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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 09:21:06 +0100 |
| commit | 2a6e9df11190aba32113d4e8122d7da6422b5044 (patch) | |
| tree | d9597ea88e1611b04907d18522decb002b9dc9e3 /kernel | |
| parent | ae9aff4a09036c1f34afc41d459194770da09031 (diff) | |
| download | linux-stable-2a6e9df11190aba32113d4e8122d7da6422b5044.tar.gz linux-stable-2a6e9df11190aba32113d4e8122d7da6422b5044.tar.bz2 linux-stable-2a6e9df11190aba32113d4e8122d7da6422b5044.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 'kernel')
| -rw-r--r-- | kernel/Makefile | 1 | ||||
| -rw-r--r-- | kernel/elfcore.c | 26 |
2 files changed, 0 insertions, 27 deletions
diff --git a/kernel/Makefile b/kernel/Makefile index ad4b324d8906..01bc1d39b400 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -92,7 +92,6 @@ obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o obj-$(CONFIG_TRACEPOINTS) += tracepoint.o obj-$(CONFIG_LATENCYTOP) += latencytop.o -obj-$(CONFIG_ELFCORE) += elfcore.o obj-$(CONFIG_FUNCTION_TRACER) += trace/ obj-$(CONFIG_TRACING) += trace/ obj-$(CONFIG_TRACE_CLOCK) += trace/ diff --git a/kernel/elfcore.c b/kernel/elfcore.c deleted file mode 100644 index 57fb4dcff434..000000000000 --- a/kernel/elfcore.c +++ /dev/null @@ -1,26 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/elf.h> -#include <linux/fs.h> -#include <linux/mm.h> -#include <linux/binfmts.h> -#include <linux/elfcore.h> - -Elf_Half __weak elf_core_extra_phdrs(void) -{ - return 0; -} - -int __weak elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset) -{ - return 1; -} - -int __weak elf_core_write_extra_data(struct coredump_params *cprm) -{ - return 1; -} - -size_t __weak elf_core_extra_data_size(void) -{ - return 0; -} |