From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes Skip the xarray reservation loop when clearing all memory attributes, as storing NULL only erases the entry and never needs to allocate, so no reservation (and no cleanup of a failed one) is required in that case. Suggested-by: Sean Christopherson Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- Documentation/devicetree/bindings/Makefile | 103 +++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 Documentation/devicetree/bindings/Makefile (limited to 'Documentation/devicetree/bindings/Makefile') diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile new file mode 100644 index 000000000..6b4b4f51c --- /dev/null +++ b/Documentation/devicetree/bindings/Makefile @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: GPL-2.0 +DT_DOC_CHECKER ?= dt-doc-validate +DT_EXTRACT_EX ?= dt-extract-example +DT_MK_SCHEMA ?= dt-mk-schema + +DT_SCHEMA_LINT = $(shell which yamllint || \ + echo "warning: python package 'yamllint' not installed, skipping" >&2) + +DT_SCHEMA_MIN_VERSION = 2024.4 + +PHONY += check_dtschema_version +check_dtschema_version: + @which $(DT_DOC_CHECKER) >/dev/null || \ + { echo "Error: '$(DT_DOC_CHECKER)' not found!" >&2; \ + echo "Ensure dtschema python package is installed and in your PATH." >&2; \ + echo "Current PATH is:" >&2; \ + echo "$$PATH" >&2; false; } + @{ echo $(DT_SCHEMA_MIN_VERSION); \ + $(DT_DOC_CHECKER) --version 2>/dev/null || echo 0; } | sort -Vc >/dev/null || \ + { echo "ERROR: dtschema minimum version is v$(DT_SCHEMA_MIN_VERSION)" >&2; false; } + +quiet_cmd_extract_ex = DTEX $@ + cmd_extract_ex = $(DT_EXTRACT_EX) $< > $@ + +$(obj)/%.example.dts: $(src)/%.yaml check_dtschema_version FORCE + $(call if_changed,extract_ex) + +find_all_cmd = find $(src) \( -name '*.yaml' ! \ + -name 'processed-schema*' \) + +find_cmd = $(find_all_cmd) | \ + sed 's|^$(srctree)/||' | \ + grep -F -e "$(subst :," -e ",$(DT_SCHEMA_FILES))" | \ + sed 's|^|$(srctree)/|' +CHK_DT_EXAMPLES := $(patsubst $(srctree)/%.yaml,%.example.dtb, \ + $(shell $(find_cmd) | xargs grep -l '^examples:')) + +quiet_cmd_yamllint = LINT $(src) + cmd_yamllint = ($(find_cmd) | \ + xargs -n200 -P$$(nproc) \ + $(DT_SCHEMA_LINT) -f parsable -c $(src)/.yamllint >&2) \ + && touch $@ || true + +quiet_cmd_chk_bindings = CHKDT $(src) + cmd_chk_bindings = ($(find_cmd) | \ + xargs -n200 -P$$(nproc) $(DT_DOC_CHECKER) -u $(src)) \ + && touch $@ || true + +DT_CHK_STYLE = $(srctree)/scripts/dtc/dt-check-style + +# Feed the file list to the checker via @argfile in a single Python +# process so the ruamel.yaml import is paid once. scripts/jobserver-exec +# claims slots from the GNU make jobserver and exposes the count via +# $PARALLELISM, which dt-check-style picks up to size its worker pool. +quiet_cmd_chk_style = STYLE $(src) + cmd_chk_style = f=$$(mktemp) && $(find_cmd) > $$f && \ + $(PYTHON3) $(srctree)/scripts/jobserver-exec \ + $(PYTHON3) $(DT_CHK_STYLE) @$$f \ + && touch $@ || true; rm -f $$f + +quiet_cmd_mk_schema = SCHEMA $@ + cmd_mk_schema = f=$$(mktemp) ; \ + $(find_all_cmd) > $$f ; \ + $(DT_MK_SCHEMA) -j $(DT_MK_SCHEMA_FLAGS) @$$f > $@ ; \ + rm -f $$f + +DT_DOCS = $(patsubst $(srctree)/%,%,$(shell $(find_all_cmd))) + +override DTC_FLAGS := \ + -Wno-avoid_unnecessary_addr_size \ + -Wno-unique_unit_address \ + -Wunique_unit_address_if_enabled + +$(obj)/processed-schema.json: $(DT_DOCS) check_dtschema_version FORCE + $(call if_changed,mk_schema) + +targets += .dt-binding.checked .yamllint.checked .dt-style.checked +$(obj)/.yamllint.checked: $(DT_DOCS) $(src)/.yamllint FORCE + $(if $(DT_SCHEMA_LINT),$(call if_changed,yamllint),) + +$(obj)/.dt-binding.checked: $(DT_DOCS) FORCE + $(call if_changed,chk_bindings) + +$(obj)/.dt-style.checked: $(DT_DOCS) FORCE + $(call if_changed,chk_style) + +always-y += processed-schema.json +targets += $(patsubst $(obj)/%,%, $(CHK_DT_EXAMPLES)) +targets += $(patsubst $(obj)/%.dtb,%.dts, $(CHK_DT_EXAMPLES)) + +# Hack: avoid 'Argument list too long' error for 'make clean'. Remove most of +# build artifacts here before they are processed by scripts/Makefile.clean +clean-files = $(shell find $(obj) \( -name '*.example.dts' -o \ + -name '*.example.dtb' \) -delete 2>/dev/null) + +dt_compatible_check: $(obj)/processed-schema.json + $(Q)$(srctree)/scripts/dtc/dt-extract-compatibles $(srctree) | xargs dt-check-compatible -v -s $< + +PHONY += dt_binding_check_one +dt_binding_check_one: $(obj)/.dt-binding.checked $(obj)/.yamllint.checked $(obj)/.dt-style.checked + +PHONY += dt_binding_check +dt_binding_check: dt_binding_check_one $(CHK_DT_EXAMPLES) -- cgit v1.3.1