From: Liam Howlett <liam.howlett@oracle.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
Matthew Wilcox <willy@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Subject: [PATCH v2 3/4] radix tree test suite: Add allocation counts and size to kmem_cache
Date: Thu, 3 Jun 2021 18:47:46 +0000 [thread overview]
Message-ID: <20210603184729.3893455-4-Liam.Howlett@Oracle.com> (raw)
In-Reply-To: <20210603184729.3893455-1-Liam.Howlett@Oracle.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@Oracle.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
prev parent reply other threads:[~2021-06-03 18:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 18:47 [PATCH v2 0/4] radix tree test framework additions Liam Howlett
2021-06-03 18:47 ` [PATCH v2 1/4] radix tree test suite: Add pr_err define Liam Howlett
2021-06-03 18:47 ` [PATCH v2 2/4] radix tree test suite: Add kmem_cache_set_non_kernel() Liam Howlett
2021-06-03 18:47 ` [PATCH v2 4/4] radix tree test suite: Add support for slab bulk APIs Liam Howlett
2021-06-03 18:47 ` Liam Howlett [this message]
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