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perf test coresight: Add unroll thread test tool

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Add test tool to be driven by further test scripts. This is a simple C
based test that is for arm64 with some inline ASM to manually unroll a
lot of code to have a very long sequence of commands.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-11-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Carsten Haitzler 2022-09-09 16:28:00 +01:00 committed by Arnaldo Carvalho de Melo
parent 74c62b8d61
commit fc0a0ea039
4 changed files with 110 additions and 1 deletions
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3
tools/perf/tests/shell/coresight/Makefile
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@ -7,7 +7,8 @@ include ../../../../../tools/scripts/utilities.mak
SUBDIRS = \
asm_pure_loop \
memcpy_thread \
thread_loop
thread_loop \
unroll_loop_thread
all: $(SUBDIRS)
$(SUBDIRS):

1
tools/perf/tests/shell/coresight/unroll_loop_thread/.gitignore vendored Normal file
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@ -0,0 +1 @@
unroll_loop_thread

33
tools/perf/tests/shell/coresight/unroll_loop_thread/Makefile Normal file
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@ -0,0 +1,33 @@
# SPDX-License-Identifier: GPL-2.0
# Carsten Haitzler <carsten.haitzler@arm.com>, 2021
include ../Makefile.miniconfig
# Binary to produce
BIN=unroll_loop_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

74
tools/perf/tests/shell/coresight/unroll_loop_thread/unroll_loop_thread.c Normal file
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@ -0,0 +1,74 @@
// 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 {
pthread_t th;
unsigned int in;
void *ret;
};
static void *thrfn(void *arg)
{
struct args *a = arg;
unsigned int i, in = a->in;
for (i = 0; i < 10000; i++) {
asm volatile (
// force an unroll of thia add instruction so we can test long runs of code
#define SNIP1 "add %[in], %[in], #1\n"
// 10
#define SNIP2 SNIP1 SNIP1 SNIP1 SNIP1 SNIP1 SNIP1 SNIP1 SNIP1 SNIP1 SNIP1
// 100
#define SNIP3 SNIP2 SNIP2 SNIP2 SNIP2 SNIP2 SNIP2 SNIP2 SNIP2 SNIP2 SNIP2
// 1000
#define SNIP4 SNIP3 SNIP3 SNIP3 SNIP3 SNIP3 SNIP3 SNIP3 SNIP3 SNIP3 SNIP3
// 10000
#define SNIP5 SNIP4 SNIP4 SNIP4 SNIP4 SNIP4 SNIP4 SNIP4 SNIP4 SNIP4 SNIP4
// 100000
SNIP5 SNIP5 SNIP5 SNIP5 SNIP5 SNIP5 SNIP5 SNIP5 SNIP5 SNIP5
: /* out */
: /* in */ [in] "r" (in)
: /* clobber */
);
}
}
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 int i, thr;
pthread_t threads[256];
struct args args[256];
if (argc < 2) {
printf("ERR: %s [numthreads]\n", argv[0]);
exit(1);
}
thr = atoi(argv[1]);
if ((thr > 256) || (thr < 1)) {
printf("ERR: threads 1-256\n");
exit(1);
}
for (i = 0; i < thr; i++) {
args[i].in = rand();
args[i].th = new_thr(thrfn, &(args[i]));
}
for (i = 0; i < thr; i++)
pthread_join(args[i].th, &(args[i].ret));
return 0;
}