diff options
author | Tim Abbott <tabbott@ksplice.com> | 2009-06-23 19:59:35 -0400 |
---|---|---|
committer | Sam Ravnborg <sam@ravnborg.org> | 2009-06-26 17:58:39 -0400 |
commit | d2af12aeadaedf657c9fb9c3df984d2c5ab25f4c (patch) | |
tree | 13e4e43971b0ab4164ad5c7d6acdd2dc7168fbe6 | |
parent | 73f1d9391a6aa72efdcea2f302ee7bfcd313c631 (diff) |
Add new macros for page-aligned data and bss sections.
This patch is preparation for replacing most uses of
".bss.page_aligned" and ".data.page_aligned" in the kernel with
macros, so that the section name can later be changed without having
to touch a lot of the kernel.
The long-term goal here is to be able to change the kernel's magic
section names to those that are compatible with -ffunction-sections
-fdata-sections. This requires renaming all magic sections with names
of the form ".data.foo".
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
-rw-r--r-- | include/linux/linkage.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/linkage.h b/include/linux/linkage.h index fee9e59649c1..691f59171c6c 100644 --- a/include/linux/linkage.h +++ b/include/linux/linkage.h | |||
@@ -22,6 +22,15 @@ | |||
22 | #define __page_aligned_bss __section(.bss.page_aligned) __aligned(PAGE_SIZE) | 22 | #define __page_aligned_bss __section(.bss.page_aligned) __aligned(PAGE_SIZE) |
23 | 23 | ||
24 | /* | 24 | /* |
25 | * For assembly routines. | ||
26 | * | ||
27 | * Note when using these that you must specify the appropriate | ||
28 | * alignment directives yourself | ||
29 | */ | ||
30 | #define __PAGE_ALIGNED_DATA .section ".data.page_aligned", "aw" | ||
31 | #define __PAGE_ALIGNED_BSS .section ".bss.page_aligned", "aw" | ||
32 | |||
33 | /* | ||
25 | * This is used by architectures to keep arguments on the stack | 34 | * This is used by architectures to keep arguments on the stack |
26 | * untouched by the compiler by keeping them live until the end. | 35 | * untouched by the compiler by keeping them live until the end. |
27 | * The argument stack may be owned by the assembly-language | 36 | * The argument stack may be owned by the assembly-language |