feat: graphing in MTK toolkit, kernel exposes CPU time, Processes app Performance tab

kernel/src/Sched/Scheduler.cpp

@@ -163,6 +163,7 @@ namespace Sched {
             processTable[i].stackBase = 0;
             processTable[i].entryPoint = 0;
             processTable[i].sliceRemaining = 0;
+            processTable[i].cpuTimeMs = 0;
             processTable[i].pml4Phys = 0;
             processTable[i].kernelStackTop = 0;
             processTable[i].userStackTop = 0;
@@ -353,6 +354,7 @@ namespace Sched {
         proc.stackBase = (uint64_t)kernelStackBase;
         proc.entryPoint = entry;
         proc.sliceRemaining = TimeSliceMs;
+        proc.cpuTimeMs = 0;
         proc.pml4Phys = pml4Phys;
         proc.kernelStackTop = kernelStackTop;
         proc.userStackTop = UserStackTop - 8;
@@ -638,6 +640,8 @@ namespace Sched {
             return;
         }
 
+        processTable[slot].cpuTimeMs += elapsedMs;
+
         // Check if another CPU requested this process be killed.
         // We are on the CPU running it, so ExitProcess is safe here.
         if (processTable[slot].killPending) {