--- zzzz-none-000/linux-4.9.279/mm/page_alloc.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/mm/page_alloc.c	2023-02-08 11:43:43.000000000 +0000
@@ -71,6 +71,10 @@
 #include <asm/div64.h>
 #include "internal.h"
 
+#if defined(CONFIG_AVM_ENHANCED)
+#include <asm/avm_enh/avm_enh.h>
+#endif
+
 /* prevent >1 _updater_ of zone percpu pageset ->high and ->batch fields */
 static DEFINE_MUTEX(pcp_batch_high_lock);
 #define MIN_PERCPU_PAGELIST_FRACTION	(8)
@@ -2528,6 +2532,9 @@
 void split_page(struct page *page, unsigned int order)
 {
 	int i;
+#if defined(CONFIG_AVM_PAGE_TRACE)
+    unsigned long current_pc = avm_get_page_current_pc(page);
+#endif/*--- #if defined(CONFIG_AVM_PAGE_TRACE) ---*/
 
 	VM_BUG_ON_PAGE(PageCompound(page), page);
 	VM_BUG_ON_PAGE(!page_count(page), page);
@@ -2540,9 +2547,12 @@
 	if (kmemcheck_page_is_tracked(page))
 		split_page(virt_to_page(page[0].shadow), order);
 #endif
-
-	for (i = 1; i < (1 << order); i++)
+	for (i = 1; i < (1 << order); i++) {
 		set_page_refcounted(page + i);
+#if defined(CONFIG_AVM_PAGE_TRACE)
+		avm_set_page_current_pc(page + i, current_pc);
+#endif
+	}
 	split_page_owner(page, order);
 }
 EXPORT_SYMBOL_GPL(split_page);
@@ -3765,7 +3775,11 @@
  */
 struct page *
 __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
-			struct zonelist *zonelist, nodemask_t *nodemask)
+			struct zonelist *zonelist, nodemask_t *nodemask
+#if defined(CONFIG_AVM_PAGE_TRACE)
+            , unsigned long pc
+#endif/*--- #if defined(CONFIG_AVM_PAGE_TRACE) ---*/
+            )
 {
 	struct page *page;
 	unsigned int alloc_flags = ALLOC_WMARK_LOW;
@@ -3858,6 +3872,11 @@
 
 	trace_mm_page_alloc(page, order, alloc_mask, ac.migratetype);
 
+#if defined(CONFIG_AVM_PAGE_TRACE)
+    	if (likely(page)) {
+        	avm_set_page_current_pc(page, pc);
+    	}
+#endif
 	return page;
 }
 EXPORT_SYMBOL(__alloc_pages_nodemask);
@@ -4304,7 +4323,32 @@
 		for_each_online_cpu(cpu)
 			free_pcp += per_cpu_ptr(zone->pageset, cpu)->pcp.count;
 	}
-
+#if defined(CONFIG_AVM_ENHANCED) 
+    {
+    unsigned int sum_pages, v_mem;
+    sum_pages = global_page_state(NR_ACTIVE_ANON)+
+                global_page_state(NR_INACTIVE_ANON)+
+                global_page_state(NR_ISOLATED_ANON)+
+                global_page_state(NR_ACTIVE_FILE)+
+                global_page_state(NR_INACTIVE_FILE)+
+                global_page_state(NR_ISOLATED_FILE)+
+                global_page_state(NR_UNEVICTABLE)+
+                global_page_state(NR_FILE_DIRTY)+
+                global_page_state(NR_WRITEBACK)+
+                global_page_state(NR_UNSTABLE_NFS)+
+                global_page_state(NR_FREE_PAGES)+
+                global_page_state(NR_SLAB_RECLAIMABLE)+
+                global_page_state(NR_SLAB_UNRECLAIMABLE)+
+                global_page_state(NR_FILE_MAPPED)+
+                global_page_state(NR_SHMEM)+
+                global_page_state(NR_PAGETABLE)+
+                global_page_state(NR_BOUNCE)+
+                global_page_state(NR_FREE_CMA_PAGES);
+    v_mem = get_used_vmalloc_mem();
+	printk("global_page_sum %ukB(%u pages) + vmalloc-used = %ukB (%u pages)\n", sum_pages * 4, sum_pages, 
+            v_mem >> 10, v_mem >> PAGE_SHIFT);
+    }
+#endif/*--- #if defined(CONFIG_AVM_ENHANCED)  ---*/
 	printk("active_anon:%lu inactive_anon:%lu isolated_anon:%lu\n"
 		" active_file:%lu inactive_file:%lu isolated_file:%lu\n"
 		" unevictable:%lu dirty:%lu writeback:%lu unstable:%lu\n"