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Updated GSG of using RT Linux as RTVM in accordance with acrn-kernel v4.19.28

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Signed-off-by: Li, Wilson <wilson.li@intel.com>
This commit is contained in:
Li, Wilson
2019-04-28 10:15:49 +00:00
committed by David Kinder
parent ee4e46cd07
commit e8242a797b
2 changed files with 48 additions and 14 deletions
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35
doc/tutorials/rt_linux.patch Normal file
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@@ -0,0 +1,35 @@
diff --git a/mm/swap.c b/mm/swap.c
index 26fc9b5..d5067e5 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -654,13 +654,15 @@ void lru_add_drain(void)
put_cpu();
}
+#ifdef CONFIG_SMP
+
+static DEFINE_PER_CPU(struct work_struct, lru_add_drain_work);
+
static void lru_add_drain_per_cpu(struct work_struct *dummy)
{
lru_add_drain();
}
-static DEFINE_PER_CPU(struct work_struct, lru_add_drain_work);
-
/*
* Doesn't need any cpu hotplug locking because we do rely on per-cpu
* kworkers being shut down before our page_alloc_cpu_dead callback is
@@ -703,6 +705,12 @@ void lru_add_drain_all(void)
mutex_unlock(&lock);
}
+#else
+void lru_add_drain_all(void)
+{
+ lru_add_drain();
+}
+#endif
/**
* release_pages - batched put_page()