From 59893c116e9e4e5dd04c24c0ba2fd06fe1936500 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Thu, 4 Jul 2024 20:22:32 +0200
Subject: scheduler: Use get_uptime() since it caches the result

Apparently getting the current TSC is a expensive operation. This change
had a significant improvements for I/O heavy applications.
---
 kernel/timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'kernel/timer.c')

diff --git a/kernel/timer.c b/kernel/timer.c
index 21020b0..b00a24b 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -29,7 +29,7 @@ void timer_wait_for_init(void) {
 
 u64 timer_current_uptime = 0; // This gets updated by the PIT handler
 u64 timer_get_uptime(void) {
-  return tsc_calculate_ms(tsc_get());
+  return timer_current_uptime;
 }
 
 void timer_get(struct timespec *tp) {
-- 
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