Heiko Carstens 5c12187386 s390/preempt: disable __preempt_count_add() optimization for PROFILE_ALL_BRANCHES ... [ Upstream commit 63678eecec ] gcc 12 does not (always) optimize away code that should only be generated if parameters are constant and within in a certain range. This depends on various obscure kernel config options, however in particular PROFILE_ALL_BRANCHES can trigger this compile error: In function ‘__atomic_add_const’, inlined from ‘__preempt_count_add.part.0’ at ./arch/s390/include/asm/preempt.h:50:3: ./arch/s390/include/asm/atomic_ops.h:80:9: error: impossible constraint in ‘asm’ 80 | asm volatile( \ | ^~~ Workaround this by simply disabling the optimization for PROFILE_ALL_BRANCHES, since the kernel will be so slow, that this optimization won't matter at all. Reported-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-06-09 10:25:25 +02:00
..
appldata	s390/appldata: use struct_size() helper	2020-06-29 16:32:34 +02:00
boot	arch: decompressor: remove useless vmlinux.bin.all-y	2022-01-14 02:55:44 +09:00
configs	s390: update defconfigs	2022-01-24 09:10:59 +01:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2022-01-11 10:21:35 -08:00
hypfs	s390/hypfs: include z/VM guests with access control group set	2022-01-26 18:42:39 +01:00
include	s390/preempt: disable __preempt_count_add() optimization for PROFILE_ALL_BRANCHES	2022-06-09 10:25:25 +02:00
kernel	s390/traps: improve panic message for translation-specification exception	2022-05-25 09:59:00 +02:00
kvm	KVM: s390x: fix SCK locking	2022-04-08 13:57:30 +02:00
lib	s390/module: fix building test_modules_helpers.o with clang	2022-02-06 23:30:37 +01:00
mm	Merge branch 'akpm' (patches from Andrew)	2022-01-15 20:37:06 +02:00
net	bpf: Change value of MAX_TAIL_CALL_CNT from 32 to 33	2021-11-16 14:03:15 +01:00
pci	s390/pci: improve zpci_dev reference counting	2022-05-25 09:59:00 +02:00
purgatory	s390: enable KCSAN	2021-07-30 17:09:23 +02:00
tools	s390/disassembler: update opcode table	2021-12-16 19:58:07 +01:00
Kbuild	kbuild: use more subdir- for visiting subdirectories while cleaning	2021-10-24 13:49:46 +09:00
Kconfig	s390/module: test loading modules with a lot of relocations	2022-01-24 09:10:59 +01:00
Kconfig.debug	tracing: Refactor TRACE_IRQFLAGS_SUPPORT in Kconfig	2021-08-16 11:37:21 -04:00
Makefile	s390: disable -Warray-bounds	2022-05-18 10:28:17 +02:00