mirror of
https://github.com/torvalds/linux.git
synced 2024-11-06 03:51:48 +00:00
b3438f8266
This is a quick hack to overcome the fact that SRCU currently does not
allow static initializers, and we need to sometimes initialize those
things before any other initializers (even "core" ones) can do so.
Currently we don't allow this at all for modules, and the only user that
needs is right now is cpufreq. As reported by Thomas Gleixner:
"Commit b4dfdbb3c7 ("[PATCH] cpufreq:
make the transition_notifier chain use SRCU breaks cpu frequency
notification users, which register the callback > on core_init
level."
Cc: Thomas Gleixner <tglx@timesys.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Andrew Morton <akpm@osdl.org>,
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
235 lines
7.8 KiB
C
235 lines
7.8 KiB
C
#ifndef LOAD_OFFSET
|
|
#define LOAD_OFFSET 0
|
|
#endif
|
|
|
|
#ifndef VMLINUX_SYMBOL
|
|
#define VMLINUX_SYMBOL(_sym_) _sym_
|
|
#endif
|
|
|
|
/* Align . to a 8 byte boundary equals to maximum function alignment. */
|
|
#define ALIGN_FUNCTION() . = ALIGN(8)
|
|
|
|
#define RODATA \
|
|
. = ALIGN(4096); \
|
|
__start_rodata = .; \
|
|
.rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
|
|
*(.rodata) *(.rodata.*) \
|
|
*(__vermagic) /* Kernel version magic */ \
|
|
} \
|
|
\
|
|
.rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
|
|
*(.rodata1) \
|
|
} \
|
|
\
|
|
/* PCI quirks */ \
|
|
.pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
|
|
*(.pci_fixup_early) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
|
|
*(.pci_fixup_header) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
|
|
*(.pci_fixup_final) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
|
|
*(.pci_fixup_enable) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
|
|
} \
|
|
\
|
|
/* RapidIO route ops */ \
|
|
.rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
|
|
*(.rio_route_ops) \
|
|
VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal symbols */ \
|
|
__ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab) = .; \
|
|
*(__ksymtab) \
|
|
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) \
|
|
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) \
|
|
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) \
|
|
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) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal symbols */ \
|
|
__kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab) = .; \
|
|
*(__kcrctab) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only symbols */ \
|
|
__kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
|
|
*(__kcrctab_gpl) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal unused symbols */ \
|
|
__kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
|
|
*(__kcrctab_unused) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only unused symbols */ \
|
|
__kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
|
|
*(__kcrctab_unused_gpl) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-future-only symbols */ \
|
|
__kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
|
|
*(__kcrctab_gpl_future) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: strings */ \
|
|
__ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
|
|
*(__ksymtab_strings) \
|
|
} \
|
|
\
|
|
/* Built-in module parameters. */ \
|
|
__param : AT(ADDR(__param) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___param) = .; \
|
|
*(__param) \
|
|
VMLINUX_SYMBOL(__stop___param) = .; \
|
|
} \
|
|
\
|
|
/* Unwind data binary search table */ \
|
|
EH_FRAME_HDR \
|
|
\
|
|
__end_rodata = .; \
|
|
. = ALIGN(4096);
|
|
|
|
#define SECURITY_INIT \
|
|
.security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__security_initcall_start) = .; \
|
|
*(.security_initcall.init) \
|
|
VMLINUX_SYMBOL(__security_initcall_end) = .; \
|
|
}
|
|
|
|
/* 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 \
|
|
ALIGN_FUNCTION(); \
|
|
VMLINUX_SYMBOL(__sched_text_start) = .; \
|
|
*(.sched.text) \
|
|
VMLINUX_SYMBOL(__sched_text_end) = .;
|
|
|
|
/* spinlock.text is aling to function alignment to secure we have same
|
|
* address even at second ld pass when generating System.map */
|
|
#define LOCK_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
VMLINUX_SYMBOL(__lock_text_start) = .; \
|
|
*(.spinlock.text) \
|
|
VMLINUX_SYMBOL(__lock_text_end) = .;
|
|
|
|
#define KPROBES_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
VMLINUX_SYMBOL(__kprobes_text_start) = .; \
|
|
*(.kprobes.text) \
|
|
VMLINUX_SYMBOL(__kprobes_text_end) = .;
|
|
|
|
#ifdef CONFIG_STACK_UNWIND
|
|
/* Unwind data binary search table */
|
|
#define EH_FRAME_HDR \
|
|
.eh_frame_hdr : AT(ADDR(.eh_frame_hdr) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_unwind_hdr) = .; \
|
|
*(.eh_frame_hdr) \
|
|
VMLINUX_SYMBOL(__end_unwind_hdr) = .; \
|
|
}
|
|
#else
|
|
#define EH_FRAME_HDR
|
|
#endif
|
|
|
|
/* DWARF debug sections.
|
|
Symbols in the DWARF debugging sections are relative to
|
|
the beginning of the section so we begin them at 0. */
|
|
#define DWARF_DEBUG \
|
|
/* DWARF 1 */ \
|
|
.debug 0 : { *(.debug) } \
|
|
.line 0 : { *(.line) } \
|
|
/* GNU DWARF 1 extensions */ \
|
|
.debug_srcinfo 0 : { *(.debug_srcinfo) } \
|
|
.debug_sfnames 0 : { *(.debug_sfnames) } \
|
|
/* DWARF 1.1 and DWARF 2 */ \
|
|
.debug_aranges 0 : { *(.debug_aranges) } \
|
|
.debug_pubnames 0 : { *(.debug_pubnames) } \
|
|
/* DWARF 2 */ \
|
|
.debug_info 0 : { *(.debug_info \
|
|
.gnu.linkonce.wi.*) } \
|
|
.debug_abbrev 0 : { *(.debug_abbrev) } \
|
|
.debug_line 0 : { *(.debug_line) } \
|
|
.debug_frame 0 : { *(.debug_frame) } \
|
|
.debug_str 0 : { *(.debug_str) } \
|
|
.debug_loc 0 : { *(.debug_loc) } \
|
|
.debug_macinfo 0 : { *(.debug_macinfo) } \
|
|
/* SGI/MIPS DWARF 2 extensions */ \
|
|
.debug_weaknames 0 : { *(.debug_weaknames) } \
|
|
.debug_funcnames 0 : { *(.debug_funcnames) } \
|
|
.debug_typenames 0 : { *(.debug_typenames) } \
|
|
.debug_varnames 0 : { *(.debug_varnames) } \
|
|
|
|
/* Stabs debugging sections. */
|
|
#define STABS_DEBUG \
|
|
.stab 0 : { *(.stab) } \
|
|
.stabstr 0 : { *(.stabstr) } \
|
|
.stab.excl 0 : { *(.stab.excl) } \
|
|
.stab.exclstr 0 : { *(.stab.exclstr) } \
|
|
.stab.index 0 : { *(.stab.index) } \
|
|
.stab.indexstr 0 : { *(.stab.indexstr) } \
|
|
.comment 0 : { *(.comment) }
|
|
|
|
#define NOTES \
|
|
.notes : { *(.note.*) } :note
|
|
|
|
#define INITCALLS \
|
|
*(.initcall0.init) \
|
|
*(.initcall0s.init) \
|
|
*(.initcall1.init) \
|
|
*(.initcall1s.init) \
|
|
*(.initcall2.init) \
|
|
*(.initcall2s.init) \
|
|
*(.initcall3.init) \
|
|
*(.initcall3s.init) \
|
|
*(.initcall4.init) \
|
|
*(.initcall4s.init) \
|
|
*(.initcall5.init) \
|
|
*(.initcall5s.init) \
|
|
*(.initcall6.init) \
|
|
*(.initcall6s.init) \
|
|
*(.initcall7.init) \
|
|
*(.initcall7s.init)
|
|
|