Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 813 insertions, 0 deletions

diff --git a/rust/Makefile b/rust/Makefile
new file mode 100644
index 000000000..48adcd9b7
--- /dev/null
+++ b/rust/Makefile
@@ -0,0 +1,813 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# Where to place rustdoc generated documentation
+rustdoc_output := $(objtree)/Documentation/output/rust/rustdoc
+
+# Clean generated host directory
+clean-files := host/
+
+obj-$(CONFIG_RUST) += core.o compiler_builtins.o ffi.o
+always-$(CONFIG_RUST) += exports_core_generated.h
+
+obj-$(CONFIG_RUST) += zerocopy.o
+
+ifdef CONFIG_RUST_INLINE_HELPERS
+always-$(CONFIG_RUST) += helpers/helpers.bc helpers/helpers_module.bc
+else
+obj-$(CONFIG_RUST) += helpers/helpers.o
+always-$(CONFIG_RUST) += exports_helpers_generated.h
+endif
+# Missing prototypes are expected in the helpers since these are exported
+# for Rust only, thus there is no header nor prototypes.
+CFLAGS_REMOVE_helpers/helpers.o = -Wmissing-prototypes -Wmissing-declarations
+
+always-$(CONFIG_RUST) += bindings/bindings_generated.rs bindings/bindings_helpers_generated.rs
+obj-$(CONFIG_RUST) += bindings.o pin_init.o kernel.o
+always-$(CONFIG_RUST) += exports_bindings_generated.h exports_kernel_generated.h
+
+always-$(CONFIG_RUST) += uapi/uapi_generated.rs
+obj-$(CONFIG_RUST) += uapi.o
+
+ifdef CONFIG_RUST_BUILD_ASSERT_ALLOW
+obj-$(CONFIG_RUST) += build_error.o
+else
+always-$(CONFIG_RUST) += build_error.o
+endif
+
+obj-$(CONFIG_RUST) += exports.o
+
+always-$(CONFIG_RUST) += host/libproc_macro2.rlib host/libquote.rlib host/libsyn.rlib
+
+always-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated.rs
+always-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.c
+
+obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated.o
+obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.o
+
+always-$(subst y,$(CONFIG_RUST),$(CONFIG_JUMP_LABEL)) += kernel/generated_arch_static_branch_asm.rs
+ifndef CONFIG_UML
+always-$(subst y,$(CONFIG_RUST),$(CONFIG_BUG)) += kernel/generated_arch_warn_asm.rs kernel/generated_arch_reachable_asm.rs
+endif
+
+# Avoids running `$(RUSTC)` when it may not be available.
+ifdef CONFIG_RUST
+
+procmacro-name = $(shell MAKEFLAGS= $(RUSTC) --print file-names --crate-name $(1) --crate-type proc-macro - </dev/null)
+procmacro-extension := $(patsubst libname.%,%,$(call procmacro-name,name))
+
+libzerocopy_derive_name := $(call procmacro-name,zerocopy_derive)
+libmacros_name := $(call procmacro-name,macros)
+libpin_init_internal_name := $(call procmacro-name,pin_init_internal)
+
+always-$(CONFIG_RUST) += $(libzerocopy_derive_name) $(libmacros_name) $(libpin_init_internal_name)
+
+# `$(rust_flags)` is passed in case the user added `--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 ?= $(rustc_sysroot)/lib/rustlib/src/rust/library
+
+ifneq ($(quiet),)
+rust_test_quiet=-q
+rustdoc_test_quiet=--test-args -q
+rustdoc_test_kernel_quiet=>/dev/null
+endif
+
+cfgs-to-flags = $(patsubst %,--cfg='%',$1)
+
+core-cfgs := \
+    no_fp_fmt_parse
+
+core-edition := $(if $(call rustc-min-version,108700),2024,2021)
+
+core-skip_flags := \
+    --edition=2021 \
+    -Wunreachable_pub
+
+core-flags := \
+    --edition=$(core-edition) \
+    $(call cfgs-to-flags,$(core-cfgs))
+
+zerocopy-cfgs := \
+    no_fp_fmt_parse
+
+zerocopy-flags := \
+    --cap-lints=allow \
+    $(call cfgs-to-flags,$(zerocopy-cfgs))
+
+zerocopy-envs := \
+    CARGO_PKG_VERSION=0.8.54
+
+proc_macro2-cfgs := \
+    feature="proc-macro" \
+    wrap_proc_macro \
+    $(if $(call rustc-min-version,108800),proc_macro_span_file proc_macro_span_location)
+
+proc_macro2-flags := \
+    --cap-lints=allow \
+    $(call cfgs-to-flags,$(proc_macro2-cfgs))
+
+quote-cfgs := \
+    feature="proc-macro"
+
+quote-skip_flags := \
+    --edition=2021
+
+quote-flags := \
+    --edition=2018 \
+    --cap-lints=allow \
+    --extern proc_macro2 \
+    $(call cfgs-to-flags,$(quote-cfgs))
+
+# `extra-traits`, `fold` and `visit` may be enabled if needed.
+syn-cfgs := \
+    feature="clone-impls" \
+    feature="derive" \
+    feature="full" \
+    feature="parsing" \
+    feature="printing" \
+    feature="proc-macro" \
+    feature="visit" \
+    feature="visit-mut"
+
+syn-flags := \
+    --cap-lints=allow \
+    --extern proc_macro2 \
+    --extern quote \
+    $(call cfgs-to-flags,$(syn-cfgs))
+
+zerocopy_derive-cfgs := \
+    zerocopy_unstable_linux
+
+zerocopy_derive-flags := \
+    --cap-lints=allow \
+    --extern proc_macro2 \
+    --extern quote \
+    --extern syn \
+    $(call cfgs-to-flags,$(zerocopy_derive-cfgs))
+
+pin_init_internal-cfgs := \
+    kernel USE_RUSTC_FEATURES
+
+pin_init_internal-flags := \
+    --extern proc_macro2 \
+    --extern quote \
+    --extern syn \
+    $(call cfgs-to-flags,$(pin_init_internal-cfgs))
+
+pin_init-cfgs := \
+    kernel USE_RUSTC_FEATURES
+
+pin_init-flags := \
+    --extern pin_init_internal \
+    --extern macros \
+    $(call cfgs-to-flags,$(pin_init-cfgs))
+
+# `rustdoc` did not save the target modifiers, thus workaround for
+# the time being (https://github.com/rust-lang/rust/issues/144521).
+rustdoc_modifiers_workaround := $(if $(call rustc-min-version,108800),-Cunsafe-allow-abi-mismatch=fixed-x18)
+
+# Similarly, for doctests (https://github.com/rust-lang/rust/issues/146465).
+doctests_modifiers_workaround := $(rustdoc_modifiers_workaround)$(if $(call rustc-min-version,109100),$(comma)sanitizer)
+
+quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $<
+      cmd_rustdoc = \
+	$(rustc_target_envs) \
+	OBJTREE=$(abspath $(objtree)) \
+	$(RUSTDOC) $(filter-out $(skip_flags) --remap-path-scope=%,$(if $(rustdoc_host),$(rust_common_flags),$(rust_flags))) \
+		$(rustc_target_flags) -L$(objtree)/$(obj)$(if $(rustdoc_host),/host) \
+		-Zunstable-options --generate-link-to-definition \
+		--output $(rustdoc_output) \
+		--crate-name $(subst rustdoc-,,$@) \
+		$(rustdoc_modifiers_workaround) \
+		$(if $(rustdoc_host),,--sysroot=/dev/null) \
+		@$(objtree)/include/generated/rustc_cfg $<
+
+# The `html_logo_url` and `html_favicon_url` forms of the `doc` attribute
+# can be used to specify a custom logo. However:
+#   - The given value is used as-is, thus it cannot be relative or a local file
+#     (unlike the non-custom case) since the generated docs have subfolders.
+#   - It requires adding it to every crate.
+#   - It requires changing `core` which comes from the sysroot.
+#
+# Using `-Zcrate-attr` would solve the last two points, but not the first.
+# The https://github.com/rust-lang/rfcs/pull/3226 RFC suggests two new
+# command-like flags to solve the issue. Meanwhile, we use the non-custom case
+# and then retouch the generated files.
+rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \
+    rustdoc-kernel rustdoc-pin_init rustdoc-zerocopy rustdoc-zerocopy_derive
+	$(Q)grep -Ehro '<a href="srctree/([^"]+)"' $(rustdoc_output) | \
+		cut -d'"' -f2 | cut -d/ -f2- | while read f; do \
+			if [ ! -e "$(srctree)/$$f" ]; then \
+				echo "warning: srctree/ link to $$f does not exist"; \
+			fi \
+		done
+	$(Q)cp $(srctree)/Documentation/images/logo.svg $(rustdoc_output)/static.files/
+	$(Q)cp $(srctree)/Documentation/images/COPYING-logo $(rustdoc_output)/static.files/
+	$(Q)find $(rustdoc_output) -name '*.html' -type f -print0 | xargs -0 sed -Ei \
+		-e 's:rust-logo-[0-9a-f]+\.svg:logo.svg:g' \
+		-e 's:favicon-[0-9a-f]+\.svg:logo.svg:g' \
+		-e 's:<link rel="alternate icon" type="image/png" href="[/.]+/static\.files/favicon-(16x16|32x32)-[0-9a-f]+\.png">::g' \
+		-e 's:<a href="srctree/([^"]+)">:<a href="$(realpath $(srctree))/\1">:g'
+	$(Q)for f in $(rustdoc_output)/static.files/rustdoc-*.css; do \
+		echo ".logo-container > img { object-fit: contain; }" >> $$f; done
+
+rustdoc-proc_macro2: private rustdoc_host = yes
+rustdoc-proc_macro2: private rustc_target_flags = $(proc_macro2-flags)
+rustdoc-proc_macro2: $(src)/proc-macro2/lib.rs rustdoc-clean FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-quote: private rustdoc_host = yes
+rustdoc-quote: private rustc_target_flags = $(quote-flags)
+rustdoc-quote: private skip_flags = $(quote-skip_flags)
+rustdoc-quote: $(src)/quote/lib.rs rustdoc-clean rustdoc-proc_macro2 FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-syn: private rustdoc_host = yes
+rustdoc-syn: private rustc_target_flags = $(syn-flags)
+rustdoc-syn: $(src)/syn/lib.rs rustdoc-clean rustdoc-quote FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-zerocopy_derive: private rustdoc_host = yes
+rustdoc-zerocopy_derive: private rustc_target_flags = $(zerocopy_derive-flags) \
+    --extern proc_macro --crate-type proc-macro
+rustdoc-zerocopy_derive: $(src)/zerocopy-derive/lib.rs rustdoc-clean rustdoc-syn FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-macros: private rustdoc_host = yes
+rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \
+    --extern proc_macro --extern proc_macro2 --extern quote --extern syn
+rustdoc-macros: $(src)/macros/lib.rs rustdoc-clean rustdoc-proc_macro2 \
+    rustdoc-quote rustdoc-syn FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-core: private skip_flags = $(core-skip_flags)
+rustdoc-core: private rustc_target_flags = $(core-flags)
+rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs rustdoc-clean FORCE
+	+$(call if_changed,rustdoc)
+
+# Even if `rustdoc` targets are not kernel objects, they should still be
+# treated as such so that we pass the same flags. Otherwise, for instance,
+# `rustdoc` will complain about missing sanitizer flags causing an ABI mismatch.
+rustdoc-compiler_builtins: private is-kernel-object := y
+rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-zerocopy: private rustc_target_envs := $(zerocopy-envs)
+rustdoc-zerocopy: private is-kernel-object := y
+rustdoc-zerocopy: private rustc_target_flags = $(zerocopy-flags) \
+    --extend-css $(src)/zerocopy/rustdoc/style.css
+rustdoc-zerocopy: $(src)/zerocopy/src/lib.rs rustdoc-clean rustdoc-core FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-ffi: private is-kernel-object := y
+rustdoc-ffi: $(src)/ffi.rs rustdoc-core FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-pin_init_internal: private rustdoc_host = yes
+rustdoc-pin_init_internal: private rustc_target_flags = $(pin_init_internal-flags) \
+    --extern proc_macro --crate-type proc-macro
+rustdoc-pin_init_internal: $(src)/pin-init/internal/src/lib.rs \
+    rustdoc-clean rustdoc-proc_macro2 rustdoc-quote rustdoc-syn FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-pin_init: private rustdoc_host = yes
+rustdoc-pin_init: private rustc_target_flags = $(pin_init-flags) \
+    --extern pin_init_internal=$(objtree)/$(obj)/$(libpin_init_internal_name) \
+    --extern alloc --cfg feature=\"alloc\"
+rustdoc-pin_init: $(src)/pin-init/src/lib.rs rustdoc-pin_init_internal \
+    rustdoc-macros FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-kernel: private is-kernel-object := y
+rustdoc-kernel: private rustc_target_flags = --extern ffi --extern pin_init \
+    --extern build_error --extern macros \
+    --extern bindings --extern uapi \
+    --extern zerocopy --extern zerocopy_derive
+rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-ffi rustdoc-macros \
+    rustdoc-pin_init rustdoc-compiler_builtins $(obj)/$(libmacros_name) \
+    $(obj)/bindings.o FORCE
+	+$(call if_changed,rustdoc)
+
+rustdoc-clean: FORCE
+	$(Q)rm -rf $(rustdoc_output)
+
+quiet_cmd_rustc_test_library = $(RUSTC_OR_CLIPPY_QUIET) TL $<
+      cmd_rustc_test_library = \
+	$(rustc_target_envs) \
+	OBJTREE=$(abspath $(objtree)) \
+	$(RUSTC_OR_CLIPPY) $(filter-out $(skip_flags),$(rust_common_flags) $(rustc_target_flags)) \
+		@$(objtree)/include/generated/rustc_cfg \
+		--crate-type $(if $(rustc_test_library_proc),proc-macro,rlib) \
+		--out-dir $(objtree)/$(obj)/test --cfg testlib \
+		-L$(objtree)/$(obj)/test \
+		--crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $<
+
+rusttestlib-zerocopy: private rustc_target_envs := $(zerocopy-envs)
+rusttestlib-zerocopy: private rustc_target_flags = $(zerocopy-flags)
+rusttestlib-zerocopy: $(src)/zerocopy/src/lib.rs FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-build_error: $(src)/build_error.rs FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-ffi: $(src)/ffi.rs FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-proc_macro2: private rustc_target_flags = $(proc_macro2-flags)
+rusttestlib-proc_macro2: $(src)/proc-macro2/lib.rs FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-quote: private skip_flags = $(quote-skip_flags)
+rusttestlib-quote: private rustc_target_flags = $(quote-flags)
+rusttestlib-quote: $(src)/quote/lib.rs rusttestlib-proc_macro2 FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-syn: private rustc_target_flags = $(syn-flags)
+rusttestlib-syn: $(src)/syn/lib.rs rusttestlib-quote FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-zerocopy_derive: private rustc_target_flags = $(zerocopy_derive-flags) \
+    --extern proc_macro
+rusttestlib-zerocopy_derive: private rustc_test_library_proc = yes
+rusttestlib-zerocopy_derive: $(src)/zerocopy-derive/lib.rs rusttestlib-syn FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-macros: private rustc_target_flags = --extern proc_macro \
+    --extern proc_macro2 --extern quote --extern syn
+rusttestlib-macros: private rustc_test_library_proc = yes
+rusttestlib-macros: $(src)/macros/lib.rs \
+    rusttestlib-proc_macro2 rusttestlib-quote rusttestlib-syn FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-pin_init_internal: private rustc_target_flags = $(pin_init_internal-flags) \
+    --extern proc_macro
+rusttestlib-pin_init_internal: private rustc_test_library_proc = yes
+rusttestlib-pin_init_internal: $(src)/pin-init/internal/src/lib.rs \
+    rusttestlib-proc_macro2 rusttestlib-quote rusttestlib-syn FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-pin_init: private rustc_target_flags = $(pin_init-flags)
+rusttestlib-pin_init: $(src)/pin-init/src/lib.rs rusttestlib-macros \
+    rusttestlib-pin_init_internal $(obj)/$(libpin_init_internal_name) FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-kernel: private rustc_target_flags = --extern ffi \
+    --extern build_error --extern macros --extern pin_init \
+    --extern bindings --extern uapi \
+    --extern zerocopy=$(objtree)/$(obj)/test/libzerocopy.rlib --extern zerocopy_derive
+rusttestlib-kernel: $(src)/kernel/lib.rs rusttestlib-bindings rusttestlib-uapi \
+    rusttestlib-build_error rusttestlib-pin_init $(obj)/$(libmacros_name) \
+    $(obj)/bindings.o rusttestlib-zerocopy rusttestlib-zerocopy_derive FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-bindings: private rustc_target_flags = --extern ffi --extern pin_init
+rusttestlib-bindings: $(src)/bindings/lib.rs rusttestlib-ffi rusttestlib-pin_init FORCE
+	+$(call if_changed,rustc_test_library)
+
+rusttestlib-uapi: private rustc_target_flags = --extern ffi --extern pin_init
+rusttestlib-uapi: $(src)/uapi/lib.rs rusttestlib-ffi rusttestlib-pin_init FORCE
+	+$(call if_changed,rustc_test_library)
+
+quiet_cmd_rustdoc_test = RUSTDOC T $<
+      cmd_rustdoc_test = \
+	$(rustc_target_envs) \
+	RUST_MODFILE=test.rs \
+	OBJTREE=$(abspath $(objtree)) \
+	$(RUSTDOC) --test $(rust_common_flags) \
+		-Zcrate-attr='feature(used_with_arg)' \
+		@$(objtree)/include/generated/rustc_cfg \
+		$(rustc_target_flags) $(rustdoc_test_target_flags) \
+		$(rustdoc_test_quiet) \
+		-L$(objtree)/$(obj)/test --output $(rustdoc_output) \
+		--crate-name $(subst rusttest-,,$@) $<
+
+quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $<
+      cmd_rustdoc_test_kernel = \
+	rm -rf $(objtree)/$(obj)/test/doctests/kernel; \
+	mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \
+	$(rustc_target_envs) \
+	OBJTREE=$(abspath $(objtree)) \
+	$(RUSTDOC) --test $(filter-out --remap-path-scope=%,$(rust_flags)) \
+		-L$(objtree)/$(obj) --extern ffi --extern pin_init \
+		--extern kernel --extern build_error --extern macros \
+		--extern bindings --extern uapi \
+		--extern zerocopy --extern zerocopy_derive \
+		--no-run --crate-name kernel -Zunstable-options \
+		--sysroot=/dev/null \
+		$(doctests_modifiers_workaround) \
+		--test-builder $(objtree)/scripts/rustdoc_test_builder \
+		$< $(rustdoc_test_kernel_quiet); \
+	$(objtree)/scripts/rustdoc_test_gen
+
+%/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \
+    $(src)/kernel/lib.rs $(obj)/kernel.o \
+    $(objtree)/scripts/rustdoc_test_builder \
+    $(objtree)/scripts/rustdoc_test_gen FORCE
+	+$(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`.
+quiet_cmd_rustc_test = $(RUSTC_OR_CLIPPY_QUIET) T  $<
+      cmd_rustc_test = \
+	$(rustc_target_envs) \
+	OBJTREE=$(abspath $(objtree)) \
+	$(RUSTC_OR_CLIPPY) --test $(rust_common_flags) \
+		@$(objtree)/include/generated/rustc_cfg \
+		$(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \
+		-L$(objtree)/$(obj)/test \
+		--crate-name $(subst rusttest-,,$@) $<; \
+	$(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \
+		$(rustc_test_run_flags)
+
+rusttest: rusttest-macros
+
+rusttest-macros: private rustc_target_flags = --extern proc_macro \
+    --extern macros --extern kernel --extern pin_init \
+    --extern proc_macro2 --extern quote --extern syn
+rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro
+rusttest-macros: $(src)/macros/lib.rs \
+    rusttestlib-macros rusttestlib-kernel rusttestlib-pin_init FORCE
+	+$(call if_changed,rustc_test)
+	+$(call if_changed,rustdoc_test)
+
+ifdef CONFIG_CC_IS_CLANG
+bindgen_c_flags = $(c_flags)
+else
+# bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC
+# plugin backend and/or the Clang driver would be perfectly compatible with GCC.
+#
+# For the moment, here we are tweaking the flags on the fly. This is a hack,
+# and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT`
+# if we end up using one of those structs).
+bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \
+	-mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \
+	-mindirect-branch=thunk-extern -mindirect-branch-register \
+	-mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \
+	-mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \
+	-mno-pointers-to-nested-functions -mno-string \
+	-mno-strict-align -mstrict-align -mdirect-extern-access \
+	-mexplicit-relocs -mno-check-zero-division \
+	-fconserve-stack -falign-jumps=% -falign-loops=% \
+	-femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \
+	-fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \
+	-fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \
+	-fzero-call-used-regs=% -fno-stack-clash-protection \
+	-fno-inline-functions-called-once -fsanitize=bounds-strict \
+	-fstrict-flex-arrays=% -fmin-function-alignment=% \
+	-fzero-init-padding-bits=% -mno-fdpic \
+	-fdiagnostics-show-context -fdiagnostics-show-context=% \
+	--param=% --param asan-% -fno-isolate-erroneous-paths-dereference \
+	-ffixed-r2 -mmultiple -mno-readonly-in-sdata
+
+# Derived from `scripts/Makefile.clang`.
+BINDGEN_TARGET_x86	:= x86_64-linux-gnu
+BINDGEN_TARGET_arm64	:= aarch64-linux-gnu
+BINDGEN_TARGET_arm	:= arm-linux-gnueabi
+BINDGEN_TARGET_loongarch	:= loongarch64-linux-gnusf
+BINDGEN_TARGET_s390	:= s390x-linux-gnu
+# This is only for i386 UM builds, which need the 32-bit target not -m32
+BINDGEN_TARGET_i386	:= i386-linux-gnu
+
+ifdef CONFIG_PPC64
+BINDGEN_TARGET_powerpc	:= powerpc64le-linux-gnu
+else
+BINDGEN_TARGET_powerpc	:= powerpc-linux-gnu
+endif
+
+BINDGEN_TARGET_um	:= $(BINDGEN_TARGET_$(SUBARCH))
+BINDGEN_TARGET		:= $(BINDGEN_TARGET_$(SRCARCH))
+
+# All warnings are inhibited since GCC builds are very experimental,
+# many GCC warnings are not supported by Clang, they may only appear in
+# some configurations, with new GCC versions, etc.
+bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET)
+
+# Auto variable zero-initialization requires an additional special option with
+# clang that is going to be removed sometime in the future (likely in
+# clang-18), so make sure to pass this option only if clang supports it
+# (libclang major version < 16).
+#
+# https://github.com/llvm/llvm-project/issues/44842
+# https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags
+ifdef CONFIG_INIT_STACK_ALL_ZERO
+libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p')
+ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1)
+bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+endif
+endif
+
+bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \
+	$(bindgen_extra_c_flags)
+endif
+
+ifdef CONFIG_LTO
+bindgen_c_flags_lto = $(filter-out $(CC_FLAGS_LTO), $(bindgen_c_flags))
+else
+bindgen_c_flags_lto = $(bindgen_c_flags)
+endif
+
+# `-fno-builtin` is passed to avoid `bindgen` from using `clang` builtin
+# prototypes for functions like `memcpy` -- if this flag is not passed,
+# `bindgen`-generated prototypes use `c_ulong` or `c_uint` depending on
+# architecture instead of generating `usize`.
+bindgen_c_flags_final = $(bindgen_c_flags_lto) -fno-builtin -D__BINDGEN__
+
+# `--rust-target` points to our minimum supported Rust version.
+quiet_cmd_bindgen = BINDGEN $@
+      cmd_bindgen = \
+	$(BINDGEN) $< $(bindgen_target_flags) --rust-target 1.85 \
+		--use-core --with-derive-default --ctypes-prefix ffi --no-layout-tests \
+		--no-debug '.*' --enable-function-attribute-detection \
+		-o $@ -- $(bindgen_c_flags_final) -DMODULE \
+		$(bindgen_target_cflags) $(bindgen_target_extra)
+
+$(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \
+    $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters)
+$(obj)/bindings/bindings_generated.rs: private bindgen_target_extra = ; \
+    sed -Ei 's/pub const RUST_CONST_HELPER_([a-zA-Z0-9_]*)/pub const \1/g' $@
+$(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \
+    $(src)/bindgen_parameters FORCE
+	$(call if_changed_dep,bindgen)
+
+$(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \
+    $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters)
+$(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \
+    $(src)/bindgen_parameters FORCE
+	$(call if_changed_dep,bindgen)
+
+# See `CFLAGS_REMOVE_helpers.o` above. In addition, Clang on C does not warn
+# with `-Wmissing-declarations` (unlike GCC), so it is not strictly needed here
+# given it is `libclang`; but for consistency, future Clang changes and/or
+# a potential future GCC backend for `bindgen`, we disable it too.
+$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_flags = \
+    --blocklist-type '.*' --allowlist-var '' \
+    --allowlist-function 'rust_helper_.*'
+$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_cflags = \
+    -I$(objtree)/$(obj) -Wno-missing-prototypes -Wno-missing-declarations
+$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ; \
+    sed -Ei 's/pub fn rust_helper_([a-zA-Z0-9_]*)/#[link_name="rust_helper_\1"]\n    pub fn \1/g' $@
+$(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers/helpers.c FORCE
+	$(call if_changed_dep,bindgen)
+
+quiet_cmd_rust_helper = HELPER  $@
+      cmd_rust_helper = \
+	$(CC) $(filter-out $(CFLAGS_REMOVE_helpers/helpers.o), $(c_flags)) \
+		-c -g0 $< -emit-llvm -o $@
+
+$(obj)/helpers/helpers.bc: private part-of-builtin := y
+$(obj)/helpers/helpers_module.bc: private part-of-module := y
+$(obj)/helpers/helpers.bc $(obj)/helpers/helpers_module.bc: $(src)/helpers/helpers.c FORCE
+	+$(call if_changed_dep,rust_helper)
+
+rust_exports = $(NM) -p --defined-only $(1) | awk '$$2~/(T|R|D|B)/ && $$3!~/__(pfx|cfi|odr_asan)/ { printf $(2),$$3 }'
+
+quiet_cmd_exports = EXPORTS $@
+      cmd_exports = \
+	$(call rust_exports,$<,"EXPORT_SYMBOL_RUST_GPL(%s);\n") > $@
+
+$(obj)/exports_core_generated.h: $(obj)/core.o FORCE
+	$(call if_changed,exports)
+
+# Even though Rust kernel modules should never use the bindings directly,
+# symbols from the `bindings` crate and the C helpers need to be exported
+# because Rust generics and inlined functions may not get their code generated
+# in the crate where they are defined. Other helpers, called from non-inline
+# functions, may not be exported, in principle. However, in general, the Rust
+# compiler does not guarantee codegen will be performed for a non-inline
+# function either. Therefore, we export all symbols from helpers and bindings.
+# In the future, this may be revisited to reduce the number of exports after
+# the compiler is informed about the places codegen is required.
+$(obj)/exports_helpers_generated.h: $(obj)/helpers/helpers.o FORCE
+	$(call if_changed,exports)
+
+$(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE
+	$(call if_changed,exports)
+
+$(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE
+	$(call if_changed,exports)
+
+quiet_cmd_rustc_procmacrolibrary = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) PL $@
+      cmd_rustc_procmacrolibrary = \
+	$(rustc_target_envs) \
+	$(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \
+		$(filter-out $(skip_flags),$(rust_common_flags) $(rustc_target_flags)) \
+		--emit=dep-info=$(depfile) --emit=link=$@ --crate-type rlib -O \
+		--out-dir $(objtree)/$(obj)/host -L$(objtree)/$(obj)/host \
+		--crate-name $(patsubst lib%.rlib,%,$(notdir $@)) $<
+
+$(obj)/host/libproc_macro2.rlib: private skip_clippy = 1
+$(obj)/host/libproc_macro2.rlib: private rustc_target_flags = $(proc_macro2-flags)
+$(obj)/host/libproc_macro2.rlib: $(src)/proc-macro2/lib.rs FORCE
+	+$(call if_changed_dep,rustc_procmacrolibrary)
+
+$(obj)/host/libquote.rlib: private skip_clippy = 1
+$(obj)/host/libquote.rlib: private skip_flags = $(quote-skip_flags)
+$(obj)/host/libquote.rlib: private rustc_target_flags = $(quote-flags)
+$(obj)/host/libquote.rlib: $(src)/quote/lib.rs $(obj)/host/libproc_macro2.rlib FORCE
+	+$(call if_changed_dep,rustc_procmacrolibrary)
+
+$(obj)/host/libsyn.rlib: private skip_clippy = 1
+$(obj)/host/libsyn.rlib: private rustc_target_flags = $(syn-flags)
+$(obj)/host/libsyn.rlib: $(src)/syn/lib.rs $(obj)/host/libquote.rlib FORCE
+	+$(call if_changed_dep,rustc_procmacrolibrary)
+
+quiet_cmd_rustc_procmacro = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) P $@
+      cmd_rustc_procmacro = \
+	$(rustc_target_envs) \
+	$(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) $(rust_common_flags) $(rustc_target_flags) \
+		-Clinker-flavor=gcc -Clinker=$(HOSTCC) \
+		-Clink-args='$(call escsq,$(KBUILD_PROCMACROLDFLAGS))' \
+		--emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \
+		--crate-type proc-macro -L$(objtree)/$(obj)/host \
+		--crate-name $(patsubst lib%.$(procmacro-extension),%,$(notdir $@)) \
+		@$(objtree)/include/generated/rustc_cfg $<
+
+# Procedural macros can only be used with the `rustc` that compiled it.
+$(obj)/$(libzerocopy_derive_name): private skip_clippy = 1
+$(obj)/$(libzerocopy_derive_name): private rustc_target_flags = $(zerocopy_derive-flags)
+$(obj)/$(libzerocopy_derive_name): $(src)/zerocopy-derive/lib.rs $(obj)/host/libproc_macro2.rlib \
+    $(obj)/host/libquote.rlib $(obj)/host/libsyn.rlib FORCE
+	+$(call if_changed_dep,rustc_procmacro)
+
+$(obj)/$(libmacros_name): private rustc_target_flags = \
+    --extern proc_macro2 --extern quote --extern syn
+$(obj)/$(libmacros_name): $(src)/macros/lib.rs $(obj)/host/libproc_macro2.rlib \
+    $(obj)/host/libquote.rlib $(obj)/host/libsyn.rlib FORCE
+	+$(call if_changed_dep,rustc_procmacro)
+
+$(obj)/$(libpin_init_internal_name): private rustc_target_flags = $(pin_init_internal-flags)
+$(obj)/$(libpin_init_internal_name): $(src)/pin-init/internal/src/lib.rs \
+    $(obj)/host/libproc_macro2.rlib $(obj)/host/libquote.rlib $(obj)/host/libsyn.rlib FORCE
+	+$(call if_changed_dep,rustc_procmacro)
+
+# `rustc` requires `-Zunstable-options` to use custom target specifications
+# since Rust 1.95.0 (https://github.com/rust-lang/rust/pull/151534).
+quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@
+      cmd_rustc_library = \
+	$(rustc_target_envs) \
+	OBJTREE=$(abspath $(objtree)) \
+	$(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \
+		$(filter-out $(skip_flags),$(rust_flags)) $(rustc_target_flags) \
+		--emit=dep-info=$(depfile) --emit=$(if $(link_helper),llvm-bc=$(patsubst %.o,%.bc,$@),obj=$@) \
+		--emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \
+		--crate-type rlib -L$(objtree)/$(obj) \
+		--crate-name $(patsubst %.o,%,$(notdir $@)) $< \
+		--sysroot=/dev/null \
+		-Zunstable-options \
+	$(if $(link_helper),;$(LLVM_LINK) --internalize --suppress-warnings $(patsubst %.o,%.bc,$@) \
+		$(obj)/helpers/helpers$(if $(part-of-module),_module).bc -o $(patsubst %.o,%.m.bc,$@); \
+		$(CC) $(CLANG_FLAGS) $(KBUILD_CFLAGS) -Wno-override-module -c $(patsubst %.o,%.m.bc,$@) -o $@ \
+		$(cmd_ld_single)) \
+	$(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@) \
+	$(cmd_objtool)
+
+rust-analyzer:
+	$(Q)MAKEFLAGS= $(srctree)/scripts/generate_rust_analyzer.py \
+		--cfgs='core=$(core-cfgs)' $(core-edition) \
+		--cfgs='zerocopy=$(zerocopy-cfgs)' \
+		--cfgs='proc_macro2=$(proc_macro2-cfgs)' \
+		--cfgs='quote=$(quote-cfgs)' \
+		--cfgs='syn=$(syn-cfgs)' \
+		--cfgs='zerocopy_derive=$(zerocopy_derive-cfgs)' \
+		--cfgs='pin_init_internal=$(pin_init_internal-cfgs)' \
+		--cfgs='pin_init=$(pin_init-cfgs)' \
+		--envs='zerocopy=$(zerocopy-envs)' \
+		$(realpath $(srctree)) $(realpath $(objtree)) \
+		$(rustc_sysroot) $(RUST_LIB_SRC) $(if $(KBUILD_EXTMOD),$(srcroot)) \
+		> rust-project.json
+
+redirect-intrinsics = \
+	__addsf3 __eqsf2 __extendsfdf2 __gesf2 __lesf2 __ltsf2 __mulsf3 __nesf2 __truncdfsf2 __unordsf2 \
+	__adddf3 __eqdf2 __ledf2 __ltdf2 __muldf3 __unorddf2 \
+	__muloti4 __multi3 \
+	__udivmodti4 __udivti3 __umodti3
+
+ifdef CONFIG_ARM
+	# Add eabi initrinsics for ARM 32-bit
+	redirect-intrinsics += \
+		__aeabi_fadd __aeabi_fmul __aeabi_fcmpeq __aeabi_fcmple __aeabi_fcmplt __aeabi_fcmpun \
+		__aeabi_dadd __aeabi_dmul __aeabi_dcmple __aeabi_dcmplt __aeabi_dcmpun \
+		__aeabi_uldivmod
+endif
+ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),)
+	# These intrinsics are defined for ARM64 and RISCV64
+	redirect-intrinsics += \
+		__ashrti3 \
+		__ashlti3 __lshrti3
+endif
+ifdef CONFIG_PPC32
+	redirect-intrinsics += \
+		__udivdi3 __umoddi3
+endif
+
+ifdef CONFIG_MODVERSIONS
+cmd_gendwarfksyms = $(if $(skip_gendwarfksyms),, \
+	$(call rust_exports,$@,"%s\n") | \
+	scripts/gendwarfksyms/gendwarfksyms \
+		$(if $(KBUILD_GENDWARFKSYMS_STABLE), --stable) \
+		$(if $(KBUILD_SYMTYPES), --symtypes $(@:.o=.symtypes),) \
+		$@ >> $(dot-target).cmd)
+endif
+
+define rule_rustc_library
+	$(call cmd_and_fixdep,rustc_library)
+	$(call cmd,gen_objtooldep)
+	$(call cmd,gendwarfksyms)
+endef
+
+define rule_rust_cc_library
+	$(call if_changed_rule,cc_o_c)
+	$(call cmd,force_checksrc)
+	$(call cmd,gendwarfksyms)
+endef
+
+# helpers.o uses the same export mechanism as Rust libraries, so ensure symbol
+# versions are calculated for the helpers too.
+$(obj)/helpers/helpers.o: $(src)/helpers/helpers.c $(recordmcount_source) FORCE
+	+$(call if_changed_rule,rust_cc_library)
+
+# Disable symbol versioning for exports.o to avoid conflicts with the actual
+# symbol versions generated from Rust objects.
+$(obj)/exports.o: private skip_gendwarfksyms = 1
+
+$(obj)/core.o: private skip_clippy = 1
+$(obj)/core.o: private skip_flags = $(core-skip_flags)
+$(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym))
+$(obj)/core.o: private rustc_target_flags = $(core-flags)
+$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs \
+    $(wildcard $(objtree)/include/config/RUSTC_VERSION_TEXT) FORCE
+	+$(call if_changed_rule,rustc_library)
+ifneq ($(or $(CONFIG_X86_64),$(CONFIG_X86_32)),)
+$(obj)/core.o: scripts/target.json
+endif
+KCOV_INSTRUMENT_core.o := n
+
+$(obj)/compiler_builtins.o: private skip_gendwarfksyms = 1
+$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*'
+$(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE
+	+$(call if_changed_rule,rustc_library)
+
+$(obj)/zerocopy.o: private skip_clippy = 1
+$(obj)/zerocopy.o: private skip_gendwarfksyms = 1
+$(obj)/zerocopy.o: private rustc_target_envs := $(zerocopy-envs)
+$(obj)/zerocopy.o: private rustc_target_flags = $(zerocopy-flags)
+$(obj)/zerocopy.o: $(src)/zerocopy/src/lib.rs $(obj)/compiler_builtins.o FORCE
+	+$(call if_changed_rule,rustc_library)
+
+$(obj)/pin_init.o: private skip_gendwarfksyms = 1
+$(obj)/pin_init.o: private rustc_target_flags = $(pin_init-flags)
+$(obj)/pin_init.o: $(src)/pin-init/src/lib.rs $(obj)/compiler_builtins.o \
+    $(obj)/$(libpin_init_internal_name) $(obj)/$(libmacros_name) FORCE
+	+$(call if_changed_rule,rustc_library)
+
+# Even if normally `build_error` is not a kernel object, it should still be
+# treated as such so that we pass the same flags. Otherwise, for instance,
+# `rustc` will complain about missing sanitizer flags causing an ABI mismatch.
+$(obj)/build_error.o: private is-kernel-object := y
+$(obj)/build_error.o: private skip_gendwarfksyms = 1
+$(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE
+	+$(call if_changed_rule,rustc_library)
+
+$(obj)/ffi.o: private skip_gendwarfksyms = 1
+$(obj)/ffi.o: $(src)/ffi.rs $(obj)/compiler_builtins.o FORCE
+	+$(call if_changed_rule,rustc_library)
+
+$(obj)/bindings.o: private rustc_target_flags = --extern ffi --extern pin_init
+$(obj)/bindings.o: $(src)/bindings/lib.rs \
+    $(obj)/ffi.o \
+    $(obj)/pin_init.o \
+    $(obj)/bindings/bindings_generated.rs \
+    $(obj)/bindings/bindings_helpers_generated.rs FORCE
+	+$(call if_changed_rule,rustc_library)
+
+$(obj)/uapi.o: private rustc_target_flags = --extern ffi --extern pin_init
+$(obj)/uapi.o: private skip_gendwarfksyms = 1
+$(obj)/uapi.o: $(src)/uapi/lib.rs \
+    $(obj)/ffi.o \
+    $(obj)/pin_init.o \
+    $(obj)/uapi/uapi_generated.rs FORCE
+	+$(call if_changed_rule,rustc_library)
+
+$(obj)/kernel.o: private rustc_target_flags = --extern ffi --extern pin_init \
+    --extern build_error --extern macros --extern bindings --extern uapi \
+    --extern zerocopy --extern zerocopy_derive
+$(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/build_error.o $(obj)/pin_init.o \
+    $(obj)/$(libmacros_name) $(obj)/bindings.o $(obj)/uapi.o \
+    $(obj)/zerocopy.o $(obj)/$(libzerocopy_derive_name) FORCE
+	+$(call if_changed_rule,rustc_library)
+
+ifdef CONFIG_JUMP_LABEL
+$(obj)/kernel.o: $(obj)/kernel/generated_arch_static_branch_asm.rs
+endif
+ifndef CONFIG_UML
+ifdef CONFIG_BUG
+$(obj)/kernel.o: $(obj)/kernel/generated_arch_warn_asm.rs $(obj)/kernel/generated_arch_reachable_asm.rs
+endif
+endif
+
+ifdef CONFIG_RUST_INLINE_HELPERS
+$(obj)/kernel.o: private link_helper = 1
+$(obj)/kernel.o: $(obj)/helpers/helpers.bc
+endif
+
+endif # CONFIG_RUST