dde_linux: generalize kmalloc_order() implementation

repos/dde_linux/src/app/wireguard/lx_emul.c

@@ -70,14 +70,6 @@ int __must_check get_random_bytes_arch(void * buf, int nbytes)
 }
 
 
-#include <linux/slab.h>
-
-void * kmalloc_order(size_t size,gfp_t flags,unsigned int order)
-{
-	return kmalloc(size, flags);
-}
-
-
 #include <linux/mm.h>
 
 void * kvmalloc_node(size_t size,gfp_t flags,int node)

repos/dde_linux/src/lib/lx_emul/shadow/mm/slab_common.c

@@ -14,6 +14,7 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <../mm/slab.h>
+#include <../mm/internal.h>
 #include <lx_emul/alloc.h>
 #include <lx_emul/debug.h>
 
@@ -48,3 +49,13 @@ size_t ksize(const void * objp)
 
 	return __ksize(objp);
 }
+
+
+/*
+ * We can use our __kmalloc() implementation here as it supports large
+ * allocations well.
+ */
+void * kmalloc_order(size_t size, gfp_t flags, unsigned int order)
+{
+	return __kmalloc(size, flags);
+}

repos/pc/lib/import/import-pc_lx_emul.mk

@@ -47,7 +47,6 @@ SRC_C   += lx_emul/shadow/fs/sysfs/symlink.c
 SRC_C   += lx_emul/mapping.c
 SRC_C   += lx_emul/page_alloc.c
 SRC_C   += lx_emul/sched_core.c
-SRC_C   += lx_emul/slab_common.c
 SRC_C   += lx_emul/vmalloc.c
 SRC_C   += lx_emul/delay.c
 

repos/pc/src/lib/pc/lx_emul/slab_common.c

@@ -1,22 +0,0 @@
-/*
- * \brief  Supplement for emulation of mm/slab_common.c
- * \author Josef Soentgen
- * \date   2022-04-05
- */
-
-/*
- * Copyright (C) 2022 Genode Labs GmbH
- *
- * This file is distributed under the terms of the GNU General Public License
- * version 2.
- */
-
-
-#include <linux/slab.h>
-
-void * kmalloc_order(size_t size, gfp_t flags, unsigned int order)
-{
-	return kmalloc(size, flags);
-}
-
-

repos/pc/src/pc_linux/target.inc

@@ -47,6 +47,7 @@ LX_ENABLE += FB
 # mandatory fs support
 LX_ENABLE += PROC_FS SYSFS
 
+# disable optimization not possible in PIC code under Genode
 LX_DISABLE += CC_HAS_ASM_GOTO
 
 # slim down kernel by removing superfluous drivers