From fb37ec1eddfe97e4832701a2a9cd820e36694475 Mon Sep 17 00:00:00 2001
From: Himbeer <himbeer@disroot.org>
Date: Wed, 31 Jul 2024 21:41:05 +0200
Subject: sbi/time: Make timer increment more accurate by reading the 'time'
 register as late as possible

---
 src/lib/sbi/time.zig | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/lib/sbi')

diff --git a/src/lib/sbi/time.zig b/src/lib/sbi/time.zig
index 6abdd4e..eed5324 100644
--- a/src/lib/sbi/time.zig
+++ b/src/lib/sbi/time.zig
@@ -25,11 +25,10 @@ pub fn setTimer(stime_absolute: u64) !void {
 }
 
 pub fn interruptInMillis(millis: u64) !void {
-    const time = riscv.time.read();
-
     var cpus = try hwinfo.byKind(.cpus);
     const frequency = try cpus.next() orelse return error.NoCpusHwInfo;
     const cycles = frequency.value / 1000 * millis;
 
+    const time = riscv.time.read();
     try setTimer(time + cycles);
 }
-- 
cgit v1.2.3