From: Thierry Reding <treding@xxxxxxxxxx>
Add a helper to check if an object (given an address and a size) is part
of a section (given beginning and end addresses). For convenience, also
provide a helper that performs this check for __init data using the
__init_begin and __init_end limits.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
include/asm-generic/sections.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index b58fd667f87b..529909090cd6 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -63,4 +63,15 @@ static inline int arch_is_kernel_data(unsigned long addr)
}
#endif
+static inline bool section_contains(void *virt, size_t size, void *begin,
+ void *end)
+{
+ return virt >= begin && virt + size <= end;
+}
+
+static inline bool init_section_contains(void *virt, size_t size)
+{
+ return section_contains(virt, size, __init_begin, __init_end);
+}
+
#endif /* _ASM_GENERIC_SECTIONS_H_ */
--
2.5.0
--
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