Kernel: Make the colonel run at "Idle" priority (the lowest possible.)

This means it won't hog the CPU for more than a single timeslice. :^)

3 files changed, 5 insertions, 1 deletions

diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index af7716c0bd..2a841a1089 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -2376,6 +2376,7 @@ int Process::sys$get_shared_buffer_size(int shared_buffer_id)
 const char* to_string(Process::Priority priority)
 {
     switch (priority) {
+    case Process::IdlePriority: return "Idle";
     case Process::LowPriority: return "Low";
     case Process::NormalPriority: return "Normal";
     case Process::HighPriority: return "High";
diff --git a/Kernel/Process.h b/Kernel/Process.h
index 6c95fc644e..3029533852 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -43,6 +43,7 @@ public:
     static Vector<Process*> all_processes();
 
     enum Priority {
+        IdlePriority,
         LowPriority,
         NormalPriority,
         HighPriority,
diff --git a/Kernel/Scheduler.cpp b/Kernel/Scheduler.cpp
index 66f91c8871..52b6cc3965 100644
--- a/Kernel/Scheduler.cpp
+++ b/Kernel/Scheduler.cpp
@@ -18,6 +18,8 @@ static dword time_slice_for(Process::Priority priority)
         return 15;
     case Process::LowPriority:
         return 5;
+    case Process::IdlePriority:
+        return 1;
     }
     ASSERT_NOT_REACHED();
 }
@@ -385,7 +387,7 @@ void Scheduler::initialize()
     initialize_redirection();
     s_colonel_process = Process::create_kernel_process("colonel", nullptr);
     // Make sure the colonel uses a smallish time slice.
-    s_colonel_process->set_priority(Process::LowPriority);
+    s_colonel_process->set_priority(Process::IdlePriority);
     load_task_register(s_redirection.selector);
 }