diff options
39 files changed, 234 insertions, 132 deletions
diff --git a/arch/alpha/kernel/vmlinux.lds.S b/arch/alpha/kernel/vmlinux.lds.S index cf1e6fc6c686..449e76f118d3 100644 --- a/arch/alpha/kernel/vmlinux.lds.S +++ b/arch/alpha/kernel/vmlinux.lds.S @@ -15,7 +15,7 @@ SECTIONS _text = .; /* Text and read-only data */ .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -89,7 +89,7 @@ SECTIONS _data = .; .data : { /* Data */ - *(.data) + DATA_DATA CONSTRUCTORS } diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index e4156e7868ce..2b7a8f5d8cf2 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -90,7 +90,7 @@ SECTIONS __exception_text_start = .; *(.exception.text) __exception_text_end = .; - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT #ifdef CONFIG_MMU @@ -158,7 +158,7 @@ SECTIONS /* * and the usual data section */ - *(.data) + DATA_DATA CONSTRUCTORS _edata = .; diff --git a/arch/arm26/kernel/vmlinux-arm26-xip.lds.in b/arch/arm26/kernel/vmlinux-arm26-xip.lds.in index 046a85054018..4ec715c25dea 100644 --- a/arch/arm26/kernel/vmlinux-arm26-xip.lds.in +++ b/arch/arm26/kernel/vmlinux-arm26-xip.lds.in @@ -64,7 +64,7 @@ SECTIONS .text : { /* Real text segment */ _text = .; /* Text and read-only data */ - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT /* FIXME - borrowed from arm32 - check*/ *(.fixup) @@ -111,7 +111,7 @@ SECTIONS /* * and the usual data section */ - *(.data) + DATA_DATA CONSTRUCTORS *(.init.data) diff --git a/arch/arm26/kernel/vmlinux-arm26.lds.in b/arch/arm26/kernel/vmlinux-arm26.lds.in index 1d2949e83be8..6c44f6a17bf7 100644 --- a/arch/arm26/kernel/vmlinux-arm26.lds.in +++ b/arch/arm26/kernel/vmlinux-arm26.lds.in @@ -65,7 +65,7 @@ SECTIONS .text : { /* Real text segment */ _text = .; /* Text and read-only data */ - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -106,7 +106,7 @@ SECTIONS /* * and the usual data section */ - *(.data) + DATA_DATA CONSTRUCTORS _edata = .; diff --git a/arch/avr32/kernel/vmlinux.lds.c b/arch/avr32/kernel/vmlinux.lds.c index e7f72c995a32..db0438f35c00 100644 --- a/arch/avr32/kernel/vmlinux.lds.c +++ b/arch/avr32/kernel/vmlinux.lds.c @@ -76,7 +76,7 @@ SECTIONS . = 0x100; *(.scall.text) *(.irq.text) - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT KPROBES_TEXT @@ -112,7 +112,7 @@ SECTIONS /* And the rest... */ *(.data.rel*) - *(.data) + DATA_DATA CONSTRUCTORS _edata = .; diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S index 6ae9ebbd8e58..86fe67995802 100644 --- a/arch/blackfin/kernel/vmlinux.lds.S +++ b/arch/blackfin/kernel/vmlinux.lds.S @@ -54,7 +54,7 @@ SECTIONS { _text = .; __stext = .; - *(.text) + TEXT_TEXT SCHED_TEXT *(.text.lock) . = ALIGN(16); @@ -200,7 +200,7 @@ SECTIONS __sdata = .; . = ALIGN(0x2000); *(.data.init_task) - *(.data) + DATA_DATA . = ALIGN(32); *(.data.cacheline_aligned) diff --git a/arch/frv/kernel/vmlinux.lds.S b/arch/frv/kernel/vmlinux.lds.S index 28eae9735ad6..481dc1374640 100644 --- a/arch/frv/kernel/vmlinux.lds.S +++ b/arch/frv/kernel/vmlinux.lds.S @@ -101,13 +101,14 @@ SECTIONS _stext = .; .text : { *( - .text.start .text .text.* + .text.start .text.* #ifdef CONFIG_DEBUG_INFO .init.text .exit.text .exitcall.exit #endif ) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -135,7 +136,8 @@ SECTIONS _sdata = .; .data : { /* Data */ - *(.data .data.*) + DATA_DATA + *(.data.*) *(.exit.data) CONSTRUCTORS } diff --git a/arch/h8300/kernel/vmlinux.lds.S b/arch/h8300/kernel/vmlinux.lds.S index 65f1cdc5ee04..a2e72d495551 100644 --- a/arch/h8300/kernel/vmlinux.lds.S +++ b/arch/h8300/kernel/vmlinux.lds.S @@ -75,7 +75,7 @@ SECTIONS *(.int_redirect) #endif __stext = . ; - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT __etext = . ; @@ -103,7 +103,7 @@ SECTIONS . = ALIGN(0x2000) ; *(.data.init_task) . = ALIGN(0x4) ; - *(.data) + DATA_DATA . = ALIGN(0x4) ; *(.data.*) diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S index 80bec6640230..aa87b06c7c82 100644 --- a/arch/i386/kernel/vmlinux.lds.S +++ b/arch/i386/kernel/vmlinux.lds.S @@ -44,7 +44,7 @@ SECTIONS /* read-only */ .text : AT(ADDR(.text) - LOAD_OFFSET) { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT KPROBES_TEXT @@ -74,7 +74,7 @@ SECTIONS /* writeable */ . = ALIGN(4096); .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */ - *(.data) + DATA_DATA CONSTRUCTORS } :data diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S index 692382642118..5a65965c8b53 100644 --- a/arch/ia64/kernel/vmlinux.lds.S +++ b/arch/ia64/kernel/vmlinux.lds.S @@ -44,7 +44,7 @@ SECTIONS .text : AT(ADDR(.text) - LOAD_OFFSET) { IVT_TEXT - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT KPROBES_TEXT @@ -214,7 +214,12 @@ SECTIONS data : { } :data .data : AT(ADDR(.data) - LOAD_OFFSET) - { *(.data) *(.data1) *(.gnu.linkonce.d*) CONSTRUCTORS } + { + DATA_DATA + *(.data1) + *(.gnu.linkonce.d*) + CONSTRUCTORS + } . = ALIGN(16); /* gp must be 16-byte aligned for exc. table */ .got : AT(ADDR(.got) - LOAD_OFFSET) diff --git a/arch/m32r/kernel/vmlinux.lds.S b/arch/m32r/kernel/vmlinux.lds.S index 6c73bca3f478..4e2d5b9f0a9a 100644 --- a/arch/m32r/kernel/vmlinux.lds.S +++ b/arch/m32r/kernel/vmlinux.lds.S @@ -27,7 +27,7 @@ SECTIONS _text = .; /* Text and read-only data */ .boot : { *(.boot) } = 0 .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -50,7 +50,7 @@ SECTIONS .data : { /* Data */ *(.spu) *(.spi) - *(.data) + DATA_DATA CONSTRUCTORS } diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds index 437b4f8d86c5..78f139226a1b 100644 --- a/arch/m68k/kernel/vmlinux-std.lds +++ b/arch/m68k/kernel/vmlinux-std.lds @@ -11,7 +11,7 @@ SECTIONS . = 0x1000; _text = .; /* Text and read-only data */ .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -28,7 +28,7 @@ SECTIONS _etext = .; /* End of text section */ .data : { /* Data */ - *(.data) + DATA_DATA CONSTRUCTORS } diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds index 2868e206fc76..c8999b2db23b 100644 --- a/arch/m68k/kernel/vmlinux-sun3.lds +++ b/arch/m68k/kernel/vmlinux-sun3.lds @@ -12,7 +12,7 @@ SECTIONS _text = .; /* Text and read-only data */ .text : { *(.head) - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -23,7 +23,7 @@ SECTIONS _etext = .; /* End of text section */ .data : { /* Data */ - *(.data) + DATA_DATA CONSTRUCTORS . = ALIGN(16); /* Exception table */ __start___ex_table = .; diff --git a/arch/m68knommu/kernel/vmlinux.lds.S b/arch/m68knommu/kernel/vmlinux.lds.S index c86a1bf589d4..07a0055602f4 100644 --- a/arch/m68knommu/kernel/vmlinux.lds.S +++ b/arch/m68knommu/kernel/vmlinux.lds.S @@ -62,7 +62,7 @@ SECTIONS { .text : { _text = .; _stext = . ; - *(.text) + TEXT_TEXT SCHED_TEXT *(.text.lock) @@ -133,7 +133,7 @@ SECTIONS { .data DATA_ADDR : { . = ALIGN(4); _sdata = . ; - *(.data) + DATA_DATA . = ALIGN(8192) ; *(.data.init_task) _edata = . ; diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 043f637e3d10..9b9992cd562a 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -27,7 +27,7 @@ SECTIONS /* read-only */ _text = .; /* Text and read-only data */ .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -62,7 +62,7 @@ SECTIONS . = ALIGN(_PAGE_SIZE); *(.data.init_task) - *(.data) + DATA_DATA CONSTRUCTORS } diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index c74585990598..4d96ba4b9849 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -51,7 +51,7 @@ SECTIONS _text = .; /* Text and read-only data */ .text ALIGN(16) : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.text.do_softirq) @@ -91,7 +91,7 @@ SECTIONS . = ALIGN(L1_CACHE_BYTES); .data : { /* Data */ - *(.data) + DATA_DATA CONSTRUCTORS } diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 132067313147..f7d7bf19e4fb 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -34,7 +34,8 @@ SECTIONS /* Text and gots */ .text : { _text = .; - *(.text .text.*) + *(.text.*) + TEXT_TEXT SCHED_TEXT LOCK_TEXT KPROBES_TEXT @@ -167,7 +168,7 @@ SECTIONS #ifdef CONFIG_PPC32 .data : { - *(.data) + DATA_DATA *(.sdata) *(.got.plt) *(.got) } diff --git a/arch/ppc/kernel/vmlinux.lds.S b/arch/ppc/kernel/vmlinux.lds.S index 44cd128fb719..19db8746ff14 100644 --- a/arch/ppc/kernel/vmlinux.lds.S +++ b/arch/ppc/kernel/vmlinux.lds.S @@ -32,7 +32,7 @@ SECTIONS .text : { _text = .; - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -67,7 +67,7 @@ SECTIONS . = ALIGN(4096); .data : { - *(.data) + DATA_DATA *(.data1) *(.sdata) *(.sdata2) diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index e9d3432aba60..7158a804a5e4 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -21,7 +21,7 @@ SECTIONS . = 0x00000000; _text = .; /* Text and read-only data */ .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT KPROBES_TEXT @@ -48,7 +48,7 @@ SECTIONS BUG_TABLE .data : { /* Data */ - *(.data) + DATA_DATA CONSTRUCTORS } diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S index d83143cc5ca9..4c5b57e9c3c1 100644 --- a/arch/sh/kernel/vmlinux.lds.S +++ b/arch/sh/kernel/vmlinux.lds.S @@ -22,7 +22,7 @@ SECTIONS *(.empty_zero_page) } = 0 .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -41,7 +41,7 @@ SECTIONS BUG_TABLE .data : { /* Data */ - *(.data) + DATA_DATA /* Align the initial ramdisk image (INITRD) on page boundaries. */ . = ALIGN(PAGE_SIZE); diff --git a/arch/sh64/kernel/vmlinux.lds.S b/arch/sh64/kernel/vmlinux.lds.S index 4f9616f39830..02aea86c5907 100644 --- a/arch/sh64/kernel/vmlinux.lds.S +++ b/arch/sh64/kernel/vmlinux.lds.S @@ -54,7 +54,7 @@ SECTIONS } = 0 .text : C_PHYS(.text) { - *(.text) + TEXT_TEXT *(.text64) *(.text..SHmedia32) SCHED_TEXT @@ -78,7 +78,7 @@ SECTIONS _etext = .; /* End of text section */ .data : C_PHYS(.data) { /* Data */ - *(.data) + DATA_DATA CONSTRUCTORS } diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index f0bb6e60e620..f75a1b822789 100644 --- a/arch/sparc/kernel/vmlinux.lds.S +++ b/arch/sparc/kernel/vmlinux.lds.S @@ -12,7 +12,7 @@ SECTIONS .text 0xf0004000 : { _text = .; - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.gnu.warning) @@ -22,7 +22,7 @@ SECTIONS RODATA .data : { - *(.data) + DATA_DATA CONSTRUCTORS } .data1 : { *(.data1) } diff --git a/arch/sparc64/kernel/vmlinux.lds.S b/arch/sparc64/kernel/vmlinux.lds.S index 13fa2a2e4513..fb648de18a8d 100644 --- a/arch/sparc64/kernel/vmlinux.lds.S +++ b/arch/sparc64/kernel/vmlinux.lds.S @@ -14,7 +14,7 @@ SECTIONS .text 0x0000000000404000 : { _text = .; - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT KPROBES_TEXT @@ -27,7 +27,7 @@ SECTIONS .data : { - *(.data) + DATA_DATA CONSTRUCTORS } .data1 : { *(.data1) } diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S index 87a4e4427d8d..24547741b205 100644 --- a/arch/um/kernel/dyn.lds.S +++ b/arch/um/kernel/dyn.lds.S @@ -62,7 +62,7 @@ SECTIONS } =0x90909090 .plt : { *(.plt) } .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -99,7 +99,8 @@ SECTIONS *(.data.init_task) . = ALIGN(KERNEL_STACK_SIZE); *(.data.init_irqstack) - *(.data .data.* .gnu.linkonce.d.*) + DATA_DATA + *(.data.* .gnu.linkonce.d.*) SORT(CONSTRUCTORS) } .data1 : { *(.data1) } diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S index bc59f97e34d0..307b9373676b 100644 --- a/arch/um/kernel/uml.lds.S +++ b/arch/um/kernel/uml.lds.S @@ -37,7 +37,7 @@ SECTIONS .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -61,7 +61,7 @@ SECTIONS *(.data.init_task) . = ALIGN(KERNEL_STACK_SIZE); *(.data.init_irqstack) - *(.data) + DATA_DATA *(.gnu.linkonce.d*) CONSTRUCTORS } diff --git a/arch/v850/kernel/vmlinux.lds.S b/arch/v850/kernel/vmlinux.lds.S index 356308221251..6172599b4ce2 100644 --- a/arch/v850/kernel/vmlinux.lds.S +++ b/arch/v850/kernel/vmlinux.lds.S @@ -92,7 +92,7 @@ #define TEXT_CONTENTS \ _text = .; \ __stext = . ; \ - *(.text) \ + TEXT_TEXT \ SCHED_TEXT \ *(.exit.text) /* 2.5 convention */ \ *(.text.exit) /* 2.4 convention */ \ @@ -113,7 +113,7 @@ /* Kernel data segment. */ #define DATA_CONTENTS \ __sdata = . ; \ - *(.data) \ + DATA_DATA \ *(.exit.data) /* 2.5 convention */ \ *(.data.exit) /* 2.4 convention */ \ . = ALIGN (16) ; \ diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S index 88cfa50b424d..dbccfda8364f 100644 --- a/arch/x86_64/kernel/vmlinux.lds.S +++ b/arch/x86_64/kernel/vmlinux.lds.S @@ -31,7 +31,7 @@ SECTIONS *(.bootstrap.text) _stext = .; /* Then the rest */ - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT KPROBES_TEXT @@ -55,7 +55,7 @@ SECTIONS . = ALIGN(PAGE_SIZE); /* Align data segment to page size boundary */ /* Data */ .data : AT(ADDR(.data) - LOAD_OFFSET) { - *(.data) + DATA_DATA CONSTRUCTORS } :data diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S index 4fbd66a52a88..4b7b4ff79973 100644 --- a/arch/xtensa/kernel/vmlinux.lds.S +++ b/arch/xtensa/kernel/vmlinux.lds.S @@ -84,7 +84,8 @@ SECTIONS { /* The .head.text section must be the first section! */ *(.head.text) - *(.literal .text) + *(.literal) + TEXT_TEXT *(.srom.text) VMLINUX_SYMBOL(__sched_text_start) = .; *(.sched.literal .sched.text) @@ -144,7 +145,8 @@ SECTIONS _fdata = .; .data : { - *(.data) CONSTRUCTORS + DATA_DATA + CONSTRUCTORS . = ALIGN(XCHAL_ICACHE_LINESIZE); *(.data.cacheline_aligned) } diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index f3806a74c478..8307b1bb337a 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -9,6 +9,11 @@ /* Align . to a 8 byte boundary equals to maximum function alignment. */ #define ALIGN_FUNCTION() . = ALIGN(8) +/* .data section */ +#define DATA_DATA \ + *(.data) \ + *(.data.init.refok) + #define RODATA \ . = ALIGN(4096); \ .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ @@ -139,6 +144,13 @@ VMLINUX_SYMBOL(__security_initcall_end) = .; \ } +/* .text section. Map to function alignment to avoid address changes + * during second ld run in second ld pass when generating System.map */ +#define TEXT_TEXT \ + ALIGN_FUNCTION(); \ + *(.text) \ + *(.text.init.refok) + /* sched.text is aling to function alignment to secure we have same * address even at second ld pass when generating System.map */ #define SCHED_TEXT \ diff --git a/include/linux/init.h b/include/linux/init.h index e007ae4dc41e..56ec4c62eee0 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -45,6 +45,19 @@ #define __exitdata __attribute__ ((__section__(".exit.data"))) #define __exit_call __attribute_used__ __attribute__ ((__section__ (".exitcall.exit"))) +/* modpost check for section mismatches during the kernel build. + * A section mismatch happens when there are references from a + * code or data section to an init section (both code or data). + * The init sections are (for most archs) discarded by the kernel + * when early init has completed so all such references are potential bugs. + * For exit sections the same issue exists. + * The following markers are used for the cases where the reference to + * the init/exit section (code or data) is valid and will teach modpost + * not to issue a warning. + * The markers follow same syntax rules as __init / __initdata. */ +#define __init_refok noinline __attribute__ ((__section__ (".text.init.refok"))) +#define __initdata_refok __attribute__ ((__section__ (".data.init.refok"))) + #ifdef MODULE #define __exit __attribute__ ((__section__(".exit.text"))) #else diff --git a/init/main.c b/init/main.c index 1940fa75e82e..eb8bdbae4fc7 100644 --- a/init/main.c +++ b/init/main.c @@ -423,7 +423,7 @@ static void __init setup_command_line(char *command_line) * gcc-3.4 accidentally inlines this function, so use noinline. */ -static void noinline rest_init(void) +static void noinline __init_refok rest_init(void) __releases(kernel_lock) { int pid; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ae96dd844432..8b000d6803c2 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2165,7 +2165,7 @@ void __init setup_per_cpu_pageset(void) #endif -static __meminit noinline +static noinline __init_refok int zone_wait_table_init(struct zone *zone, unsigned long zone_size_pages) { int i; @@ -2678,7 +2678,7 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat, } } -static void __meminit alloc_node_mem_map(struct pglist_data *pgdat) +static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat) { /* Skip empty nodes */ if (!pgdat->node_spanned_pages) diff --git a/mm/slab.c b/mm/slab.c index 528243e15cc8..2e71a328aa09 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2037,7 +2037,7 @@ static size_t calculate_slab_order(struct kmem_cache *cachep, return left_over; } -static int setup_cpu_cache(struct kmem_cache *cachep) +static int __init_refok setup_cpu_cache(struct kmem_cache *cachep) { if (g_cpucache_up == FULL) return enable_cpucache(cachep); diff --git a/mm/sparse.c b/mm/sparse.c index 6f3fff907bc2..1302f8348d51 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -44,7 +44,7 @@ EXPORT_SYMBOL(page_to_nid); #endif #ifdef CONFIG_SPARSEMEM_EXTREME -static struct mem_section noinline *sparse_index_alloc(int nid) +static struct mem_section noinline __init_refok *sparse_index_alloc(int nid) { struct mem_section *section = NULL; unsigned long array_size = SECTIONS_PER_ROOT * diff --git a/scripts/kconfig/lxdialog/check-lxdialog.sh b/scripts/kconfig/lxdialog/check-lxdialog.sh index 120d624e672c..cdca7388e0f1 100644 --- a/scripts/kconfig/lxdialog/check-lxdialog.sh +++ b/scripts/kconfig/lxdialog/check-lxdialog.sh @@ -4,21 +4,15 @@ # What library to link ldflags() { - $cc -print-file-name=libncursesw.so | grep -q / - if [ $? -eq 0 ]; then - echo '-lncursesw' - exit - fi - $cc -print-file-name=libncurses.so | grep -q / - if [ $? -eq 0 ]; then - echo '-lncurses' - exit - fi - $cc -print-file-name=libcurses.so | grep -q / - if [ $? -eq 0 ]; then - echo '-lcurses' - exit - fi + for ext in so a dylib ; do + for lib in ncursesw ncurses curses ; do + $cc -print-file-name=lib${lib}.${ext} | grep -q / + if [ $? -eq 0 ]; then + echo "-l${lib}" + exit + fi + done + done exit 1 } diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index ed1244dd58d0..f646381dc015 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -353,11 +353,16 @@ static int do_pcmcia_entry(const char *filename, static int do_of_entry (const char *filename, struct of_device_id *of, char *alias) { + int len; char *tmp; - sprintf (alias, "of:N%sT%sC%s", + len = sprintf (alias, "of:N%sT%s", of->name[0] ? of->name : "*", - of->type[0] ? of->type : "*", - of->compatible[0] ? of->compatible : "*"); + of->type[0] ? of->type : "*"); + + if (of->compatible[0]) + sprintf (&alias[len], "%sC%s", + of->type[0] ? "*" : "", + of->compatible); /* Replace all whitespace with underscores */ for (tmp = alias; tmp && *tmp; tmp++) diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 113dc77b9f60..8424d1f53bbe 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -384,6 +384,7 @@ static int parse_elf(struct elf_info *info, const char *filename) sechdrs[i].sh_size = TO_NATIVE(sechdrs[i].sh_size); sechdrs[i].sh_link = TO_NATIVE(sechdrs[i].sh_link); sechdrs[i].sh_name = TO_NATIVE(sechdrs[i].sh_name); + sechdrs[i].sh_info = TO_NATIVE(sechdrs[i].sh_info); } /* Find symbol table. */ for (i = 1; i < hdr->e_shnum; i++) { @@ -582,6 +583,12 @@ static int strrcmp(const char *s, const char *sub) /** * Whitelist to allow certain references to pass with no warning. + * + * Pattern 0: + * Do not warn if funtion/data are marked with __init_refok/__initdata_refok. + * The pattern is identified by: + * fromsec = .text.init.refok | .data.init.refok + * * Pattern 1: * If a module parameter is declared __initdata and permissions=0 * then this is legal despite the warning generated. @@ -619,14 +626,6 @@ static int strrcmp(const char *s, const char *sub) * This pattern is identified by * refsymname = __init_begin, _sinittext, _einittext * - * Pattern 6: - * During the early init phase we have references from .init.text to - * .text we have an intended section mismatch - do not warn about it. - * See kernel_init() in init/main.c - * tosec = .init.text - * fromsec = .text - * atsym = kernel_init - * * Pattern 7: * Logos used in drivers/video/logo reside in __initdata but the * funtion that references them are EXPORT_SYMBOL() so cannot be @@ -642,16 +641,11 @@ static int strrcmp(const char *s, const char *sub) * tosec = .init.text * fromsec = .paravirtprobe * - * Pattern 9: - * Some of functions are common code between boot time and hotplug - * time. The bootmem allocater is called only boot time in its - * functions. So it's ok to reference. - * tosec = .init.text - * * Pattern 10: - * ia64 has machvec table for each platform. It is mixture of function - * pointer of .init.text and .text. - * fromsec = .machvec + * ia64 has machvec table for each platform and + * powerpc has a machine desc table for each platform. + * It is mixture of function pointers of .init.text and .text. + * fromsec = .machvec | .machine.desc **/ static int secref_whitelist(const char *modname, const char *tosec, const char *fromsec, const char *atsym, @@ -678,11 +672,10 @@ static int secref_whitelist(const char *modname, const char *tosec, NULL }; - const char *pat4sym[] = { - "sparse_index_alloc", - "zone_wait_table_init", - NULL - }; + /* Check for pattern 0 */ + if ((strcmp(fromsec, ".text.init.refok") == 0) || + (strcmp(fromsec, ".data.init.refok") == 0)) + return 1; /* Check for pattern 1 */ if (strcmp(tosec, ".init.data") != 0) @@ -725,12 +718,6 @@ static int secref_whitelist(const char *modname, const char *tosec, if (strcmp(refsymname, *s) == 0) return 1; - /* Check for pattern 6 */ - if ((strcmp(tosec, ".init.text") == 0) && - (strcmp(fromsec, ".text") == 0) && - (strcmp(refsymname, "kernel_init") == 0)) - return 1; - /* Check for pattern 7 */ if ((strcmp(tosec, ".init.data") == 0) && (strncmp(fromsec, ".text", strlen(".text")) == 0) && @@ -742,15 +729,9 @@ static int secref_whitelist(const char *modname, const char *tosec, (strcmp(fromsec, ".paravirtprobe") == 0)) return 1; - /* Check for pattern 9 */ - if ((strcmp(tosec, ".init.text") == 0) && - (strcmp(fromsec, ".text") == 0)) - for (s = pat4sym; *s; s++) - if (strcmp(atsym, *s) == 0) - return 1; - /* Check for pattern 10 */ - if (strcmp(fromsec, ".machvec") == 0) + if ((strcmp(fromsec, ".machvec") == 0) || + (strcmp(fromsec, ".machine.desc") == 0)) return 1; return 0; @@ -773,6 +754,8 @@ static Elf_Sym *find_elf_symbol(struct elf_info *elf, Elf_Addr addr, for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) { if (sym->st_shndx != relsym->st_shndx) continue; + if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) + continue; if (sym->st_value == addr) return sym; } @@ -884,33 +867,99 @@ static void warn_sec_mismatch(const char *modname, const char *fromsec, elf->strtab + before->st_name, refsymname)) return; + /* fromsec whitelist - without a valid 'before' + * powerpc has a GOT table in .got2 section */ + if (strcmp(fromsec, ".got2") == 0) + return; + if (before && after) { - warn("%s - Section mismatch: reference to %s:%s from %s " - "between '%s' (at offset 0x%llx) and '%s'\n", - modname, secname, refsymname, fromsec, + warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s " + "(between '%s' and '%s')\n", + modname, fromsec, (unsigned long long)r.r_offset, + secname, refsymname, elf->strtab + before->st_name, - (long long)r.r_offset, elf->strtab + after->st_name); } else if (before) { - warn("%s - Section mismatch: reference to %s:%s from %s " - "after '%s' (at offset 0x%llx)\n", - modname, secname, refsymname, fromsec, - elf->strtab + before->st_name, - (long long)r.r_offset); + warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s " + "(after '%s')\n", + modname, fromsec, (unsigned long long)r.r_offset, + secname, refsymname, + elf->strtab + before->st_name); } else if (after) { - warn("%s - Section mismatch: reference to %s:%s from %s " + warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s " "before '%s' (at offset -0x%llx)\n", - modname, secname, refsymname, fromsec, - elf->strtab + after->st_name, - (long long)r.r_offset); + modname, fromsec, (unsigned long long)r.r_offset, + secname, refsymname, + elf->strtab + after->st_name); } else { - warn("%s - Section mismatch: reference to %s:%s from %s " - "(offset 0x%llx)\n", - modname, secname, fromsec, refsymname, - (long long)r.r_offset); + warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s\n", + modname, fromsec, (unsigned long long)r.r_offset, + secname, refsymname); } } +static void addend_386_rel(struct elf_info *elf, int section, Elf_Rela *r) +{ + Elf_Shdr *sechdrs = elf->sechdrs; + unsigned int r_typ; + unsigned int *location; + + r_typ = ELF_R_TYPE(r->r_info); + location = (void *)elf->hdr + + sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset; + switch (r_typ) { + case R_386_32: + r->r_addend = TO_NATIVE(*location); + break; + case R_386_PC32: + r->r_addend = TO_NATIVE(*location) + 4; + break; + } +} + +static void addend_arm_rel(struct elf_info *elf, int section, Elf_Rela *r) +{ + Elf_Shdr *sechdrs = elf->sechdrs; + unsigned int r_typ; + unsigned int *location; + + r_typ = ELF_R_TYPE(r->r_info); + location = (void *)elf->hdr + + sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset; + switch (r_typ) { + case R_ARM_ABS32: + r->r_addend = TO_NATIVE(*location); + break; + case R_ARM_PC24: + r->r_addend = ((TO_NATIVE(*location) & 0x00ffffff) << 2) + 8; + break; + } +} + +static int addend_mips_rel(struct elf_info *elf, int section, Elf_Rela *r) +{ + Elf_Shdr *sechdrs = elf->sechdrs; + unsigned int r_typ; + unsigned int *location; + unsigned int inst; + + r_typ = ELF_R_TYPE(r->r_info); + if (r_typ == R_MIPS_HI16) + return 1; /* skip this */ + location = (void *)elf->hdr + + sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset; + inst = TO_NATIVE(*location); + switch (r_typ) { + case R_MIPS_LO16: + r->r_addend = ((inst & 0xffff) ^ 0x8000) - 0x8000; + break; + case R_MIPS_26: + r->r_addend = (inst & 0x03ffffff) << 2; + break; + } + return 0; +} + /** * A module includes a number of sections that are discarded * either when loaded or when used as built-in. @@ -954,8 +1003,11 @@ static void check_sec_ref(struct module *mod, const char *modname, r.r_offset = TO_NATIVE(rela->r_offset); #if KERNEL_ELFCLASS == ELFCLASS64 if (hdr->e_machine == EM_MIPS) { + unsigned int r_typ; r_sym = ELF64_MIPS_R_SYM(rela->r_info); r_sym = TO_NATIVE(r_sym); + r_typ = ELF64_MIPS_R_TYPE(rela->r_info); + r.r_info = ELF64_R_INFO(r_sym, r_typ); } else { r.r_info = TO_NATIVE(rela->r_info); r_sym = ELF_R_SYM(r.r_info); @@ -988,8 +1040,11 @@ static void check_sec_ref(struct module *mod, const char *modname, r.r_offset = TO_NATIVE(rel->r_offset); #if KERNEL_ELFCLASS == ELFCLASS64 if (hdr->e_machine == EM_MIPS) { + unsigned int r_typ; r_sym = ELF64_MIPS_R_SYM(rel->r_info); r_sym = TO_NATIVE(r_sym); + r_typ = ELF64_MIPS_R_TYPE(rel->r_info); + r.r_info = ELF64_R_INFO(r_sym, r_typ); } else { r.r_info = TO_NATIVE(rel->r_info); r_sym = ELF_R_SYM(r.r_info); @@ -999,6 +1054,14 @@ static void check_sec_ref(struct module *mod, const char *modname, r_sym = ELF_R_SYM(r.r_info); #endif r.r_addend = 0; + if (hdr->e_machine == EM_386) + addend_386_rel(elf, i, &r); + else if (hdr->e_machine == EM_ARM) + addend_arm_rel(elf, i, &r); + else if (hdr->e_machine == EM_MIPS) { + if (addend_mips_rel(elf, i, &r)) + continue; + } sym = elf->symtab_start + r_sym; /* Skip special sections */ if (sym->st_shndx >= SHN_LORESERVE) diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index 0858caa9c03f..4156dd34c5de 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -60,6 +60,9 @@ typedef union #define ELF64_MIPS_R_SYM(i) \ ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym) +#define ELF64_MIPS_R_TYPE(i) \ + ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1) + #if KERNEL_ELFDATA != HOST_ELFDATA static inline void __endian(const void *src, void *dest, unsigned int size) diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c index 6873d5af80d5..d9cc6901d680 100644 --- a/scripts/mod/sumversion.c +++ b/scripts/mod/sumversion.c @@ -7,6 +7,7 @@ #include <ctype.h> #include <errno.h> #include <string.h> +#include <limits.h> #include "modpost.h" /* |