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| author | John Crispin <john@phrozen.org> | 2016-12-25 20:11:34 +0100 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2017-08-05 08:46:36 +0200 |
| commit | 74d00a8c3849c1340efd713eb94b786e304c201f (patch) | |
| tree | de481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/hack-4.9/221-module_exports.patch | |
| parent | de350550ef648d9728351b986b0516fa29465c45 (diff) | |
| download | upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.gz upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.bz2 upstream-74d00a8c3849c1340efd713eb94b786e304c201f.zip | |
kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/hack-4.9/221-module_exports.patch')
| -rw-r--r-- | target/linux/generic/hack-4.9/221-module_exports.patch | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/target/linux/generic/hack-4.9/221-module_exports.patch b/target/linux/generic/hack-4.9/221-module_exports.patch new file mode 100644 index 0000000000..301eb3b2b4 --- /dev/null +++ b/target/linux/generic/hack-4.9/221-module_exports.patch @@ -0,0 +1,110 @@ +From b14784e7883390c20ed3ff904892255404a5914b Mon Sep 17 00:00:00 2001 +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 7 Jul 2017 17:05:53 +0200 +Subject: add an optional config option for stripping all unnecessary symbol exports from the kernel image + +lede-commit: bb5a40c64b7c4f4848509fa0a6625055fc9e66cc +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + include/asm-generic/vmlinux.lds.h | 18 +++++++++++++++--- + include/linux/export.h | 9 ++++++++- + scripts/Makefile.build | 2 +- + 3 files changed, 24 insertions(+), 5 deletions(-) + +diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h +index 83784d9492b1..189b5c7a0758 100644 +--- a/include/asm-generic/vmlinux.lds.h ++++ b/include/asm-generic/vmlinux.lds.h +@@ -54,6 +54,16 @@ + #define LOAD_OFFSET 0 + #endif + ++#ifndef SYMTAB_KEEP ++#define SYMTAB_KEEP KEEP(*(SORT(___ksymtab+*))) ++#define SYMTAB_KEEP_GPL KEEP(*(SORT(___ksymtab_gpl+*))) ++#endif ++ ++#ifndef SYMTAB_DISCARD ++#define SYMTAB_DISCARD ++#define SYMTAB_DISCARD_GPL ++#endif ++ + #include <linux/export.h> + + /* Align . to a 8 byte boundary equals to maximum function alignment. */ +@@ -329,14 +339,14 @@ + /* Kernel symbol table: Normal symbols */ \ + __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ + VMLINUX_SYMBOL(__start___ksymtab) = .; \ +- KEEP(*(SORT(___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) = .; \ +- KEEP(*(SORT(___ksymtab_gpl+*))) \ ++ SYMTAB_KEEP_GPL \ + VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ + } \ + \ +@@ -398,7 +408,7 @@ + \ + /* Kernel symbol table: strings */ \ + __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ +- *(__ksymtab_strings) \ ++ *(__ksymtab_strings+*) \ + } \ + \ + /* __*init sections */ \ +@@ -749,6 +759,8 @@ + EXIT_TEXT \ + EXIT_DATA \ + EXIT_CALL \ ++ SYMTAB_DISCARD \ ++ SYMTAB_DISCARD_GPL \ + *(.discard) \ + *(.discard.*) \ + } +diff --git a/include/linux/export.h b/include/linux/export.h +index 2a0f61fbc731..889331d9643d 100644 +--- a/include/linux/export.h ++++ b/include/linux/export.h +@@ -53,12 +53,19 @@ extern struct module __this_module; + #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))) \ + = VMLINUX_SYMBOL_STR(sym); \ + static const struct kernel_symbol __ksymtab_##sym \ + __used \ +diff --git a/scripts/Makefile.build b/scripts/Makefile.build +index 108d73273788..76a0e450123c 100644 +--- a/scripts/Makefile.build ++++ b/scripts/Makefile.build +@@ -398,7 +398,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $(always) + # Linker scripts preprocessor (.lds.S -> .lds) + # --------------------------------------------------------------------------- + quiet_cmd_cpp_lds_S = LDS $@ +- cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \ ++ cmd_cpp_lds_S = $(CPP) $(EXTRA_LDSFLAGS) $(cpp_flags) -P -C -U$(ARCH) \ + -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< + + $(obj)/%.lds: $(src)/%.lds.S FORCE +-- +2.11.0 + |