Since the __sync functions have been dropped, This patch removes unused build and checking for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT in perf tool.
Note, there have a test for SYNC_COMPARE_AND_SWAP and the test file is located in build/feature/test-sync-compare-and-swap.c. Since there still has several components using the sync functions, it's deliberately to not be removed.
$ cd linux/tools $ git grep __sync_val_compare_and_swap | awk '{ printf $1"\n" }' build/feature/test-sync-compare-and-swap.c: include/asm-generic/atomic-gcc.h: testing/selftests/bpf/progs/atomics.c: testing/selftests/bpf/progs/atomics.c: testing/selftests/bpf/progs/atomics.c: testing/selftests/bpf/progs/atomics.c: testing/selftests/futex/include/atomic.h: testing/selftests/futex/include/futextest.h:
Signed-off-by: Leo Yan leo.yan@linaro.org --- tools/perf/Makefile.config | 4 ---- tools/perf/util/auxtrace.c | 5 ----- 2 files changed, 9 deletions(-)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index eb8e487ef90b..4a0d9a6defc7 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -349,10 +349,6 @@ CXXFLAGS += $(INC_FLAGS)
LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
-ifeq ($(feature-sync-compare-and-swap), 1) - CFLAGS += -DHAVE_SYNC_COMPARE_AND_SWAP_SUPPORT -endif - ifeq ($(feature-pthread-attr-setaffinity-np), 1) CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP endif diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index 44bd04dbb6d6..db6255b55c90 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -130,11 +130,6 @@ int auxtrace_mmap__mmap(struct auxtrace_mmap *mm, return 0; }
-#if BITS_PER_LONG != 64 && !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT) - pr_err("Cannot use AUX area tracing mmaps\n"); - return -1; -#endif - pc->aux_offset = mp->offset; pc->aux_size = mp->len;