feat: mm: page poison debugging and assertion enhancements

This commit introduces a page poison debugging mechanism and additional
assertions for memory management, improving system maintainability and
debugging capabilities. The changes aim to detect illegal memory usage
early and provide better clarity in managing page allocations.

Changes:
- Added `RT_DEBUGGING_PAGE_POISON` option to enable memory usage tracing.
- Introduced a page poisoner for detecting illegal memory usage.
- Implemented region-based memory tracking using bitmaps.
- Enhanced spinlock protection for memory management operations.
- Fixed several assertion checks for memory safety.
- Renamed macros for consistency (`FLOOR` to `CEIL`).
- Refined memory allocation and deallocation logic to include poisoning.
- Updated Kconfig to add configurable `RT_PAGE_MAX_ORDER` and poison debugging.
- Improved debugging outputs for page regions and memory operations.

Signed-off-by: Shell <smokewood@qq.com>

components/mm/Kconfig

@@ -8,6 +8,17 @@ config RT_PAGE_AFFINITY_BLOCK_SIZE
         It should be set to `1ul << ((index + block) - page_offset)` in this case.
         You could also exploit this as a tunning for cache coloring.
 
+config RT_PAGE_MAX_ORDER
+    int "Max order of pages allocatable by page allocator"
+    default 11
+    depends on ARCH_MM_MMU
+    help
+        For example, A value of 11 means the maximum chunk of contiguous memory
+        allocatable by page system is 2^(11 + ARCH_PAGE_BITS - 1) Bytes.
+        Large memory requirement can consume all system resource, and should
+        consider reserved memory instead to enhance system endurance.
+        Max order should at least satisfied usage by huge page.
+
 config RT_USING_MEMBLOCK
     bool "Using memblock"
     default n
@@ -28,4 +39,8 @@ config RT_DEBUGGING_ALIASING
     bool "Using aliasing paging debugger"
     default n
 
+config RT_DEBUGGING_PAGE_POISON
+    bool "Using page poisoner to detect illegal usage"
+    default n
+
 endmenu

components/mm/mm_page.c

@@ -48,7 +48,7 @@ typedef union
     rt_ubase_t aff_page_map;
 } pgls_agr_t;
 
-#define PGLS_IS_AFF_MAP(pgls) ((pgls).aff_page_map & 0x1)
+#define PGLS_IS_AFF_MAP(pgls) (!!((pgls).aff_page_map & 0x1))
 #define PGLS_FROM_AFF_MAP(pgls, aff_map) \
     ((pgls).aff_page_map = (-(rt_ubase_t)(aff_map)) | 0x1)
 #define PGLS_GET_AFF_MAP(pgls) \
@@ -71,12 +71,14 @@ static rt_page_t
 static pgls_agr_t page_list_high[RT_PAGE_MAX_ORDER];
 static rt_page_t
     aff_pglist_high[AFFID_NUMOF_ID_IN_SET(0) * 2 - 2];
-static RT_DEFINE_SPINLOCK(_spinlock);
+
+/* protect buddy list and page records */
+static RT_DEFINE_SPINLOCK(_pgmgr_lock);
 
 #define page_start ((rt_page_t)rt_mpr_start)
 
-static rt_size_t _page_nr, _freed_nr, _freed_nr_hi;
+static rt_size_t _page_nr, _page_nr_hi;
-static rt_size_t _page_nr_hi;
+static rt_size_t _freed_nr, _freed_nr_hi;
 static rt_size_t early_offset;
 
 static const char *get_name(rt_varea_t varea)
@@ -117,7 +119,7 @@ static struct rt_mem_obj mm_page_mapper = {
     .hint_free = hint_free,
 };
 
-#ifdef RT_DEBUGING_PAGE_LEAK
+#ifdef RT_DEBUGGING_PAGE_LEAK
 static volatile int enable;
 static rt_page_t _trace_head;
 #define TRACE_ALLOC(pg, size)       _trace_alloc(pg, __builtin_return_address(0), size)
@@ -232,6 +234,164 @@ static void _trace_free(rt_page_t page, void *caller, size_t size_bits)
 #define TRACE_FREE(x, y)
 #endif
 
+/* page management */
+#ifdef RT_DEBUGGING_PAGE_POISON
+#include <bitmap.h>
+RT_BITMAP_DECLARE(_init_region_usage_trace, (1 << (1 + ARCH_SECTION_SHIFT - ARCH_PAGE_SHIFT)));
+#else
+typedef char rt_bitmap_t[0];
+#define RT_BITMAP_LEN(__name) (__name)
+#endif /* RT_DEBUGGING_PAGE_POISON */
+
+static struct installed_page_reg
+{
+    rt_region_t region_area;
+    struct installed_page_reg *next;
+    struct rt_spinlock lock;
+#ifdef RT_DEBUGGING_PAGE_POISON
+    rt_bitmap_t *usage_trace;
+#endif /* RT_DEBUGGING_PAGE_POISON */
+} _init_region;
+
+static RT_DEFINE_SPINLOCK(_inst_page_reg_lock);
+static struct installed_page_reg *_inst_page_reg_head;
+
+static void _print_region_list(void)
+{
+    struct installed_page_reg *iter;
+    int counts = 0;
+
+    rt_spin_lock(&_inst_page_reg_lock);
+    iter = _inst_page_reg_head;
+    while (iter != RT_NULL)
+    {
+        rt_kprintf("  %d: [%p, %p]\n", counts++, iter->region_area.start + PV_OFFSET,
+                   iter->region_area.end + PV_OFFSET);
+        iter = iter->next;
+    }
+    rt_spin_unlock(&_inst_page_reg_lock);
+}
+
+static struct installed_page_reg *_find_page_region(rt_ubase_t page_va)
+{
+    struct installed_page_reg *iter;
+    struct installed_page_reg *rc = RT_NULL;
+    rt_bool_t found = RT_FALSE;
+
+    rt_spin_lock(&_inst_page_reg_lock);
+    for (iter = _inst_page_reg_head; iter; iter = iter->next)
+    {
+        if (page_va >= iter->region_area.start &&
+            page_va < iter->region_area.end)
+        {
+            found = RT_TRUE;
+            break;
+        }
+    }
+    rt_spin_unlock(&_inst_page_reg_lock);
+
+    if (found)
+    {
+        rc = iter;
+    }
+    return rc;
+}
+
+rt_bool_t rt_page_is_member(rt_base_t page_pa)
+{
+    return _find_page_region(page_pa - PV_OFFSET) != RT_NULL;
+}
+
+static rt_bool_t _pages_are_member(rt_ubase_t page_va, size_t size_bits)
+{
+    rt_bool_t rc = RT_TRUE;
+    rt_ubase_t iter_frame = page_va;
+    size_t frame_end = page_va + (1 << size_bits);
+
+    while (iter_frame < frame_end)
+    {
+        size_t overlap_size;
+        struct installed_page_reg *page_reg = _find_page_region(iter_frame);
+
+        if (!page_reg)
+        {
+            rc = RT_FALSE;
+            LOG_E("Allocated invalid page %p", iter_frame);
+            break;
+        }
+
+        overlap_size = page_reg->region_area.end - iter_frame;
+        iter_frame += overlap_size;
+    }
+
+    return rc;
+}
+
+#ifdef RT_DEBUGGING_PAGE_POISON
+static rt_err_t _unpoisoned_pages(char *head, rt_uint32_t size_bits)
+{
+    rt_err_t error = RT_EOK;
+    struct installed_page_reg *page_reg = _find_page_region((rt_ubase_t)head);
+
+    if (page_reg)
+    {
+        int pages_count = 1 << size_bits;
+        long bit_number = ((rt_ubase_t)head - page_reg->region_area.start) / ARCH_PAGE_SIZE;
+
+        /* mark the pages as allocated */
+        for (size_t i = 0; i < pages_count; i++, bit_number++)
+        {
+            rt_spin_lock(&_inst_page_reg_lock);
+            if (rt_bitmap_test_bit(page_reg->usage_trace, bit_number))
+            {
+                error = RT_ERROR;
+                rt_kprintf("%s: Pages[%p, %d] is already in used by others!\n", __func__, head, size_bits);
+            }
+            rt_bitmap_set_bit(page_reg->usage_trace, bit_number);
+            rt_spin_unlock(&_inst_page_reg_lock);
+        }
+    }
+    else
+    {
+        error = RT_EINVAL;
+    }
+
+    return -error;
+}
+
+static rt_err_t _poisoned_pages(char *head, rt_uint32_t size_bits)
+{
+    rt_err_t error = RT_EOK;
+    struct installed_page_reg *page_reg = _find_page_region((rt_ubase_t)head);
+
+    if (page_reg)
+    {
+        int pages_count = 1 << size_bits;
+        long bit_number = ((rt_ubase_t)head - page_reg->region_area.start) / ARCH_PAGE_SIZE;
+
+        /* mark the pages as free */
+        for (size_t i = 0; i < pages_count; i++, bit_number++)
+        {
+            rt_spin_lock(&_inst_page_reg_lock);
+            if (!rt_bitmap_test_bit(page_reg->usage_trace, bit_number))
+            {
+                error = RT_ERROR;
+                rt_kprintf("%s: Pages[%p, %d] is freed before!\n", __func__, head, size_bits);
+            }
+            rt_bitmap_clear_bit(page_reg->usage_trace, bit_number);
+            rt_spin_unlock(&_inst_page_reg_lock);
+        }
+    }
+    else
+    {
+        error = RT_EINVAL;
+    }
+
+    return -error;
+}
+
+#endif /* RT_DEBUGGING_PAGE_POISON */
+
 static inline void *page_to_addr(rt_page_t page)
 {
     return (void *)(((page - page_start) << ARCH_PAGE_SHIFT) - PV_OFFSET);
@@ -248,12 +408,16 @@ static inline rt_page_t addr_to_page(rt_page_t pg_start, void *addr)
     return &pg_start[((rt_ubase_t)addr >> ARCH_PAGE_SHIFT)];
 }
 
-#define FLOOR(val, align) (((rt_size_t)(val) + (align)-1) & ~((align)-1))
+#define CEIL(val, align) (((rt_size_t)(val) + (align)-1) & ~((align)-1))
 
+/**
+ * shadow is the accessible region by buddy but not usable for page manager.
+ * shadow mask is used for calculate the region head from an address.
+ */
 const rt_size_t shadow_mask =
     ((1ul << (RT_PAGE_MAX_ORDER + ARCH_PAGE_SHIFT - 1)) - 1);
 
-const rt_size_t rt_mpr_size = FLOOR(
+const rt_size_t rt_mpr_size = CEIL(
     ((1ul << (ARCH_VADDR_WIDTH - ARCH_PAGE_SHIFT))) * sizeof(struct rt_page),
     ARCH_PAGE_SIZE);
 
@@ -300,6 +464,8 @@ static inline struct rt_page *_buddy_get(struct rt_page *p,
 {
     rt_size_t addr;
 
+    RT_ASSERT(size_bits < RT_PAGE_MAX_ORDER - 1);
+
     addr = (rt_size_t)rt_page_page2addr(p);
     addr ^= (1UL << (size_bits + ARCH_PAGE_SHIFT));
     return rt_page_addr2page((void *)addr);
@@ -374,6 +540,7 @@ static void _page_remove(rt_page_t *page_head, struct rt_page *p,
         p->next->pre = p->pre;
     }
 
+    RT_ASSERT(p->size_bits == size_bits);
     _page_alloc(p);
 }
 
@@ -418,7 +585,7 @@ static int _pages_ref_get(struct rt_page *p, rt_uint32_t size_bits)
 }
 
 static int _pages_free(pgls_agr_t page_list[], struct rt_page *p,
-                       rt_uint32_t size_bits)
+                       char *frame_va, rt_uint32_t size_bits)
 {
     rt_uint32_t level = size_bits;
     struct rt_page *buddy;
@@ -429,6 +596,8 @@ static int _pages_free(pgls_agr_t page_list[], struct rt_page *p,
     RT_ASSERT(p->ref_cnt > 0);
     RT_ASSERT(p->size_bits == ARCH_ADDRESS_WIDTH_BITS);
     RT_ASSERT(size_bits < RT_PAGE_MAX_ORDER);
+    RT_UNUSED(_pages_are_member);
+    RT_ASSERT(_pages_are_member((rt_ubase_t)frame_va, size_bits));
 
     p->ref_cnt--;
     if (p->ref_cnt != 0)
@@ -436,6 +605,10 @@ static int _pages_free(pgls_agr_t page_list[], struct rt_page *p,
         return 0;
     }
 
+#ifdef RT_DEBUGGING_PAGE_POISON
+    _poisoned_pages(frame_va, size_bits);
+#endif /* RT_DEBUGGING_PAGE_POISON */
+
     while (level < RT_PAGE_MAX_ORDER - 1)
     {
         buddy = _buddy_get(p, level);
@@ -610,9 +783,9 @@ int rt_page_ref_get(void *addr, rt_uint32_t size_bits)
     int ref;
 
     p = rt_page_addr2page(addr);
-    level = rt_spin_lock_irqsave(&_spinlock);
+    level = rt_spin_lock_irqsave(&_pgmgr_lock);
     ref = _pages_ref_get(p, size_bits);
-    rt_spin_unlock_irqrestore(&_spinlock, level);
+    rt_spin_unlock_irqrestore(&_pgmgr_lock, level);
     return ref;
 }
 
@@ -622,9 +795,9 @@ void rt_page_ref_inc(void *addr, rt_uint32_t size_bits)
     rt_base_t level;
 
     p = rt_page_addr2page(addr);
-    level = rt_spin_lock_irqsave(&_spinlock);
+    level = rt_spin_lock_irqsave(&_pgmgr_lock);
     _pages_ref_inc(p, size_bits);
-    rt_spin_unlock_irqrestore(&_spinlock, level);
+    rt_spin_unlock_irqrestore(&_pgmgr_lock, level);
 }
 
 static rt_page_t (*pages_alloc_handler)(pgls_agr_t page_list[],
@@ -656,27 +829,27 @@ rt_inline void *_do_pages_alloc(rt_uint32_t size_bits, size_t flags, int affid)
     rt_base_t level;
     pgls_agr_t *page_list = _flag_to_page_list(flags);
 
-    level = rt_spin_lock_irqsave(&_spinlock);
+    level = rt_spin_lock_irqsave(&_pgmgr_lock);
     p = pages_alloc_handler(page_list, size_bits, affid);
     if (p)
     {
         _freed_nr -= 1 << size_bits;
     }
-    rt_spin_unlock_irqrestore(&_spinlock, level);
+    rt_spin_unlock_irqrestore(&_pgmgr_lock, level);
 
     if (!p && page_list != page_list_low)
     {
         /* fall back */
         page_list = page_list_low;
 
-        level = rt_spin_lock_irqsave(&_spinlock);
+        level = rt_spin_lock_irqsave(&_pgmgr_lock);
         p = pages_alloc_handler(page_list, size_bits, affid);
         if (p)
         {
             _freed_nr -= 1 << size_bits;
             _freed_nr_hi -= 1 << size_bits;
         }
-        rt_spin_unlock_irqrestore(&_spinlock, level);
+        rt_spin_unlock_irqrestore(&_pgmgr_lock, level);
     }
 
     if (p)
@@ -684,12 +857,18 @@ rt_inline void *_do_pages_alloc(rt_uint32_t size_bits, size_t flags, int affid)
         alloc_buf = page_to_addr(p);
         _last_alloc = (rt_ubase_t)alloc_buf;
 
-        #ifdef RT_DEBUGING_PAGE_LEAK
+        #ifdef RT_DEBUGGING_PAGE_LEAK
             level = rt_spin_lock_irqsave(&_spinlock);
             TRACE_ALLOC(p, size_bits);
             rt_spin_unlock_irqrestore(&_spinlock, level);
         #endif
+
+#ifdef RT_DEBUGGING_PAGE_POISON
+        _unpoisoned_pages(alloc_buf, size_bits);
+#endif /* RT_DEBUGGING_PAGE_POISON */
+
     }
+
     return alloc_buf;
 }
 
@@ -763,8 +942,8 @@ int rt_pages_free(void *addr, rt_uint32_t size_bits)
     if (p)
     {
         rt_base_t level;
-        level = rt_spin_lock_irqsave(&_spinlock);
+        level = rt_spin_lock_irqsave(&_pgmgr_lock);
-        real_free = _pages_free(page_list, p, size_bits);
+        real_free = _pages_free(page_list, p, addr, size_bits);
         if (real_free)
         {
             _freed_nr += 1 << size_bits;
@@ -774,12 +953,13 @@ int rt_pages_free(void *addr, rt_uint32_t size_bits)
             }
             TRACE_FREE(p, size_bits);
         }
-        rt_spin_unlock_irqrestore(&_spinlock, level);
+        rt_spin_unlock_irqrestore(&_pgmgr_lock, level);
     }
 
     return real_free;
 }
 
+/* debug command */
 int rt_page_list(void) __attribute__((alias("list_page")));
 
 #define PGNR2SIZE(nr) ((nr)*ARCH_PAGE_SIZE / 1024)
@@ -814,9 +994,9 @@ int list_page(void)
     int i;
     rt_size_t free = 0;
     rt_size_t installed = _page_nr;
-
     rt_base_t level;
-    level = rt_spin_lock_irqsave(&_spinlock);
+
+    level = rt_spin_lock_irqsave(&_pgmgr_lock);
 
     /* dump affinity map area */
     for (i = 0; i < AFFID_BLK_BITS; i++)
@@ -839,10 +1019,13 @@ int list_page(void)
         _dump_page_list(i, lp, hp, &free);
     }
 
-    rt_spin_unlock_irqrestore(&_spinlock, level);
+    rt_spin_unlock_irqrestore(&_pgmgr_lock, level);
     rt_kprintf("-------------------------------\n");
-    rt_kprintf("Page Summary:\n => free/installed: 0x%lx/0x%lx (%ld/%ld KB)\n",
+    rt_kprintf("Page Summary:\n => free/installed:\n  0x%lx/0x%lx (%ld/%ld KB)\n",
                free, installed, PGNR2SIZE(free), PGNR2SIZE(installed));
+
+    rt_kprintf(" => Installed Pages Region:\n");
+    _print_region_list();
     rt_kprintf("-------------------------------\n");
 
     return 0;
@@ -887,7 +1070,7 @@ static void _install_page(rt_page_t mpr_head, rt_region_t region,
     _freed_nr += ((region.end - region.start) >> ARCH_PAGE_SHIFT);
 
     shadow.start = region.start & ~shadow_mask;
-    shadow.end = FLOOR(region.end, shadow_mask + 1);
+    shadow.end = CEIL(region.end, shadow_mask + 1);
 
     if (shadow.end + pvoffset > UINT32_MAX)
         _high_page_configured = 1;
@@ -958,50 +1141,19 @@ static void *_aligned_to_affinity(rt_ubase_t head_page_pa, void *mapped_to)
     return (void *)head_page_pg_aligned;
 }
 
-/* page management */
-static struct installed_page_reg
-{
-    rt_region_t region_area;
-    struct installed_page_reg *next;
-} _init_region;
-static _Atomic(struct installed_page_reg *) _head;
-
-static void _update_region_list(struct installed_page_reg *member)
-{
-    struct installed_page_reg *head;
-    do
-    {
-        head = rt_atomic_load(&_head);
-        member->next = head;
-    } while (!rt_atomic_compare_exchange_strong(&_head, &head, member));
-}
-
-rt_bool_t rt_page_is_member(rt_base_t page_pa)
-{
-    rt_bool_t rc = RT_FALSE;
-    rt_ubase_t page_va = page_pa - PV_OFFSET;
-    for (struct installed_page_reg *head = _head; head; head = head->next)
-    {
-        if (page_va >= head->region_area.start &&
-            page_va < head->region_area.end)
-        {
-            rc = RT_TRUE;
-            break;
-        }
-    }
-
-    return rc;
-}
-
 void rt_page_init(rt_region_t reg)
 {
     int i;
     rt_region_t shadow;
 
     /* setup install page status */
+    rt_spin_lock_init(&_init_region.lock);
     _init_region.region_area = reg;
     _init_region.next = RT_NULL;
-    _head = &_init_region;
+#ifdef RT_DEBUGGING_PAGE_POISON
+    _init_region.usage_trace = _init_region_usage_trace;
+#endif /* RT_DEBUGGING_PAGE_POISON */
+    _inst_page_reg_head = &_init_region;
 
     /* adjust install region. inclusive start, exclusive end */
     reg.start += ARCH_PAGE_MASK;
@@ -1014,7 +1166,7 @@ void rt_page_init(rt_region_t reg)
     }
 
     shadow.start = reg.start & ~shadow_mask;
-    shadow.end = FLOOR(reg.end, shadow_mask + 1);
+    shadow.end = CEIL(reg.end, shadow_mask + 1);
     LOG_D("[Init page] start: 0x%lx, end: 0x%lx, total: 0x%lx", reg.start,
           reg.end, page_nr);
 
@@ -1054,7 +1206,7 @@ void rt_page_init(rt_region_t reg)
         (rt_size_t)addr_to_page(page_start, (void *)shadow.start) &
         ~ARCH_PAGE_MASK;
     init_mpr_align_end =
-        FLOOR(addr_to_page(page_start, (void *)shadow.end), ARCH_PAGE_SIZE);
+        CEIL(addr_to_page(page_start, (void *)shadow.end), ARCH_PAGE_SIZE);
     rt_size_t init_mpr_size = init_mpr_align_end - init_mpr_align_start;
     rt_size_t init_mpr_npage = init_mpr_size >> ARCH_PAGE_SHIFT;
 
@@ -1093,7 +1245,7 @@ static int _load_mpr_area(void *head, void *tail)
 {
     int err = 0;
     char *iter = (char *)((rt_ubase_t)head & ~ARCH_PAGE_MASK);
-    tail = (void *)FLOOR(tail, ARCH_PAGE_SIZE);
+    tail = (void *)CEIL(tail, ARCH_PAGE_SIZE);
 
     while (iter != tail)
     {
@@ -1124,7 +1276,7 @@ static int _get_mpr_ready_n_install(rt_ubase_t inst_head, rt_ubase_t inst_end)
     void *head, *tail;
 
     shadow.start = region.start & ~shadow_mask;
-    shadow.end = FLOOR(region.end, shadow_mask + 1);
+    shadow.end = CEIL(region.end, shadow_mask + 1);
     head = addr_to_page(page_start, (void *)shadow.start);
     tail = addr_to_page(page_start, (void *)shadow.end);
 
@@ -1132,14 +1284,17 @@ static int _get_mpr_ready_n_install(rt_ubase_t inst_head, rt_ubase_t inst_end)
 
     if (err == RT_EOK)
     {
+        rt_ubase_t level = rt_spin_lock_irqsave(&_pgmgr_lock);
         _install_page(rt_mpr_start, region, _page_insert);
+        rt_spin_unlock_irqrestore(&_pgmgr_lock, level);
     }
 
     return err;
 }
 
 static void _update_region_list(struct installed_page_reg *member,
-                                rt_ubase_t inst_head, rt_ubase_t inst_end)
+                                rt_ubase_t inst_head, rt_ubase_t inst_end,
+                                rt_bitmap_t *ut_bitmap)
 {
     rt_spin_lock_init(&member->lock);
 
@@ -1147,7 +1302,12 @@ static void _update_region_list(struct installed_page_reg *member,
 
     member->region_area.start = inst_head;
     member->region_area.end = inst_end;
+
+#ifdef RT_DEBUGGING_PAGE_POISON
     member->usage_trace = ut_bitmap;
+#else
+    RT_UNUSED(ut_bitmap);
+#endif /* RT_DEBUGGING_PAGE_POISON */
 
     member->next = _inst_page_reg_head;
     _inst_page_reg_head = member;
@@ -1166,12 +1326,15 @@ int rt_page_install(rt_region_t region)
         rt_ubase_t inst_head = region.start;
         rt_ubase_t inst_end = region.end;
         rt_ubase_t iter = inst_head;
+        int pages_count = (inst_end - inst_head) / ARCH_PAGE_SIZE;
         struct installed_page_reg *installed_pgreg =
-            rt_malloc(sizeof(*installed_pgreg));
+            rt_calloc(1, sizeof(struct installed_page_reg) +
+                      RT_BITMAP_LEN(pages_count) * sizeof(rt_bitmap_t));
 
         if (installed_pgreg)
         {
-            _update_region_list(installed_pgreg, inst_head, inst_end);
+            _update_region_list(installed_pgreg, inst_head, inst_end,
+                                (rt_bitmap_t *)(installed_pgreg + 1));
 
             if ((rt_ubase_t)iter & shadow_mask)
             {

components/mm/mm_page.h

@@ -36,7 +36,7 @@
 #define RT_PAGE_PICK_AFFID(ptr) \
     ((((long)ptr) & (RT_PAGE_AFFINITY_BLOCK_SIZE - 1)) / ARCH_PAGE_SIZE)
 
-#ifdef RT_DEBUGING_PAGE_LEAK
+#ifdef RT_DEBUGGING_PAGE_LEAK
 #define DEBUG_FIELD struct {    \
     /* trace list */            \
     struct rt_page *tl_next;    \

src/Kconfig

@@ -289,17 +289,6 @@ endmenu
 
 menu "Memory Management"
 
-    config RT_PAGE_MAX_ORDER
-        int "Max order of pages allocatable by page allocator"
-        default 11
-        depends on ARCH_MM_MMU
-        help
-            For example, A value of 11 means the maximum chunk of contiguous memory
-            allocatable by page system is 2^(11 + ARCH_PAGE_BITS - 1) Bytes.
-            Large memory requirement can consume all system resource, and should
-            consider reserved memory instead to enhance system endurance.
-            Max order should at least satisfied usage by huge page.
-
     config RT_USING_MEMPOOL
         bool "Using memory pool"
         default y