forked from Minki/linux
45b797492a
Impact: clean up to make one profiler of like and unlikely tracer The likely and unlikely profiler prints out the file and line numbers of the annotated branches that it is profiling. It shows the number of times it was correct or incorrect in its guess. Having two different files or sections for that matter to tell us if it was a likely or unlikely is pretty pointless. We really only care if it was correct or not. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
423 lines
13 KiB
C
423 lines
13 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)
|
|
|
|
/* 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)
|
|
#define MEM_KEEP(sec) *(.mem##sec)
|
|
#define MEM_DISCARD(sec)
|
|
#else
|
|
#define MEM_KEEP(sec)
|
|
#define MEM_DISCARD(sec) *(.mem##sec)
|
|
#endif
|
|
|
|
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
|
|
#define MCOUNT_REC() VMLINUX_SYMBOL(__start_mcount_loc) = .; \
|
|
*(__mcount_loc) \
|
|
VMLINUX_SYMBOL(__stop_mcount_loc) = .;
|
|
#else
|
|
#define MCOUNT_REC()
|
|
#endif
|
|
|
|
#ifdef CONFIG_TRACE_BRANCH_PROFILING
|
|
#define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
|
|
*(_ftrace_annotated_branch) \
|
|
VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
|
|
#else
|
|
#define LIKELY_PROFILE()
|
|
#endif
|
|
|
|
/* .data section */
|
|
#define DATA_DATA \
|
|
*(.data) \
|
|
*(.data.init.refok) \
|
|
*(.ref.data) \
|
|
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) \
|
|
VMLINUX_SYMBOL(__stop___markers) = .; \
|
|
. = ALIGN(32); \
|
|
VMLINUX_SYMBOL(__start___tracepoints) = .; \
|
|
*(__tracepoints) \
|
|
VMLINUX_SYMBOL(__stop___tracepoints) = .; \
|
|
LIKELY_PROFILE()
|
|
|
|
#define RO_DATA(align) \
|
|
. = ALIGN((align)); \
|
|
.rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_rodata) = .; \
|
|
*(.rodata) *(.rodata.*) \
|
|
*(__vermagic) /* Kernel version magic */ \
|
|
*(__markers_strings) /* Markers: strings */ \
|
|
*(__tracepoints_strings)/* Tracepoints: strings */ \
|
|
} \
|
|
\
|
|
.rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
|
|
*(.rodata1) \
|
|
} \
|
|
\
|
|
BUG_TABLE \
|
|
\
|
|
/* 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) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
|
|
*(.pci_fixup_resume) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
|
|
*(.pci_fixup_resume_early) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
|
|
*(.pci_fixup_suspend) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
|
|
} \
|
|
\
|
|
/* Built-in firmware blobs */ \
|
|
.builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_builtin_fw) = .; \
|
|
*(.builtin_fw) \
|
|
VMLINUX_SYMBOL(__end_builtin_fw) = .; \
|
|
} \
|
|
\
|
|
/* 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) = .; \
|
|
} \
|
|
\
|
|
TRACEDATA \
|
|
\
|
|
/* 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) \
|
|
} \
|
|
\
|
|
/* __*init sections */ \
|
|
__init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
|
|
*(.ref.rodata) \
|
|
MCOUNT_REC() \
|
|
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) = .; \
|
|
*(__param) \
|
|
VMLINUX_SYMBOL(__stop___param) = .; \
|
|
. = ALIGN((align)); \
|
|
VMLINUX_SYMBOL(__end_rodata) = .; \
|
|
} \
|
|
. = ALIGN((align));
|
|
|
|
/* RODATA provided for backward compatibility.
|
|
* All archs are supposed to use RO_DATA() */
|
|
#define RODATA RO_DATA(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) = .; \
|
|
}
|
|
|
|
/* .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.hot) \
|
|
*(.text) \
|
|
*(.ref.text) \
|
|
*(.text.init.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) \
|
|
*(.text.unlikely)
|
|
|
|
|
|
/* 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) = .;
|
|
|
|
/* Section used for early init (in .S files) */
|
|
#define HEAD_TEXT *(.head.text)
|
|
|
|
/* init and exit section handling */
|
|
#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) \
|
|
/* implement dynamic printk debug */ \
|
|
VMLINUX_SYMBOL(__start___verbose_strings) = .; \
|
|
*(__verbose_strings) \
|
|
VMLINUX_SYMBOL(__stop___verbose_strings) = .; \
|
|
. = ALIGN(8); \
|
|
VMLINUX_SYMBOL(__start___verbose) = .; \
|
|
*(__verbose) \
|
|
VMLINUX_SYMBOL(__stop___verbose) = .;
|
|
|
|
#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
|
|
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) }
|
|
|
|
#ifdef CONFIG_GENERIC_BUG
|
|
#define BUG_TABLE \
|
|
. = ALIGN(8); \
|
|
__bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___bug_table) = .; \
|
|
*(__bug_table) \
|
|
VMLINUX_SYMBOL(__stop___bug_table) = .; \
|
|
}
|
|
#else
|
|
#define BUG_TABLE
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_TRACE
|
|
#define TRACEDATA \
|
|
. = ALIGN(4); \
|
|
.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__tracedata_start) = .; \
|
|
*(.tracedata) \
|
|
VMLINUX_SYMBOL(__tracedata_end) = .; \
|
|
}
|
|
#else
|
|
#define TRACEDATA
|
|
#endif
|
|
|
|
#define NOTES \
|
|
.notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_notes) = .; \
|
|
*(.note.*) \
|
|
VMLINUX_SYMBOL(__stop_notes) = .; \
|
|
}
|
|
|
|
#define INITCALLS \
|
|
*(.initcallearly.init) \
|
|
VMLINUX_SYMBOL(__early_initcall_end) = .; \
|
|
*(.initcall0.init) \
|
|
*(.initcall0s.init) \
|
|
*(.initcall1.init) \
|
|
*(.initcall1s.init) \
|
|
*(.initcall2.init) \
|
|
*(.initcall2s.init) \
|
|
*(.initcall3.init) \
|
|
*(.initcall3s.init) \
|
|
*(.initcall4.init) \
|
|
*(.initcall4s.init) \
|
|
*(.initcall5.init) \
|
|
*(.initcall5s.init) \
|
|
*(.initcallrootfs.init) \
|
|
*(.initcall6.init) \
|
|
*(.initcall6s.init) \
|
|
*(.initcall7.init) \
|
|
*(.initcall7s.init)
|
|
|
|
#define PERCPU(align) \
|
|
. = ALIGN(align); \
|
|
VMLINUX_SYMBOL(__per_cpu_start) = .; \
|
|
.data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
|
|
*(.data.percpu.page_aligned) \
|
|
*(.data.percpu) \
|
|
*(.data.percpu.shared_aligned) \
|
|
} \
|
|
VMLINUX_SYMBOL(__per_cpu_end) = .;
|