On Mon, Jan 21, 2008 at 04:33:41PM +0900, Paul Mundt wrote:

On Sun, Jan 20, 2008 at 09:09:03PM +0100, Sam Ravnborg wrote:

quoted

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index ded7ca2..e0a56fb 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h

@@ -9,10 +9,46 @@
 /* Align . to a 8 byte boundary equals to maximum function alignment. */
 #define ALIGN_FUNCTION()  . = ALIGN(8)
 
+/* The actual configuration determine if the init/exit sections
+ * are handled as text/data or they can be discarded (which
+ * often happens at runtime)
+ */
+#ifdef CONFIG_HOTPLUG
+#define DEV_KEEP(sec)    *(.dev##sec)
+#define DEV_DISCARD(sec)
+#else
+#define DEV_KEEP(sec)
+#define DEV_DISCARD(sec) *(.dev##sec)
+#endif
+

Using your kbuild.git, these blow up for me:

  LD      .tmp_vmlinux1
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:381: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:381: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:381: ignoring invalid character `#' in script
...

This comes out as:

        .text : {
                *(.text.head)
                . = ALIGN(8);                                                   *(.text)                                                                *(.text.init.refok)                                                     *(.exit.text.refok)                                             *(.dev##init.text)
                                        *(.dev##exit.text)

                . = ALIGN(8);                                                   __sched_text_start = .;                                 *(.sched.text)
                                                __sched_text_end = .;
                . = ALIGN(8);                                                   __lock_text_start = .;                                  *(.spinlock.text)
                                                __lock_text_end = .;
                . = ALIGN(8);                                                   __kprobes_text_start = .;                               *(.kprobes.text)
                                                __kprobes_text_end = .;
                *(.fixup)
                *(.gnu.warning)
...

so the ## is being taken directly rather than acting as a concatenation.

Strange...
I can reproduce with gcc 3.4.5 here - will fix.

Setting CONFIG_HOTPLUG=n for sparc64 also cause troubles. Something with local symbols discarded.
So more work is needed.

	Sam