diff options
| author | Peter Foley | 2023-01-13 12:03:00 -0500 |
|---|---|---|
| committer | Richard Weinberger | 2023-02-13 10:14:31 +0100 |
| commit | 83e913f52aba69149261742aa9ea4ceea7bf182d (patch) | |
| tree | 5193ef9b2936fc2074369a5042a57e4efe985934 /arch/um | |
| parent | f09c3fcf67a3294c981b861981143e38895c5a59 (diff) | |
um: Support LTO
Only a handful of changes are necessary to get it to work.
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/Kconfig | 2 | ||||
| -rw-r--r-- | arch/um/Makefile | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index dc36ea6e508f..541a9b18e343 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -25,6 +25,8 @@ config UML select GENERIC_IRQ_SHOW select GENERIC_CPU_DEVICES select HAVE_GCC_PLUGINS + select ARCH_SUPPORTS_LTO_CLANG + select ARCH_SUPPORTS_LTO_CLANG_THIN select TRACE_IRQFLAGS_SUPPORT select TTY # Needed for line.c select HAVE_ARCH_VMAP_STACK diff --git a/arch/um/Makefile b/arch/um/Makefile index d37cac5d9f43..8186d4761bda 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -144,7 +144,7 @@ endif LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS) $(LDFLAGS_EXECSTACK),-Wl,$(opt)) # Used by link-vmlinux.sh which has special support for um link -export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) +export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) $(CC_FLAGS_LTO) # When cleaning we don't include .config, so we don't include # TT or skas makefiles and don't clean skas_ptregs.h. |