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    Subject[PATCH v8 06/13] perf test: Add memcpy thread test tool
    Date
    From: Carsten Haitzler <carsten.haitzler@arm.com>

    Add test tool to be driven by further test scripts. This is a simple C
    based memcpy with threads test to drive from scripts.

    Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
    ---
    tools/perf/tests/shell/coresight/Makefile | 3 +-
    .../shell/coresight/memcpy_thread/.gitignore | 1 +
    .../shell/coresight/memcpy_thread/Makefile | 33 ++++++++
    .../coresight/memcpy_thread/memcpy_thread.c | 79 +++++++++++++++++++
    4 files changed, 115 insertions(+), 1 deletion(-)
    create mode 100644 tools/perf/tests/shell/coresight/memcpy_thread/.gitignore
    create mode 100644 tools/perf/tests/shell/coresight/memcpy_thread/Makefile
    create mode 100644 tools/perf/tests/shell/coresight/memcpy_thread/memcpy_thread.c

    diff --git a/tools/perf/tests/shell/coresight/Makefile b/tools/perf/tests/shell/coresight/Makefile
    index d4f868d55773..561c807022ec 100644
    --- a/tools/perf/tests/shell/coresight/Makefile
    +++ b/tools/perf/tests/shell/coresight/Makefile
    @@ -5,7 +5,8 @@ include ../../../../../tools/scripts/Makefile.arch
    include ../../../../../tools/scripts/utilities.mak

    SUBDIRS = \
    - asm_pure_loop
    + asm_pure_loop \
    + memcpy_thread

    all: $(SUBDIRS)
    $(SUBDIRS):
    diff --git a/tools/perf/tests/shell/coresight/memcpy_thread/.gitignore b/tools/perf/tests/shell/coresight/memcpy_thread/.gitignore
    new file mode 100644
    index 000000000000..f8217e56091e
    --- /dev/null
    +++ b/tools/perf/tests/shell/coresight/memcpy_thread/.gitignore
    @@ -0,0 +1 @@
    +memcpy_thread
    diff --git a/tools/perf/tests/shell/coresight/memcpy_thread/Makefile b/tools/perf/tests/shell/coresight/memcpy_thread/Makefile
    new file mode 100644
    index 000000000000..2db637eb2c26
    --- /dev/null
    +++ b/tools/perf/tests/shell/coresight/memcpy_thread/Makefile
    @@ -0,0 +1,33 @@
    +# SPDX-License-Identifier: GPL-2.0
    +# Carsten Haitzler <carsten.haitzler@arm.com>, 2021
    +include ../Makefile.miniconfig
    +
    +# Binary to produce
    +BIN=memcpy_thread
    +# Any linking/libraries needed for the binary - empty if none needed
    +LIB=-pthread
    +
    +all: $(BIN)
    +
    +$(BIN): $(BIN).c
    +ifdef CORESIGHT
    +ifeq ($(ARCH),arm64)
    +# Build line
    + $(Q)$(CC) $(BIN).c -o $(BIN) $(LIB)
    +endif
    +endif
    +
    +install-tests: all
    +ifdef CORESIGHT
    +ifeq ($(ARCH),arm64)
    +# Install the test tool in the right place
    + $(call QUIET_INSTALL, tests) \
    + $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/$(INSTDIR_SUB)/$(BIN)'; \
    + $(INSTALL) $(BIN) '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/$(INSTDIR_SUB)/$(BIN)/$(BIN)'
    +endif
    +endif
    +
    +clean:
    + $(Q)$(RM) -f $(BIN)
    +
    +.PHONY: all clean install-tests
    diff --git a/tools/perf/tests/shell/coresight/memcpy_thread/memcpy_thread.c b/tools/perf/tests/shell/coresight/memcpy_thread/memcpy_thread.c
    new file mode 100644
    index 000000000000..a7e169d1bf64
    --- /dev/null
    +++ b/tools/perf/tests/shell/coresight/memcpy_thread/memcpy_thread.c
    @@ -0,0 +1,79 @@
    +// SPDX-License-Identifier: GPL-2.0
    +// Carsten Haitzler <carsten.haitzler@arm.com>, 2021
    +#include <stdio.h>
    +#include <stdlib.h>
    +#include <unistd.h>
    +#include <string.h>
    +#include <pthread.h>
    +
    +struct args {
    + unsigned long loops;
    + unsigned long size;
    + pthread_t th;
    + void *ret;
    +};
    +
    +static void *thrfn(void *arg)
    +{
    + struct args *a = arg;
    + unsigned long i, len = a->loops;
    + unsigned char *src, *dst;
    +
    + src = malloc(a->size * 1024);
    + dst = malloc(a->size * 1024);
    + if ((!src) || (!dst)) {
    + printf("ERR: Can't allocate memory\n");
    + exit(1);
    + }
    + for (i = 0; i < len; i++)
    + memcpy(dst, src, a->size * 1024);
    +}
    +
    +static pthread_t new_thr(void *(*fn) (void *arg), void *arg)
    +{
    + pthread_t t;
    + pthread_attr_t attr;
    +
    + pthread_attr_init(&attr);
    + pthread_create(&t, &attr, fn, arg);
    + return t;
    +}
    +
    +int main(int argc, char **argv)
    +{
    + unsigned long i, len, size, thr;
    + pthread_t threads[256];
    + struct args args[256];
    + long long v;
    +
    + if (argc < 4) {
    + printf("ERR: %s [copysize Kb] [numthreads] [numloops (hundreds)]\n", argv[0]);
    + exit(1);
    + }
    +
    + v = atoll(argv[1]);
    + if ((v < 1) || (v > (1024 * 1024))) {
    + printf("ERR: max memory 1GB (1048576 KB)\n");
    + exit(1);
    + }
    + size = v;
    + thr = atol(argv[2]);
    + if ((thr < 1) || (thr > 256)) {
    + printf("ERR: threads 1-256\n");
    + exit(1);
    + }
    + v = atoll(argv[3]);
    + if ((v < 1) || (v > 40000000000ll)) {
    + printf("ERR: loops 1-40000000000 (hundreds)\n");
    + exit(1);
    + }
    + len = v * 100;
    + for (i = 0; i < thr; i++) {
    + args[i].loops = len;
    + args[i].size = size;
    + args[i].th = new_thr(thrfn, &(args[i]));
    + }
    + for (i = 0; i < thr; i++)
    + pthread_join(args[i].th, &(args[i].ret));
    + return 0;
    +}
    --
    2.32.0
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