From f4af9f4fbc0041502dde74320aed505127bfbdff Mon Sep 17 00:00:00 2001
From: Yongrong Wang <wangyongrong@xiaomi.com>
Date: Tue, 8 Oct 2024 14:33:44 +0800
Subject: [PATCH] lib/cpu.h: create a new libmetal API metal_yield

metal_yield would be managed at the OS level and dispatched
to metal_cpu_yield, metal_sleep_usec, or others, it is more
flexible to manage this in libmetal

Signed-off-by: Yongrong Wang <wangyongrong@xiaomi.com>
---
 lib/cpu.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/cpu.h b/lib/cpu.h
index 3ee3596b..b30d1f84 100644
--- a/lib/cpu.h
+++ b/lib/cpu.h
@@ -18,6 +18,13 @@
 # include <metal/processor/@PROJECT_PROCESSOR@/cpu.h>
 #else
 # include <metal/processor/generic/cpu.h>
+# include <metal/sleep.h>
+#endif
+
+#if defined(HAVE_PROCESSOR_CPU_H)
+#define metal_yield() metal_cpu_yield()
+#else
+#define metal_yield() metal_sleep_usec(1000)
 #endif
 
 #endif /* __METAL_CPU__H__ */