diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/benchmarks')
5 files changed, 98 insertions, 7 deletions
diff --git a/tools/testing/selftests/powerpc/benchmarks/.gitignore b/tools/testing/selftests/powerpc/benchmarks/.gitignore index 6fa673316..bce49ebd8 100644 --- a/tools/testing/selftests/powerpc/benchmarks/.gitignore +++ b/tools/testing/selftests/powerpc/benchmarks/.gitignore @@ -1,2 +1,4 @@ gettimeofday context_switch +mmap_bench +futex_bench
\ No newline at end of file diff --git a/tools/testing/selftests/powerpc/benchmarks/Makefile b/tools/testing/selftests/powerpc/benchmarks/Makefile index 912445ff7..a9adfb7de 100644 --- a/tools/testing/selftests/powerpc/benchmarks/Makefile +++ b/tools/testing/selftests/powerpc/benchmarks/Makefile @@ -1,4 +1,4 @@ -TEST_PROGS := gettimeofday context_switch +TEST_PROGS := gettimeofday context_switch mmap_bench futex_bench CFLAGS += -O2 @@ -7,6 +7,7 @@ all: $(TEST_PROGS) $(TEST_PROGS): ../harness.c context_switch: ../utils.c +context_switch: CFLAGS += -maltivec -mvsx -mabi=altivec context_switch: LDLIBS += -lpthread include ../../lib.mk diff --git a/tools/testing/selftests/powerpc/benchmarks/context_switch.c b/tools/testing/selftests/powerpc/benchmarks/context_switch.c index 7b785941a..a36883ad4 100644 --- a/tools/testing/selftests/powerpc/benchmarks/context_switch.c +++ b/tools/testing/selftests/powerpc/benchmarks/context_switch.c @@ -25,7 +25,9 @@ #include <sys/types.h> #include <sys/shm.h> #include <linux/futex.h> - +#ifdef __powerpc__ +#include <altivec.h> +#endif #include "../utils.h" static unsigned int timeout = 30; @@ -37,12 +39,15 @@ static int touch_fp = 1; double fp; static int touch_vector = 1; -typedef int v4si __attribute__ ((vector_size (16))); -v4si a, b, c; +vector int a, b, c; #ifdef __powerpc__ static int touch_altivec = 1; +/* + * Note: LTO (Link Time Optimisation) doesn't play well with this function + * attribute. Be very careful enabling LTO for this test. + */ static void __attribute__((__target__("no-vsx"))) altivec_touch_fn(void) { c = a + b; @@ -369,11 +374,11 @@ static void usage(void) fprintf(stderr, "\t\t--process\tUse processes (default threads)\n"); fprintf(stderr, "\t\t--timeout=X\tDuration in seconds to run (default 30)\n"); fprintf(stderr, "\t\t--vdso\t\ttouch VDSO\n"); - fprintf(stderr, "\t\t--fp\t\ttouch FP\n"); + fprintf(stderr, "\t\t--no-fp\t\tDon't touch FP\n"); #ifdef __powerpc__ - fprintf(stderr, "\t\t--altivec\ttouch altivec\n"); + fprintf(stderr, "\t\t--no-altivec\tDon't touch altivec\n"); #endif - fprintf(stderr, "\t\t--vector\ttouch vector\n"); + fprintf(stderr, "\t\t--no-vector\tDon't touch vector\n"); } int main(int argc, char *argv[]) diff --git a/tools/testing/selftests/powerpc/benchmarks/futex_bench.c b/tools/testing/selftests/powerpc/benchmarks/futex_bench.c new file mode 100644 index 000000000..2fc711d91 --- /dev/null +++ b/tools/testing/selftests/powerpc/benchmarks/futex_bench.c @@ -0,0 +1,42 @@ +/* + * Copyright 2016, Anton Blanchard, Michael Ellerman, IBM Corp. + * Licensed under GPLv2. + */ + +#define _GNU_SOURCE + +#include <stdio.h> +#include <sys/syscall.h> +#include <time.h> +#include <unistd.h> +#include <linux/futex.h> + +#include "utils.h" + +#define ITERATIONS 100000000 + +#define futex(A, B, C, D, E, F) syscall(__NR_futex, A, B, C, D, E, F) + +int test_futex(void) +{ + struct timespec ts_start, ts_end; + unsigned long i = ITERATIONS; + + clock_gettime(CLOCK_MONOTONIC, &ts_start); + + while (i--) { + unsigned int addr = 0; + futex(&addr, FUTEX_WAKE, 1, NULL, NULL, 0); + } + + clock_gettime(CLOCK_MONOTONIC, &ts_end); + + printf("time = %.6f\n", ts_end.tv_sec - ts_start.tv_sec + (ts_end.tv_nsec - ts_start.tv_nsec) / 1e9); + + return 0; +} + +int main(void) +{ + return test_harness(test_futex, "futex_bench"); +} diff --git a/tools/testing/selftests/powerpc/benchmarks/mmap_bench.c b/tools/testing/selftests/powerpc/benchmarks/mmap_bench.c new file mode 100644 index 000000000..8d084a2d6 --- /dev/null +++ b/tools/testing/selftests/powerpc/benchmarks/mmap_bench.c @@ -0,0 +1,41 @@ +/* + * Copyright 2016, Anton Blanchard, Michael Ellerman, IBM Corp. + * Licensed under GPLv2. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <sys/mman.h> +#include <time.h> + +#include "utils.h" + +#define ITERATIONS 5000000 + +#define MEMSIZE (128 * 1024 * 1024) + +int test_mmap(void) +{ + struct timespec ts_start, ts_end; + unsigned long i = ITERATIONS; + + clock_gettime(CLOCK_MONOTONIC, &ts_start); + + while (i--) { + char *c = mmap(NULL, MEMSIZE, PROT_READ|PROT_WRITE, + MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); + FAIL_IF(c == MAP_FAILED); + munmap(c, MEMSIZE); + } + + clock_gettime(CLOCK_MONOTONIC, &ts_end); + + printf("time = %.6f\n", ts_end.tv_sec - ts_start.tv_sec + (ts_end.tv_nsec - ts_start.tv_nsec) / 1e9); + + return 0; +} + +int main(void) +{ + return test_harness(test_mmap, "mmap_bench"); +} |