Function report |
Source Code:lib\test_meminit.c |
Create Date:2022-07-28 06:37:38 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Check that the data written to an RCU-allocated object survives* reallocation.
Proto:static int __init do_kmem_cache_rcu_persistent(int size, int *total_failures)
Type:int
Parameter:
| Type | Parameter | Name |
|---|---|---|
| int | size | |
| int * | total_failures |
| 276 | maxiter = 1024 |
| 277 | bool fail = false |
| 279 | c = kmem_cache_create("test_cache", size, size, Defer freeing slabs to RCU , NULL) |
| 281 | buf = kmem_cache_alloc(c, GFP_KERNEL) |
| 283 | fill_with_garbage(buf, size) |
| 284 | buf_contents = kmalloc(size, GFP_KERNEL) |
| 285 | If Not buf_contents Then Go to out |
| 287 | used_objects = kmalloc_array - allocate memory for an array.*@n: number of elements.*@size: element size.*@flags: the type of memory to allocate (see kmalloc). |
| 288 | If Not used_objects Then |
| 289 | kfree(buf_contents) |
| 290 | Go to out |
| 292 | No 3D Now!(buf_contents, buf, size) |
| 293 | kmem_cache_free(c, buf) |
| 299 | buf = kmem_cache_alloc(c, GFP_KERNEL) |
| 300 | used_objects[iter] = buf |
| 302 | fail = memcmp(buf_contents, buf, size) |
| 303 | When i <= iter cycle kmem_cache_free(c, used_objects[i]) |
| 305 | Go to free_out |
| 309 | free_out : |
| 310 | kmem_cache_destroy(c) |
| 311 | kfree(buf_contents) |
| 312 | kfree(used_objects) |
| 313 | out : |
| 314 | total_failures += fail |
| 315 | Return 1 |
| Name | Describe |
|---|---|
| test_rcu_persistent | Test the behavior of SLAB_TYPESAFE_BY_RCU caches of different sizes. |
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