From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
IDR needs more functionality from the kernel: kmalloc()/kfree(), and xchg().
Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
---
tools/testing/radix-tree/linux.c | 15 +++++++++++++++
tools/testing/radix-tree/linux/kernel.h | 3 +++
tools/testing/radix-tree/linux/slab.h | 3 +++
3 files changed, 21 insertions(+)
diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c
index 1f32a16..ff0452e 100644
--- a/tools/testing/radix-tree/linux.c
+++ b/tools/testing/radix-tree/linux.c
@@ -54,6 +54,21 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp)
free(objp);
}
+void *kmalloc(size_t size, gfp_t gfp)
+{
+ void *ret = malloc(size);
+ uatomic_inc(&nr_allocated);
+ return ret;
+}
+
+void kfree(void *p)
+{
+ if (!p)
+ return;
+ uatomic_dec(&nr_allocated);
+ free(p);
+}
+
struct kmem_cache *
kmem_cache_create(const char *name, size_t size, size_t offset,
unsigned long flags, void (*ctor)(void *))
diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/radix-tree/linux/kernel.h
index 23e77f5..9b43b49 100644
--- a/tools/testing/radix-tree/linux/kernel.h
+++ b/tools/testing/radix-tree/linux/kernel.h
@@ -8,6 +8,7 @@
#include <limits.h>
#include "../../include/linux/compiler.h"
+#include "../../include/linux/err.h"
#include "../../../include/linux/kconfig.h"
#ifdef BENCHMARK
@@ -58,4 +59,6 @@ static inline int in_interrupt(void)
#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
#define round_down(x, y) ((x) & ~__round_mask(x, y))
+#define xchg(ptr, x) uatomic_xchg(ptr, x)
+
#endif /* _KERNEL_H */
diff --git a/tools/testing/radix-tree/linux/slab.h b/tools/testing/radix-tree/linux/slab.h
index 452e2bf..446639f 100644
--- a/tools/testing/radix-tree/linux/slab.h
+++ b/tools/testing/radix-tree/linux/slab.h
@@ -7,6 +7,9 @@
#define SLAB_PANIC 2
#define SLAB_RECLAIM_ACCOUNT 0x00020000UL /* Objects are reclaimable */
+void *kmalloc(size_t size, gfp_t);
+void kfree(void *);
+
struct kmem_cache {
int size;
void (*ctor)(void *);
--
2.10.2
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