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Integrate kmemleak into CAS

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Kmemleak is a tool which allows to detect memory leaks in kernel. It requires
`CONFIG_DEBUG_KMEMLEAK` to be enabled during kernel compilation. Otherwise all
the kmemleak_* functions are NOPs.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
This commit is contained in:
Michal Mielewczyk
2022-08-12 10:25:55 +02:00
parent 90106d545a
commit 38bef1f7fe
3 changed files with 23 additions and 3 deletions
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7
modules/cas_cache/ocf_env.c
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@@ -1,10 +1,11 @@
/*
* Copyright(c) 2012-2021 Intel Corporation
* Copyright(c) 2012-2022 Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "cas_cache.h"
#include "utils/utils_rpool.h"
#include <linux/kmemleak.h>
/* *** ALLOCATOR *** */
@@ -77,6 +78,9 @@ static void *env_allocator_new_rpool(void *allocator_ctx, int cpu)
item->from_rpool = 1;
item->cpu = cpu;
}
/* As it isn't an actuall allocation but only a rpool preparation
kmemleak shouldn't track the allocated memory yet. */
kmemleak_free(item);
return item;
}
@@ -88,6 +92,7 @@ static void env_allocator_del_rpool(void *allocator_ctx, void *_item)
BUG_ON(item->used);
kmemleak_alloc(item, allocator->item_size, 1, GFP_NOIO);
kmem_cache_free(allocator->kmem_cache, item);
}