perf python: Clean up build dependencies

The python build now depends on libraries and doesn't use
python-ext-sources except for the util/python.c dependency. Switch to
just directly depending on that file and util/setup.py. This allows
the removal of python-ext-sources.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: James Clark <james.clark@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Gary Guo <gary@garyguo.net>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Cc: Ze Gao <zegao2021@gmail.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andrei Vagin <avagin@google.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Guo Ren <guoren@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Benno Lossin <benno.lossin@proton.me>
Cc: Björn Roy Baron <bjorn3_gh@protonmail.com>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240625214117.953777-9-irogers@google.com

tools/perf/Makefile.perf

@@ -380,14 +380,6 @@ python-clean := $(call QUIET_CLEAN, python) $(RM) -r $(PYTHON_EXTBUILD) $(OUTPUT
 # Use the detected configuration
 -include $(OUTPUT).config-detected
 
-ifeq ($(CONFIG_LIBTRACEEVENT),y)
-  PYTHON_EXT_SRCS := $(shell grep -v ^\# util/python-ext-sources)
-else
-  PYTHON_EXT_SRCS := $(shell grep -v ^\#\\\|util/trace-event.c\\\|util/trace-event-parse.c util/python-ext-sources)
-endif
-
-PYTHON_EXT_DEPS := util/python-ext-sources util/setup.py $(LIBAPI)
-
 SCRIPTS = $(patsubst %.sh,%,$(SCRIPT_SH))
 
 PROGRAMS += $(OUTPUT)perf
@@ -715,7 +707,7 @@ all: shell_compatibility_test $(ALL_PROGRAMS) $(LANG_BINDINGS) $(OTHER_PROGRAMS)
 # Create python binding output directory if not already present
 $(shell [ -d '$(OUTPUT)python' ] || mkdir -p '$(OUTPUT)python')
 
-$(OUTPUT)python/perf$(PYTHON_EXTENSION_SUFFIX): $(PYTHON_EXT_SRCS) $(PYTHON_EXT_DEPS) $(PERFLIBS)
+$(OUTPUT)python/perf$(PYTHON_EXTENSION_SUFFIX): util/python.c util/setup.py $(PERFLIBS)
 	$(QUIET_GEN)LDSHARED="$(CC) -pthread -shared" \
         CFLAGS='$(CFLAGS)' LDFLAGS='$(LDFLAGS) $(LIBS)' \
 	  $(PYTHON_WORD) util/setup.py \

tools/perf/util/python-ext-sources

-#
-# List of files needed by perf python extension
-#
-# Each source file must be placed on its own line so that it can be
-# processed by Makefile and util/setup.py accordingly.
-#
-
-util/python.c
-../lib/ctype.c
-util/cap.c
-util/evlist.c
-util/evsel.c
-util/evsel_fprintf.c
-util/perf_event_attr_fprintf.c
-util/cpumap.c
-util/memswap.c
-util/mmap.c
-util/namespaces.c
-../lib/bitmap.c
-../lib/find_bit.c
-../lib/list_sort.c
-../lib/hweight.c
-../lib/string.c
-../lib/vsprintf.c
-util/thread_map.c
-util/util.c
-util/cgroup.c
-util/parse-branch-options.c
-util/rblist.c
-util/counts.c
-util/print_binary.c
-util/strlist.c
-util/trace-event.c
-util/trace-event-parse.c
-../lib/rbtree.c
-util/string.c
-util/symbol_fprintf.c
-util/units.c
-util/affinity.c
-util/rwsem.c
-util/hashmap.c
-util/perf_regs.c
-util/fncache.c
-util/rlimit.c
-util/perf-regs-arch/perf_regs_aarch64.c
-util/perf-regs-arch/perf_regs_arm.c
-util/perf-regs-arch/perf_regs_csky.c
-util/perf-regs-arch/perf_regs_loongarch.c
-util/perf-regs-arch/perf_regs_mips.c
-util/perf-regs-arch/perf_regs_powerpc.c
-util/perf-regs-arch/perf_regs_riscv.c
-util/perf-regs-arch/perf_regs_s390.c
-util/perf-regs-arch/perf_regs_x86.c