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kernel: fix booting issues on imx23 and imx6 targets
[openwrt/svn-archive/archive.git] / target / linux / generic / patches-3.10 / 220-gc_sections.patch
1 From: Felix Fietkau <nbd@openwrt.org>
2
3 use -ffunction-sections, -fdata-sections and --gc-sections
4
5 In combination with kernel symbol export stripping this significantly reduces
6 the kernel image size. Used on both ARM and MIPS architectures.
7
8 Signed-off-by: Felix Fietkau <nbd@openwrt.org>
9 Signed-off-by: Jonas Gorski <jogo@openwrt.org>
10 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
11 ---
12
13 --- a/arch/mips/Makefile
14 +++ b/arch/mips/Makefile
15 @@ -89,10 +89,14 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin
16 #
17 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
18 cflags-y += -msoft-float
19 -LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
20 +LDFLAGS_vmlinux += -G 0 -static -n -nostdlib --gc-sections
21 KBUILD_AFLAGS_MODULE += -mlong-calls
22 KBUILD_CFLAGS_MODULE += -mlong-calls
23
24 +ifndef CONFIG_FUNCTION_TRACER
25 +KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections
26 +endif
27 +
28 cflags-y += -ffreestanding
29
30 #
31 --- a/arch/mips/kernel/vmlinux.lds.S
32 +++ b/arch/mips/kernel/vmlinux.lds.S
33 @@ -67,7 +67,7 @@ SECTIONS
34 /* Exception table for data bus errors */
35 __dbe_table : {
36 __start___dbe_table = .;
37 - *(__dbe_table)
38 + KEEP(*(__dbe_table))
39 __stop___dbe_table = .;
40 }
41
42 @@ -112,7 +112,7 @@ SECTIONS
43 . = ALIGN(4);
44 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
45 __mips_machines_start = .;
46 - *(.mips.machines.init)
47 + KEEP(*(.mips.machines.init))
48 __mips_machines_end = .;
49 }
50
51 --- a/include/asm-generic/vmlinux.lds.h
52 +++ b/include/asm-generic/vmlinux.lds.h
53 @@ -95,7 +95,7 @@
54 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
55 #define MCOUNT_REC() . = ALIGN(8); \
56 VMLINUX_SYMBOL(__start_mcount_loc) = .; \
57 - *(__mcount_loc) \
58 + KEEP(*(__mcount_loc)) \
59 VMLINUX_SYMBOL(__stop_mcount_loc) = .;
60 #else
61 #define MCOUNT_REC()
62 @@ -103,7 +103,7 @@
63
64 #ifdef CONFIG_TRACE_BRANCH_PROFILING
65 #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
66 - *(_ftrace_annotated_branch) \
67 + KEEP(*(_ftrace_annotated_branch)) \
68 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
69 #else
70 #define LIKELY_PROFILE()
71 @@ -111,7 +111,7 @@
72
73 #ifdef CONFIG_PROFILE_ALL_BRANCHES
74 #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \
75 - *(_ftrace_branch) \
76 + KEEP(*(_ftrace_branch)) \
77 VMLINUX_SYMBOL(__stop_branch_profile) = .;
78 #else
79 #define BRANCH_PROFILE()
80 @@ -120,7 +120,7 @@
81 #ifdef CONFIG_EVENT_TRACING
82 #define FTRACE_EVENTS() . = ALIGN(8); \
83 VMLINUX_SYMBOL(__start_ftrace_events) = .; \
84 - *(_ftrace_events) \
85 + KEEP(*(_ftrace_events)) \
86 VMLINUX_SYMBOL(__stop_ftrace_events) = .;
87 #else
88 #define FTRACE_EVENTS()
89 @@ -128,7 +128,7 @@
90
91 #ifdef CONFIG_TRACING
92 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \
93 - *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
94 + KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \
95 VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
96 #else
97 #define TRACE_PRINTKS()
98 @@ -137,7 +137,7 @@
99 #ifdef CONFIG_FTRACE_SYSCALLS
100 #define TRACE_SYSCALLS() . = ALIGN(8); \
101 VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
102 - *(__syscalls_metadata) \
103 + KEEP(*(__syscalls_metadata)) \
104 VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
105 #else
106 #define TRACE_SYSCALLS()
107 @@ -146,8 +146,8 @@
108 #ifdef CONFIG_CLKSRC_OF
109 #define CLKSRC_OF_TABLES() . = ALIGN(8); \
110 VMLINUX_SYMBOL(__clksrc_of_table) = .; \
111 - *(__clksrc_of_table) \
112 - *(__clksrc_of_table_end)
113 + KEEP(*(__clksrc_of_table)) \
114 + KEEP(*(__clksrc_of_table_end))
115 #else
116 #define CLKSRC_OF_TABLES()
117 #endif
118 @@ -156,8 +156,8 @@
119 #define IRQCHIP_OF_MATCH_TABLE() \
120 . = ALIGN(8); \
121 VMLINUX_SYMBOL(__irqchip_begin) = .; \
122 - *(__irqchip_of_table) \
123 - *(__irqchip_of_end)
124 + KEEP(*(__irqchip_of_table)) \
125 + KEEP(*(__irqchip_of_end))
126 #else
127 #define IRQCHIP_OF_MATCH_TABLE()
128 #endif
129 @@ -165,8 +165,8 @@
130 #ifdef CONFIG_COMMON_CLK
131 #define CLK_OF_TABLES() . = ALIGN(8); \
132 VMLINUX_SYMBOL(__clk_of_table) = .; \
133 - *(__clk_of_table) \
134 - *(__clk_of_table_end)
135 + KEEP(*(__clk_of_table)) \
136 + KEEP(*(__clk_of_table_end))
137 #else
138 #define CLK_OF_TABLES()
139 #endif
140 @@ -174,7 +174,7 @@
141 #define KERNEL_DTB() \
142 STRUCT_ALIGN(); \
143 VMLINUX_SYMBOL(__dtb_start) = .; \
144 - *(.dtb.init.rodata) \
145 + KEEP(*(.dtb.init.rodata)) \
146 VMLINUX_SYMBOL(__dtb_end) = .;
147
148 /* .data section */
149 @@ -194,15 +194,16 @@
150 /* implement dynamic printk debug */ \
151 . = ALIGN(8); \
152 VMLINUX_SYMBOL(__start___jump_table) = .; \
153 - *(__jump_table) \
154 + KEEP(*(__jump_table)) \
155 VMLINUX_SYMBOL(__stop___jump_table) = .; \
156 . = ALIGN(8); \
157 VMLINUX_SYMBOL(__start___verbose) = .; \
158 - *(__verbose) \
159 + KEEP(*(__verbose)) \
160 VMLINUX_SYMBOL(__stop___verbose) = .; \
161 LIKELY_PROFILE() \
162 BRANCH_PROFILE() \
163 - TRACE_PRINTKS()
164 + TRACE_PRINTKS() \
165 + *(.data.[a-zA-Z_]*)
166
167 /*
168 * Data section helpers
169 @@ -256,39 +257,39 @@
170 /* PCI quirks */ \
171 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
172 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
173 - *(.pci_fixup_early) \
174 + KEEP(*(.pci_fixup_early)) \
175 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
176 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
177 - *(.pci_fixup_header) \
178 + KEEP(*(.pci_fixup_header)) \
179 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
180 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
181 - *(.pci_fixup_final) \
182 + KEEP(*(.pci_fixup_final)) \
183 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
184 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
185 - *(.pci_fixup_enable) \
186 + KEEP(*(.pci_fixup_enable)) \
187 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
188 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
189 - *(.pci_fixup_resume) \
190 + KEEP(*(.pci_fixup_resume)) \
191 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
192 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
193 - *(.pci_fixup_resume_early) \
194 + KEEP(*(.pci_fixup_resume_early)) \
195 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
196 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
197 - *(.pci_fixup_suspend) \
198 + KEEP(*(.pci_fixup_suspend)) \
199 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
200 } \
201 \
202 /* Built-in firmware blobs */ \
203 .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
204 VMLINUX_SYMBOL(__start_builtin_fw) = .; \
205 - *(.builtin_fw) \
206 + KEEP(*(.builtin_fw)) \
207 VMLINUX_SYMBOL(__end_builtin_fw) = .; \
208 } \
209 \
210 /* RapidIO route ops */ \
211 .rio_ops : AT(ADDR(.rio_ops) - LOAD_OFFSET) { \
212 VMLINUX_SYMBOL(__start_rio_switch_ops) = .; \
213 - *(.rio_switch_ops) \
214 + KEEP(*(.rio_switch_ops)) \
215 VMLINUX_SYMBOL(__end_rio_switch_ops) = .; \
216 } \
217 \
218 @@ -297,49 +298,49 @@
219 /* Kernel symbol table: Normal symbols */ \
220 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
221 VMLINUX_SYMBOL(__start___ksymtab) = .; \
222 - *(SORT(___ksymtab+*)) \
223 + KEEP(*(SORT(___ksymtab+*))) \
224 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
225 } \
226 \
227 /* Kernel symbol table: GPL-only symbols */ \
228 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
229 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
230 - *(SORT(___ksymtab_gpl+*)) \
231 + KEEP(*(SORT(___ksymtab_gpl+*))) \
232 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
233 } \
234 \
235 /* Kernel symbol table: Normal unused symbols */ \
236 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
237 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
238 - *(SORT(___ksymtab_unused+*)) \
239 + KEEP(*(SORT(___ksymtab_unused+*))) \
240 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
241 } \
242 \
243 /* Kernel symbol table: GPL-only unused symbols */ \
244 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
245 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
246 - *(SORT(___ksymtab_unused_gpl+*)) \
247 + KEEP(*(SORT(___ksymtab_unused_gpl+*))) \
248 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
249 } \
250 \
251 /* Kernel symbol table: GPL-future-only symbols */ \
252 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
253 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
254 - *(SORT(___ksymtab_gpl_future+*)) \
255 + KEEP(*(SORT(___ksymtab_gpl_future+*))) \
256 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
257 } \
258 \
259 /* Kernel symbol table: Normal symbols */ \
260 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
261 VMLINUX_SYMBOL(__start___kcrctab) = .; \
262 - *(SORT(___kcrctab+*)) \
263 + KEEP(*(SORT(___kcrctab+*))) \
264 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
265 } \
266 \
267 /* Kernel symbol table: GPL-only symbols */ \
268 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
269 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
270 - *(SORT(___kcrctab_gpl+*)) \
271 + KEEP(*(SORT(___kcrctab_gpl+*))) \
272 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
273 } \
274 \
275 @@ -353,14 +354,14 @@
276 /* Kernel symbol table: GPL-only unused symbols */ \
277 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
278 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
279 - *(SORT(___kcrctab_unused_gpl+*)) \
280 + KEEP(*(SORT(___kcrctab_unused_gpl+*))) \
281 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
282 } \
283 \
284 /* Kernel symbol table: GPL-future-only symbols */ \
285 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
286 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
287 - *(SORT(___kcrctab_gpl_future+*)) \
288 + KEEP(*(SORT(___kcrctab_gpl_future+*))) \
289 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
290 } \
291 \
292 @@ -383,14 +384,14 @@
293 /* Built-in module parameters. */ \
294 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
295 VMLINUX_SYMBOL(__start___param) = .; \
296 - *(__param) \
297 + KEEP(*(__param)) \
298 VMLINUX_SYMBOL(__stop___param) = .; \
299 } \
300 \
301 /* Built-in module versions. */ \
302 __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \
303 VMLINUX_SYMBOL(__start___modver) = .; \
304 - *(__modver) \
305 + KEEP(*(__modver)) \
306 VMLINUX_SYMBOL(__stop___modver) = .; \
307 . = ALIGN((align)); \
308 VMLINUX_SYMBOL(__end_rodata) = .; \
309 @@ -450,7 +451,7 @@
310 #define ENTRY_TEXT \
311 ALIGN_FUNCTION(); \
312 VMLINUX_SYMBOL(__entry_text_start) = .; \
313 - *(.entry.text) \
314 + KEEP(*(.entry.text)) \
315 VMLINUX_SYMBOL(__entry_text_end) = .;
316
317 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
318 @@ -478,7 +479,7 @@
319 . = ALIGN(align); \
320 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \
321 VMLINUX_SYMBOL(__start___ex_table) = .; \
322 - *(__ex_table) \
323 + KEEP(*(__ex_table)) \
324 VMLINUX_SYMBOL(__stop___ex_table) = .; \
325 }
326
327 @@ -494,7 +495,7 @@
328 #ifdef CONFIG_CONSTRUCTORS
329 #define KERNEL_CTORS() . = ALIGN(8); \
330 VMLINUX_SYMBOL(__ctors_start) = .; \
331 - *(.ctors) \
332 + KEEP(*(.ctors)) \
333 VMLINUX_SYMBOL(__ctors_end) = .;
334 #else
335 #define KERNEL_CTORS()
336 @@ -550,7 +551,7 @@
337 #define SBSS(sbss_align) \
338 . = ALIGN(sbss_align); \
339 .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
340 - *(.sbss) \
341 + *(.sbss .sbss.*) \
342 *(.scommon) \
343 }
344
345 @@ -568,7 +569,7 @@
346 BSS_FIRST_SECTIONS \
347 *(.bss..page_aligned) \
348 *(.dynbss) \
349 - *(.bss) \
350 + *(.bss .bss.*) \
351 *(COMMON) \
352 }
353
354 @@ -617,7 +618,7 @@
355 . = ALIGN(8); \
356 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
357 VMLINUX_SYMBOL(__start___bug_table) = .; \
358 - *(__bug_table) \
359 + KEEP(*(__bug_table)) \
360 VMLINUX_SYMBOL(__stop___bug_table) = .; \
361 }
362 #else
363 @@ -629,7 +630,7 @@
364 . = ALIGN(4); \
365 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
366 VMLINUX_SYMBOL(__tracedata_start) = .; \
367 - *(.tracedata) \
368 + KEEP(*(.tracedata)) \
369 VMLINUX_SYMBOL(__tracedata_end) = .; \
370 }
371 #else
372 @@ -646,17 +647,17 @@
373 #define INIT_SETUP(initsetup_align) \
374 . = ALIGN(initsetup_align); \
375 VMLINUX_SYMBOL(__setup_start) = .; \
376 - *(.init.setup) \
377 + KEEP(*(.init.setup)) \
378 VMLINUX_SYMBOL(__setup_end) = .;
379
380 #define INIT_CALLS_LEVEL(level) \
381 VMLINUX_SYMBOL(__initcall##level##_start) = .; \
382 - *(.initcall##level##.init) \
383 - *(.initcall##level##s.init) \
384 + KEEP(*(.initcall##level##.init)) \
385 + KEEP(*(.initcall##level##s.init)) \
386
387 #define INIT_CALLS \
388 VMLINUX_SYMBOL(__initcall_start) = .; \
389 - *(.initcallearly.init) \
390 + KEEP(*(.initcallearly.init)) \
391 INIT_CALLS_LEVEL(0) \
392 INIT_CALLS_LEVEL(1) \
393 INIT_CALLS_LEVEL(2) \
394 @@ -670,21 +671,21 @@
395
396 #define CON_INITCALL \
397 VMLINUX_SYMBOL(__con_initcall_start) = .; \
398 - *(.con_initcall.init) \
399 + KEEP(*(.con_initcall.init)) \
400 VMLINUX_SYMBOL(__con_initcall_end) = .;
401
402 #define SECURITY_INITCALL \
403 VMLINUX_SYMBOL(__security_initcall_start) = .; \
404 - *(.security_initcall.init) \
405 + KEEP(*(.security_initcall.init)) \
406 VMLINUX_SYMBOL(__security_initcall_end) = .;
407
408 #ifdef CONFIG_BLK_DEV_INITRD
409 #define INIT_RAM_FS \
410 . = ALIGN(4); \
411 VMLINUX_SYMBOL(__initramfs_start) = .; \
412 - *(.init.ramfs) \
413 + KEEP(*(.init.ramfs)) \
414 . = ALIGN(8); \
415 - *(.init.ramfs.info)
416 + KEEP(*(.init.ramfs.info))
417 #else
418 #define INIT_RAM_FS
419 #endif
420 --- a/arch/arm/Makefile
421 +++ b/arch/arm/Makefile
422 @@ -17,11 +17,16 @@ LDFLAGS_vmlinux :=-p --no-undefined -X
423 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
424 LDFLAGS_vmlinux += --be8
425 endif
426 +LDFLAGS_vmlinux += --gc-sections
427
428 OBJCOPYFLAGS :=-O binary -R .comment -S
429 GZFLAGS :=-9
430 #KBUILD_CFLAGS +=-pipe
431
432 +ifndef CONFIG_FUNCTION_TRACER
433 +KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections
434 +endif
435 +
436 # Never generate .eh_frame
437 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
438
439 --- a/arch/arm/kernel/vmlinux.lds.S
440 +++ b/arch/arm/kernel/vmlinux.lds.S
441 @@ -12,13 +12,13 @@
442 #define PROC_INFO \
443 . = ALIGN(4); \
444 VMLINUX_SYMBOL(__proc_info_begin) = .; \
445 - *(.proc.info.init) \
446 + KEEP(*(.proc.info.init)) \
447 VMLINUX_SYMBOL(__proc_info_end) = .;
448
449 #define IDMAP_TEXT \
450 ALIGN_FUNCTION(); \
451 VMLINUX_SYMBOL(__idmap_text_start) = .; \
452 - *(.idmap.text) \
453 + KEEP(*(.idmap.text)) \
454 VMLINUX_SYMBOL(__idmap_text_end) = .; \
455 . = ALIGN(32); \
456 VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \
457 @@ -97,7 +97,7 @@ SECTIONS
458 .text : { /* Real text segment */
459 _stext = .; /* Text and read-only data */
460 __exception_text_start = .;
461 - *(.exception.text)
462 + KEEP(*(.exception.text))
463 __exception_text_end = .;
464 IRQENTRY_TEXT
465 TEXT_TEXT
466 @@ -122,7 +122,7 @@ SECTIONS
467 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
468 __start___ex_table = .;
469 #ifdef CONFIG_MMU
470 - *(__ex_table)
471 + KEEP(*(__ex_table))
472 #endif
473 __stop___ex_table = .;
474 }
475 @@ -134,12 +134,12 @@ SECTIONS
476 . = ALIGN(8);
477 .ARM.unwind_idx : {
478 __start_unwind_idx = .;
479 - *(.ARM.exidx*)
480 + KEEP(*(.ARM.exidx*))
481 __stop_unwind_idx = .;
482 }
483 .ARM.unwind_tab : {
484 __start_unwind_tab = .;
485 - *(.ARM.extab*)
486 + KEEP(*(.ARM.extab*))
487 __stop_unwind_tab = .;
488 }
489 #endif
490 @@ -158,14 +158,14 @@ SECTIONS
491 */
492 __vectors_start = .;
493 .vectors 0 : AT(__vectors_start) {
494 - *(.vectors)
495 + KEEP(*(.vectors))
496 }
497 . = __vectors_start + SIZEOF(.vectors);
498 __vectors_end = .;
499
500 __stubs_start = .;
501 .stubs 0x1000 : AT(__stubs_start) {
502 - *(.stubs)
503 + KEEP(*(.stubs))
504 }
505 . = __stubs_start + SIZEOF(.stubs);
506 __stubs_end = .;
507 @@ -179,24 +179,24 @@ SECTIONS
508 }
509 .init.arch.info : {
510 __arch_info_begin = .;
511 - *(.arch.info.init)
512 + KEEP(*(.arch.info.init))
513 __arch_info_end = .;
514 }
515 .init.tagtable : {
516 __tagtable_begin = .;
517 - *(.taglist.init)
518 + KEEP(*(.taglist.init))
519 __tagtable_end = .;
520 }
521 #ifdef CONFIG_SMP_ON_UP
522 .init.smpalt : {
523 __smpalt_begin = .;
524 - *(.alt.smp.init)
525 + KEEP(*(.alt.smp.init))
526 __smpalt_end = .;
527 }
528 #endif
529 .init.pv_table : {
530 __pv_table_begin = .;
531 - *(.pv_table)
532 + KEEP(*(.pv_table))
533 __pv_table_end = .;
534 }
535 .init.data : {
536 --- a/arch/arm/boot/compressed/Makefile
537 +++ b/arch/arm/boot/compressed/Makefile
538 @@ -123,6 +123,7 @@ ifeq ($(CONFIG_FUNCTION_TRACER),y)
539 ORIG_CFLAGS := $(KBUILD_CFLAGS)
540 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
541 endif
542 +KBUILD_CFLAGS_KERNEL := $(patsubst -f%-sections,,$(KBUILD_CFLAGS_KERNEL))
543
544 ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
545 asflags-y := -DZIMAGE
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