Kernel/x86 - Added option to disable preemption, and used it

diff --git a/KernelLand/Kernel/arch/x86/proc.c b/KernelLand/Kernel/arch/x86/proc.c
index aef7278..281b628 100644 (file)
--- a/KernelLand/Kernel/arch/x86/proc.c
+++ b/KernelLand/Kernel/arch/x86/proc.c
@@ -18,6 +18,7 @@
 #define DEBUG_TRACE_SWITCH     0
 #define DEBUG_DISABLE_DOUBLEFAULT      1
 #define DEBUG_VERY_SLOW_PERIOD 0
+#define DEBUG_NOPREEMPT        1
 
 // === CONSTANTS ===
 // Base is 1193182
@@ -989,6 +990,7 @@ void Proc_Scheduler(int CPU)
        // Call the timer update code
        Timer_CallTimers();
 
+       #if !DEBUG_NOPREEMPT
        // If two ticks happen within the same task, and it's not an idle task, swap
        if( gaCPUs[CPU].Current->TID > giNumCPUs && gaCPUs[CPU].Current == gaCPUs[CPU].LastTimerThread )
        {
@@ -996,6 +998,7 @@ void Proc_Scheduler(int CPU)
        }
        
        gaCPUs[CPU].LastTimerThread = gaCPUs[CPU].Current;
+       #endif
 }
 
 // === EXPORTS ===