On Thu, Mar 10, 2005 at 12:12:22PM +0000, Paulo Marques wrote:
> Paulo Marques wrote:
> >[...]
> >A simple and robust way is to do the sampling on a list of symbols
> >sorted by symbol name. This way, even if the symbol positions that are
> >given to scripts/kallsyms change, the symbols sampled will be the same.
> >
> >I'll do the patch to do this and send it ASAP.
>
> Ok, here it is.
>
> Dominik can you try the attached patch and see if it solves the problem?
Hi Paulo.
Alexander Stohr had similar problems with down and __sched_text_start.
I figured out that what was causing the troubles was the fact that the
linker generated symbol __sched_text_start changed value from pass 1 to
pass 2. The reason for this was the alingment used within that section.
My stamp on this is attached.
I never came around submitting this since I do not know what the correct
number for function alignment is on different paltforms.
Sam
===== include/asm-generic/vmlinux.lds.h 1.16 vs edited =====
--- 1.16/include/asm-generic/vmlinux.lds.h 2004-10-06 18:45:06 +02:00
+++ edited/include/asm-generic/vmlinux.lds.h 2004-11-06 21:56:11 +01:00
@@ -6,6 +6,11 @@
#define VMLINUX_SYMBOL(_sym_) _sym_
#endif
+/* Aling functions to a 8 byte boundary.
+ * This prevents lables defined to mark start/end of section to differ
+ * during pass 1 and pass 2 when generating System.map */
+#define ALIGN_FUNCTION() . = ALIGN(8)
+
#define RODATA \
.rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
*(.rodata) *(.rodata.*) \
@@ -77,11 +82,13 @@
}
#define SCHED_TEXT \
+ ALIGN_FUNCTION(); \
VMLINUX_SYMBOL(__sched_text_start) = .; \
*(.sched.text) \
VMLINUX_SYMBOL(__sched_text_end) = .;
#define LOCK_TEXT \
+ ALIGN_FUNCTION(); \
VMLINUX_SYMBOL(__lock_text_start) = .; \
*(.spinlock.text) \
VMLINUX_SYMBOL(__lock_text_end) = .;
-
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