Merge remote-tracking branch 'rust/rust-next'

diff --cc MAINTAINERS
Simple merge

diff --cc Makefile
index d29da2850e38951fb0b3f7c625d5bcdd2f2b68da,c814b209b6c91d28b0915bf7da6b80b612627c0f..476e3fb9feb3f1b74e25123858f2b5b39381d021
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -721,12 -763,11 +763,12 @@@ $(KCONFIG_CONFIG)
  # This exploits the 'multi-target pattern rule' trick.
  # The syncconfig should be executed only once to make all the targets.
  # (Note: use the grouped target '&:' when we bump to GNU Make 4.3)
 -quiet_cmd_syncconfig = SYNC    $@
 -      cmd_syncconfig = $(MAKE) -f $(srctree)/Makefile syncconfig
 -
 +#
 +# Do not use $(call cmd,...) here. That would suppress prompts from syncconfig,
 +# so you cannot notice that Kconfig is waiting for the user input.
- %/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG)
+ %/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h %/generated/rustc_cfg: $(KCONFIG_CONFIG)
 -      +$(call cmd,syncconfig)
 +      $(Q)$(kecho) "  SYNC    $@"
 +      $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
  else # !may-sync-config
  # External modules and some install targets need include/generated/autoconf.h
  # and include/config/auto.conf but do not care if they are up-to-date.
@@@ -810,10 -874,11 +883,11 @@@ endi
  # These warnings generated too much noise in a regular build.
  # Use make W=1 to enable them (see scripts/Makefile.extrawarn)
  KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
 -
  KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
 +
  ifdef CONFIG_FRAME_POINTER
  KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
+ KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y
  else
  # Some targets (ARM with Thumb2, for example), can't be built with frame
  # pointers.  For those, we don't have FUNCTION_TRACER automatically
@@@ -864,8 -926,13 +940,13 @@@ els
  DEBUG_CFLAGS  += -g
  endif
  
 -ifneq ($(LLVM_IAS),1)
 +ifndef CONFIG_AS_IS_LLVM
  KBUILD_AFLAGS += -Wa,-gdwarf-2
+ ifdef CONFIG_DEBUG_INFO_REDUCED
+ DEBUG_RUSTFLAGS += -Cdebuginfo=1
+ else
+ DEBUG_RUSTFLAGS += -Cdebuginfo=2
+ endif
  endif
  
  ifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
@@@ -1222,9 -1327,12 +1311,12 @@@ archprepare: outputmakefile archheader
  prepare0: archprepare
        $(Q)$(MAKE) $(build)=scripts/mod
        $(Q)$(MAKE) $(build)=.
+ ifdef CONFIG_RUST
+       $(Q)$(MAKE) $(build)=rust
+ endif
  
  # All the preparing..
 -prepare: prepare0 prepare-objtool prepare-resolve_btfids
 +prepare: prepare0
  
  PHONY += remove-stale-files
  remove-stale-files:

diff --cc arch/riscv/Makefile
Simple merge

diff --cc include/linux/kallsyms.h
index a1d6fc82d7f0649884f7a098870dd7fdb07f09a1,5cdc6903abca3581474977c8de4965f86598bb01..6851c2313cad94d190b8f9ef26aec195dc1c975c
--- 1/include/linux/kallsyms.h
--- 2/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@@ -15,11 -14,9 +15,11 @@@
  
  #include <asm/sections.h>
  
- #define KSYM_NAME_LEN 128
+ #define KSYM_NAME_LEN 512
 -#define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \
 -                       2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + 1)
 +#define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s %s]") + \
 +                      (KSYM_NAME_LEN - 1) + \
 +                      2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + \
 +                      (BUILD_ID_SIZE_MAX * 2) + 1)
  
  struct cred;
  struct module;

diff --cc include/linux/spinlock.h
Simple merge

diff --cc init/Kconfig
Simple merge

diff --cc kernel/kallsyms.c
Simple merge

diff --cc kernel/printk/printk.c
Simple merge

diff --cc lib/Kconfig.debug
Simple merge

diff --cc lib/vsprintf.c
Simple merge

diff --cc samples/Kconfig
Simple merge

diff --cc scripts/Makefile.build
Simple merge

diff --cc scripts/Makefile.clang
index 4cce8fd0779c7c52edc5eea076297e31b8a31dbd,0000000000000000000000000000000000000000..f88ceb3d076e05f3d0146e7f9894c68d6e1bb3a2
mode 100644,000000..100644
--- 1/scripts/Makefile.clang
--- /dev/null
+++ b/scripts/Makefile.clang
@@@ -1,35 -1,0 +1,40 @@@
- CLANG_FLAGS   += --target=$(CLANG_TARGET_FLAGS)
 +# Individual arch/{arch}/Makefiles should use -EL/-EB to set intended
 +# endianness and -m32/-m64 to set word size based on Kconfigs instead of
 +# relying on the target triple.
 +CLANG_TARGET_FLAGS_arm                := arm-linux-gnueabi
 +CLANG_TARGET_FLAGS_arm64      := aarch64-linux-gnu
 +CLANG_TARGET_FLAGS_hexagon    := hexagon-linux-musl
 +CLANG_TARGET_FLAGS_m68k               := m68k-linux-gnu
 +CLANG_TARGET_FLAGS_mips               := mipsel-linux-gnu
 +CLANG_TARGET_FLAGS_powerpc    := powerpc64le-linux-gnu
 +CLANG_TARGET_FLAGS_riscv      := riscv64-linux-gnu
 +CLANG_TARGET_FLAGS_s390               := s390x-linux-gnu
 +CLANG_TARGET_FLAGS_x86                := x86_64-linux-gnu
 +CLANG_TARGET_FLAGS            := $(CLANG_TARGET_FLAGS_$(SRCARCH))
 +
++TENTATIVE_CLANG_FLAGS := -Werror=unknown-warning-option
++
 +ifeq ($(CROSS_COMPILE),)
 +ifeq ($(CLANG_TARGET_FLAGS),)
 +$(error Specify CROSS_COMPILE or add '--target=' option to scripts/Makefile.clang)
 +else
- CLANG_FLAGS   += --target=$(notdir $(CROSS_COMPILE:%-=%))
++TENTATIVE_CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS)
 +endif # CLANG_TARGET_FLAGS
 +else
- CLANG_FLAGS   += -fno-integrated-as
++TENTATIVE_CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
 +endif # CROSS_COMPILE
 +
 +ifeq ($(LLVM_IAS),0)
- CLANG_FLAGS   += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
++TENTATIVE_CLANG_FLAGS += -fno-integrated-as
 +GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
- CLANG_FLAGS   += -fintegrated-as
++TENTATIVE_CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
 +else
- CLANG_FLAGS   += -Werror=unknown-warning-option
++TENTATIVE_CLANG_FLAGS += -fintegrated-as
 +endif
++
++export TENTATIVE_CLANG_FLAGS
++
++CLANG_FLAGS   += $(TENTATIVE_CLANG_FLAGS)
 +KBUILD_CFLAGS += $(CLANG_FLAGS)
 +KBUILD_AFLAGS += $(CLANG_FLAGS)
 +export CLANG_FLAGS

diff --cc scripts/Makefile.lib
Simple merge