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tracing/syscalls: support for syscalls tracing on x86
[mirror_ubuntu-jammy-kernel.git] / include / asm-generic / vmlinux.lds.h
CommitLineData
1da177e4
LT
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
6d30e3a8
SR
9/* Align . to a 8 byte boundary equals to maximum function alignment. */
10#define ALIGN_FUNCTION() . = ALIGN(8)
11
eb8f6890
SR
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
1a3fb6d4 32#if defined(CONFIG_MEMORY_HOTPLUG)
eb8f6890
SR
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
8da3821b
SR
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
eb8f6890 47
2ed84eeb 48#ifdef CONFIG_TRACE_BRANCH_PROFILING
45b79749
SR
49#define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
50 *(_ftrace_annotated_branch) \
51 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
1f0d69a9
SR
52#else
53#define LIKELY_PROFILE()
54#endif
55
2bcd521a
SR
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
b77e38aa
SR
64#ifdef CONFIG_EVENT_TRACER
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
1ba28e02
LJ
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
ca967258
SR
80/* .data section */
81#define DATA_DATA \
0e0d314e 82 *(.data) \
8256e47c 83 *(.data.init.refok) \
312b1485 84 *(.ref.data) \
eb8f6890
SR
85 DEV_KEEP(init.data) \
86 DEV_KEEP(exit.data) \
87 CPU_KEEP(init.data) \
88 CPU_KEEP(exit.data) \
89 MEM_KEEP(init.data) \
90 MEM_KEEP(exit.data) \
8256e47c
MD
91 . = ALIGN(8); \
92 VMLINUX_SYMBOL(__start___markers) = .; \
93 *(__markers) \
97e1c18e 94 VMLINUX_SYMBOL(__stop___markers) = .; \
7e066fb8 95 . = ALIGN(32); \
97e1c18e
MD
96 VMLINUX_SYMBOL(__start___tracepoints) = .; \
97 *(__tracepoints) \
1f0d69a9 98 VMLINUX_SYMBOL(__stop___tracepoints) = .; \
2bcd521a 99 LIKELY_PROFILE() \
b77e38aa 100 BRANCH_PROFILE() \
8a20d84d 101 TRACE_PRINTKS() \
b77e38aa 102 FTRACE_EVENTS()
ca967258 103
4096b46f
SR
104#define RO_DATA(align) \
105 . = ALIGN((align)); \
1da177e4 106 .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
6569580d 107 VMLINUX_SYMBOL(__start_rodata) = .; \
1da177e4
LT
108 *(.rodata) *(.rodata.*) \
109 *(__vermagic) /* Kernel version magic */ \
8256e47c 110 *(__markers_strings) /* Markers: strings */ \
97e1c18e 111 *(__tracepoints_strings)/* Tracepoints: strings */ \
1da177e4
LT
112 } \
113 \
114 .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
115 *(.rodata1) \
116 } \
117 \
6360b1fb
JB
118 BUG_TABLE \
119 \
1da177e4
LT
120 /* PCI quirks */ \
121 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
122 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
123 *(.pci_fixup_early) \
124 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
125 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
126 *(.pci_fixup_header) \
127 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
128 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
129 *(.pci_fixup_final) \
130 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
131 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
132 *(.pci_fixup_enable) \
133 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
1597cacb
AC
134 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
135 *(.pci_fixup_resume) \
136 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
e1a2a51e
RW
137 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
138 *(.pci_fixup_resume_early) \
139 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
140 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
141 *(.pci_fixup_suspend) \
142 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
1da177e4
LT
143 } \
144 \
5658c769
DW
145 /* Built-in firmware blobs */ \
146 .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
147 VMLINUX_SYMBOL(__start_builtin_fw) = .; \
148 *(.builtin_fw) \
149 VMLINUX_SYMBOL(__end_builtin_fw) = .; \
150 } \
151 \
394b701c
MP
152 /* RapidIO route ops */ \
153 .rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
154 VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
155 *(.rio_route_ops) \
156 VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
157 } \
158 \
63687a52
JB
159 TRACEDATA \
160 \
1da177e4
LT
161 /* Kernel symbol table: Normal symbols */ \
162 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
163 VMLINUX_SYMBOL(__start___ksymtab) = .; \
164 *(__ksymtab) \
165 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
166 } \
167 \
168 /* Kernel symbol table: GPL-only symbols */ \
169 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
170 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
171 *(__ksymtab_gpl) \
172 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
173 } \
174 \
f71d20e9
AV
175 /* Kernel symbol table: Normal unused symbols */ \
176 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
177 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
178 *(__ksymtab_unused) \
179 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
180 } \
181 \
182 /* Kernel symbol table: GPL-only unused symbols */ \
183 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
184 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
185 *(__ksymtab_unused_gpl) \
186 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
187 } \
188 \
9f28bb7e
GKH
189 /* Kernel symbol table: GPL-future-only symbols */ \
190 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
191 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
192 *(__ksymtab_gpl_future) \
193 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
194 } \
195 \
1da177e4
LT
196 /* Kernel symbol table: Normal symbols */ \
197 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
198 VMLINUX_SYMBOL(__start___kcrctab) = .; \
199 *(__kcrctab) \
200 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
201 } \
202 \
203 /* Kernel symbol table: GPL-only symbols */ \
204 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
205 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
206 *(__kcrctab_gpl) \
207 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
208 } \
209 \
f71d20e9
AV
210 /* Kernel symbol table: Normal unused symbols */ \
211 __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
212 VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
213 *(__kcrctab_unused) \
214 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
215 } \
216 \
217 /* Kernel symbol table: GPL-only unused symbols */ \
218 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
219 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
220 *(__kcrctab_unused_gpl) \
221 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
222 } \
223 \
9f28bb7e
GKH
224 /* Kernel symbol table: GPL-future-only symbols */ \
225 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
226 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
227 *(__kcrctab_gpl_future) \
228 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
229 } \
230 \
1da177e4
LT
231 /* Kernel symbol table: strings */ \
232 __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
233 *(__ksymtab_strings) \
234 } \
235 \
eb8f6890
SR
236 /* __*init sections */ \
237 __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
312b1485 238 *(.ref.rodata) \
8da3821b 239 MCOUNT_REC() \
eb8f6890
SR
240 DEV_KEEP(init.rodata) \
241 DEV_KEEP(exit.rodata) \
242 CPU_KEEP(init.rodata) \
243 CPU_KEEP(exit.rodata) \
244 MEM_KEEP(init.rodata) \
245 MEM_KEEP(exit.rodata) \
246 } \
247 \
1da177e4
LT
248 /* Built-in module parameters. */ \
249 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
250 VMLINUX_SYMBOL(__start___param) = .; \
251 *(__param) \
252 VMLINUX_SYMBOL(__stop___param) = .; \
edeed305 253 . = ALIGN((align)); \
6569580d 254 VMLINUX_SYMBOL(__end_rodata) = .; \
7583ddfd 255 } \
4096b46f
SR
256 . = ALIGN((align));
257
258/* RODATA provided for backward compatibility.
259 * All archs are supposed to use RO_DATA() */
260#define RODATA RO_DATA(4096)
1da177e4
LT
261
262#define SECURITY_INIT \
60bad7fa 263 .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
1da177e4
LT
264 VMLINUX_SYMBOL(__security_initcall_start) = .; \
265 *(.security_initcall.init) \
266 VMLINUX_SYMBOL(__security_initcall_end) = .; \
267 }
268
7664709b
SR
269/* .text section. Map to function alignment to avoid address changes
270 * during second ld run in second ld pass when generating System.map */
271#define TEXT_TEXT \
272 ALIGN_FUNCTION(); \
fb5e2b37 273 *(.text.hot) \
0e0d314e 274 *(.text) \
312b1485 275 *(.ref.text) \
23ec23c2 276 *(.text.init.refok) \
eb8f6890
SR
277 *(.exit.text.refok) \
278 DEV_KEEP(init.text) \
279 DEV_KEEP(exit.text) \
280 CPU_KEEP(init.text) \
281 CPU_KEEP(exit.text) \
282 MEM_KEEP(init.text) \
fb5e2b37
JB
283 MEM_KEEP(exit.text) \
284 *(.text.unlikely)
eb8f6890 285
7664709b 286
6d30e3a8
SR
287/* sched.text is aling to function alignment to secure we have same
288 * address even at second ld pass when generating System.map */
1da177e4 289#define SCHED_TEXT \
6d30e3a8 290 ALIGN_FUNCTION(); \
1da177e4
LT
291 VMLINUX_SYMBOL(__sched_text_start) = .; \
292 *(.sched.text) \
293 VMLINUX_SYMBOL(__sched_text_end) = .;
294
6d30e3a8
SR
295/* spinlock.text is aling to function alignment to secure we have same
296 * address even at second ld pass when generating System.map */
1da177e4 297#define LOCK_TEXT \
6d30e3a8 298 ALIGN_FUNCTION(); \
1da177e4
LT
299 VMLINUX_SYMBOL(__lock_text_start) = .; \
300 *(.spinlock.text) \
301 VMLINUX_SYMBOL(__lock_text_end) = .;
d0aaff97
PP
302
303#define KPROBES_TEXT \
304 ALIGN_FUNCTION(); \
305 VMLINUX_SYMBOL(__kprobes_text_start) = .; \
306 *(.kprobes.text) \
307 VMLINUX_SYMBOL(__kprobes_text_end) = .;
a7d0c210 308
a0343e82
FW
309#ifdef CONFIG_FUNCTION_GRAPH_TRACER
310#define IRQENTRY_TEXT \
311 ALIGN_FUNCTION(); \
312 VMLINUX_SYMBOL(__irqentry_text_start) = .; \
313 *(.irqentry.text) \
314 VMLINUX_SYMBOL(__irqentry_text_end) = .;
315#else
316#define IRQENTRY_TEXT
317#endif
318
37c514e3
SR
319/* Section used for early init (in .S files) */
320#define HEAD_TEXT *(.head.text)
321
01ba2bdc 322/* init and exit section handling */
eb8f6890
SR
323#define INIT_DATA \
324 *(.init.data) \
325 DEV_DISCARD(init.data) \
326 DEV_DISCARD(init.rodata) \
327 CPU_DISCARD(init.data) \
328 CPU_DISCARD(init.rodata) \
329 MEM_DISCARD(init.data) \
346e15be
JB
330 MEM_DISCARD(init.rodata) \
331 /* implement dynamic printk debug */ \
332 VMLINUX_SYMBOL(__start___verbose_strings) = .; \
333 *(__verbose_strings) \
334 VMLINUX_SYMBOL(__stop___verbose_strings) = .; \
335 . = ALIGN(8); \
336 VMLINUX_SYMBOL(__start___verbose) = .; \
337 *(__verbose) \
338 VMLINUX_SYMBOL(__stop___verbose) = .;
eb8f6890
SR
339
340#define INIT_TEXT \
341 *(.init.text) \
342 DEV_DISCARD(init.text) \
343 CPU_DISCARD(init.text) \
344 MEM_DISCARD(init.text)
345
346#define EXIT_DATA \
347 *(.exit.data) \
348 DEV_DISCARD(exit.data) \
349 DEV_DISCARD(exit.rodata) \
350 CPU_DISCARD(exit.data) \
351 CPU_DISCARD(exit.rodata) \
352 MEM_DISCARD(exit.data) \
353 MEM_DISCARD(exit.rodata)
01ba2bdc 354
eb8f6890
SR
355#define EXIT_TEXT \
356 *(.exit.text) \
357 DEV_DISCARD(exit.text) \
358 CPU_DISCARD(exit.text) \
359 MEM_DISCARD(exit.text)
01ba2bdc 360
a7d0c210
PBG
361 /* DWARF debug sections.
362 Symbols in the DWARF debugging sections are relative to
363 the beginning of the section so we begin them at 0. */
364#define DWARF_DEBUG \
365 /* DWARF 1 */ \
366 .debug 0 : { *(.debug) } \
367 .line 0 : { *(.line) } \
368 /* GNU DWARF 1 extensions */ \
369 .debug_srcinfo 0 : { *(.debug_srcinfo) } \
370 .debug_sfnames 0 : { *(.debug_sfnames) } \
371 /* DWARF 1.1 and DWARF 2 */ \
372 .debug_aranges 0 : { *(.debug_aranges) } \
373 .debug_pubnames 0 : { *(.debug_pubnames) } \
374 /* DWARF 2 */ \
375 .debug_info 0 : { *(.debug_info \
376 .gnu.linkonce.wi.*) } \
377 .debug_abbrev 0 : { *(.debug_abbrev) } \
378 .debug_line 0 : { *(.debug_line) } \
379 .debug_frame 0 : { *(.debug_frame) } \
380 .debug_str 0 : { *(.debug_str) } \
381 .debug_loc 0 : { *(.debug_loc) } \
382 .debug_macinfo 0 : { *(.debug_macinfo) } \
383 /* SGI/MIPS DWARF 2 extensions */ \
384 .debug_weaknames 0 : { *(.debug_weaknames) } \
385 .debug_funcnames 0 : { *(.debug_funcnames) } \
386 .debug_typenames 0 : { *(.debug_typenames) } \
387 .debug_varnames 0 : { *(.debug_varnames) } \
388
389 /* Stabs debugging sections. */
390#define STABS_DEBUG \
391 .stab 0 : { *(.stab) } \
392 .stabstr 0 : { *(.stabstr) } \
393 .stab.excl 0 : { *(.stab.excl) } \
394 .stab.exclstr 0 : { *(.stab.exclstr) } \
395 .stab.index 0 : { *(.stab.index) } \
396 .stab.indexstr 0 : { *(.stab.indexstr) } \
397 .comment 0 : { *(.comment) }
9c9b8b38 398
6360b1fb 399#ifdef CONFIG_GENERIC_BUG
7664c5a1
JF
400#define BUG_TABLE \
401 . = ALIGN(8); \
402 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
c6de0026 403 VMLINUX_SYMBOL(__start___bug_table) = .; \
7664c5a1 404 *(__bug_table) \
c6de0026 405 VMLINUX_SYMBOL(__stop___bug_table) = .; \
7664c5a1 406 }
6360b1fb
JB
407#else
408#define BUG_TABLE
409#endif
7664c5a1 410
63687a52
JB
411#ifdef CONFIG_PM_TRACE
412#define TRACEDATA \
413 . = ALIGN(4); \
414 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
c6de0026 415 VMLINUX_SYMBOL(__tracedata_start) = .; \
63687a52 416 *(.tracedata) \
c6de0026 417 VMLINUX_SYMBOL(__tracedata_end) = .; \
63687a52
JB
418 }
419#else
420#define TRACEDATA
421#endif
422
9c9b8b38 423#define NOTES \
cbe87121
RM
424 .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
425 VMLINUX_SYMBOL(__start_notes) = .; \
426 *(.note.*) \
427 VMLINUX_SYMBOL(__stop_notes) = .; \
428 }
61ce1efe
AM
429
430#define INITCALLS \
c2147a50 431 *(.initcallearly.init) \
c6de0026 432 VMLINUX_SYMBOL(__early_initcall_end) = .; \
b3438f82
LT
433 *(.initcall0.init) \
434 *(.initcall0s.init) \
61ce1efe 435 *(.initcall1.init) \
735a7ffb 436 *(.initcall1s.init) \
61ce1efe 437 *(.initcall2.init) \
735a7ffb 438 *(.initcall2s.init) \
61ce1efe 439 *(.initcall3.init) \
735a7ffb 440 *(.initcall3s.init) \
61ce1efe 441 *(.initcall4.init) \
735a7ffb 442 *(.initcall4s.init) \
61ce1efe 443 *(.initcall5.init) \
735a7ffb 444 *(.initcall5s.init) \
8d610dd5 445 *(.initcallrootfs.init) \
61ce1efe 446 *(.initcall6.init) \
735a7ffb
AM
447 *(.initcall6s.init) \
448 *(.initcall7.init) \
449 *(.initcall7s.init)
61ce1efe 450
3e5d8f97 451/**
6b7c38d5 452 * PERCPU_VADDR - define output section for percpu area
3e5d8f97
TH
453 * @vaddr: explicit base address (optional)
454 * @phdr: destination PHDR (optional)
455 *
456 * Macro which expands to output section for percpu area. If @vaddr
457 * is not blank, it specifies explicit base address and all percpu
458 * symbols will be offset from the given address. If blank, @vaddr
459 * always equals @laddr + LOAD_OFFSET.
460 *
461 * @phdr defines the output PHDR to use if not blank. Be warned that
462 * output PHDR is sticky. If @phdr is specified, the next output
463 * section in the linker script will go there too. @phdr should have
464 * a leading colon.
465 *
3ac6cffe
TH
466 * Note that this macros defines __per_cpu_load as an absolute symbol.
467 * If there is no need to put the percpu section at a predetermined
468 * address, use PERCPU().
3e5d8f97
TH
469 */
470#define PERCPU_VADDR(vaddr, phdr) \
dba3d36b
IM
471 VMLINUX_SYMBOL(__per_cpu_load) = .; \
472 .data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \
6b7c38d5
TH
473 - LOAD_OFFSET) { \
474 VMLINUX_SYMBOL(__per_cpu_start) = .; \
0bd74fa8 475 *(.data.percpu.first) \
63cc8c75 476 *(.data.percpu.page_aligned) \
5fb7dc37
FY
477 *(.data.percpu) \
478 *(.data.percpu.shared_aligned) \
6b7c38d5
TH
479 VMLINUX_SYMBOL(__per_cpu_end) = .; \
480 } phdr \
dba3d36b 481 . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data.percpu);
3e5d8f97
TH
482
483/**
484 * PERCPU - define output section for percpu area, simple version
485 * @align: required alignment
486 *
487 * Align to @align and outputs output section for percpu area. This
488 * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
489 * __per_cpu_start will be identical.
3ac6cffe
TH
490 *
491 * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
492 * that __per_cpu_load is defined as a relative symbol against
493 * .data.percpu which is required for relocatable x86_32
494 * configuration.
3e5d8f97 495 */
5fb7dc37
FY
496#define PERCPU(align) \
497 . = ALIGN(align); \
3ac6cffe
TH
498 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
499 VMLINUX_SYMBOL(__per_cpu_load) = .; \
500 VMLINUX_SYMBOL(__per_cpu_start) = .; \
501 *(.data.percpu.first) \
63cc8c75 502 *(.data.percpu.page_aligned) \
5fb7dc37
FY
503 *(.data.percpu) \
504 *(.data.percpu.shared_aligned) \
3ac6cffe
TH
505 VMLINUX_SYMBOL(__per_cpu_end) = .; \
506 }