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-rw-r--r--kernel/trace/trace.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index b581e388a9d9..8ddf6b17215c 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -9806,6 +9806,7 @@ static int instance_mkdir(const char *name)
return ret;
}
+#ifdef CONFIG_MMU
static u64 map_pages(unsigned long start, unsigned long size)
{
unsigned long vmap_start, vmap_end;
@@ -9828,6 +9829,12 @@ static u64 map_pages(unsigned long start, unsigned long size)
return (u64)vmap_start;
}
+#else
+static inline u64 map_pages(unsigned long start, unsigned long size)
+{
+ return 0;
+}
+#endif
/**
* trace_array_get_by_name - Create/Lookup a trace array, given its name.