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authorLinus Torvalds <torvalds@linux-foundation.org>2009-07-04 09:46:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-07-04 09:46:01 -0700
commit29f31773e07772e73e3177a4af147244cd080554 (patch)
tree369eb6c6bec35951158fb94ac241e0c81189c5b3 /include
parent59107c6525c0d325649eae807905d34772d5a664 (diff)
parent112942353992d95099fb5b71c679ff1046fccfcf (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: finally remove the obsolete variable $TOPDIR gitignore: ignore scripts/ihex2fw Kbuild: Disable the -Wformat-security gcc flag gitignore: ignore gcov output files kbuild: deb-pkg ship changelog Add new __init_task_data macro to be used in arch init_task.c files. asm-generic/vmlinux.lds.h: shuffle INIT_TASK* macro names in vmlinux.lds.h Add new macros for page-aligned data and bss sections. asm-generic/vmlinux.lds.h: Fix up RW_DATA_SECTION definition.
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/vmlinux.lds.h12
-rw-r--r--include/linux/init_task.h3
-rw-r--r--include/linux/linkage.h9
3 files changed, 18 insertions, 6 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index dccdbed05848..a553f1041cf1 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -191,7 +191,7 @@
. = ALIGN(align); \
*(.data.cacheline_aligned)
-#define INIT_TASK(align) \
+#define INIT_TASK_DATA(align) \
. = ALIGN(align); \
*(.data.init_task)
@@ -434,10 +434,10 @@
/*
* Init task
*/
-#define INIT_TASK_DATA(align) \
+#define INIT_TASK_DATA_SECTION(align) \
. = ALIGN(align); \
.data.init_task : { \
- INIT_TASK \
+ INIT_TASK_DATA(align) \
}
#ifdef CONFIG_CONSTRUCTORS
@@ -705,15 +705,15 @@
* matches the requirment of PAGE_ALIGNED_DATA.
*
* use 0 as page_align if page_aligned data is not used */
-#define RW_DATA_SECTION(cacheline, nosave, pagealigned, inittask) \
+#define RW_DATA_SECTION(cacheline, pagealigned, inittask) \
. = ALIGN(PAGE_SIZE); \
.data : AT(ADDR(.data) - LOAD_OFFSET) { \
- INIT_TASK(inittask) \
+ INIT_TASK_DATA(inittask) \
CACHELINE_ALIGNED_DATA(cacheline) \
READ_MOSTLY_DATA(cacheline) \
DATA_DATA \
CONSTRUCTORS \
- NOSAVE_DATA(nosave) \
+ NOSAVE_DATA \
PAGE_ALIGNED_DATA(pagealigned) \
}
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 5368fbdc7801..7fc01b13be43 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -183,5 +183,8 @@ extern struct cred init_cred;
LIST_HEAD_INIT(cpu_timers[2]), \
}
+/* Attach to the init_task data structure for proper alignment */
+#define __init_task_data __attribute__((__section__(".data.init_task")))
+
#endif
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 @@
#define __page_aligned_bss __section(.bss.page_aligned) __aligned(PAGE_SIZE)
/*
+ * For assembly routines.
+ *
+ * Note when using these that you must specify the appropriate
+ * alignment directives yourself
+ */
+#define __PAGE_ALIGNED_DATA .section ".data.page_aligned", "aw"
+#define __PAGE_ALIGNED_BSS .section ".bss.page_aligned", "aw"
+
+/*
* This is used by architectures to keep arguments on the stack
* untouched by the compiler by keeping them live until the end.
* The argument stack may be owned by the assembly-language