From 4a5a7b68eb89f2b87c5df9cde844a85e4b2a8fca Mon Sep 17 00:00:00 2001
From: Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
Date: Mon, 11 May 2020 03:05:22 +0200
Subject: [PATCH] Kernel: Make usleep aware of dynamic tick length

On my system, ticks_per_second() returns 1280.
So Serenity was always 20% too fast when sleeping!
---
 Kernel/Process.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 8bca1bce5c..7ed7a13240 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -2436,7 +2436,7 @@ int Process::sys$usleep(useconds_t usec)
     REQUIRE_PROMISE(stdio);
     if (!usec)
         return 0;
-    u64 wakeup_time = Thread::current()->sleep(usec / 1000);
+    u64 wakeup_time = Thread::current()->sleep(usec * TimeManagement::the().ticks_per_second() / 1000000);
     if (wakeup_time > g_uptime)
         return -EINTR;
     return 0;