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generic: mtd backport for Spansion S25FL164K
[openwrt/openwrt.git] / target / linux / generic / patches-4.0 / 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 #
29 # pass -msoft-float to GAS if it supports it. However on newer binutils
30 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
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 @@ -89,7 +89,7 @@
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 @@ -97,7 +97,7 @@
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 @@ -105,7 +105,7 @@
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 @@ -114,7 +114,7 @@
81 #ifdef CONFIG_KPROBES
82 #define KPROBE_BLACKLIST() . = ALIGN(8); \
83 VMLINUX_SYMBOL(__start_kprobe_blacklist) = .; \
84 - *(_kprobe_blacklist) \
85 + KEEP(*(_kprobe_blacklist)) \
86 VMLINUX_SYMBOL(__stop_kprobe_blacklist) = .;
87 #else
88 #define KPROBE_BLACKLIST()
89 @@ -123,7 +123,7 @@
90 #ifdef CONFIG_EVENT_TRACING
91 #define FTRACE_EVENTS() . = ALIGN(8); \
92 VMLINUX_SYMBOL(__start_ftrace_events) = .; \
93 - *(_ftrace_events) \
94 + KEEP(*(_ftrace_events)) \
95 VMLINUX_SYMBOL(__stop_ftrace_events) = .;
96 #else
97 #define FTRACE_EVENTS()
98 @@ -131,7 +131,7 @@
99
100 #ifdef CONFIG_TRACING
101 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \
102 - *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
103 + KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \
104 VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
105 #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \
106 *(__tracepoint_str) /* Trace_printk fmt' pointer */ \
107 @@ -144,7 +144,7 @@
108 #ifdef CONFIG_FTRACE_SYSCALLS
109 #define TRACE_SYSCALLS() . = ALIGN(8); \
110 VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
111 - *(__syscalls_metadata) \
112 + KEEP(*(__syscalls_metadata)) \
113 VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
114 #else
115 #define TRACE_SYSCALLS()
116 @@ -158,8 +158,8 @@
117 #define _OF_TABLE_1(name) \
118 . = ALIGN(8); \
119 VMLINUX_SYMBOL(__##name##_of_table) = .; \
120 - *(__##name##_of_table) \
121 - *(__##name##_of_table_end)
122 + KEEP(*(__##name##_of_table)) \
123 + KEEP(*(__##name##_of_table_end))
124
125 #define CLKSRC_OF_TABLES() OF_TABLE(CONFIG_CLKSRC_OF, clksrc)
126 #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip)
127 @@ -172,7 +172,7 @@
128 #define KERNEL_DTB() \
129 STRUCT_ALIGN(); \
130 VMLINUX_SYMBOL(__dtb_start) = .; \
131 - *(.dtb.init.rodata) \
132 + KEEP(*(.dtb.init.rodata)) \
133 VMLINUX_SYMBOL(__dtb_end) = .;
134
135 /* .data section */
136 @@ -188,16 +188,17 @@
137 /* implement dynamic printk debug */ \
138 . = ALIGN(8); \
139 VMLINUX_SYMBOL(__start___jump_table) = .; \
140 - *(__jump_table) \
141 + KEEP(*(__jump_table)) \
142 VMLINUX_SYMBOL(__stop___jump_table) = .; \
143 . = ALIGN(8); \
144 VMLINUX_SYMBOL(__start___verbose) = .; \
145 - *(__verbose) \
146 + KEEP(*(__verbose)) \
147 VMLINUX_SYMBOL(__stop___verbose) = .; \
148 LIKELY_PROFILE() \
149 BRANCH_PROFILE() \
150 TRACE_PRINTKS() \
151 - TRACEPOINT_STR()
152 + TRACEPOINT_STR() \
153 + *(.data.[a-zA-Z_]*)
154
155 /*
156 * Data section helpers
157 @@ -251,35 +252,35 @@
158 /* PCI quirks */ \
159 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
160 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
161 - *(.pci_fixup_early) \
162 + KEEP(*(.pci_fixup_early)) \
163 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
164 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
165 - *(.pci_fixup_header) \
166 + KEEP(*(.pci_fixup_header)) \
167 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
168 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
169 - *(.pci_fixup_final) \
170 + KEEP(*(.pci_fixup_final)) \
171 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
172 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
173 - *(.pci_fixup_enable) \
174 + KEEP(*(.pci_fixup_enable)) \
175 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
176 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
177 - *(.pci_fixup_resume) \
178 + KEEP(*(.pci_fixup_resume)) \
179 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
180 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
181 - *(.pci_fixup_resume_early) \
182 + KEEP(*(.pci_fixup_resume_early)) \
183 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
184 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
185 - *(.pci_fixup_suspend) \
186 + KEEP(*(.pci_fixup_suspend)) \
187 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
188 VMLINUX_SYMBOL(__start_pci_fixups_suspend_late) = .; \
189 - *(.pci_fixup_suspend_late) \
190 + KEEP(*(.pci_fixup_suspend_late)) \
191 VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .; \
192 } \
193 \
194 /* Built-in firmware blobs */ \
195 .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
196 VMLINUX_SYMBOL(__start_builtin_fw) = .; \
197 - *(.builtin_fw) \
198 + KEEP(*(.builtin_fw)) \
199 VMLINUX_SYMBOL(__end_builtin_fw) = .; \
200 } \
201 \
202 @@ -288,49 +289,49 @@
203 /* Kernel symbol table: Normal symbols */ \
204 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
205 VMLINUX_SYMBOL(__start___ksymtab) = .; \
206 - *(SORT(___ksymtab+*)) \
207 + KEEP(*(SORT(___ksymtab+*))) \
208 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
209 } \
210 \
211 /* Kernel symbol table: GPL-only symbols */ \
212 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
213 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
214 - *(SORT(___ksymtab_gpl+*)) \
215 + KEEP(*(SORT(___ksymtab_gpl+*))) \
216 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
217 } \
218 \
219 /* Kernel symbol table: Normal unused symbols */ \
220 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
221 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
222 - *(SORT(___ksymtab_unused+*)) \
223 + KEEP(*(SORT(___ksymtab_unused+*))) \
224 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
225 } \
226 \
227 /* Kernel symbol table: GPL-only unused symbols */ \
228 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
229 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
230 - *(SORT(___ksymtab_unused_gpl+*)) \
231 + KEEP(*(SORT(___ksymtab_unused_gpl+*))) \
232 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
233 } \
234 \
235 /* Kernel symbol table: GPL-future-only symbols */ \
236 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
237 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
238 - *(SORT(___ksymtab_gpl_future+*)) \
239 + KEEP(*(SORT(___ksymtab_gpl_future+*))) \
240 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
241 } \
242 \
243 /* Kernel symbol table: Normal symbols */ \
244 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
245 VMLINUX_SYMBOL(__start___kcrctab) = .; \
246 - *(SORT(___kcrctab+*)) \
247 + KEEP(*(SORT(___kcrctab+*))) \
248 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
249 } \
250 \
251 /* Kernel symbol table: GPL-only symbols */ \
252 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
253 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
254 - *(SORT(___kcrctab_gpl+*)) \
255 + KEEP(*(SORT(___kcrctab_gpl+*))) \
256 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
257 } \
258 \
259 @@ -344,14 +345,14 @@
260 /* Kernel symbol table: GPL-only unused symbols */ \
261 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
262 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
263 - *(SORT(___kcrctab_unused_gpl+*)) \
264 + KEEP(*(SORT(___kcrctab_unused_gpl+*))) \
265 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
266 } \
267 \
268 /* Kernel symbol table: GPL-future-only symbols */ \
269 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
270 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
271 - *(SORT(___kcrctab_gpl_future+*)) \
272 + KEEP(*(SORT(___kcrctab_gpl_future+*))) \
273 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
274 } \
275 \
276 @@ -370,14 +371,14 @@
277 /* Built-in module parameters. */ \
278 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
279 VMLINUX_SYMBOL(__start___param) = .; \
280 - *(__param) \
281 + KEEP(*(__param)) \
282 VMLINUX_SYMBOL(__stop___param) = .; \
283 } \
284 \
285 /* Built-in module versions. */ \
286 __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \
287 VMLINUX_SYMBOL(__start___modver) = .; \
288 - *(__modver) \
289 + KEEP(*(__modver)) \
290 VMLINUX_SYMBOL(__stop___modver) = .; \
291 . = ALIGN((align)); \
292 VMLINUX_SYMBOL(__end_rodata) = .; \
293 @@ -433,7 +434,7 @@
294 #define ENTRY_TEXT \
295 ALIGN_FUNCTION(); \
296 VMLINUX_SYMBOL(__entry_text_start) = .; \
297 - *(.entry.text) \
298 + KEEP(*(.entry.text)) \
299 VMLINUX_SYMBOL(__entry_text_end) = .;
300
301 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
302 @@ -461,7 +462,7 @@
303 . = ALIGN(align); \
304 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \
305 VMLINUX_SYMBOL(__start___ex_table) = .; \
306 - *(__ex_table) \
307 + KEEP(*(__ex_table)) \
308 VMLINUX_SYMBOL(__stop___ex_table) = .; \
309 }
310
311 @@ -477,9 +478,9 @@
312 #ifdef CONFIG_CONSTRUCTORS
313 #define KERNEL_CTORS() . = ALIGN(8); \
314 VMLINUX_SYMBOL(__ctors_start) = .; \
315 - *(.ctors) \
316 + KEEP(*(.ctors)) \
317 *(SORT(.init_array.*)) \
318 - *(.init_array) \
319 + KEEP(*(.init_array)) \
320 VMLINUX_SYMBOL(__ctors_end) = .;
321 #else
322 #define KERNEL_CTORS()
323 @@ -528,7 +529,7 @@
324 #define SBSS(sbss_align) \
325 . = ALIGN(sbss_align); \
326 .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
327 - *(.sbss) \
328 + *(.sbss .sbss.*) \
329 *(.scommon) \
330 }
331
332 @@ -546,7 +547,7 @@
333 BSS_FIRST_SECTIONS \
334 *(.bss..page_aligned) \
335 *(.dynbss) \
336 - *(.bss) \
337 + *(.bss .bss.*) \
338 *(COMMON) \
339 }
340
341 @@ -595,7 +596,7 @@
342 . = ALIGN(8); \
343 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
344 VMLINUX_SYMBOL(__start___bug_table) = .; \
345 - *(__bug_table) \
346 + KEEP(*(__bug_table)) \
347 VMLINUX_SYMBOL(__stop___bug_table) = .; \
348 }
349 #else
350 @@ -607,7 +608,7 @@
351 . = ALIGN(4); \
352 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
353 VMLINUX_SYMBOL(__tracedata_start) = .; \
354 - *(.tracedata) \
355 + KEEP(*(.tracedata)) \
356 VMLINUX_SYMBOL(__tracedata_end) = .; \
357 }
358 #else
359 @@ -624,17 +625,17 @@
360 #define INIT_SETUP(initsetup_align) \
361 . = ALIGN(initsetup_align); \
362 VMLINUX_SYMBOL(__setup_start) = .; \
363 - *(.init.setup) \
364 + KEEP(*(.init.setup)) \
365 VMLINUX_SYMBOL(__setup_end) = .;
366
367 #define INIT_CALLS_LEVEL(level) \
368 VMLINUX_SYMBOL(__initcall##level##_start) = .; \
369 - *(.initcall##level##.init) \
370 - *(.initcall##level##s.init) \
371 + KEEP(*(.initcall##level##.init)) \
372 + KEEP(*(.initcall##level##s.init)) \
373
374 #define INIT_CALLS \
375 VMLINUX_SYMBOL(__initcall_start) = .; \
376 - *(.initcallearly.init) \
377 + KEEP(*(.initcallearly.init)) \
378 INIT_CALLS_LEVEL(0) \
379 INIT_CALLS_LEVEL(1) \
380 INIT_CALLS_LEVEL(2) \
381 @@ -648,21 +649,21 @@
382
383 #define CON_INITCALL \
384 VMLINUX_SYMBOL(__con_initcall_start) = .; \
385 - *(.con_initcall.init) \
386 + KEEP(*(.con_initcall.init)) \
387 VMLINUX_SYMBOL(__con_initcall_end) = .;
388
389 #define SECURITY_INITCALL \
390 VMLINUX_SYMBOL(__security_initcall_start) = .; \
391 - *(.security_initcall.init) \
392 + KEEP(*(.security_initcall.init)) \
393 VMLINUX_SYMBOL(__security_initcall_end) = .;
394
395 #ifdef CONFIG_BLK_DEV_INITRD
396 #define INIT_RAM_FS \
397 . = ALIGN(4); \
398 VMLINUX_SYMBOL(__initramfs_start) = .; \
399 - *(.init.ramfs) \
400 + KEEP(*(.init.ramfs)) \
401 . = ALIGN(8); \
402 - *(.init.ramfs.info)
403 + KEEP(*(.init.ramfs.info))
404 #else
405 #define INIT_RAM_FS
406 #endif
407 --- a/arch/arm/Makefile
408 +++ b/arch/arm/Makefile
409 @@ -18,11 +18,16 @@ ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
410 LDFLAGS_vmlinux += --be8
411 LDFLAGS_MODULE += --be8
412 endif
413 +LDFLAGS_vmlinux += --gc-sections
414
415 OBJCOPYFLAGS :=-O binary -R .comment -S
416 GZFLAGS :=-9
417 #KBUILD_CFLAGS +=-pipe
418
419 +ifndef CONFIG_FUNCTION_TRACER
420 +KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections
421 +endif
422 +
423 # Never generate .eh_frame
424 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
425
426 --- a/arch/arm/kernel/vmlinux.lds.S
427 +++ b/arch/arm/kernel/vmlinux.lds.S
428 @@ -15,13 +15,13 @@
429 #define PROC_INFO \
430 . = ALIGN(4); \
431 VMLINUX_SYMBOL(__proc_info_begin) = .; \
432 - *(.proc.info.init) \
433 + KEEP(*(.proc.info.init)) \
434 VMLINUX_SYMBOL(__proc_info_end) = .;
435
436 #define IDMAP_TEXT \
437 ALIGN_FUNCTION(); \
438 VMLINUX_SYMBOL(__idmap_text_start) = .; \
439 - *(.idmap.text) \
440 + KEEP(*(.idmap.text)) \
441 VMLINUX_SYMBOL(__idmap_text_end) = .; \
442 . = ALIGN(32); \
443 VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \
444 @@ -101,7 +101,7 @@ SECTIONS
445 .text : { /* Real text segment */
446 _stext = .; /* Text and read-only data */
447 __exception_text_start = .;
448 - *(.exception.text)
449 + KEEP(*(.exception.text))
450 __exception_text_end = .;
451 IRQENTRY_TEXT
452 TEXT_TEXT
453 @@ -129,7 +129,7 @@ SECTIONS
454 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
455 __start___ex_table = .;
456 #ifdef CONFIG_MMU
457 - *(__ex_table)
458 + KEEP(*(__ex_table))
459 #endif
460 __stop___ex_table = .;
461 }
462 @@ -141,12 +141,12 @@ SECTIONS
463 . = ALIGN(8);
464 .ARM.unwind_idx : {
465 __start_unwind_idx = .;
466 - *(.ARM.exidx*)
467 + KEEP(*(.ARM.exidx*))
468 __stop_unwind_idx = .;
469 }
470 .ARM.unwind_tab : {
471 __start_unwind_tab = .;
472 - *(.ARM.extab*)
473 + KEEP(*(.ARM.extab*))
474 __stop_unwind_tab = .;
475 }
476 #endif
477 @@ -169,14 +169,14 @@ SECTIONS
478 */
479 __vectors_start = .;
480 .vectors 0 : AT(__vectors_start) {
481 - *(.vectors)
482 + KEEP(*(.vectors))
483 }
484 . = __vectors_start + SIZEOF(.vectors);
485 __vectors_end = .;
486
487 __stubs_start = .;
488 .stubs 0x1000 : AT(__stubs_start) {
489 - *(.stubs)
490 + KEEP(*(.stubs))
491 }
492 . = __stubs_start + SIZEOF(.stubs);
493 __stubs_end = .;
494 @@ -190,24 +190,24 @@ SECTIONS
495 }
496 .init.arch.info : {
497 __arch_info_begin = .;
498 - *(.arch.info.init)
499 + KEEP(*(.arch.info.init))
500 __arch_info_end = .;
501 }
502 .init.tagtable : {
503 __tagtable_begin = .;
504 - *(.taglist.init)
505 + KEEP(*(.taglist.init))
506 __tagtable_end = .;
507 }
508 #ifdef CONFIG_SMP_ON_UP
509 .init.smpalt : {
510 __smpalt_begin = .;
511 - *(.alt.smp.init)
512 + KEEP(*(.alt.smp.init))
513 __smpalt_end = .;
514 }
515 #endif
516 .init.pv_table : {
517 __pv_table_begin = .;
518 - *(.pv_table)
519 + KEEP(*(.pv_table))
520 __pv_table_end = .;
521 }
522 .init.data : {
523 --- a/arch/arm/boot/compressed/Makefile
524 +++ b/arch/arm/boot/compressed/Makefile
525 @@ -122,6 +122,7 @@ ifeq ($(CONFIG_FUNCTION_TRACER),y)
526 ORIG_CFLAGS := $(KBUILD_CFLAGS)
527 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
528 endif
529 +KBUILD_CFLAGS_KERNEL := $(patsubst -f%-sections,,$(KBUILD_CFLAGS_KERNEL))
530
531 ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
532 asflags-y := -DZIMAGE
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