linux-kernel - [PATCH 1/4] asm/sections: add text/data checking functions for arches to override

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Date:	Wed, 17 Jun 2009 12:22:21 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...hat.com, rgetz@...ckfin.uclinux.org,
	akpm@...ux-foundation.org
Subject: [PATCH 1/4] asm/sections: add text/data checking functions for arches to override

Some ports (like the Blackfin arch) have a discontiguous memory map which
means there may be text or data that falls outside of the standard range
of the start/end text/data symbols.  Creating some helper functions allows
these non-standard ports to declare these regions without adversely
affecting anyone else.

Signed-off-by: Mike Frysinger <vapier@...too.org>
---
 include/asm-generic/sections.h |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index 4ce48e8..ee19462 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -20,4 +20,20 @@ extern char __start_rodata[], __end_rodata[];
 #define dereference_function_descriptor(p) (p)
 #endif
 
+/* random extra sections (if any).  Override
+ * in asm/sections.h */
+#ifndef arch_is_kernel_text
+static inline int arch_is_kernel_text(unsigned long addr)
+{
+	return 0;
+}
+#endif
+
+#ifndef arch_is_kernel_data
+static inline int arch_is_kernel_data(unsigned long addr)
+{
+	return 0;
+}
+#endif
+
 #endif /* _ASM_GENERIC_SECTIONS_H_ */
-- 
1.6.3.1

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