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Masahiro Yamada 4c56eb33e6 kbuild: keep symbols for symbol_get() even with CONFIG_TRIM_UNUSED_KSYMS ... Linus observed that the symbol_request(utf8_data_table) call fails when CONFIG_UNICODE=y and CONFIG_TRIM_UNUSED_KSYMS=y. symbol_get() relies on the symbol data being present in the ksymtab for symbol lookups. However, EXPORT_SYMBOL_GPL(utf8_data_table) is dropped due to CONFIG_TRIM_UNUSED_KSYMS, as no module references it in this case. Probably, this has been broken since commit dbacb0ef67 ("kconfig option for TRIM_UNUSED_KSYMS"). This commit addresses the issue by leveraging modpost. Symbol names passed to symbol_get() are recorded in the special .no_trim_symbol section, which is then parsed by modpost to forcibly keep such symbols. The .no_trim_symbol section is discarded by the linker scripts, so there is no impact on the size of the final vmlinux or modules. This commit cannot resolve the issue for direct calls to __symbol_get() because the symbol name is not known at compile-time. Although symbol_get() may eventually be deprecated, this workaround should be good enough meanwhile. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>		History 2025-02-06 01:08:58 +09:00
..
bitops
vdso
access_ok.h	uaccess: remove CONFIG_SET_FS	2022-02-25 09:36:06 +01:00
agp.h	char/agp: introduce asm-generic/agp.h	2023-02-13 22:13:29 +01:00
archrandom.h	random: handle archrandom with multiple longs	2022-07-25 13:26:14 +02:00
asm-offsets.h
asm-prototypes.h
atomic.h
atomic64.h
audit_change_attr.h	fs/xattr: add *at family syscalls	2024-11-06 12:59:44 -05:00
audit_dir_write.h	audit: Avoid build failures on systems without renameat	2018-01-30 19:07:54 -08:00
audit_read.h
audit_signal.h
audit_write.h	audit/stable-4.15 PR 20171113	2017-11-15 13:28:48 -08:00
barrier.h	sched: Add missing memory barrier in switch_mm_cid	2024-04-16 13:59:45 +02:00
bitops.h	include: move find.h from asm_generic to linux	2022-01-15 08:47:31 -08:00
bitsperlong.h	lib: extend the scope of small_const_nbits() macro	2021-05-06 19:24:11 -07:00
bug.h	bug: Improve comment	2024-05-07 14:20:48 +02:00
cache.h
cacheflush.h	mm: Introduce flush_cache_vmap_early()	2023-12-14 00:23:17 -08:00
cfi.h	cfi: Flip headers	2023-12-15 16:25:55 -08:00
checksum.h	asm-generic: Improve csum_fold	2024-01-17 17:52:29 -08:00
cmpxchg-local.h	asm-generic: Fix 32 bit __generic_cmpxchg_local	2024-01-05 23:19:14 +01:00
cmpxchg.h
codetag.lds.h
compat.h	asm-generic: compat: fix compat_arg_u64() and compat_arg_u64_dual()	2022-11-01 10:20:11 +11:00
current.h	asm-generic: current: Don't include thread-info.h if building asm	2023-08-26 22:38:49 +02:00
delay.h
device.h
div64.h	__arch_xprod64(): make __always_inline when optimizing for performance	2024-10-28 21:44:28 +00:00
dma-mapping.h	dma-mapping: no need to pass a bus_type into get_arch_dma_ops()	2023-02-15 12:35:20 +01:00
dma.h
early_ioremap.h
emergency-restart.h
error-injection.h
exec.h
extable.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
fixmap.h
flat.h	binfmt_flat: remove the persistent argument from flat_get_addr_from_rp	2019-06-24 09:16:47 +10:00
fprobe.h
ftrace.h
futex.h
getorder.h	asm-generic: force inlining of get_order() to work around gcc10 poor decision	2020-12-15 22:46:15 -08:00
hardirq.h
hugetlb.h	mm: consolidate common checks in hugetlb_get_unmapped_area	2024-11-06 20:11:10 -08:00
hw_irq.h
int-ll64.h	int-ll64.h: define u{8,16,32,64} and s{8,16,32,64} based on uapi header	2018-06-07 17:34:38 -07:00
io.h	New implementation for IO memcpy and IO memset	2024-10-28 21:44:29 +00:00
ioctl.h
iomap.h
irq.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irq_regs.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
irq_work.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irqflags.h
Kbuild
kdebug.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kmap_size.h	mm/highmem: Provide and use CONFIG_DEBUG_KMAP_LOCAL	2020-11-24 14:42:08 +01:00
kprobes.h	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
kvm_para.h	KVM: Introduce paravirtualization hints and KVM_HINTS_DEDICATED	2018-03-06 18:40:44 +01:00
kvm_types.h
linkage.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
local.h
local64.h
logic_io.h	logic_io instance of iounmap() needs volatile on argument	2021-12-21 21:31:08 +01:00
mcs_spinlock.h	locking/mcs: Allow architecture specific asm files to be used for contended case	2014-02-09 21:18:52 +01:00
memory_model.h	asm-generic: add an optional pfn_valid check to page_to_phys	2024-10-28 21:44:28 +00:00
mm_hooks.h
mmiowb.h	asm-generic/mmiowb: Allow mmiowb_set_pending() when preemptible()	2020-07-17 10:02:03 +01:00
mmiowb_types.h	asm-generic/mmiowb: Add generic implementation of mmiowb() tracking	2019-04-08 11:59:39 +01:00
mmu.h
mmu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
mmzone.h	arch, mm: move definition of node_data to generic code	2024-09-03 21:15:28 -07:00
module.h
module.lds.h
mshyperv.h	hyperv: Switch from hyperv-tlfs.h to hyperv/hvhdk.h	2025-01-10 00:54:21 +00:00
msi.h	genirq: Get rid of GENERIC_MSI_IRQ_DOMAIN	2022-11-17 15:15:20 +01:00
nommu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
numa.h
param.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
parport.h
pci.h
pci_iomap.h	PCI: Stub __pci_ioport_map() for arches that don't support it at all	2022-07-29 12:01:00 -05:00
percpu.h
pgalloc.h	mm: introduce ctor/dtor at PGD level	2025-01-25 20:22:24 -08:00
pgtable-nop4d.h	mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *	2021-07-08 11:48:22 -07:00
pgtable-nopmd.h	mm: recover pud_leaf() definitions in nopmd case	2024-03-13 12:12:21 -07:00
pgtable-nopud.h
pgtable_uffd.h	userfaultfd: wp: add pmd_swp_*uffd_wp() helpers	2020-04-07 10:43:39 -07:00
preempt.h
qrwlock.h	asm-generic changes for 5.19	2022-05-26 10:50:30 -07:00
qrwlock_types.h	locking/qrwlock: Change "queue rwlock" to "queued rwlock"	2022-05-11 16:27:04 +02:00
qspinlock.h	riscv: Add qspinlock support	2024-11-11 07:33:20 -08:00
qspinlock_types.h
resource.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
runtime-const.h
rwonce.h	asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'	2020-07-21 10:50:36 +01:00
seccomp.h	seccomp: Use -1 marker for end of mode 1 syscall list	2020-07-10 16:01:52 -07:00
sections.h
serial.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
set_memory.h
shmparam.h
signal.h
simd.h
softirq_stack.h	asm-generic: Conditionally enable do_softirq_own_stack() via Kconfig.	2022-09-05 17:20:55 +02:00
spinlock.h
spinlock_types.h
statfs.h
string.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
switch_to.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
syscall.h	include: update references to include/asm-<arch>	2025-01-12 20:20:59 -08:00
syscalls.h
text-patching.h	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
ticket_spinlock.h	riscv: Add qspinlock support	2024-11-11 07:33:20 -08:00
timex.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
tlb.h	mm: pgtable: introduce generic pagetable_dtor_free()	2025-01-25 20:22:23 -08:00
tlbflush.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
topology.h
trace_clock.h
uaccess.h	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
user.h	asm-generic/user.h: Fix spelling in comment	2011-03-01 15:49:39 +01:00
vermagic.h
vga.h
video.h	arch: Rename fbdev header and source files	2024-05-03 17:07:50 +02:00
vmlinux.lds.h	kbuild: keep symbols for symbol_get() even with CONFIG_TRIM_UNUSED_KSYMS	2025-02-06 01:08:58 +09:00
word-at-a-time.h
xor.h	lib/xor: make xor prototypes more friendly to compiler vectorization	2022-02-11 20:39:39 +11:00