define new percpu interface for shared data

[safe/jmp/linux-2.6] / include / asm-generic / vmlinux.lds.h

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 9fcc8d9..a2b09ed 100644 (file)
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -9,8 +9,13 @@
 /* Align . to a 8 byte boundary equals to maximum function alignment. */
 #define ALIGN_FUNCTION()  . = ALIGN(8)
 
-#define RODATA                                                         \
-       . = ALIGN(4096);                                                \
+/* .data section */
+#define DATA_DATA                                                      \
+       *(.data)                                                        \
+       *(.data.init.refok)
+
+#define RO_DATA(align)                                                 \
+       . = ALIGN((align));                                             \
        .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
                VMLINUX_SYMBOL(__start_rodata) = .;                     \
                *(.rodata) *(.rodata.*)                                 \
@@ -130,7 +135,11 @@
                VMLINUX_SYMBOL(__end_rodata) = .;                       \
        }                                                               \
                                                                        \
-       . = ALIGN(4096);
+       . = ALIGN((align));
+
+/* RODATA provided for backward compatibility.
+ * All archs are supposed to use RO_DATA() */
+#define RODATA RO_DATA(4096)
 
 #define SECURITY_INIT                                                  \
        .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
@@ -139,6 +148,13 @@
                VMLINUX_SYMBOL(__security_initcall_end) = .;            \
        }
 
+/* .text section. Map to function alignment to avoid address changes
+ * during second ld run in second ld pass when generating System.map */
+#define TEXT_TEXT                                                      \
+               ALIGN_FUNCTION();                                       \
+               *(.text)                                                \
+               *(.text.init.refok)
+
 /* sched.text is aling to function alignment to secure we have same
  * address even at second ld pass when generating System.map */
 #define SCHED_TEXT                                                     \
@@ -208,7 +224,7 @@
        }
 
 #define NOTES                                                          \
-               .notes : { *(.note.*) } :note
+       .notes : { *(.note.*) } :note
 
 #define INITCALLS                                                      \
        *(.initcall0.init)                                              \
@@ -229,3 +245,11 @@
        *(.initcall7.init)                                              \
        *(.initcall7s.init)
 
+#define PERCPU(align)                                                  \
+       . = ALIGN(align);                                               \
+       __per_cpu_start = .;                                            \
+       .data.percpu  : AT(ADDR(.data.percpu) - LOAD_OFFSET) {          \
+               *(.data.percpu)                                         \
+               *(.data.percpu.shared_aligned)                          \
+       }                                                               \
+       __per_cpu_end = .;