diff options
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 88 |
1 files changed, 82 insertions, 6 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index ae0166e83490..e0a56fb8f813 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 + +#ifdef CONFIG_HOTPLUG_CPU +#define CPU_KEEP(sec) *(.cpu##sec) +#define CPU_DISCARD(sec) +#else +#define CPU_KEEP(sec) +#define CPU_DISCARD(sec) *(.cpu##sec) +#endif + +#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \ + || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE) +#define MEM_KEEP(sec) *(.mem##sec) +#define MEM_DISCARD(sec) +#else +#define MEM_KEEP(sec) +#define MEM_DISCARD(sec) *(.mem##sec) +#endif + + /* .data section */ #define DATA_DATA \ *(.data) \ *(.data.init.refok) \ + DEV_KEEP(init.data) \ + DEV_KEEP(exit.data) \ + CPU_KEEP(init.data) \ + CPU_KEEP(exit.data) \ + MEM_KEEP(init.data) \ + MEM_KEEP(exit.data) \ . = ALIGN(8); \ VMLINUX_SYMBOL(__start___markers) = .; \ *(__markers) \ @@ -132,6 +168,16 @@ *(__ksymtab_strings) \ } \ \ + /* __*init sections */ \ + __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ + DEV_KEEP(init.rodata) \ + DEV_KEEP(exit.rodata) \ + CPU_KEEP(init.rodata) \ + CPU_KEEP(exit.rodata) \ + MEM_KEEP(init.rodata) \ + MEM_KEEP(exit.rodata) \ + } \ + \ /* Built-in module parameters. */ \ __param : AT(ADDR(__param) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start___param) = .; \ @@ -139,7 +185,6 @@ VMLINUX_SYMBOL(__stop___param) = .; \ VMLINUX_SYMBOL(__end_rodata) = .; \ } \ - \ . = ALIGN((align)); /* RODATA provided for backward compatibility. @@ -159,7 +204,14 @@ ALIGN_FUNCTION(); \ *(.text) \ *(.text.init.refok) \ - *(.exit.text.refok) + *(.exit.text.refok) \ + DEV_KEEP(init.text) \ + DEV_KEEP(exit.text) \ + CPU_KEEP(init.text) \ + CPU_KEEP(exit.text) \ + MEM_KEEP(init.text) \ + MEM_KEEP(exit.text) + /* sched.text is aling to function alignment to secure we have same * address even at second ld pass when generating System.map */ @@ -184,11 +236,35 @@ VMLINUX_SYMBOL(__kprobes_text_end) = .; /* init and exit section handling */ -#define INIT_TEXT *(.init.text) -#define INIT_DATA *(.init.data) -#define EXIT_TEXT *(.exit.text) -#define EXIT_DATA *(.exit.data) +#define INIT_DATA \ + *(.init.data) \ + DEV_DISCARD(init.data) \ + DEV_DISCARD(init.rodata) \ + CPU_DISCARD(init.data) \ + CPU_DISCARD(init.rodata) \ + MEM_DISCARD(init.data) \ + MEM_DISCARD(init.rodata) + +#define INIT_TEXT \ + *(.init.text) \ + DEV_DISCARD(init.text) \ + CPU_DISCARD(init.text) \ + MEM_DISCARD(init.text) + +#define EXIT_DATA \ + *(.exit.data) \ + DEV_DISCARD(exit.data) \ + DEV_DISCARD(exit.rodata) \ + CPU_DISCARD(exit.data) \ + CPU_DISCARD(exit.rodata) \ + MEM_DISCARD(exit.data) \ + MEM_DISCARD(exit.rodata) +#define EXIT_TEXT \ + *(.exit.text) \ + DEV_DISCARD(exit.text) \ + CPU_DISCARD(exit.text) \ + MEM_DISCARD(exit.text) /* DWARF debug sections. Symbols in the DWARF debugging sections are relative to |