From 8f30525cab4c0e7ed68e61f5f40da7db18e6ff49 Mon Sep 17 00:00:00 2001
From: Marvin Friedrich <contact@marvinf.com>
Date: Wed, 28 Oct 2026 21:49:28 +0100
Subject: [PATCH] sched: Add sched_sleep_until

---
 include/zinnia/sched.h | 2 ++
 sched/core.c           | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/include/zinnia/sched.h b/include/zinnia/sched.h
index f4bf633..5bd43a7 100644
--- a/include/zinnia/sched.h
+++ b/include/zinnia/sched.h
@@ -132,6 +132,8 @@ void sched_wake_locked(struct task* task);
 
 void sched_notify(struct task* task);
 
+void sched_sleep_until(uint64_t deadline_ns);
+
 [[noreturn]]
 void sched_exit();
 
diff --git a/sched/core.c b/sched/core.c
index 2f13a10..41ad4c6 100644
--- a/sched/core.c
+++ b/sched/core.c
@@ -4,6 +4,7 @@
 #include <zinnia/assert.h>
 #include <zinnia/atomic.h>
 #include <zinnia/errno.h>
+#include <zinnia/park.h>
 #include <zinnia/process.h>
 #include <zinnia/sched.h>
 #include <zinnia/spin.h>
@@ -157,3 +158,8 @@ void task_lock(struct task* task) {
 void task_unlock(struct task* task) {
     spin_unlock(atomic_load(&task->lockp, ATOMIC_RELAXED));
 }
+
+void sched_sleep_until(uint64_t deadline_ns) {
+    const uint8_t key = 0;
+    park_timeout(&key, nullptr, nullptr, nullptr, 0, &deadline_ns);
+}