Merge tag 'rust-6.9' of https://github.com/Rust-for-Linux/linux

Pull Rust updates from Miguel Ojeda:
 "Another routine one in terms of features. We got two version upgrades
  this time, but in terms of lines, 'alloc' changes are not very large.

  Toolchain and infrastructure:

   - Upgrade to Rust 1.76.0

     This time around, due to how the kernel and Rust schedules have
     aligned, there are two upgrades in fact. These allow us to remove
     two more unstable features ('const_maybe_uninit_zeroed' and
     'ptr_metadata') from the list, among other improvements

   - Mark 'rustc' (and others) invocations as recursive, which fixes a
     new warning and prepares us for the future in case we eventually
     take advantage of the Make jobserver

  'kernel' crate:

   - Add the 'container_of!' macro

   - Stop using the unstable 'ptr_metadata' feature by employing the now
     stable 'byte_sub' method to implement 'Arc::from_raw()'

   - Add the 'time' module with a 'msecs_to_jiffies()' conversion
     function to begin with, to be used by Rust Binder

   - Add 'notify_sync()' and 'wait_interruptible_timeout()' methods to
     'CondVar', to be used by Rust Binder

   - Update integer types for 'CondVar'

   - Rename 'wait_list' field to 'wait_queue_head' in 'CondVar'

   - Implement 'Display' and 'Debug' for 'BStr'

   - Add the 'try_from_foreign()' method to the 'ForeignOwnable' trait

   - Add reexports for macros so that they can be used from the right
     module (in addition to the root)

   - A series of code documentation improvements, including adding
     intra-doc links, consistency improvements, typo fixes...

  'macros' crate:

   - Place generated 'init_module()' function in '.init.text'

  Documentation:

   - Add documentation on Rust doctests and how they work"

* tag 'rust-6.9' of https://github.com/Rust-for-Linux/linux: (29 commits)
  rust: upgrade to Rust 1.76.0
  kbuild: mark `rustc` (and others) invocations as recursive
  rust: add `container_of!` macro
  rust: str: implement `Display` and `Debug` for `BStr`
  rust: module: place generated init_module() function in .init.text
  rust: types: add `try_from_foreign()` method
  docs: rust: Add description of Rust documentation test as KUnit ones
  docs: rust: Move testing to a separate page
  rust: kernel: stop using ptr_metadata feature
  rust: kernel: add reexports for macros
  rust: locked_by: shorten doclink preview
  rust: kernel: remove unneeded doclink targets
  rust: kernel: add doclinks
  rust: kernel: add blank lines in front of code blocks
  rust: kernel: mark code fragments in docs with backticks
  rust: kernel: unify spelling of refcount in docs
  rust: str: move SAFETY comment in front of unsafe block
  rust: str: use `NUL` instead of 0 in doc comments
  rust: kernel: add srctree-relative doclinks
  rust: ioctl: end top-level module docs with full stop
  ...

1 files changed, 24 insertions, 24 deletions

diff --git a/rust/Makefile b/rust/Makefile
index 9d2a16cc91cb..a78fcf4004b0 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -40,7 +40,7 @@ obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.o
 ifdef CONFIG_RUST
 
 # `$(rust_flags)` is passed in case the user added `--sysroot`.
-rustc_sysroot := $(shell $(RUSTC) $(rust_flags) --print sysroot)
+rustc_sysroot := $(shell MAKEFLAGS= $(RUSTC) $(rust_flags) --print sysroot)
 rustc_host_target := $(shell $(RUSTC) --version --verbose | grep -F 'host: ' | cut -d' ' -f2)
 RUST_LIB_SRC ?= $(rustc_sysroot)/lib/rustlib/src/rust/library
 
@@ -108,14 +108,14 @@ rustdoc-macros: private rustdoc_host = yes
 rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \
     --extern proc_macro
 rustdoc-macros: $(src)/macros/lib.rs FORCE
-	$(call if_changed,rustdoc)
+	+$(call if_changed,rustdoc)
 
 rustdoc-core: private rustc_target_flags = $(core-cfgs)
 rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE
-	$(call if_changed,rustdoc)
+	+$(call if_changed,rustdoc)
 
 rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE
-	$(call if_changed,rustdoc)
+	+$(call if_changed,rustdoc)
 
 # We need to allow `rustdoc::broken_intra_doc_links` because some
 # `no_global_oom_handling` functions refer to non-`no_global_oom_handling`
@@ -124,7 +124,7 @@ rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE
 rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \
     -Arustdoc::broken_intra_doc_links
 rustdoc-alloc: $(src)/alloc/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE
-	$(call if_changed,rustdoc)
+	+$(call if_changed,rustdoc)
 
 rustdoc-kernel: private rustc_target_flags = --extern alloc \
     --extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \
@@ -132,7 +132,7 @@ rustdoc-kernel: private rustc_target_flags = --extern alloc \
 rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \
     rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \
     $(obj)/bindings.o FORCE
-	$(call if_changed,rustdoc)
+	+$(call if_changed,rustdoc)
 
 quiet_cmd_rustc_test_library = RUSTC TL $<
       cmd_rustc_test_library = \
@@ -146,18 +146,18 @@ quiet_cmd_rustc_test_library = RUSTC TL $<
 		--crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $<
 
 rusttestlib-build_error: $(src)/build_error.rs rusttest-prepare FORCE
-	$(call if_changed,rustc_test_library)
+	+$(call if_changed,rustc_test_library)
 
 rusttestlib-macros: private rustc_target_flags = --extern proc_macro
 rusttestlib-macros: private rustc_test_library_proc = yes
 rusttestlib-macros: $(src)/macros/lib.rs rusttest-prepare FORCE
-	$(call if_changed,rustc_test_library)
+	+$(call if_changed,rustc_test_library)
 
 rusttestlib-bindings: $(src)/bindings/lib.rs rusttest-prepare FORCE
-	$(call if_changed,rustc_test_library)
+	+$(call if_changed,rustc_test_library)
 
 rusttestlib-uapi: $(src)/uapi/lib.rs rusttest-prepare FORCE
-	$(call if_changed,rustc_test_library)
+	+$(call if_changed,rustc_test_library)
 
 quiet_cmd_rustdoc_test = RUSTDOC T $<
       cmd_rustdoc_test = \
@@ -189,7 +189,7 @@ quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $<
     $(src)/kernel/lib.rs $(obj)/kernel.o \
     $(objtree)/scripts/rustdoc_test_builder \
     $(objtree)/scripts/rustdoc_test_gen FORCE
-	$(call if_changed,rustdoc_test_kernel)
+	+$(call if_changed,rustdoc_test_kernel)
 
 # We cannot use `-Zpanic-abort-tests` because some tests are dynamic,
 # so for the moment we skip `-Cpanic=abort`.
@@ -254,21 +254,21 @@ quiet_cmd_rustsysroot = RUSTSYSROOT
 		$(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib
 
 rusttest-prepare: FORCE
-	$(call if_changed,rustsysroot)
+	+$(call if_changed,rustsysroot)
 
 rusttest-macros: private rustc_target_flags = --extern proc_macro
 rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro
 rusttest-macros: $(src)/macros/lib.rs rusttest-prepare FORCE
-	$(call if_changed,rustc_test)
-	$(call if_changed,rustdoc_test)
+	+$(call if_changed,rustc_test)
+	+$(call if_changed,rustdoc_test)
 
 rusttest-kernel: private rustc_target_flags = --extern alloc \
     --extern build_error --extern macros --extern bindings --extern uapi
 rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \
     rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \
     rusttestlib-uapi FORCE
-	$(call if_changed,rustc_test)
-	$(call if_changed,rustc_test_library)
+	+$(call if_changed,rustc_test)
+	+$(call if_changed,rustc_test_library)
 
 ifdef CONFIG_CC_IS_CLANG
 bindgen_c_flags = $(c_flags)
@@ -396,7 +396,7 @@ quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@
 # Therefore, to get `libmacros.so` automatically recompiled when the compiler
 # version changes, we add `core.o` as a dependency (even if it is not needed).
 $(obj)/libmacros.so: $(src)/macros/lib.rs $(obj)/core.o FORCE
-	$(call if_changed_dep,rustc_procmacro)
+	+$(call if_changed_dep,rustc_procmacro)
 
 quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@
       cmd_rustc_library = \
@@ -435,36 +435,36 @@ $(obj)/core.o: private skip_flags = -Dunreachable_pub
 $(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym))
 $(obj)/core.o: private rustc_target_flags = $(core-cfgs)
 $(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs scripts/target.json FORCE
-	$(call if_changed_dep,rustc_library)
+	+$(call if_changed_dep,rustc_library)
 
 $(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*'
 $(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE
-	$(call if_changed_dep,rustc_library)
+	+$(call if_changed_dep,rustc_library)
 
 $(obj)/alloc.o: private skip_clippy = 1
 $(obj)/alloc.o: private skip_flags = -Dunreachable_pub
 $(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs)
 $(obj)/alloc.o: $(src)/alloc/lib.rs $(obj)/compiler_builtins.o FORCE
-	$(call if_changed_dep,rustc_library)
+	+$(call if_changed_dep,rustc_library)
 
 $(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE
-	$(call if_changed_dep,rustc_library)
+	+$(call if_changed_dep,rustc_library)
 
 $(obj)/bindings.o: $(src)/bindings/lib.rs \
     $(obj)/compiler_builtins.o \
     $(obj)/bindings/bindings_generated.rs \
     $(obj)/bindings/bindings_helpers_generated.rs FORCE
-	$(call if_changed_dep,rustc_library)
+	+$(call if_changed_dep,rustc_library)
 
 $(obj)/uapi.o: $(src)/uapi/lib.rs \
     $(obj)/compiler_builtins.o \
     $(obj)/uapi/uapi_generated.rs FORCE
-	$(call if_changed_dep,rustc_library)
+	+$(call if_changed_dep,rustc_library)
 
 $(obj)/kernel.o: private rustc_target_flags = --extern alloc \
     --extern build_error --extern macros --extern bindings --extern uapi
 $(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \
     $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE
-	$(call if_changed_dep,rustc_library)
+	+$(call if_changed_dep,rustc_library)
 
 endif # CONFIG_RUST