[PATCH v4 09/11] tools: Remove feature-sync-compare-and-swap feature detection

From: Leo Yan
Date: Sun Jul 11 2021 - 06:41:49 EST


Since the __sync functions have been removed from perf, it's needless
for perf tool to test the feature sync-compare-and-swap.

The feature test is not used by any other components, remove it.

Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
---
tools/build/Makefile.feature | 1 -
tools/build/feature/Makefile | 4 ----
tools/build/feature/test-all.c | 4 ----
tools/build/feature/test-sync-compare-and-swap.c | 15 ---------------
4 files changed, 24 deletions(-)
delete mode 100644 tools/build/feature/test-sync-compare-and-swap.c

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 04a8e3db8a54..3dd2f68366f9 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -34,7 +34,6 @@ FEATURE_TESTS_BASIC := \
dwarf_getlocations \
eventfd \
fortify-source \
- sync-compare-and-swap \
get_current_dir_name \
gettid \
glibc \
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index ec203e28407f..eff55d287db1 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -9,7 +9,6 @@ FILES= \
test-dwarf_getlocations.bin \
test-eventfd.bin \
test-fortify-source.bin \
- test-sync-compare-and-swap.bin \
test-get_current_dir_name.bin \
test-glibc.bin \
test-gtk2.bin \
@@ -260,9 +259,6 @@ $(OUTPUT)test-libdw-dwarf-unwind.bin:
$(OUTPUT)test-libbabeltrace.bin:
$(BUILD) # -lbabeltrace provided by $(FEATURE_CHECK_LDFLAGS-libbabeltrace)

-$(OUTPUT)test-sync-compare-and-swap.bin:
- $(BUILD)
-
$(OUTPUT)test-compile-32.bin:
$(CC) -m32 -o $@ test-compile.c

diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 464873883396..920439527291 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -106,10 +106,6 @@
# include "test-libdw-dwarf-unwind.c"
#undef main

-#define main main_test_sync_compare_and_swap
-# include "test-sync-compare-and-swap.c"
-#undef main
-
#define main main_test_zlib
# include "test-zlib.c"
#undef main
diff --git a/tools/build/feature/test-sync-compare-and-swap.c b/tools/build/feature/test-sync-compare-and-swap.c
deleted file mode 100644
index 3bc6b0768a53..000000000000
--- a/tools/build/feature/test-sync-compare-and-swap.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <stdint.h>
-
-volatile uint64_t x;
-
-int main(int argc, char *argv[])
-{
- uint64_t old, new = argc;
-
- (void)argv;
- do {
- old = __sync_val_compare_and_swap(&x, 0, 0);
- } while (!__sync_bool_compare_and_swap(&x, old, new));
- return old == new;
-}
--
2.25.1