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[Xen-devel] [PATCH v1 4/7] tools: add __used and enable to override
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- From: mcgrof@xxxxxxxxxx
- Date: Fri, 19 Aug 2016 14:41:12 -0700
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- Delivery-date: Fri, 19 Aug 2016 21:41:39 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
From: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>
This adds __used, to be used later in the userspace linker-tables
sandbox. If any userspace applicaiton wants to override they can
add their own definition and then use include_next.
This definition should probably suffice for most uses cases though.
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxx>
---
tools/include/linux/compiler.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/include/linux/compiler.h b/tools/include/linux/compiler.h
index e33fc1df3935..556c991de212 100644
--- a/tools/include/linux/compiler.h
+++ b/tools/include/linux/compiler.h
@@ -5,6 +5,12 @@
/* The "volatile" is due to gcc bugs */
#define barrier() __asm__ __volatile__("": : :"memory")
+
+/* You can override as you see fit on your userspace tool */
+#ifndef __used
+#define __used __attribute__((__used__))
+#endif
+
#ifndef __always_inline
# define __always_inline inline __attribute__((always_inline))
#endif
--
2.9.2
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