/*
* Validate object alignment cache behavior for caches
*/
static int
splat_kmem_test7(struct file *file, void *arg)
{
char *name = SPLAT_KMEM_TEST7_NAME;
int max_size = (SPL_KMEM_CACHE_MAX_SIZE * 1024 * 1024) / 2;
int i, rc;
for (i = SPL_KMEM_CACHE_ALIGN; i <= PAGE_SIZE; i *= 2) {
uint32_t size;
get_random_bytes((void *)&size, sizeof (uint32_t));
size = MAX(size % (max_size + 1), 32);
rc = splat_kmem_cache_test(file, arg, name, size, i, 0);
if (rc)
return rc;
rc = splat_kmem_cache_test(file, arg, name, size, i,
KMC_OFFSLAB);
if (rc)
return rc;
}
return rc;
}
/* Validate large object cache behavior for dynamic/kmem/vmem caches */
static int
splat_kmem_test6(struct file *file, void *arg)
{
char *name = SPLAT_KMEM_TEST6_NAME;
int rc;
rc = splat_kmem_cache_test(file, arg, name, 256*1024, 0, 0);
if (rc)
return rc;
rc = splat_kmem_cache_test(file, arg, name, 64*1024, 0, KMC_KMEM);
if (rc)
return rc;
return splat_kmem_cache_test(file, arg, name, 1024*1024, 0, KMC_VMEM);
}
/*
* Validate object alignment cache behavior for caches
*/
static int
splat_kmem_test7(struct file *file, void *arg)
{
char *name = SPLAT_KMEM_TEST7_NAME;
int i, rc;
for (i = SPL_KMEM_CACHE_ALIGN; i <= PAGE_SIZE; i *= 2) {
rc = splat_kmem_cache_test(file, arg, name, 157, i, 0);
if (rc)
return rc;
rc = splat_kmem_cache_test(file, arg, name, 157, i,
KMC_OFFSLAB);
if (rc)
return rc;
}
return rc;
}
/*
* Validate large object cache behavior for dynamic/kmem/vmem caches
*/
static int
splat_kmem_test6(struct file *file, void *arg)
{
char *name = SPLAT_KMEM_TEST6_NAME;
int rc;
/* On slab (default + kmem + vmem) */
rc = splat_kmem_cache_test(file, arg, name, 256*1024, 0, 0);
if (rc)
return rc;
rc = splat_kmem_cache_test(file, arg, name, 64*1024, 0, KMC_KMEM);
if (rc)
return rc;
rc = splat_kmem_cache_test(file, arg, name, 1024*1024, 0, KMC_VMEM);
if (rc)
return rc;
/* Off slab (default + kmem + vmem) */
rc = splat_kmem_cache_test(file, arg, name, 256*1024, 0, KMC_OFFSLAB);
if (rc)
return rc;
rc = splat_kmem_cache_test(file, arg, name, 64*1024, 0,
KMC_KMEM | KMC_OFFSLAB);
if (rc)
return rc;
rc = splat_kmem_cache_test(file, arg, name, 1024*1024, 0,
KMC_VMEM | KMC_OFFSLAB);
return rc;
}
/*
* Validate large object cache behavior for dynamic/kmem/vmem caches
*/
static int
splat_kmem_test6(struct file *file, void *arg)
{
char *name = SPLAT_KMEM_TEST6_NAME;
int i, max_size, rc = 0;
/* Randomly pick large object sizes and alignments. */
for (i = 0; i < 100; i++) {
int size, align, flags = 0;
uint32_t rnd;
/* Evenly distribute tests over all value cache types */
get_random_bytes((void *)&rnd, sizeof (uint32_t));
switch (rnd & 0x03) {
default:
case 0x00:
flags = 0;
max_size = (SPL_KMEM_CACHE_MAX_SIZE * 1024 * 1024) / 2;
break;
case 0x01:
flags = KMC_KMEM;
max_size = (SPL_MAX_ORDER_NR_PAGES - 2) * PAGE_SIZE;
break;
case 0x02:
flags = KMC_VMEM;
max_size = (SPL_KMEM_CACHE_MAX_SIZE * 1024 * 1024) / 2;
break;
case 0x03:
flags = KMC_SLAB;
max_size = SPL_MAX_KMEM_ORDER_NR_PAGES * PAGE_SIZE;
break;
}
/* The following flags are set with a 1/10 chance */
flags |= ((((rnd >> 8) % 10) == 0) ? KMC_OFFSLAB : 0);
flags |= ((((rnd >> 16) % 10) == 0) ? KMC_NOEMERGENCY : 0);
/* PAGE_SIZE - max_size */
get_random_bytes((void *)&rnd, sizeof (uint32_t));
size = MAX(rnd % (max_size + 1), PAGE_SIZE),
/* 2^N where (3 <= N <= PAGE_SHIFT) */
get_random_bytes((void *)&rnd, sizeof (uint32_t));
align = (1 << MAX(3, rnd % (PAGE_SHIFT + 1)));
rc = splat_kmem_cache_test(file, arg, name, size, align, flags);
if (rc)
return (rc);
}
return (rc);
}