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{
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struct xdp_umem_ring *umem_ring;
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struct xdp_rxtx_ring *rxtx_ring;
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if (umem_queue)
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return struct_size(umem_ring, desc, q->nentries);
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return struct_size(rxtx_ring, desc, q->nentries);
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}
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struct xsk_queue *xskq_create(u32 nentries, bool umem_queue)
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{
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struct xsk_queue *q;
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size_t size;
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q = kzalloc_obj(*q);
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if (!q)
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return NULL;
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q->nentries = nentries;
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q->ring_mask = nentries - 1;
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size = xskq_get_ring_size(q, umem_queue);
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/* size which is overflowing or close to SIZE_MAX will become 0 in
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* PAGE_ALIGN(), checking SIZE_MAX is enough due to the previous
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* is_power_of_2(), the rest will be handled by vmalloc_user()
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*/
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if (unlikely(size == SIZE_MAX)) {
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kfree(q);
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return NULL;
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}
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size = PAGE_ALIGN(size);
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q->ring = vmalloc_user(size);
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if (!q->ring) {
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kfree(q);
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return NULL;
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}
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q->ring_vmalloc_size = size;
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return q;
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}
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void xskq_destroy(struct xsk_queue *q)
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{
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if (!q)
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return;
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vfree(q->ring);
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kfree(q);
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}
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