Add clang-tidy support for static analysis

.github/workflows/pr-build.yaml

@@ -106,3 +106,20 @@ jobs:
 
       - name: Run Makefile build
         run: make -j radostrace osdtrace
+
+  clang-tidy:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout code and submodules
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y g++ clang clang-tidy libelf-dev libc6-dev-i386 libdw-dev
+
+      - name: Run clang-tidy
+        run: make -j clang-tidy

Makefile

@@ -78,7 +78,7 @@ else
 endif
 
 # Main targets
-.PHONY: all clean
+.PHONY: all clean clang-tidy
 all: $(OSDTRACE_SRC)/ceph_btf_local.h $(EMBEDDED_DWARF_HDR) $(PROG_OBJS)
 
 install:
@@ -116,6 +116,21 @@ clean:
 	$(call msg,CLEAN)
 	$(Q)rm -rf $(OUTPUT) $(PROG_OBJS) $(DOCDIR)/*.8.gz $(DOCDIR)/*.in $(OSDTRACE_SRC)/ceph_btf_local.h $(EMBEDDED_DWARF_HDR)
 
+# clang-tidy static analysis (requires skeleton headers in .output/)
+CLANG_TIDY ?= clang-tidy
+TIDY_SRCS := $(OSDTRACE_SRC)/osdtrace.cc \
+             $(OSDTRACE_SRC)/radostrace.cc \
+             $(OSDTRACE_SRC)/kfstrace.cc \
+             $(OSDTRACE_SRC)/dwarf_parser.cc \
+             $(OSDTRACE_SRC)/version_utils.cc
+
+clang-tidy: $(OUTPUT)/osdtrace.skel.h $(OUTPUT)/radostrace.skel.h $(OUTPUT)/kfstrace.skel.h $(EMBEDDED_DWARF_HDR)
+	$(call msg,TIDY)
+	$(Q)for src in $(TIDY_SRCS); do \
+		printf '  %-8s %s\n' "TIDY" "$$src"; \
+		$(CLANG_TIDY) $$src -- $(CXXFLAGS) $(VERSION_DEFINES) || exit 1; \
+	done
+
 $(OUTPUT) $(OUTPUT)/libbpf $(BPFTOOL_OUTPUT):
 	$(call msg,MKDIR,$@)
 	$(Q)mkdir -p $@

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = lint, pylint, pep8, test
+envlist = lint, pylint, pep8, test, clang-tidy
 
 
 [vars]
@@ -31,3 +31,10 @@ deps =
 commands =
     pytest --fixtures tests/
     pytest tests/ -v
+
+[testenv:clang-tidy]
+description = run clang-tidy static analysis on C++ sources
+skip_install = true
+allowlist_externals = make
+commands =
+    make clang-tidy