tools/perf/build: Speed up auto-detection of features by adding a 'test-all' target
Concatenate all feature checks into test-all.c. This can be built and checked faster than all the individual tests. If test-all fails then we still check all the individual features, so this is a pure speedup, it should have no effects on functionality. Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/n/tip-5hlcb2qorzwfwrWTjiygjjih@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
parent
fb1c9185e3
commit
baa9c30e1e
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@ -89,17 +89,21 @@ CFLAGS += -std=gnu99
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EXTLIBS = -lelf -lpthread -lrt -lm -ldl
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feature_check = $(eval $(feature_check_code)); $(info CHK: config/feature-checks/test-$(1))
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feature_check = $(eval $(feature_check_code))
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define feature_check_code
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feature-$(2) := $(shell make -C config/feature-checks test-$1 >/dev/null 2>/dev/null && echo 1 || echo 0)
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feature-$(1) := $(shell $(MAKE) -C config/feature-checks test-$1 >/dev/null 2>/dev/null && echo 1 || echo 0)
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endef
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feature_set = $(eval $(feature_set_code))
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define feature_set_code
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feature-$(1) := 1
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endef
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#
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# Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
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#
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$(info Testing features:)
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$(shell make -i -j -C config/feature-checks >/dev/null 2>&1)
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$(info done)
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$(info )
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$(info Auto-detecting system features:)
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FEATURE_TESTS = \
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hello \
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@ -126,7 +130,36 @@ FEATURE_TESTS = \
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backtrace \
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libnuma
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$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
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#
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# Special fast-path for the 'all features are available' case:
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#
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$(call feature_check,all)
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ifeq ($(feature-all), 1)
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$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
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else
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$(shell $(MAKE) -i -j -C config/feature-checks >/dev/null 2>&1)
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$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
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endif
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feature_print = $(eval $(feature_print_code))
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#
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# Print the result of the feature test:
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#
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define feature_print_code
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ifeq ($(feature-$(1)), 1)
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MSG := $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
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else
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MSG := $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
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endif
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$(info $(MSG))
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endef
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$(foreach feat,$(FEATURE_TESTS) DUMMY,$(call feature_print,$(feat)))
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# newline at the end of the feature printouts:
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$(info )
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ifeq ($(feature-stackprotector-all), 1)
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CFLAGS += -fstack-protector-all
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@ -32,6 +32,9 @@ BUILD = $(CC) -o $(OUTPUT)$@ $@.c
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###############################
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test-all:
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$(BUILD) -Werror -fstack-protector -fstack-protector-all -Wvolatile-register-var -O2 -Werror -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lunwind -lunwind-x86_64 -lelf -laudit -I/usr/include/slang -lslang $(shell pkg-config --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='perf' -DPACKAGE=perf -lbfd -ldl
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test-hello:
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$(BUILD)
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@ -0,0 +1,196 @@
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#pragma GCC diagnostic ignored "-Wstrict-prototypes"
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#include <Python.h>
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#include <EXTERN.h>
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#include <perl.h>
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#include <stdio.h>
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#include <libelf.h>
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#include <gnu/libc-version.h>
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#include <dwarf.h>
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#include <elfutils/libdw.h>
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#include <elfutils/version.h>
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#include <libelf.h>
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#include <libunwind.h>
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#include <stdlib.h>
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#include <libaudit.h>
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#include <slang.h>
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#include <gtk/gtk.h>
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#include <bfd.h>
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#include <stdio.h>
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#include <execinfo.h>
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#include <stdio.h>
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#include <numa.h>
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#include <numaif.h>
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#pragma GCC diagnostic error "-Wstrict-prototypes"
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int main1(void)
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{
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return puts("hi");
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}
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int main2(void)
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{
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return puts("hi");
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}
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int main3(void)
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{
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return puts("hi");
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}
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int main4(void)
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{
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Elf *elf = elf_begin(0, ELF_C_READ, 0);
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return (long)elf;
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}
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#
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int main5(void)
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{
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Elf *elf = elf_begin(0, ELF_C_READ_MMAP, 0);
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return (long)elf;
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}
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int main6(void)
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{
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const char *version = gnu_get_libc_version();
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return (long)version;
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}
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int main7(void)
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{
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Dwarf *dbg = dwarf_begin(0, DWARF_C_READ);
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return (long)dbg;
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}
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int main8(void)
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{
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size_t dst;
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return elf_getphdrnum(0, &dst);
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}
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extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
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unw_word_t ip,
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unw_dyn_info_t *di,
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unw_proc_info_t *pi,
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int need_unwind_info, void *arg);
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#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table)
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int main9(void)
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{
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unw_addr_space_t addr_space;
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addr_space = unw_create_addr_space(NULL, 0);
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unw_init_remote(NULL, addr_space, NULL);
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dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL);
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return 0;
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}
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int main10(void)
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{
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printf("error message: %s\n", audit_errno_to_name(0));
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return audit_open();
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}
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int main11(void)
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{
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return SLsmg_init_smg();
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}
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int main12(int argc, char *argv[])
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{
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gtk_init(&argc, &argv);
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return 0;
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}
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int main13(void)
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{
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gtk_info_bar_new();
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return 0;
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}
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int main14(void)
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{
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perl_alloc();
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return 0;
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}
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int main15(void)
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{
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Py_Initialize();
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return 0;
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}
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#if PY_VERSION_HEX >= 0x03000000
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#error
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#endif
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int main16(void)
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{
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return 0;
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}
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int main17(void)
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{
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bfd_demangle(0, 0, 0);
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return 0;
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}
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void exit_function(int x, void *y)
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{
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}
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int main18(void)
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{
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return on_exit(exit_function, NULL);
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}
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int main19(void)
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{
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void *backtrace_fns[1];
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size_t entries;
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entries = backtrace(backtrace_fns, 1);
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backtrace_symbols(backtrace_fns, entries);
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return 0;
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}
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int main20(void)
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{
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numa_available();
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return 0;
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}
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int main(int argc, char *argv[])
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{
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main1();
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main2();
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main3();
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main4();
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main5();
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main6();
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main7();
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main8();
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main9();
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main10();
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main11();
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main12(argc, argv);
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main13();
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main14();
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main15();
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main16();
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main17();
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main18();
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main19();
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main20();
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return 0;
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}
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