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Relax allocations requirements

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CAS does not need atomic alocations virtually anywhere. GFP_NOIO
should be sufficient in IO path. When allocation buffers during
module initialization use GFP_KERNEL.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski
2019-10-18 19:16:20 -04:00
parent f9f00df576
commit 9b8fdde201
6 changed files with 15 additions and 16 deletions
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14
modules/cas_cache/ocf_env.c
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@@ -34,7 +34,7 @@ static inline size_t env_allocator_align(size_t size)
}
struct _env_allocator_item {
uint32_t flags;
uint32_t from_rpool;
uint32_t cpu;
char data[];
};
@@ -49,7 +49,7 @@ void *env_allocator_new(env_allocator *allocator)
memset(item->data, 0, allocator->item_size -
sizeof(struct _env_allocator_item));
} else {
item = kmem_cache_zalloc(allocator->kmem_cache, GFP_ATOMIC);
item = kmem_cache_zalloc(allocator->kmem_cache, GFP_NOIO);
}
if (item) {
@@ -66,11 +66,10 @@ void *env_allocator_new_rpool(void *allocator_ctx, int cpu)
env_allocator *allocator = (env_allocator*) allocator_ctx;
struct _env_allocator_item *item;
item = kmem_cache_zalloc(allocator->kmem_cache, GFP_NOIO |
__GFP_NORETRY);
item = kmem_cache_zalloc(allocator->kmem_cache, GFP_KERNEL);
if (item) {
item->flags = (GFP_NOIO | __GFP_NORETRY);
item->from_rpool = 1;
item->cpu = cpu;
}
@@ -176,9 +175,10 @@ void env_allocator_del(env_allocator *allocator, void *obj)
atomic_dec(&allocator->count);
if (item->flags == (GFP_NOIO | __GFP_NORETRY) &&
!cas_rpool_try_put(allocator->rpool, item, item->cpu))
if (item->from_rpool && !cas_rpool_try_put(allocator->rpool, item,
item->cpu)) {
return;
}
kmem_cache_free(allocator->kmem_cache, item);
}