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|
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -4,6 +4,27 @@
#define LOAD_OFFSET 0
#endif
+#ifndef SYMTAB_KEEP_STR
+#define SYMTAB_KEEP_STR *(__ksymtab_strings.*)
+#define SYMTAB_DISCARD_STR
+#else
+#define SYMTAB_DISCARD_STR *(__ksymtab_strings.*)
+#endif
+
+#ifndef SYMTAB_KEEP
+#define SYMTAB_KEEP *(__ksymtab.*)
+#define SYMTAB_DISCARD
+#else
+#define SYMTAB_DISCARD *(__ksymtab.*)
+#endif
+
+#ifndef SYMTAB_KEEP_GPL
+#define SYMTAB_KEEP_GPL *(__ksymtab_gpl.*)
+#define SYMTAB_DISCARD_GPL
+#else
+#define SYMTAB_DISCARD_GPL *(__ksymtab_gpl.*)
+#endif
+
#ifndef VMLINUX_SYMBOL
#define VMLINUX_SYMBOL(_sym_) _sym_
#endif
@@ -176,35 +197,35 @@
/* Kernel symbol table: Normal symbols */ \
__ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start___ksymtab) = .; \
- *(__ksymtab) \
+ SYMTAB_KEEP \
VMLINUX_SYMBOL(__stop___ksymtab) = .; \
} \
\
/* Kernel symbol table: GPL-only symbols */ \
__ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
- *(__ksymtab_gpl) \
+ SYMTAB_KEEP_GPL \
VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
} \
\
/* Kernel symbol table: Normal unused symbols */ \
__ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
- *(__ksymtab_unused) \
+ *(__ksymtab_unused.*) \
VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
} \
\
/* Kernel symbol table: GPL-only unused symbols */ \
__ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
- *(__ksymtab_unused_gpl) \
+ *(__ksymtab_unused_gpl.*) \
VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
} \
\
/* Kernel symbol table: GPL-future-only symbols */ \
__ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
- *(__ksymtab_gpl_future) \
+ *(__ksymtab_gpl_future.*) \
VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
} \
\
@@ -245,7 +266,13 @@
\
/* Kernel symbol table: strings */ \
__ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
- *(__ksymtab_strings) \
+ SYMTAB_KEEP_STR \
+ } \
+ \
+ /DISCARD/ : { \
+ SYMTAB_DISCARD \
+ SYMTAB_DISCARD_GPL \
+ SYMTAB_DISCARD_STR \
} \
\
/* __*init sections */ \
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -187,16 +187,24 @@ void *__symbol_get_gpl(const char *symbo
#define __CRC_SYMBOL(sym, sec)
#endif
+#ifdef MODULE
+#define __EXPORT_SUFFIX(sym)
+#else
+#define __EXPORT_SUFFIX(sym) "." #sym
+#endif
+
/* For every exported symbol, place a struct in the __ksymtab section */
#define __EXPORT_SYMBOL(sym, sec) \
extern typeof(sym) sym; \
__CRC_SYMBOL(sym, sec) \
static const char __kstrtab_##sym[] \
- __attribute__((section("__ksymtab_strings"), aligned(1))) \
+ __attribute__((section("__ksymtab_strings" \
+ __EXPORT_SUFFIX(sym)), aligned(1))) \
= MODULE_SYMBOL_PREFIX #sym; \
static const struct kernel_symbol __ksymtab_##sym \
__used \
- __attribute__((section("__ksymtab" sec), unused)) \
+ __attribute__((section("__ksymtab" sec \
+ __EXPORT_SUFFIX(sym)), unused)) \
= { (unsigned long)&sym, __kstrtab_##sym }
#define EXPORT_SYMBOL(sym) \
--- a/Makefile
+++ b/Makefile
@@ -994,7 +994,7 @@ prepare: prepare0
# Leave this as default for preprocessing vmlinux.lds.S, which is now
# done in arch/$(ARCH)/kernel/Makefile
-export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
+export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) $(EXTRA_LDSFLAGS)
# The asm symlink changes when $(ARCH) changes.
# Detect this and ask user to run make mrproper
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -78,18 +78,6 @@ SECTIONS
#endif
}
- /DISCARD/ : { /* Exit code and data */
- EXIT_TEXT
- EXIT_DATA
- *(.exitcall.exit)
- *(.ARM.exidx.exit.text)
- *(.ARM.extab.exit.text)
-#ifndef CONFIG_MMU
- *(.fixup)
- *(__ex_table)
-#endif
- }
-
.text : { /* Real text segment */
_text = .; /* Text and read-only data */
__exception_text_start = .;
@@ -194,6 +182,20 @@ SECTIONS
*(COMMON)
_end = .;
}
+
+ /DISCARD/ : { /* Exit code and data */
+ EXIT_TEXT
+ EXIT_DATA
+ *(.discard)
+ *(.exitcall.exit)
+ *(.ARM.exidx.exit.text)
+ *(.ARM.extab.exit.text)
+#ifndef CONFIG_MMU
+ *(.fixup)
+ *(__ex_table)
+#endif
+ }
+
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -37,12 +37,6 @@ jiffies = jiffies_64 + 4;
#endif
SECTIONS
{
- /* Sections to be discarded. */
- /DISCARD/ : {
- *(.exitcall.exit)
- EXIT_DATA
- }
-
. = KERNELBASE;
/*
@@ -295,6 +289,12 @@ SECTIONS
__bss_stop = .;
}
+ /* Sections to be discarded. */
+ /DISCARD/ : {
+ *(.exitcall.exit)
+ EXIT_DATA
+ }
+
. = ALIGN(PAGE_SIZE);
_end = . ;
PROVIDE32 (end = .);
|
