include/asm-generic/vmlinux.lds.h

   1 #ifndef LOAD_OFFSET
   2 #define LOAD_OFFSET 0
   3 #endif
   4
   5 #ifndef VMLINUX_SYMBOL
   6 #define VMLINUX_SYMBOL(_sym_) _sym_
   7 #endif
   8
   9 /* Align . to a 8 byte boundary equals to maximum function alignment. */
  10 #define ALIGN_FUNCTION()  . = ALIGN(8)
  11
  12 /* The actual configuration determine if the init/exit sections
  13  * are handled as text/data or they can be discarded (which
  14  * often happens at runtime)
  15  */
  16 #ifdef CONFIG_HOTPLUG
  17 #define DEV_KEEP(sec)    *(.dev##sec)
  18 #define DEV_DISCARD(sec)
  19 #else
  20 #define DEV_KEEP(sec)
  21 #define DEV_DISCARD(sec) *(.dev##sec)
  22 #endif
  23
  24 #ifdef CONFIG_HOTPLUG_CPU
  25 #define CPU_KEEP(sec)    *(.cpu##sec)
  26 #define CPU_DISCARD(sec)
  27 #else
  28 #define CPU_KEEP(sec)
  29 #define CPU_DISCARD(sec) *(.cpu##sec)
  30 #endif
  31
  32 #if defined(CONFIG_MEMORY_HOTPLUG)
  33 #define MEM_KEEP(sec)    *(.mem##sec)
  34 #define MEM_DISCARD(sec)
  35 #else
  36 #define MEM_KEEP(sec)
  37 #define MEM_DISCARD(sec) *(.mem##sec)
  38 #endif
  39
  40 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
  41 #define MCOUNT_REC()    VMLINUX_SYMBOL(__start_mcount_loc) = .; \
  42                         *(__mcount_loc)                         \
  43                         VMLINUX_SYMBOL(__stop_mcount_loc) = .;
  44 #else
  45 #define MCOUNT_REC()
  46 #endif
  47
  48 #ifdef CONFIG_TRACE_BRANCH_PROFILING
  49 #define LIKELY_PROFILE()        VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
  50                                 *(_ftrace_annotated_branch)                           \
  51                                 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
  52 #else
  53 #define LIKELY_PROFILE()
  54 #endif
  55
  56 #ifdef CONFIG_PROFILE_ALL_BRANCHES
  57 #define BRANCH_PROFILE()        VMLINUX_SYMBOL(__start_branch_profile) = .;   \
  58                                 *(_ftrace_branch)                             \
  59                                 VMLINUX_SYMBOL(__stop_branch_profile) = .;
  60 #else
  61 #define BRANCH_PROFILE()
  62 #endif
  63
  64 #ifdef CONFIG_EVENT_TRACING
  65 #define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
  66                         *(_ftrace_events)                               \
  67                         VMLINUX_SYMBOL(__stop_ftrace_events) = .;
  68 #else
  69 #define FTRACE_EVENTS()
  70 #endif
  71
  72 #ifdef CONFIG_TRACING
  73 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
  74                          *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
  75                          VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
  76 #else
  77 #define TRACE_PRINTKS()
  78 #endif
  79
  80 #ifdef CONFIG_FTRACE_SYSCALLS
  81 #define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
  82                          *(__syscalls_metadata)                         \
  83                          VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
  84 #else
  85 #define TRACE_SYSCALLS()
  86 #endif
  87
  88 /* .data section */
  89 #define DATA_DATA                                                       \
  90         *(.data)                                                        \
  91         *(.data.init.refok)                                             \
  92         *(.ref.data)                                                    \
  93         DEV_KEEP(init.data)                                             \
  94         DEV_KEEP(exit.data)                                             \
  95         CPU_KEEP(init.data)                                             \
  96         CPU_KEEP(exit.data)                                             \
  97         MEM_KEEP(init.data)                                             \
  98         MEM_KEEP(exit.data)                                             \
  99         . = ALIGN(8);                                                   \
 100         VMLINUX_SYMBOL(__start___markers) = .;                          \
 101         *(__markers)                                                    \
 102         VMLINUX_SYMBOL(__stop___markers) = .;                           \
 103         . = ALIGN(32);                                                  \
 104         VMLINUX_SYMBOL(__start___tracepoints) = .;                      \
 105         *(__tracepoints)                                                \
 106         VMLINUX_SYMBOL(__stop___tracepoints) = .;                       \
 107         /* implement dynamic printk debug */                            \
 108         . = ALIGN(8);                                                   \
 109         VMLINUX_SYMBOL(__start___verbose) = .;                          \
 110         *(__verbose)                                                    \
 111         VMLINUX_SYMBOL(__stop___verbose) = .;                           \
 112         LIKELY_PROFILE()                                                \
 113         BRANCH_PROFILE()                                                \
 114         TRACE_PRINTKS()                                                 \
 115         FTRACE_EVENTS()                                                 \
 116         TRACE_SYSCALLS()
 117
 118 #define RO_DATA(align)                                                  \
 119         . = ALIGN((align));                                             \
 120         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
 121                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
 122                 *(.rodata) *(.rodata.*)                                 \
 123                 *(__vermagic)           /* Kernel version magic */      \
 124                 *(__markers_strings)    /* Markers: strings */          \
 125                 *(__tracepoints_strings)/* Tracepoints: strings */      \
 126         }                                                               \
 127                                                                         \
 128         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
 129                 *(.rodata1)                                             \
 130         }                                                               \
 131                                                                         \
 132         BUG_TABLE                                                       \
 133                                                                         \
 134         /* PCI quirks */                                                \
 135         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
 136                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
 137                 *(.pci_fixup_early)                                     \
 138                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
 139                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
 140                 *(.pci_fixup_header)                                    \
 141                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
 142                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
 143                 *(.pci_fixup_final)                                     \
 144                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
 145                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
 146                 *(.pci_fixup_enable)                                    \
 147                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
 148                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
 149                 *(.pci_fixup_resume)                                    \
 150                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
 151                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
 152                 *(.pci_fixup_resume_early)                              \
 153                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
 154                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
 155                 *(.pci_fixup_suspend)                                   \
 156                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
 157         }                                                               \
 158                                                                         \
 159         /* Built-in firmware blobs */                                   \
 160         .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
 161                 VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
 162                 *(.builtin_fw)                                          \
 163                 VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
 164         }                                                               \
 165                                                                         \
 166         /* RapidIO route ops */                                         \
 167         .rio_route        : AT(ADDR(.rio_route) - LOAD_OFFSET) {        \
 168                 VMLINUX_SYMBOL(__start_rio_route_ops) = .;              \
 169                 *(.rio_route_ops)                                       \
 170                 VMLINUX_SYMBOL(__end_rio_route_ops) = .;                \
 171         }                                                               \
 172                                                                         \
 173         TRACEDATA                                                       \
 174                                                                         \
 175         /* Kernel symbol table: Normal symbols */                       \
 176         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
 177                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
 178                 *(__ksymtab)                                            \
 179                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
 180         }                                                               \
 181                                                                         \
 182         /* Kernel symbol table: GPL-only symbols */                     \
 183         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
 184                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
 185                 *(__ksymtab_gpl)                                        \
 186                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
 187         }                                                               \
 188                                                                         \
 189         /* Kernel symbol table: Normal unused symbols */                \
 190         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
 191                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
 192                 *(__ksymtab_unused)                                     \
 193                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
 194         }                                                               \
 195                                                                         \
 196         /* Kernel symbol table: GPL-only unused symbols */              \
 197         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
 198                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
 199                 *(__ksymtab_unused_gpl)                                 \
 200                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
 201         }                                                               \
 202                                                                         \
 203         /* Kernel symbol table: GPL-future-only symbols */              \
 204         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
 205                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
 206                 *(__ksymtab_gpl_future)                                 \
 207                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
 208         }                                                               \
 209                                                                         \
 210         /* Kernel symbol table: Normal symbols */                       \
 211         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
 212                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
 213                 *(__kcrctab)                                            \
 214                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
 215         }                                                               \
 216                                                                         \
 217         /* Kernel symbol table: GPL-only symbols */                     \
 218         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
 219                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
 220                 *(__kcrctab_gpl)                                        \
 221                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
 222         }                                                               \
 223                                                                         \
 224         /* Kernel symbol table: Normal unused symbols */                \
 225         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
 226                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
 227                 *(__kcrctab_unused)                                     \
 228                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
 229         }                                                               \
 230                                                                         \
 231         /* Kernel symbol table: GPL-only unused symbols */              \
 232         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
 233                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
 234                 *(__kcrctab_unused_gpl)                                 \
 235                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
 236         }                                                               \
 237                                                                         \
 238         /* Kernel symbol table: GPL-future-only symbols */              \
 239         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
 240                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
 241                 *(__kcrctab_gpl_future)                                 \
 242                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
 243         }                                                               \
 244                                                                         \
 245         /* Kernel symbol table: strings */                              \
 246         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
 247                 *(__ksymtab_strings)                                    \
 248         }                                                               \
 249                                                                         \
 250         /* __*init sections */                                          \
 251         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
 252                 *(.ref.rodata)                                          \
 253                 MCOUNT_REC()                                            \
 254                 DEV_KEEP(init.rodata)                                   \
 255                 DEV_KEEP(exit.rodata)                                   \
 256                 CPU_KEEP(init.rodata)                                   \
 257                 CPU_KEEP(exit.rodata)                                   \
 258                 MEM_KEEP(init.rodata)                                   \
 259                 MEM_KEEP(exit.rodata)                                   \
 260         }                                                               \
 261                                                                         \
 262         /* Built-in module parameters. */                               \
 263         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
 264                 VMLINUX_SYMBOL(__start___param) = .;                    \
 265                 *(__param)                                              \
 266                 VMLINUX_SYMBOL(__stop___param) = .;                     \
 267                 . = ALIGN((align));                                     \
 268                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
 269         }                                                               \
 270         . = ALIGN((align));
 271
 272 /* RODATA provided for backward compatibility.
 273  * All archs are supposed to use RO_DATA() */
 274 #define RODATA RO_DATA(4096)
 275
 276 #define SECURITY_INIT                                                   \
 277         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
 278                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
 279                 *(.security_initcall.init)                              \
 280                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
 281         }
 282
 283 /* .text section. Map to function alignment to avoid address changes
 284  * during second ld run in second ld pass when generating System.map */
 285 #define TEXT_TEXT                                                       \
 286                 ALIGN_FUNCTION();                                       \
 287                 *(.text.hot)                                            \
 288                 *(.text)                                                \
 289                 *(.ref.text)                                            \
 290                 *(.text.init.refok)                                     \
 291                 *(.exit.text.refok)                                     \
 292         DEV_KEEP(init.text)                                             \
 293         DEV_KEEP(exit.text)                                             \
 294         CPU_KEEP(init.text)                                             \
 295         CPU_KEEP(exit.text)                                             \
 296         MEM_KEEP(init.text)                                             \
 297         MEM_KEEP(exit.text)                                             \
 298                 *(.text.unlikely)
 299
 300
 301 /* sched.text is aling to function alignment to secure we have same
 302  * address even at second ld pass when generating System.map */
 303 #define SCHED_TEXT                                                      \
 304                 ALIGN_FUNCTION();                                       \
 305                 VMLINUX_SYMBOL(__sched_text_start) = .;                 \
 306                 *(.sched.text)                                          \
 307                 VMLINUX_SYMBOL(__sched_text_end) = .;
 308
 309 /* spinlock.text is aling to function alignment to secure we have same
 310  * address even at second ld pass when generating System.map */
 311 #define LOCK_TEXT                                                       \
 312                 ALIGN_FUNCTION();                                       \
 313                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
 314                 *(.spinlock.text)                                       \
 315                 VMLINUX_SYMBOL(__lock_text_end) = .;
 316
 317 #define KPROBES_TEXT                                                    \
 318                 ALIGN_FUNCTION();                                       \
 319                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
 320                 *(.kprobes.text)                                        \
 321                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
 322
 323 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 324 #define IRQENTRY_TEXT                                                   \
 325                 ALIGN_FUNCTION();                                       \
 326                 VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
 327                 *(.irqentry.text)                                       \
 328                 VMLINUX_SYMBOL(__irqentry_text_end) = .;
 329 #else
 330 #define IRQENTRY_TEXT
 331 #endif
 332
 333 /* Section used for early init (in .S files) */
 334 #define HEAD_TEXT  *(.head.text)
 335
 336 /* init and exit section handling */
 337 #define INIT_DATA                                                       \
 338         *(.init.data)                                                   \
 339         DEV_DISCARD(init.data)                                          \
 340         DEV_DISCARD(init.rodata)                                        \
 341         CPU_DISCARD(init.data)                                          \
 342         CPU_DISCARD(init.rodata)                                        \
 343         MEM_DISCARD(init.data)                                          \
 344         MEM_DISCARD(init.rodata)
 345
 346 #define INIT_TEXT                                                       \
 347         *(.init.text)                                                   \
 348         DEV_DISCARD(init.text)                                          \
 349         CPU_DISCARD(init.text)                                          \
 350         MEM_DISCARD(init.text)
 351
 352 #define EXIT_DATA                                                       \
 353         *(.exit.data)                                                   \
 354         DEV_DISCARD(exit.data)                                          \
 355         DEV_DISCARD(exit.rodata)                                        \
 356         CPU_DISCARD(exit.data)                                          \
 357         CPU_DISCARD(exit.rodata)                                        \
 358         MEM_DISCARD(exit.data)                                          \
 359         MEM_DISCARD(exit.rodata)
 360
 361 #define EXIT_TEXT                                                       \
 362         *(.exit.text)                                                   \
 363         DEV_DISCARD(exit.text)                                          \
 364         CPU_DISCARD(exit.text)                                          \
 365         MEM_DISCARD(exit.text)
 366
 367                 /* DWARF debug sections.
 368                 Symbols in the DWARF debugging sections are relative to
 369                 the beginning of the section so we begin them at 0.  */
 370 #define DWARF_DEBUG                                                     \
 371                 /* DWARF 1 */                                           \
 372                 .debug          0 : { *(.debug) }                       \
 373                 .line           0 : { *(.line) }                        \
 374                 /* GNU DWARF 1 extensions */                            \
 375                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
 376                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
 377                 /* DWARF 1.1 and DWARF 2 */                             \
 378                 .debug_aranges  0 : { *(.debug_aranges) }               \
 379                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
 380                 /* DWARF 2 */                                           \
 381                 .debug_info     0 : { *(.debug_info                     \
 382                                 .gnu.linkonce.wi.*) }                   \
 383                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
 384                 .debug_line     0 : { *(.debug_line) }                  \
 385                 .debug_frame    0 : { *(.debug_frame) }                 \
 386                 .debug_str      0 : { *(.debug_str) }                   \
 387                 .debug_loc      0 : { *(.debug_loc) }                   \
 388                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
 389                 /* SGI/MIPS DWARF 2 extensions */                       \
 390                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
 391                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
 392                 .debug_typenames 0 : { *(.debug_typenames) }            \
 393                 .debug_varnames  0 : { *(.debug_varnames) }             \
 394
 395                 /* Stabs debugging sections.  */
 396 #define STABS_DEBUG                                                     \
 397                 .stab 0 : { *(.stab) }                                  \
 398                 .stabstr 0 : { *(.stabstr) }                            \
 399                 .stab.excl 0 : { *(.stab.excl) }                        \
 400                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
 401                 .stab.index 0 : { *(.stab.index) }                      \
 402                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
 403                 .comment 0 : { *(.comment) }
 404
 405 #ifdef CONFIG_GENERIC_BUG
 406 #define BUG_TABLE                                                       \
 407         . = ALIGN(8);                                                   \
 408         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
 409                 VMLINUX_SYMBOL(__start___bug_table) = .;                \
 410                 *(__bug_table)                                          \
 411                 VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
 412         }
 413 #else
 414 #define BUG_TABLE
 415 #endif
 416
 417 #ifdef CONFIG_PM_TRACE
 418 #define TRACEDATA                                                       \
 419         . = ALIGN(4);                                                   \
 420         .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
 421                 VMLINUX_SYMBOL(__tracedata_start) = .;                  \
 422                 *(.tracedata)                                           \
 423                 VMLINUX_SYMBOL(__tracedata_end) = .;                    \
 424         }
 425 #else
 426 #define TRACEDATA
 427 #endif
 428
 429 #define NOTES                                                           \
 430         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
 431                 VMLINUX_SYMBOL(__start_notes) = .;                      \
 432                 *(.note.*)                                              \
 433                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
 434         }
 435
 436 #define INITCALLS                                                       \
 437         *(.initcallearly.init)                                          \
 438         VMLINUX_SYMBOL(__early_initcall_end) = .;                       \
 439         *(.initcall0.init)                                              \
 440         *(.initcall0s.init)                                             \
 441         *(.initcall1.init)                                              \
 442         *(.initcall1s.init)                                             \
 443         *(.initcall2.init)                                              \
 444         *(.initcall2s.init)                                             \
 445         *(.initcall3.init)                                              \
 446         *(.initcall3s.init)                                             \
 447         *(.initcall4.init)                                              \
 448         *(.initcall4s.init)                                             \
 449         *(.initcall5.init)                                              \
 450         *(.initcall5s.init)                                             \
 451         *(.initcallrootfs.init)                                         \
 452         *(.initcall6.init)                                              \
 453         *(.initcall6s.init)                                             \
 454         *(.initcall7.init)                                              \
 455         *(.initcall7s.init)
 456
 457 /**
 458  * PERCPU_VADDR - define output section for percpu area
 459  * @vaddr: explicit base address (optional)
 460  * @phdr: destination PHDR (optional)
 461  *
 462  * Macro which expands to output section for percpu area.  If @vaddr
 463  * is not blank, it specifies explicit base address and all percpu
 464  * symbols will be offset from the given address.  If blank, @vaddr
 465  * always equals @laddr + LOAD_OFFSET.
 466  *
 467  * @phdr defines the output PHDR to use if not blank.  Be warned that
 468  * output PHDR is sticky.  If @phdr is specified, the next output
 469  * section in the linker script will go there too.  @phdr should have
 470  * a leading colon.
 471  *
 472  * Note that this macros defines __per_cpu_load as an absolute symbol.
 473  * If there is no need to put the percpu section at a predetermined
 474  * address, use PERCPU().
 475  */
 476 #define PERCPU_VADDR(vaddr, phdr)                                       \
 477         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
 478         .data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)          \
 479                                 - LOAD_OFFSET) {                        \
 480                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
 481                 *(.data.percpu.first)                                   \
 482                 *(.data.percpu.page_aligned)                            \
 483                 *(.data.percpu)                                         \
 484                 *(.data.percpu.shared_aligned)                          \
 485                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
 486         } phdr                                                          \
 487         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data.percpu);
 488
 489 /**
 490  * PERCPU - define output section for percpu area, simple version
 491  * @align: required alignment
 492  *
 493  * Align to @align and outputs output section for percpu area.  This
 494  * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
 495  * __per_cpu_start will be identical.
 496  *
 497  * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
 498  * that __per_cpu_load is defined as a relative symbol against
 499  * .data.percpu which is required for relocatable x86_32
 500  * configuration.
 501  */
 502 #define PERCPU(align)                                                   \
 503         . = ALIGN(align);                                               \
 504         .data.percpu    : AT(ADDR(.data.percpu) - LOAD_OFFSET) {        \
 505                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
 506                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
 507                 *(.data.percpu.first)                                   \
 508                 *(.data.percpu.page_aligned)                            \
 509                 *(.data.percpu)                                         \
 510                 *(.data.percpu.shared_aligned)                          \
 511                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
 512         }