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Subject[PATCH v2 2/4] tools headers UAPI: add kmalloc/vmalloc related interface
Date
Implement the kmalloc/vmalloc related interface based on
malloc interface in user space.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
---
tools/include/linux/gfp.h | 2 ++
tools/include/linux/slab.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 48 insertions(+)
create mode 100644 tools/include/linux/slab.h

diff --git a/tools/include/linux/gfp.h b/tools/include/linux/gfp.h
index 2203075..a660ab9 100644
--- a/tools/include/linux/gfp.h
+++ b/tools/include/linux/gfp.h
@@ -1,4 +1,6 @@
#ifndef _TOOLS_INCLUDE_LINUX_GFP_H
#define _TOOLS_INCLUDE_LINUX_GFP_H

+#define __GFP_ZERO 0x100u
+
#endif /* _TOOLS_INCLUDE_LINUX_GFP_H */
diff --git a/tools/include/linux/slab.h b/tools/include/linux/slab.h
new file mode 100644
index 0000000..f0b7da6
--- /dev/null
+++ b/tools/include/linux/slab.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __TOOLS_LINUX_SLAB_H
+#define __TOOLS_LINUX_SLAB_H
+
+#include <linux/gfp.h>
+#include <linux/cache.h>
+
+static inline void *kmalloc(size_t size, gfp_t gfp)
+{
+ void *p;
+
+ p = memalign(SMP_CACHE_BYTES, size);
+ if (!p)
+ return p;
+
+ if (gfp & __GFP_ZERO)
+ memset(p, 0, size);
+
+ return p;
+}
+
+static inline void *kzalloc(size_t size, gfp_t flags)
+{
+ return kmalloc(size, flags | __GFP_ZERO);
+}
+
+static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
+{
+ return kmalloc(n * size, flags);
+}
+
+static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
+{
+ return kmalloc_array(n, size, flags | __GFP_ZERO);
+}
+
+static inline void kfree(void *p)
+{
+ free(p);
+}
+
+#define kvmalloc_array kmalloc_array
+#define kvfree kfree
+#define KMALLOC_MAX_SIZE SIZE_MAX
+
+#endif
--
2.7.4
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