help me, what is this witchcraft

Makefile

@@ -5,16 +5,13 @@ SUBLEVEL = 30
 EXTRAVERSION =
 NAME = Hurr durr I'ma ninja sloth
 
+
 # *DOCUMENTATION*
 # To see a list of typical targets execute "make help"
 # More info can be located in ./README
 # Comments in this file are targeted only to the developer, do not
 # expect to learn how to build the kernel reading this file.
 
-ifeq ($(filter undefine,$(.FEATURES)),)
-$(error GNU Make >= 3.82 is required. Your Make version is $(MAKE_VERSION))
-endif
-
 $(if $(filter __%, $(MAKECMDGOALS)), \
 	$(error targets prefixed with '__' are only for internal use))
 
@@ -38,10 +35,6 @@ __all:
 # descending is started. They are now explicitly listed as the
 # prepare rule.
 
-this-makefile := $(lastword $(MAKEFILE_LIST))
-export abs_srctree := $(realpath $(dir $(this-makefile)))
-export abs_objtree := $(CURDIR)
-
 ifneq ($(sub_make_done),1)
 
 # Do not use make's built-in rules and variables
@@ -60,21 +53,26 @@ unexport GREP_OPTIONS
 # Beautify output
 # ---------------------------------------------------------------------------
 #
-# Most of build commands in Kbuild start with "cmd_". You can optionally define
+# Normally, we echo the whole command before executing it. By making
-# "quiet_cmd_*". If defined, the short log is printed. Otherwise, no log from
+# that echo $($(quiet)$(cmd)), we now have the possibility to set
-# that command is printed by default.
+# $(quiet) to choose other forms of output instead, e.g.
 #
-# e.g.)
+#         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
-#    quiet_cmd_depmod = DEPMOD  $(MODLIB)
+#         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
-#          cmd_depmod = $(srctree)/scripts/depmod.sh $(DEPMOD) $(KERNELRELEASE)
+#
+# If $(quiet) is empty, the whole command will be printed.
+# If it is set to "quiet_", only the short version will be printed.
+# If it is set to "silent_", nothing will be printed at all, since
+# the variable $(silent_cmd_cc_o_c) doesn't exist.
 #
 # A simple variant is to prefix commands with $(Q) - that's useful
 # for commands that shall be hidden in non-verbose mode.
 #
-#    $(Q)$(MAKE) $(build)=scripts/basic
+#	$(Q)ln $@ :<
 #
-# If KBUILD_VERBOSE contains 1, the whole command is echoed.
+# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
-# If KBUILD_VERBOSE contains 2, the reason for rebuilding is printed.
+# If KBUILD_VERBOSE equals 1 then the above command is displayed.
+# If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt.
 #
 # To put more focus on warnings, be less verbose as default
 # Use 'make V=1' to see the full commands
@@ -82,13 +80,16 @@ unexport GREP_OPTIONS
 ifeq ("$(origin V)", "command line")
   KBUILD_VERBOSE = $(V)
 endif
+ifndef KBUILD_VERBOSE
+  KBUILD_VERBOSE = 0
+endif
 
-quiet = quiet_
+ifeq ($(KBUILD_VERBOSE),1)
-Q = @
-
-ifneq ($(findstring 1, $(KBUILD_VERBOSE)),)
   quiet =
   Q =
+else
+  quiet=quiet_
+  Q = @
 endif
 
 # If the user is running make -s (silent mode), suppress echoing of
@@ -96,14 +97,14 @@ endif
 # make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS.
 
 ifeq ($(filter 3.%,$(MAKE_VERSION)),)
-short-opts := $(firstword -$(MAKEFLAGS))
+silence:=$(findstring s,$(firstword -$(MAKEFLAGS)))
 else
-short-opts := $(filter-out --%,$(MAKEFLAGS))
+silence:=$(findstring s,$(filter-out --%,$(MAKEFLAGS)))
 endif
 
-ifneq ($(findstring s,$(short-opts)),)
+ifeq ($(silence),s)
 quiet=silent_
-override KBUILD_VERBOSE :=
+KBUILD_VERBOSE = 0
 endif
 
 export quiet Q KBUILD_VERBOSE
@@ -207,12 +208,32 @@ $(if $(abs_objtree),, \
 
 # $(realpath ...) resolves symlinks
 abs_objtree := $(realpath $(abs_objtree))
+else
+abs_objtree := $(CURDIR)
 endif # ifneq ($(KBUILD_OUTPUT),)
 
+ifeq ($(abs_objtree),$(CURDIR))
+# Suppress "Entering directory ..." unless we are changing the work directory.
+MAKEFLAGS += --no-print-directory
+else
+need-sub-make := 1
+endif
+
+this-makefile := $(lastword $(MAKEFILE_LIST))
+abs_srctree := $(realpath $(dir $(this-makefile)))
+
 ifneq ($(words $(subst :, ,$(abs_srctree))), 1)
 $(error source directory cannot contain spaces or colons)
 endif
 
+ifneq ($(abs_srctree),$(abs_objtree))
+# Look for make include files relative to root of kernel src
+#
+# --included-dir is added for backward compatibility, but you should not rely on
+# it. Please add $(srctree)/ prefix to include Makefiles in the source tree.
+MAKEFLAGS += --include-dir=$(abs_srctree)
+endif
+
 ifneq ($(filter 3.%,$(MAKE_VERSION)),)
 # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x
 # We need to invoke sub-make to avoid implicit rules in the top Makefile.
@@ -221,25 +242,9 @@ need-sub-make := 1
 $(this-makefile): ;
 endif
 
+export abs_srctree abs_objtree
 export sub_make_done := 1
 
-endif # sub_make_done
-
-ifeq ($(abs_objtree),$(CURDIR))
-# Suppress "Entering directory ..." if we are at the final work directory.
-no-print-directory := --no-print-directory
-else
-# Recursion to show "Entering directory ..."
-need-sub-make := 1
-endif
-
-ifeq ($(filter --no-print-directory, $(MAKEFLAGS)),)
-# If --no-print-directory is unset, recurse once again to set it.
-# You may end up recursing into __sub-make twice. This is needed due to the
-# behavior change in GNU Make 4.4.1.
-need-sub-make := 1
-endif
-
 ifeq ($(need-sub-make),1)
 
 PHONY += $(MAKECMDGOALS) __sub-make
@@ -249,12 +254,18 @@ $(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make
 
 # Invoke a second make in the output directory, passing relevant variables
 __sub-make:
-	$(Q)$(MAKE) $(no-print-directory) -C $(abs_objtree) \
+	$(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS)
-	-f $(abs_srctree)/Makefile $(MAKECMDGOALS)
 
-else # need-sub-make
+endif # need-sub-make
+endif # sub_make_done
 
 # We process the rest of the Makefile if this is the final invocation of make
+ifeq ($(need-sub-make),)
+
+# Do not print "Entering directory ...",
+# but we want to display it when entering to the output directory
+# so that IDEs/editors are able to understand relative filenames.
+MAKEFLAGS += --no-print-directory
 
 ifeq ($(abs_srctree),$(abs_objtree))
         # building in the source tree
@@ -298,10 +309,10 @@ no-dot-config-targets := $(clean-targets) \
 # Installation targets should not require compiler. Unfortunately, vdso_install
 # is an exception where build artifacts may be updated. This must be fixed.
 no-compiler-targets := $(no-dot-config-targets) install dtbs_install \
-			headers_install modules_install modules_sign kernelrelease image_name
+			headers_install modules_install kernelrelease image_name
-no-sync-config-targets := $(no-dot-config-targets) %install modules_sign kernelrelease \
+no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \
 			  image_name
-single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.rsi %.s %.symtypes %/
+single-targets := %.a %.i %.rsi %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/
 
 config-build	:=
 mixed-build	:=
@@ -384,7 +395,7 @@ else # !mixed-build
 include $(srctree)/scripts/Kbuild.include
 
 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
-KERNELRELEASE = $(call read-file, include/config/kernel.release)
+KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
 
@@ -467,7 +478,8 @@ HOSTRUSTC = rustc
 HOSTPKG_CONFIG	= pkg-config
 
 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
-			 -O2 -fomit-frame-pointer -std=gnu11
+			 -O2 -fomit-frame-pointer -std=gnu11 \
+			 -Wdeclaration-after-statement
 KBUILD_USERCFLAGS  := $(KBUILD_USERHOSTCFLAGS) $(USERCFLAGS)
 KBUILD_USERLDFLAGS := $(USERLDFLAGS)
 
@@ -485,7 +497,6 @@ export rust_common_flags := --edition=2021 \
 			    -Dclippy::let_unit_value -Dclippy::mut_mut \
 			    -Dclippy::needless_bitwise_bool \
 			    -Dclippy::needless_continue \
-			    -Dclippy::no_mangle_with_rust_abi \
 			    -Wclippy::dbg_macro
 
 KBUILD_HOSTCFLAGS   := $(KBUILD_USERHOSTCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS)
@@ -528,6 +539,7 @@ LEX		= flex
 YACC		= bison
 AWK		= awk
 INSTALLKERNEL  := installkernel
+DEPMOD		= depmod
 PERL		= perl
 PYTHON3		= python3
 CHECK		= sparse
@@ -573,17 +585,14 @@ LINUXINCLUDE    := \
 		$(USERINCLUDE)
 
 KBUILD_AFLAGS   := -D__ASSEMBLY__ -fno-PIE
-
+KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
-KBUILD_CFLAGS :=
+		   -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
-KBUILD_CFLAGS += -std=gnu11
+		   -Werror=implicit-function-declaration -Werror=implicit-int \
-KBUILD_CFLAGS += -fshort-wchar
+		   -Werror=return-type -Wno-format-security \
-KBUILD_CFLAGS += -funsigned-char
+		   -std=gnu11
-KBUILD_CFLAGS += -fno-common
-KBUILD_CFLAGS += -fno-PIE
-KBUILD_CFLAGS += -fno-strict-aliasing
-
 KBUILD_CPPFLAGS := -D__KERNEL__
 KBUILD_RUSTFLAGS := $(rust_common_flags) \
+		    --target=$(objtree)/rust/target.json \
 		    -Cpanic=abort -Cembed-bitcode=n -Clto=n \
 		    -Cforce-unwind-tables=n -Ccodegen-units=1 \
 		    -Csymbol-mangling-version=v0 \
@@ -834,6 +843,10 @@ endif # may-sync-config
 endif # need-config
 
 KBUILD_CFLAGS	+= -fno-delete-null-pointer-checks
+KBUILD_CFLAGS	+= $(call cc-disable-warning,frame-address,)
+KBUILD_CFLAGS	+= $(call cc-disable-warning, format-truncation)
+KBUILD_CFLAGS	+= $(call cc-disable-warning, format-overflow)
+KBUILD_CFLAGS	+= $(call cc-disable-warning, address-of-packed-member)
 
 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
 KBUILD_CFLAGS += -O2
@@ -864,15 +877,40 @@ ifdef CONFIG_READABLE_ASM
 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa-cp-clone -fno-partial-inlining
 endif
 
+ifneq ($(CONFIG_FRAME_WARN),0)
+KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN)
+endif
+
 stackp-flags-y                                    := -fno-stack-protector
 stackp-flags-$(CONFIG_STACKPROTECTOR)             := -fstack-protector
 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG)      := -fstack-protector-strong
 
 KBUILD_CFLAGS += $(stackp-flags-y)
 
+KBUILD_CFLAGS-$(CONFIG_WERROR) += -Werror
+KBUILD_CFLAGS-$(CONFIG_CC_NO_ARRAY_BOUNDS) += -Wno-array-bounds
+
 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarnings
 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y)
 
+ifdef CONFIG_CC_IS_CLANG
+KBUILD_CPPFLAGS += -Qunused-arguments
+# The kernel builds with '-std=gnu11' so use of GNU extensions is acceptable.
+KBUILD_CFLAGS += -Wno-gnu
+else
+
+# gcc inanely warns about local variables called 'main'
+KBUILD_CFLAGS += -Wno-main
+endif
+
+# 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)
+
+# These result in bogus false positives
+KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer)
+
 ifdef CONFIG_FRAME_POINTER
 KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y
@@ -899,9 +937,7 @@ ifdef CONFIG_INIT_STACK_ALL_ZERO
 KBUILD_CFLAGS	+= -ftrivial-auto-var-init=zero
 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER
 # https://github.com/llvm/llvm-project/issues/44842
-CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+KBUILD_CFLAGS	+= -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
-export CC_AUTO_VAR_INIT_ZERO_ENABLER
-KBUILD_CFLAGS	+= $(CC_AUTO_VAR_INIT_ZERO_ENABLER)
 endif
 endif
 
@@ -925,9 +961,7 @@ ifdef CONFIG_FTRACE_MCOUNT_USE_CC
   endif
 endif
 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL
-  ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT
   CC_FLAGS_USING	+= -DCC_USING_NOP_MCOUNT
-  endif
 endif
 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
   ifdef CONFIG_HAVE_C_RECORDMCOUNT
@@ -963,7 +997,6 @@ ifdef CONFIG_SHADOW_CALL_STACK
 ifndef CONFIG_DYNAMIC_SCS
 CC_FLAGS_SCS	:= -fsanitize=shadow-call-stack
 KBUILD_CFLAGS	+= $(CC_FLAGS_SCS)
-KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-stack
 endif
 export CC_FLAGS_SCS
 endif
@@ -989,7 +1022,7 @@ KBUILD_LDFLAGS += -mllvm -import-instr-limit=5
 # Check for frame size exceeding threshold during prolog/epilog insertion
 # when using lld < 13.0.0.
 ifneq ($(CONFIG_FRAME_WARN),0)
-ifeq ($(call test-lt, $(CONFIG_LLD_VERSION), 130000),y)
+ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 130000; echo $$?),0)
 KBUILD_LDFLAGS	+= -plugin-opt=-warn-stack-size=$(CONFIG_FRAME_WARN)
 endif
 endif
@@ -1003,34 +1036,58 @@ endif
 
 ifdef CONFIG_CFI_CLANG
 CC_FLAGS_CFI	:= -fsanitize=kcfi
-ifdef CONFIG_RUST
-# If Rust is enabled, this flag is required to support cross-language
-# integer types.
-# This addresses the problem that on e.g. i686, int != long, and Rust
-# maps both to i32.
-# See https://rcvalle.com/docs/rust-cfi-design-doc.pdf for details.
-$(error "Enabling Rust and CFI silently changes the KMI.")
-CC_FLAGS_CFI   += -fsanitize-cfi-icall-experimental-normalize-integers
-RS_FLAGS_CFI   := -Zsanitizer=kcfi -Zsanitizer-cfi-normalize-integers
-KBUILD_RUSTFLAGS += $(RS_FLAGS_CFI)
-export RS_FLAGS_CFI
-endif
 KBUILD_CFLAGS	+= $(CC_FLAGS_CFI)
 export CC_FLAGS_CFI
 endif
 
-ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0)
+ifdef CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_64B
-KBUILD_CFLAGS += -falign-functions=$(CONFIG_FUNCTION_ALIGNMENT)
+KBUILD_CFLAGS += -falign-functions=64
 endif
 
 # arch Makefile may override CC so keep this after arch Makefile is included
 NOSTDINC_FLAGS += -nostdinc
 
-# To gain proper coverage for CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE,
+# warn about C99 declaration after statement
-# the kernel uses only C99 flexible arrays for dynamically sized trailing
+KBUILD_CFLAGS += -Wdeclaration-after-statement
-# arrays. Enforce this for everything that may examine structure sizes and
+
-# perform bounds checking.
+# Variable Length Arrays (VLAs) should not be used anywhere in the kernel
-KBUILD_CFLAGS += $(call cc-option, -fstrict-flex-arrays=3)
+KBUILD_CFLAGS += -Wvla
+
+# disable pointer signed / unsigned warnings in gcc 4.0
+KBUILD_CFLAGS += -Wno-pointer-sign
+
+# In order to make sure new function cast mismatches are not introduced
+# in the kernel (to avoid tripping CFI checking), the kernel should be
+# globally built with -Wcast-function-type.
+KBUILD_CFLAGS += $(call cc-option, -Wcast-function-type)
+
+# disable stringop warnings in gcc 8+
+KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
+
+# We'll want to enable this eventually, but it's not going away for 5.7 at least
+KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow)
+
+# Another good warning that we'll want to enable eventually
+KBUILD_CFLAGS += $(call cc-disable-warning, restrict)
+
+# Enabled with W=2, disabled by default as noisy
+ifdef CONFIG_CC_IS_GCC
+KBUILD_CFLAGS += -Wno-maybe-uninitialized
+endif
+
+# The allocators already balk at large sizes, so silence the compiler
+# warnings for bounds checks involving those possible values. While
+# -Wno-alloc-size-larger-than would normally be used here, earlier versions
+# of gcc (<9.1) weirdly don't handle the option correctly when _other_
+# warnings are produced (?!). Using -Walloc-size-larger-than=SIZE_MAX
+# doesn't work (as it is documented to), silently resolving to "0" prior to
+# version 9.1 (and producing an error more recently). Numeric values larger
+# than PTRDIFF_MAX also don't work prior to version 9.1, which are silently
+# ignored, continuing to default to PTRDIFF_MAX. So, left with no other
+# choice, we must perform a versioned check to disable this warning.
+# https://lore.kernel.org/lkml/20210824115859.187f272f@canb.auug.org.au
+KBUILD_CFLAGS-$(call gcc-min-version, 90100) += -Wno-alloc-size-larger-than
+KBUILD_CFLAGS += $(KBUILD_CFLAGS-y) $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
 
 # disable invalid "can't wrap" optimizations for signed / pointers
 KBUILD_CFLAGS	+= -fno-strict-overflow
@@ -1043,6 +1100,15 @@ ifdef CONFIG_CC_IS_GCC
 KBUILD_CFLAGS   += -fconserve-stack
 endif
 
+# Prohibit date/time macros, which would make the build non-deterministic
+KBUILD_CFLAGS   += -Werror=date-time
+
+# enforce correct pointer usage
+KBUILD_CFLAGS   += $(call cc-option,-Werror=incompatible-pointer-types)
+
+# Require designated initializers for all marked structures
+KBUILD_CFLAGS   += $(call cc-option,-Werror=designated-init)
+
 # change __FILE__ to the relative path from the srctree
 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
 
@@ -1082,14 +1148,13 @@ LDFLAGS_vmlinux	+= -X
 endif
 
 ifeq ($(CONFIG_RELR),y)
-# ld.lld before 15 did not support -z pack-relative-relocs.
+LDFLAGS_vmlinux	+= --pack-dyn-relocs=relr --use-android-relr-tags
-LDFLAGS_vmlinux	+= $(call ld-option,--pack-dyn-relocs=relr,-z pack-relative-relocs)
 endif
 
 # We never want expected sections to be placed heuristically by the
 # linker. All sections should be explicitly named in the linker script.
 ifdef CONFIG_LD_ORPHAN_WARN
-LDFLAGS_vmlinux += --orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL)
+LDFLAGS_vmlinux += --orphan-handling=warn
 endif
 
 # Align the bit size of userspace programs with the kernel
@@ -1144,6 +1209,10 @@ export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps
 
 PHONY += headers
 
+ext-mod-dir := ../sm8650-modules
+ext-mod-dirs := $(ext-mod-dir)/qcom/opensource/audio-kernel $(ext-mod-dir)/qcom/opensource/dataipa/drivers/platform/msm $(ext-mod-dir)/qcom/opensource/display-drivers $(ext-mod-dir)/qcom/opensource/video-kernel $(ext-mod-dir)/nxp/opensource/driver
+ext-mod-dirs := $(subst $(srctree)/,,$(ext-mod-dirs))
+
 #Default location for installed headers
 ifeq ($(KBUILD_EXTMOD),)
 PHONY += archheaders archscripts
@@ -1172,6 +1241,9 @@ ifeq ($(KBUILD_EXTMOD),)
 endif
 	$(Q)$(MAKE) $(hdr-inst)=$(hdr-prefix)include/uapi
 	$(Q)$(MAKE) $(hdr-inst)=$(hdr-prefix)arch/$(SRCARCH)/include/uapi
+	$(Q)for d in $(ext-mod-dirs); do \
+		$(MAKE) $(hdr-inst)=$$d/include/uapi; \
+	done
 
 # ---------------------------------------------------------------------------
 # Devicetree files
@@ -1251,12 +1323,28 @@ endif
 export KBUILD_VMLINUX_LIBS
 export KBUILD_LDS          := arch/$(SRCARCH)/kernel/vmlinux.lds
 
+# Recurse until adjust_autoksyms.sh is satisfied
+PHONY += autoksyms_recursive
 ifdef CONFIG_TRIM_UNUSED_KSYMS
 # For the kernel to actually contain only the needed exported symbols,
 # we have to build modules as well to determine what those symbols are.
+# (this can be evaluated only once include/config/auto.conf has been included)
 KBUILD_MODULES := 1
+
+autoksyms_recursive: $(build-dir) modules.order
+	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
+	  "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive"
 endif
 
+autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h)
+
+quiet_cmd_autoksyms_h = GEN     $@
+      cmd_autoksyms_h = mkdir -p $(dir $@); \
+			$(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@
+
+$(autoksyms_h):
+	$(call cmd,autoksyms_h)
+
 # '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14
 quiet_cmd_ar_vmlinux.a = AR      $@
       cmd_ar_vmlinux.a = \
@@ -1265,7 +1353,7 @@ quiet_cmd_ar_vmlinux.a = AR      $@
 	$(AR) mPiT $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt)
 
 targets += vmlinux.a
-vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE
+vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt autoksyms_recursive FORCE
 	$(call if_changed,ar_vmlinux.a)
 
 ifndef KBUILD_MIXED_TREE
@@ -1297,13 +1385,9 @@ endif
 # make sure no implicit rule kicks in
 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)): . ;
 
--include $(srctree)/scripts/sec_env.mk
+filechk_kernel.release = \
-
+	echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion \
-ifeq ($(origin KERNELRELEASE),file)
+		$(srctree) $(BRANCH) $(KMI_GENERATION))"
-filechk_kernel.release = $(srctree)/scripts/setlocalversion $(srctree)
-else
-filechk_kernel.release = echo $(KERNELRELEASE)
-endif
 
 # Store (new) KERNELRELEASE string in include/config/kernel.release
 include/config/kernel.release: FORCE
@@ -1325,7 +1409,7 @@ scripts: scripts_basic scripts_dtc
 PHONY += prepare archprepare
 
 archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \
-	asm-generic $(version_h) include/generated/utsrelease.h \
+	asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \
 	include/generated/compile.h include/generated/autoconf.h remove-stale-files
 
 prepare0: archprepare
@@ -1504,10 +1588,7 @@ dtbs_prepare: include/config/kernel.release scripts_dtc
 
 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),)
 export CHECK_DTBS=y
-endif
+dtbs: dt_binding_check
-
-ifneq ($(CHECK_DTBS),)
-dtbs_prepare: dt_binding_check
 endif
 
 dtbs_check: dtbs
@@ -1556,7 +1637,7 @@ endif
 # Build modules
 #
 
-# *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFO_BTF_MODULES
+# *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFOBTF_MODULES
 # is an exception.
 ifdef CONFIG_DEBUG_INFO_BTF_MODULES
 KBUILD_BUILTIN := 1
@@ -1569,6 +1650,40 @@ modules: modules_prepare
 modules_prepare: prepare
 	$(Q)$(MAKE) $(build)=scripts scripts/module.lds
 
+export modules_sign_only :=
+
+ifeq ($(CONFIG_MODULE_SIG),y)
+PHONY += modules_sign
+modules_sign: modules_install
+	@:
+
+# modules_sign is a subset of modules_install.
+# 'make modules_install modules_sign' is equivalent to 'make modules_install'.
+ifeq ($(filter modules_install,$(MAKECMDGOALS)),)
+modules_sign_only := y
+endif
+endif
+
+modinst_pre :=
+ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
+modinst_pre := __modinst_pre
+endif
+
+modules_install: $(modinst_pre)
+PHONY += __modinst_pre
+__modinst_pre:
+	@rm -rf $(MODLIB)/kernel
+	@rm -f $(MODLIB)/source
+	@mkdir -p $(MODLIB)/kernel
+	@ln -s $(abspath $(srctree)) $(MODLIB)/source
+	@if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \
+		rm -f $(MODLIB)/build ; \
+		ln -s $(CURDIR) $(MODLIB)/build ; \
+	fi
+	@sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order
+	@cp -f $(mixed-build-prefix)modules.builtin $(MODLIB)/
+	@cp -f $(or $(mixed-build-prefix),$(objtree)/)modules.builtin.modinfo $(MODLIB)/
+
 endif # CONFIG_MODULES
 
 ###
@@ -1579,10 +1694,10 @@ endif # CONFIG_MODULES
 # make distclean Remove editor backup files, patch leftover files and the like
 
 # Directories & files removed with 'make clean'
-CLEAN_FILES += vmlinux.symvers modules-only.symvers \
+CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \
 	       modules.builtin modules.builtin.modinfo modules.nsdeps \
-	       compile_commands.json .thinlto-cache rust/test \
+	       compile_commands.json .thinlto-cache rust/test rust/doc \
-	       rust-project.json .vmlinux.objs .vmlinux.export.c
+	       .vmlinux.objs .vmlinux.export.c
 
 # Directories & files removed with 'make mrproper'
 MRPROPER_FILES += include/config include/generated          \
@@ -1593,8 +1708,8 @@ MRPROPER_FILES += include/config include/generated          \
 		  certs/signing_key.pem \
 		  certs/x509.genkey \
 		  vmlinux-gdb.py \
-		  kernel.spec rpmbuild \
+		  *.spec \
-		  rust/libmacros.so
+		  rust/target.json rust/libmacros.so
 
 # clean - Delete most, but leave enough to build external modules
 #
@@ -1606,9 +1721,6 @@ vmlinuxclean:
 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
 	$(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean)
 
-legoclean:
-	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/lego/kclean.sh $(srctree)/.legofile
-
 clean: archclean vmlinuxclean resolve_btfids_clean
 
 # mrproper - Delete all generated files, including .config
@@ -1663,6 +1775,7 @@ help:
 	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
 	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
 	@echo  ''
+	@echo  'Configuration targets:'
 	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
 	@echo  ''
 	@echo  'Other generic targets:'
@@ -1761,9 +1874,8 @@ help:
 		printf "  %-16s - Show all of the above\\n" help-boards; \
 		echo '')
 
-	@echo  '  make V=n   [targets] 1: verbose build'
+	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
-	@echo  '                       2: give reason for rebuild of target'
+	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
-	@echo  '                       V=1 and V=2 can be combined with V=12'
 	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
 	@echo  '  make C=1   [targets] Check re-compiled c source with $$CHECK'
 	@echo  '                       (sparse by default)'
@@ -1775,10 +1887,6 @@ help:
 	@echo  '		3: more obscure warnings, can most likely be ignored'
 	@echo  '		e: warnings are being treated as errors'
 	@echo  '		Multiple levels can be combined with W=12 or W=123'
-	@$(if $(dtstree), \
-		echo '  make CHECK_DTBS=1 [targets] Check all generated dtb files against schema'; \
-		echo '         This can be applied both to "dtbs" and to individual "foo.dtb" targets' ; \
-		)
 	@echo  ''
 	@echo  'Execute "make" or "make all" to build all targets marked with [*] '
 	@echo  'For further info see the ./README file'
@@ -1801,7 +1909,7 @@ $(help-board-dirs): help-%:
 # Documentation targets
 # ---------------------------------------------------------------------------
 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
-	       linkcheckdocs dochelp refcheckdocs texinfodocs infodocs
+	       linkcheckdocs dochelp refcheckdocs
 PHONY += $(DOC_TARGETS)
 $(DOC_TARGETS):
 	$(Q)$(MAKE) $(build)=Documentation $@
@@ -1847,15 +1955,14 @@ rustfmt:
 rustfmtcheck: rustfmt_flags = --check
 rustfmtcheck: rustfmt
 
+# IDE support targets
+PHONY += rust-analyzer
+rust-analyzer:
+	$(Q)$(MAKE) $(build)=rust $@
+
 # Misc
 # ---------------------------------------------------------------------------
 
-PHONY += misc-check
-misc-check:
-	$(Q)$(srctree)/scripts/misc-check
-
-all: misc-check
-
 PHONY += scripts_gdb
 scripts_gdb: prepare0
 	$(Q)$(MAKE) $(build)=scripts/gdb
@@ -1867,8 +1974,6 @@ endif
 
 else # KBUILD_EXTMOD
 
-filechk_kernel.release = echo $(KERNELRELEASE)
-
 ###
 # External module support.
 # When building external modules the kernel used as basis is considered
@@ -1909,42 +2014,14 @@ help:
 	@echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
 	@echo  '                    (default: $(abspath $(INSTALL_HDR_PATH)))'
 	@echo  '  clean           - remove generated files in module directory only'
-	@echo  '  rust-analyzer	  - generate rust-project.json rust-analyzer support file'
 	@echo  ''
 
-ifndef CONFIG_MODULES
-modules modules_install: __external_modules_error
-__external_modules_error:
-	@echo >&2 '***'
-	@echo >&2 '*** The present kernel disabled CONFIG_MODULES.'
-	@echo >&2 '*** You cannot build or install external modules.'
-	@echo >&2 '***'
-	@false
-endif
-
 endif # KBUILD_EXTMOD
 
 # ---------------------------------------------------------------------------
 # Modules
 
-PHONY += modules modules_install modules_sign modules_prepare
+PHONY += modules modules_install modules_prepare
-
-modules_install:
-	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst \
-	sign-only=$(if $(filter modules_install,$(MAKECMDGOALS)),,y)
-
-ifeq ($(CONFIG_MODULE_SIG),y)
-# modules_sign is a subset of modules_install.
-# 'make modules_install modules_sign' is equivalent to 'make modules_install'.
-modules_sign: modules_install
-	@:
-else
-modules_sign:
-	@echo >&2 '***'
-	@echo >&2 '*** CONFIG_MODULE_SIG is disabled. You cannot sign modules.'
-	@echo >&2 '***'
-	@false
-endif
 
 ifdef CONFIG_MODULES
 
@@ -1962,10 +2039,28 @@ PHONY += modules_check
 modules_check: $(MODORDER)
 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $<
 
+quiet_cmd_depmod = DEPMOD  $(MODLIB)
+      cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
+                   $(KERNELRELEASE) $(mixed-build-prefix)
+
+modules_install:
+	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
+ifndef modules_sign_only
+	$(call cmd,depmod)
+endif
+
 else # CONFIG_MODULES
 
-modules:
+# Modules not configured
-	@:
+# ---------------------------------------------------------------------------
+
+modules modules_install:
+	@echo >&2 '***'
+	@echo >&2 '*** The present kernel configuration has modules disabled.'
+	@echo >&2 '*** To use the module feature, please run "make menuconfig" etc.'
+	@echo >&2 '*** to enable CONFIG_MODULES.'
+	@echo >&2 '***'
+	@exit 1
 
 KBUILD_MODULES :=
 
@@ -2003,7 +2098,7 @@ $(single-no-ko): $(build-dir)
 # Remove MODORDER when done because it is not the real one.
 PHONY += single_modules
 single_modules: $(single-no-ko) modules_prepare
-	$(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$(m:%.ko=%.o);) } > $(MODORDER)
+	$(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER)
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
 ifneq ($(KBUILD_MODPOST_NOFINAL),1)
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
@@ -2036,21 +2131,18 @@ clean: $(clean-dirs)
 		$(RCS_FIND_IGNORE) \
 		\( -name '*.[aios]' -o -name '*.rsi' -o -name '*.ko' -o -name '.*.cmd' \
 		-o -name '*.ko.*' \
-		-o -name '*.dtb' -o -name '*.dtbo' \
+		-o -name '*.dtb' -o -name '*.dtbo' -o -name '*.dtb.S' -o -name '*.dt.yaml' \
-		-o -name '*.dtb.S' -o -name '*.dtbo.S' \
-		-o -name '*.dt.yaml' \
 		-o -name '*.dwo' -o -name '*.lst' \
-		-o -name '*.su' -o -name '*.mod' \
+		-o -name '*.su' -o -name '*.mod' -o -name '*.usyms' \
 		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
 		-o -name '*.lex.c' -o -name '*.tab.[ch]' \
 		-o -name '*.asn1.[ch]' \
 		-o -name '*.symtypes' -o -name 'modules.order' \
+		-o -name '.tmp_*' \
 		-o -name '*.c.[012]*.*' \
 		-o -name '*.ll' \
 		-o -name '*.gcno' \
-		-o -name '*.*.symversions' \) -type f -print \
+		-o -name '*.*.symversions' \) -type f -print | xargs rm -f
-		-o -name '.tmp_*' -print \
-		| xargs rm -rf
 
 # Generate tags for editors
 # ---------------------------------------------------------------------------
@@ -2060,11 +2152,6 @@ quiet_cmd_tags = GEN     $@
 tags TAGS cscope gtags: FORCE
 	$(call cmd,tags)
 
-# IDE support targets
-PHONY += rust-analyzer
-rust-analyzer:
-	$(Q)$(MAKE) $(build)=rust $@
-
 # Script to generate missing namespace dependencies
 # ---------------------------------------------------------------------------
 
@@ -2137,7 +2224,8 @@ checkstack:
 	$(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
 
 kernelrelease:
-	@$(filechk_kernel.release)
+	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion \
+		$(srctree) $(BRANCH) $(KMI_GENERATION))"
 
 kernelversion:
 	@echo $(KERNELVERSION)
@@ -2145,10 +2233,6 @@ kernelversion:
 image_name:
 	@echo $(KBUILD_IMAGE)
 
-PHONY += run-command
-run-command:
-	$(Q)$(KBUILD_RUN_COMMAND)
-
 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
       cmd_rmfiles = rm -rf $(rm-files)
 

arch/arm64/configs/lego.config

@@ -63,8 +63,8 @@ CONFIG_USB_INTERFACE_LPM_LIST=y
 CONFIG_USB_NOTIFY_PROC_LOG=y
 CONFIG_USB_USING_ADVANCED_USBLOG=y
 CONFIG_CIRRUS_FIRMWARE_CL_DSP=m
-CONFIG_KPERFMON=y
+# CONFIG_KPERFMON is not set
-CONFIG_KPERFMON_BUILD=m
+# CONFIG_KPERFMON_BUILD is not set
 CONFIG_ANDROID_SWITCH=m
 # CONFIG_ANDROID_SWITCH_GPIO is not set
 CONFIG_HDM=m

include/linux/olog.pb.h

@@ -0,0 +1,88 @@
+// Generated by the protocol buffer compiler for perflog!!  DO NOT EDIT!
+#ifndef _OLOG_PROTOCOL_BUFFER_H_
+#define _OLOG_PROTOCOL_BUFFER_H_
+
+//EnumGenerator::GenerateDefinition in perflog_enum.cc
+enum OlogTestEnum_Type {
+  PERFLOG_DEF = 0,
+  PERFLOG_LOG = 1,
+  PERFLOG_EVT = 2,
+  PERFLOG_WRN = 3,
+  PERFLOG_CRI = 4
+};
+#if defined(KPERFMON_KERNEL)
+int OlogTestEnum_Type_maxnum = 5;
+char * OlogTestEnum_Type_strings[5] = {
+  "DEF",
+  "LOG",
+  "EVT",
+  "WRN",
+  "CRI"
+};
+#endif //KPERFMON_KERNEL
+//EnumGenerator::GenerateDefinition in perflog_enum.cc
+enum OlogTestEnum_ID {
+  PERFLOG_UNKNOWN = 0,
+  PERFLOG_LCDV = 2,
+  PERFLOG_ARGOS = 3,
+  PERFLOG_APPLAUNCH = 4,
+  PERFLOG_LOADAPK = 5,
+  PERFLOG_MAINLOOPER = 6,
+  PERFLOG_EXCESSIVECPUUSAGE = 7,
+  PERFLOG_ACTIVITYSLOW = 8,
+  PERFLOG_BROADCAST = 9,
+  PERFLOG_STORE = 10,
+  PERFLOG_CPUTOP = 11,
+  PERFLOG_LCD = 12,
+  PERFLOG_CPU = 13,
+  PERFLOG_LOCKCONTENTION = 14,
+  PERFLOG_CPUFREQ = 15,
+  PERFLOG_MEMPRESSURE = 16,
+  PERFLOG_INPUTD = 17,
+  PERFLOG_AMPSS = 18,
+  PERFLOG_SERVICEMANAGERSLOW = 19,
+  PERFLOG_IPCSTARVE = 20,
+  PERFLOG_SCREENSHOT = 21,
+  PERFLOG_MUTEX = 22,
+  PERFLOG_SYSTEMSERVER = 23,
+  PERFLOG_PERFETTOLOGGINGENABLED = 24,
+  PERFLOG_BIGDATA = 25,
+  PERFLOG_PSI = 26,
+  PERFLOG_JANK = 27
+};
+#if defined(KPERFMON_KERNEL)
+int OlogTestEnum_ID_maxnum = 28;
+char * OlogTestEnum_ID_strings[28] = {
+  "UNKNOWN",
+  " ",
+  "LCDV",
+  "ARGOS",
+  "APPLAUNCH",
+  "LOADAPK",
+  "MAINLOOPER",
+  "EXCESSIVECPUUSAGE",
+  "ACTIVITYSLOW",
+  "BROADCAST",
+  "STORE",
+  "CPUTOP",
+  "LCD",
+  "CPU",
+  "LOCKCONTENTION",
+  "CPUFREQ",
+  "MEMPRESSURE",
+  "INPUTD",
+  "AMPSS",
+  "SERVICEMANAGERSLOW",
+  "IPCSTARVE",
+  "SCREENSHOT",
+  "MUTEX",
+  "SYSTEMSERVER",
+  "PERFETTOLOGGINGENABLED",
+  "BIGDATA",
+  "PSI",
+  "JANK"
+};
+#endif //KPERFMON_KERNEL
+
+#endif //_OLOG_PROTOCOL_BUFFER_H_
+

include/linux/ologk.h

@@ -0,0 +1,15 @@
+#ifndef _OLOG_KERNEL_H_
+#define _OLOG_KERNEL_H_
+
+#include <linux/unistd.h>
+#include "olog.pb.h"
+
+#define OLOG_CPU_FREQ_FILTER   1500000
+#define PERFLOG_MUTEX_THRESHOLD   20
+
+#define ologk(...) _perflog(PERFLOG_LOG, PERFLOG_UNKNOWN, __VA_ARGS__)
+#define perflog(...) _perflog(PERFLOG_LOG, __VA_ARGS__)
+extern void _perflog(int type, int logid, const char *fmt, ...);
+extern void perflog_evt(int logid, int arg1);
+
+#endif