gpu: nvgpu: Remove linux includes from kmem.h

Remove the Linux includes that are included from <nvgpu/linux/kmem.h>.
These includes leak into the core code and make it easy for Linux
specific functions and APIs to be accidentally called.

The only place that includes the Linux headers is now the Linux API
implementation code.

Change-Id: I2af8153a81408fe3b762c03c9504e41d0309aea9
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1472370
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

drivers/gpu/nvgpu/common/linux/kmem.c

@@ -14,6 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/mm.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/debugfs.h>
@@ -37,6 +38,101 @@
  */
 static atomic_t kmem_cache_id;
 
+void *__nvgpu_big_alloc(struct gk20a *g, size_t size, bool clear)
+{
+	void *p;
+
+	if (size > PAGE_SIZE) {
+		if (clear)
+			p = nvgpu_vzalloc(g, size);
+		else
+			p = nvgpu_vmalloc(g, size);
+	} else {
+		if (clear)
+			p = nvgpu_kzalloc(g, size);
+		else
+			p = nvgpu_kmalloc(g, size);
+	}
+
+	return p;
+}
+
+void nvgpu_big_free(struct gk20a *g, void *p)
+{
+	/*
+	 * This will have to be fixed eventually. Allocs that use
+	 * nvgpu_big_[mz]alloc() will need to remember the size of the alloc
+	 * when freeing.
+	 */
+	if (virt_addr_valid(p))
+		nvgpu_kfree(g, p);
+	else
+		nvgpu_vfree(g, p);
+}
+
+void *__nvgpu_kmalloc(struct gk20a *g, size_t size, unsigned long ip)
+{
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+	return __nvgpu_track_kmalloc(g, size, ip);
+#else
+	return kmalloc(size, GFP_KERNEL);
+#endif
+}
+
+void *__nvgpu_kzalloc(struct gk20a *g, size_t size, unsigned long ip)
+{
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+	return __nvgpu_track_kzalloc(g, size, ip);
+#else
+	return kzalloc(size, GFP_KERNEL);
+#endif
+}
+
+void *__nvgpu_kcalloc(struct gk20a *g, size_t n, size_t size, unsigned long ip)
+{
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+	return __nvgpu_track_kcalloc(g, n, size, ip);
+#else
+	return kcalloc(n, size, GFP_KERNEL);
+#endif
+}
+
+void *__nvgpu_vmalloc(struct gk20a *g, unsigned long size, unsigned long ip)
+{
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+	return __nvgpu_track_vmalloc(g, size, ip);
+#else
+	return vmalloc(size);
+#endif
+}
+
+void *__nvgpu_vzalloc(struct gk20a *g, unsigned long size, unsigned long ip)
+{
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+	return __nvgpu_track_vzalloc(g, size, ip);
+#else
+	return vzalloc(size);
+#endif
+}
+
+void __nvgpu_kfree(struct gk20a *g, void *addr)
+{
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+	__nvgpu_track_kfree(g, addr);
+#else
+	kfree(addr);
+#endif
+}
+
+void __nvgpu_vfree(struct gk20a *g, void *addr)
+{
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+	__nvgpu_track_vfree(g, addr);
+#else
+	vfree(addr);
+#endif
+}
+
 #ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
 
 static void lock_tracker(struct nvgpu_mem_alloc_tracker *tracker)