percpu: Unify input section names

The two percpu helper macros have the section names duplicated.  So create
a new define to merge the two.  This also allows arches who need to link
things more directly themselves to avoid duplicating the input sections in
their linker script.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 24 insertions, 20 deletions

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 32c45e5fe0ab..bf90fbc6688b 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -688,6 +688,28 @@
         }
 
 /**
+ * PERCPU_INPUT - the percpu input sections
+ * @cacheline: cacheline size
+ *
+ * The core percpu section names and core symbols which do not rely
+ * directly upon load addresses.
+ *
+ * @cacheline is used to align subsections to avoid false cacheline
+ * sharing between subsections for different purposes.
+ */
+#define PERCPU_INPUT(cacheline)                                         \
+        VMLINUX_SYMBOL(__per_cpu_start) = .;                            \
+        *(.data..percpu..first)                                         \
+        . = ALIGN(PAGE_SIZE);                                           \
+        *(.data..percpu..page_aligned)                                  \
+        . = ALIGN(cacheline);                                           \
+        *(.data..percpu..readmostly)                                    \
+        . = ALIGN(cacheline);                                           \
+        *(.data..percpu)                                                \
+        *(.data..percpu..shared_aligned)                                \
+        VMLINUX_SYMBOL(__per_cpu_end) = .;
+
+/**
  * PERCPU_VADDR - define output section for percpu area
  * @cacheline: cacheline size
  * @vaddr: explicit base address (optional)
@@ -715,16 +737,7 @@
         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
         .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)         \
                                 - LOAD_OFFSET) {                        \
-                VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
-                *(.data..percpu..first)                                 \
-                . = ALIGN(PAGE_SIZE);                                   \
-                *(.data..percpu..page_aligned)                          \
-                . = ALIGN(cacheline);                                   \
-                *(.data..percpu..readmostly)                            \
-                . = ALIGN(cacheline);                                   \
-                *(.data..percpu)                                        \
-                *(.data..percpu..shared_aligned)                        \
-                VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
+                PERCPU_INPUT(cacheline)                                 \
         } phdr                                                          \
         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
 
@@ -745,16 +758,7 @@
         . = ALIGN(align);                                               \
         .data..percpu   : AT(ADDR(.data..percpu) - LOAD_OFFSET) {       \
                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
-                VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
-                *(.data..percpu..first)                                 \
-                . = ALIGN(PAGE_SIZE);                                   \
-                *(.data..percpu..page_aligned)                          \
-                . = ALIGN(cacheline);                                   \
-                *(.data..percpu..readmostly)                            \
-                . = ALIGN(cacheline);                                   \
-                *(.data..percpu)                                        \
-                *(.data..percpu..shared_aligned)                        \
-                VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
+                PERCPU_INPUT(cacheline)                                 \
         }