reduce the size of ppage by 8 bytes using signly linked list

[lunaix-os.git] / lunaix-os / scripts / gdb / lunadbg / profiling / pmstat.py

diff --git a/lunaix-os/scripts/gdb/lunadbg/profiling/pmstat.py b/lunaix-os/scripts/gdb/lunadbg/profiling/pmstat.py
index 1e84d873460a35969114ee88c8f7fccc6284d2fc..209a4c50414badbcc55257fbb6cf39c54b5ca116 100644 (file)
--- a/lunaix-os/scripts/gdb/lunadbg/profiling/pmstat.py
+++ b/lunaix-os/scripts/gdb/lunadbg/profiling/pmstat.py
@@ -1,14 +1,18 @@
 from ..symbols import LunaixSymbols
 from ..structs.page import PageStruct
+from ..structs.pmem import PMem
 from ..pp import MyPrettyPrinter
 import math
 
+ENTER_CONTIG = 0
+LEAVE_CONTIG = 1
+
 class PhysicalMemProfile:
     def __init__(self) -> None:
         super().__init__()
-        self._pm_list = LunaixSymbols.debug_sym("pmm", "pm_table")
+        self._pmem    = PMem(LunaixSymbols.debug_sym("pmm", "memory").value().address)
 
-        self.max_mem_pg = int(LunaixSymbols.debug_sym("pmm", "max_pg").value())
+        self.max_mem_pg = self._pmem.list_len()
         self.max_mem_sz = self.max_mem_pg * 4096
         self.mem_distr = []
 
@@ -16,22 +20,34 @@ class PhysicalMemProfile:
         self.__mem_distr_granule = distr_granule
         self.mem_distr.clear()
 
-        page_per_granule = self.max_mem_pg / self.__mem_distr_granule
-        page_per_granule = math.ceil(page_per_granule)
+        pplist = self._pmem.pplist()
+        page_per_granule = int(self.max_mem_pg) // self.__mem_distr_granule
         remainder = self.max_mem_pg % self.__mem_distr_granule
         bucket = 0
         non_contig = 0
-        last_contig = False
-        for i in range(self.max_mem_pg):
-            element = PageStruct(self._pm_list[i].address)
-            bucket += int(element.ref > 0)
-            if last_contig:
-                last_contig = element.ref > 0
-                non_contig += int(not last_contig)
-            else:
-                last_contig = element.ref > 0
-
-            if (i + 1) % page_per_granule == 0:
+        contig_state = LEAVE_CONTIG
+        new_state = LEAVE_CONTIG
+
+        i = 0
+        while i < self.max_mem_pg:
+            element = PageStruct(pplist[i].address)
+
+            nr_pgs = 1
+            if element.lead_page():
+                nr_pgs = 1 << element.order
+                if element.busy():
+                    bucket += nr_pgs
+                    new_state = ENTER_CONTIG
+                else:
+                    new_state = LEAVE_CONTIG
+            
+            i += nr_pgs
+
+            if contig_state != new_state:
+                non_contig += int(new_state == LEAVE_CONTIG)
+                contig_state = new_state
+
+            if i % page_per_granule == 0:
                 self.mem_distr.append(bucket)
                 bucket = 0