From a85eacdd2406fede4d6ff5cb130b1758978cabb3 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Mon, 19 Feb 2024 19:19:43 +0100
Subject: Kernel: Change timing for context switches

---
 kernel/drivers/pit.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

(limited to 'kernel/drivers/pit.c')

diff --git a/kernel/drivers/pit.c b/kernel/drivers/pit.c
index 1e9048f..060fc54 100644
--- a/kernel/drivers/pit.c
+++ b/kernel/drivers/pit.c
@@ -4,7 +4,8 @@
 #define PIT_IO_MODE_COMMAND 0x43
 
 u64 clock_num_ms_ticks = 0;
-u64 pit_counter = 0;
+u32 pit_counter = 0;
+u32 switch_counter = 0;
 u16 hertz;
 
 u64 pit_num_ms(void) {
@@ -22,7 +23,8 @@ u16 read_pit_count(void) {
   return count;
 }
 
-void set_pit_count(u16 hertz) {
+void set_pit_count(u16 _hertz) {
+  hertz = _hertz;
   u16 divisor = 1193180 / hertz;
 
   /*
@@ -44,9 +46,13 @@ void set_pit_count(u16 hertz) {
 void int_clock(reg_t regs) {
   outb(0x20, 0x20);
   pit_counter++;
-  if (pit_counter*1000 >= hertz) {
+  if (pit_counter * 1000 >= hertz) {
     pit_counter = 0;
-    clock_num_ms_ticks++;
+    clock_num_ms_ticks += 1000 / hertz;
+  }
+  switch_counter++;
+  if (switch_counter * 500 >= hertz) {
+    switch_counter = 0;
     switch_task();
   }
 }
-- 
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