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Commit f6d31369 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Add feature test for __sync_val_compare_and_swap 



Add a feature test for __sync_val_compare_and_swap() and
__sync_bool_compare_and_swap()

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1405332185-4050-30-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a8a8f3eb

tools/perf/config/Makefile

+6 −0
Original line number Original line Diff line number Diff line
@@ -164,6 +164,7 @@ CORE_FEATURE_TESTS = \ 
	backtrace			\

	backtrace			\

	dwarf				\

	dwarf				\

	fortify-source			\

	fortify-source			\

	sync-compare-and-swap		\

	glibc				\

	glibc				\

	gtk2				\

	gtk2				\

	gtk2-infobar			\

	gtk2-infobar			\
@@ -199,6 +200,7 @@ LIB_FEATURE_TESTS = \ 
VF_FEATURE_TESTS =			\

VF_FEATURE_TESTS =			\

	backtrace			\

	backtrace			\

	fortify-source			\

	fortify-source			\

	sync-compare-and-swap		\

	gtk2-infobar			\

	gtk2-infobar			\

	libelf-getphdrnum		\

	libelf-getphdrnum		\

	libelf-mmap			\

	libelf-mmap			\
@@ -272,6 +274,10 @@ CFLAGS += -I$(LIB_INCLUDE) 




CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE

CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE





ifeq ($(feature-sync-compare-and-swap), 1)

  CFLAGS += -DHAVE_SYNC_COMPARE_AND_SWAP_SUPPORT

endif



ifndef NO_BIONIC

ifndef NO_BIONIC

  $(call feature_check,bionic)

  $(call feature_check,bionic)

  ifeq ($(feature-bionic), 1)

  ifeq ($(feature-bionic), 1)

tools/perf/config/feature-checks/Makefile

+4 −0
Original line number Original line Diff line number Diff line
@@ -5,6 +5,7 @@ FILES= \ 
	test-bionic.bin			\

	test-bionic.bin			\

	test-dwarf.bin			\

	test-dwarf.bin			\

	test-fortify-source.bin		\

	test-fortify-source.bin		\

	test-sync-compare-and-swap.bin	\

	test-glibc.bin			\

	test-glibc.bin			\

	test-gtk2.bin			\

	test-gtk2.bin			\

	test-gtk2-infobar.bin		\

	test-gtk2-infobar.bin		\
@@ -141,6 +142,9 @@ test-timerfd.bin: 
test-libdw-dwarf-unwind.bin:

test-libdw-dwarf-unwind.bin:

	$(BUILD)

	$(BUILD)





test-sync-compare-and-swap.bin:

	$(BUILD) -Werror



-include *.d

-include *.d





###############################

###############################

tools/perf/config/feature-checks/test-all.c

+5 −0
Original line number Original line Diff line number Diff line
@@ -89,6 +89,10 @@ 
# include "test-libdw-dwarf-unwind.c"

# include "test-libdw-dwarf-unwind.c"

#undef main

#undef main





#define main main_test_sync_compare_and_swap

# include "test-sync-compare-and-swap.c"

#undef main



int main(int argc, char *argv[])

int main(int argc, char *argv[])

{

{

	main_test_libpython();

	main_test_libpython();
@@ -111,6 +115,7 @@ int main(int argc, char *argv[]) 
	main_test_timerfd();

	main_test_timerfd();

	main_test_stackprotector_all();

	main_test_stackprotector_all();

	main_test_libdw_dwarf_unwind();

	main_test_libdw_dwarf_unwind();

	main_test_sync_compare_and_swap(argc, argv);





	return 0;

	return 0;

}
 
}

tools/perf/config/feature-checks/test-sync-compare-and-swap.c

0 → 100644
+14 −0
Original line number Original line Diff line number Diff line 
#include <stdint.h>



volatile uint64_t x;



int main(int argc, char *argv[])

{

	uint64_t old, new = argc;



	argv = argv;

	do {

		old = __sync_val_compare_and_swap(&x, 0, 0);

	} while (!__sync_bool_compare_and_swap(&x, old, new));

	return old == new;

}