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| author | Arnd Bergmann <arnd@arndb.de> | 2020-12-11 13:36:46 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-10 09:09:25 +0100 |
| commit | f54be213e213e93a780fde5e383acc021ec3f781 (patch) | |
| tree | 787fd9d47f4ea771a9c9fefa0a1e05eed27cbfa5 /include/linux/elfcore.h | |
| parent | 36b509283ae293aaacccaa47aa729fbd5a7e83a5 (diff) | |
| download | linux-stable-f54be213e213e93a780fde5e383acc021ec3f781.tar.gz linux-stable-f54be213e213e93a780fde5e383acc021ec3f781.tar.bz2 linux-stable-f54be213e213e93a780fde5e383acc021ec3f781.zip | |
elfcore: fix building with clang
commit 6e7b64b9dd6d96537d816ea07ec26b7dedd397b9 upstream.
kernel/elfcore.c only contains weak symbols, which triggers a bug with
clang in combination with recordmcount:
Cannot find symbol for section 2: .text.
kernel/elfcore.o: failed
Move the empty stubs into linux/elfcore.h as inline functions. As only
two architectures use these, just use the architecture specific Kconfig
symbols to key off the declaration.
Link: https://lkml.kernel.org/r/20201204165742.3815221-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Barret Rhoden <brho@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/elfcore.h')
| -rw-r--r-- | include/linux/elfcore.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h index 698d51a0eea3..4adf7faeaeb5 100644 --- a/include/linux/elfcore.h +++ b/include/linux/elfcore.h @@ -55,6 +55,7 @@ static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregse } #endif +#if defined(CONFIG_UM) || defined(CONFIG_IA64) /* * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out * extra segments containing the gate DSO contents. Dumping its @@ -69,5 +70,26 @@ elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset); extern int elf_core_write_extra_data(struct coredump_params *cprm); extern size_t elf_core_extra_data_size(void); +#else +static inline Elf_Half elf_core_extra_phdrs(void) +{ + return 0; +} + +static inline int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset) +{ + return 1; +} + +static inline int elf_core_write_extra_data(struct coredump_params *cprm) +{ + return 1; +} + +static inline size_t elf_core_extra_data_size(void) +{ + return 0; +} +#endif #endif /* _LINUX_ELFCORE_H */ |