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kernel: memslab: Add maximum mem_slab utilization trace

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Add new function to mem_slab API that enables user
to get maximum number of slabs used so far.

Signed-off-by: Kamil Lazowski <Kamil.Lazowski@nordicsemi.no>
This commit is contained in:
Kamil Lazowski 2020-09-11 14:27:55 +02:00 • committed by Anas Nashif
commit 104f100749
4 changed files with 40 additions and 1 deletions
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23
include/kernel.h
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@ -4260,6 +4260,9 @@ struct k_mem_slab {
char *buffer;
char *free_list;
uint32_t num_used;
#ifdef CONFIG_MEM_SLAB_TRACE_MAX_UTILIZATION
uint32_t max_used;
#endif
_OBJECT_TRACING_NEXT_PTR(k_mem_slab)
_OBJECT_TRACING_LINKED_FLAG
@ -4388,6 +4391,26 @@ static inline uint32_t k_mem_slab_num_used_get(struct k_mem_slab *slab)
return slab->num_used;
}
/**
* @brief Get the number of maximum used blocks so far in a memory slab.
*
* This routine gets the maximum number of memory blocks that were
* allocated in @a slab.
*
* @param slab Address of the memory slab.
*
* @return Maximum number of allocated memory blocks.
*/
static inline uint32_t k_mem_slab_max_used_get(struct k_mem_slab *slab)
{
#ifdef CONFIG_MEM_SLAB_TRACE_MAX_UTILIZATION
return slab->max_used;
#else
ARG_UNUSED(slab);
return 0;
#endif
}
/**
* @brief Get the number of unused blocks in a memory slab.
*