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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>
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015, 2017, 2022 Linaro Limited
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*/
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#include <linux/device.h>
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#include <linux/dma-buf.h>
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#include <linux/genalloc.h>
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#include <linux/slab.h>
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#include <linux/tee_core.h>
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#include "tee_private.h"
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static int pool_op_gen_alloc(struct tee_shm_pool *pool, struct tee_shm *shm,
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size_t size, size_t align)
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{
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unsigned long va;
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struct gen_pool *genpool = pool->private_data;
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size_t a = max_t(size_t, align, BIT(genpool->min_alloc_order));
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struct genpool_data_align data = { .align = a };
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size_t s = roundup(size, a);
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va = gen_pool_alloc_algo(genpool, s, gen_pool_first_fit_align, &data);
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if (!va)
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return -ENOMEM;
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memset((void *)va, 0, s);
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shm->kaddr = (void *)va;
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shm->paddr = gen_pool_virt_to_phys(genpool, va);
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shm->size = s;
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/*
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* This is from a static shared memory pool so no need to register
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* each chunk, and no need to unregister later either.
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*/
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shm->flags &= ~TEE_SHM_DYNAMIC;
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return 0;
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}
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static void pool_op_gen_free(struct tee_shm_pool *pool, struct tee_shm *shm)
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{
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gen_pool_free(pool->private_data, (unsigned long)shm->kaddr,
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shm->size);
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shm->kaddr = NULL;
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}
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static void pool_op_gen_destroy_pool(struct tee_shm_pool *pool)
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{
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gen_pool_destroy(pool->private_data);
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kfree(pool);
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}
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static const struct tee_shm_pool_ops pool_ops_generic = {
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.alloc = pool_op_gen_alloc,
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.free = pool_op_gen_free,
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.destroy_pool = pool_op_gen_destroy_pool,
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};
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struct tee_shm_pool *tee_shm_pool_alloc_res_mem(unsigned long vaddr,
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phys_addr_t paddr, size_t size,
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int min_alloc_order)
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{
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const size_t page_mask = PAGE_SIZE - 1;
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struct tee_shm_pool *pool;
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int rc;
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/* Start and end must be page aligned */
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if (vaddr & page_mask || paddr & page_mask || size & page_mask)
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return ERR_PTR(-EINVAL);
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pool = kzalloc_obj(*pool);
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if (!pool)
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return ERR_PTR(-ENOMEM);
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pool->private_data = gen_pool_create(min_alloc_order, -1);
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if (!pool->private_data) {
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rc = -ENOMEM;
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goto err;
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}
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rc = gen_pool_add_virt(pool->private_data, vaddr, paddr, size, -1);
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if (rc) {
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gen_pool_destroy(pool->private_data);
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goto err;
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}
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pool->ops = &pool_ops_generic;
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return pool;
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err:
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kfree(pool);
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return ERR_PTR(rc);
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}
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EXPORT_SYMBOL_GPL(tee_shm_pool_alloc_res_mem);
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