Commit 000a4493 authored by Liam R. Howlett's avatar Liam R. Howlett Committed by Andrew Morton
Browse files

radix tree test suite: add allocation counts and size to kmem_cache 

Add functions to get the number of allocations, and total allocations from
a kmem_cache.  Also add a function to get the allocated size and a way to
zero the total allocations.

Link: https://lkml.kernel.org/r/20220906194824.2110408-5-Liam.Howlett@oracle.com


Signed-off-by: default avatarLiam R. Howlett <Liam.Howlett@Oracle.com>
Tested-by: default avatarYu Zhao <yuzhao@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent e73cb368

tools/testing/radix-tree/linux.c

+27 −1
Original line number Diff line number Diff line
@@ -24,6 +24,8 @@ struct kmem_cache { 
	void *objs;

	void (*ctor)(void *);

	unsigned int non_kernel;

	unsigned long nr_allocated;

	unsigned long nr_tallocated;

};



void kmem_cache_set_non_kernel(struct kmem_cache *cachep, unsigned int val)
@@ -31,9 +33,28 @@ void kmem_cache_set_non_kernel(struct kmem_cache *cachep, unsigned int val) 
	cachep->non_kernel = val;

}



unsigned long kmem_cache_get_alloc(struct kmem_cache *cachep)

{

	return cachep->size * cachep->nr_allocated;

}



unsigned long kmem_cache_nr_allocated(struct kmem_cache *cachep)

{

	return cachep->nr_allocated;

}



unsigned long kmem_cache_nr_tallocated(struct kmem_cache *cachep)

{

	return cachep->nr_tallocated;

}



void kmem_cache_zero_nr_tallocated(struct kmem_cache *cachep)

{

	cachep->nr_tallocated = 0;

}



void *kmem_cache_alloc_lru(struct kmem_cache *cachep, struct list_lru *lru,

		int gfp)



{

	void *p;
@@ -64,7 +85,9 @@ void *kmem_cache_alloc_lru(struct kmem_cache *cachep, struct list_lru *lru, 
			memset(p, 0, cachep->size);

	}



	uatomic_inc(&cachep->nr_allocated);

	uatomic_inc(&nr_allocated);

	uatomic_inc(&cachep->nr_tallocated);

	if (kmalloc_verbose)

		printf("Allocating %p from slab\n", p);

	return p;
@@ -74,6 +97,7 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp) 
{

	assert(objp);

	uatomic_dec(&nr_allocated);

	uatomic_dec(&cachep->nr_allocated);

	if (kmalloc_verbose)

		printf("Freeing %p to slab\n", objp);

	pthread_mutex_lock(&cachep->lock);
@@ -99,6 +123,8 @@ kmem_cache_create(const char *name, unsigned int size, unsigned int align, 
	ret->size = size;

	ret->align = align;

	ret->nr_objs = 0;

	ret->nr_allocated = 0;

	ret->nr_tallocated = 0;

	ret->objs = NULL;

	ret->ctor = ctor;

	ret->non_kernel = 0;