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Date: Tue, 5 Oct 2021 01:30:26 +0000 From: Liam Howlett <liam.howlett@...cle.com> To: "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, David Hildenbrand <david@...hat.com>, Douglas Gilbert <dgilbert@...erlog.com> CC: Song Liu <songliubraving@...com>, Davidlohr Bueso <dave@...olabs.net>, "Paul E . McKenney" <paulmck@...nel.org>, Matthew Wilcox <willy@...radead.org>, David Rientjes <rientjes@...gle.com>, Axel Rasmussen <axelrasmussen@...gle.com>, Suren Baghdasaryan <surenb@...gle.com>, Vlastimil Babka <vbabka@...e.cz>, Rik van Riel <riel@...riel.com>, Peter Zijlstra <peterz@...radead.org> Subject: [PATCH v3 03/66] radix tree test suite: Add allocation counts and size to kmem_cache From: "Liam R. Howlett" <Liam.Howlett@...cle.com> 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. Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com> --- tools/testing/radix-tree/linux.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c index 00ee01a14652..f95e71d65f00 100644 --- a/tools/testing/radix-tree/linux.c +++ b/tools/testing/radix-tree/linux.c @@ -25,6 +25,8 @@ 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) @@ -32,6 +34,26 @@ 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(struct kmem_cache *cachep, int gfp) { void *p; @@ -63,7 +85,9 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, int gfp) 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; @@ -73,6 +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); @@ -124,6 +149,8 @@ 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; -- 2.30.2
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