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Date: Wed, 15 Dec 2021 12:54:02 +0000
From: carsten.haitzler@...s.arm.com
To: linux-kernel@...r.kernel.org
Cc: coresight@...ts.linaro.org, suzuki.poulose@....com,
mathieu.poirier@...aro.org, mike.leach@...aro.org,
leo.yan@...aro.org
Subject: [PATCH 05/12] perf test: Add coresight test to check all threads get some data logged
From: Carsten Haitzler <carsten.haitzler@....com>
This adds a test and test scripts to check that all threads in the
target binary end up logging some kind of coresight aux data and that
they are not missing.
Signed-off-by: Carsten Haitzler <carsten.haitzler@....com>
---
.../coresight_thread_loop_check_tid_10.sh | 19 ++++
.../coresight_thread_loop_check_tid_2.sh | 19 ++++
.../coresight_thread_loop_check_tid_250.sh | 19 ++++
.../perf/tests/shell/tools/coresight/Makefile | 3 +-
.../tools/coresight/thread_loop/Makefile | 29 +++++++
.../tools/coresight/thread_loop/thread_loop.c | 86 +++++++++++++++++++
6 files changed, 174 insertions(+), 1 deletion(-)
create mode 100755 tools/perf/tests/shell/coresight_thread_loop_check_tid_10.sh
create mode 100755 tools/perf/tests/shell/coresight_thread_loop_check_tid_2.sh
create mode 100755 tools/perf/tests/shell/coresight_thread_loop_check_tid_250.sh
create mode 100644 tools/perf/tests/shell/tools/coresight/thread_loop/Makefile
create mode 100644 tools/perf/tests/shell/tools/coresight/thread_loop/thread_loop.c
diff --git a/tools/perf/tests/shell/coresight_thread_loop_check_tid_10.sh b/tools/perf/tests/shell/coresight_thread_loop_check_tid_10.sh
new file mode 100755
index 000000000000..283ad9facdee
--- /dev/null
+++ b/tools/perf/tests/shell/coresight_thread_loop_check_tid_10.sh
@@ -0,0 +1,19 @@
+#!/bin/sh -e
+# Coresight / Thread Loop 10 Threads - Check TID
+
+# SPDX-License-Identifier: GPL-2.0
+# Carsten Haitzler <carsten.haitzler@....com>, 2021
+
+TEST="thread_loop"
+. $(dirname $0)/lib/coresight.sh
+ARGS="10 2000"
+DATV="check-tid-10th"
+DATA="$DATD/perf-$TEST-$DATV.data"
+STDO="$DATD/perf-$TEST-$DATV.stdout"
+
+SHOW_TID=1 perf record -s $PERFRECOPT -o "$DATA" "$BIN" $ARGS > $STDO
+
+perf_dump_aux_tid_verify "$DATA" "$STDO"
+
+err=$?
+exit $err
diff --git a/tools/perf/tests/shell/coresight_thread_loop_check_tid_2.sh b/tools/perf/tests/shell/coresight_thread_loop_check_tid_2.sh
new file mode 100755
index 000000000000..ce8ba534bba2
--- /dev/null
+++ b/tools/perf/tests/shell/coresight_thread_loop_check_tid_2.sh
@@ -0,0 +1,19 @@
+#!/bin/sh -e
+# Coresight / Thread Loop 2 Threads - Check TID
+
+# SPDX-License-Identifier: GPL-2.0
+# Carsten Haitzler <carsten.haitzler@....com>, 2021
+
+TEST="thread_loop"
+. $(dirname $0)/lib/coresight.sh
+ARGS="2 4000"
+DATV="check-tid-2th"
+DATA="$DATD/perf-$TEST-$DATV.data"
+STDO="$DATD/perf-$TEST-$DATV.stdout"
+
+SHOW_TID=1 perf record -s $PERFRECOPT -o "$DATA" "$BIN" $ARGS > $STDO
+
+perf_dump_aux_tid_verify "$DATA" "$STDO"
+
+err=$?
+exit $err
diff --git a/tools/perf/tests/shell/coresight_thread_loop_check_tid_250.sh b/tools/perf/tests/shell/coresight_thread_loop_check_tid_250.sh
new file mode 100755
index 000000000000..cb14581c1e68
--- /dev/null
+++ b/tools/perf/tests/shell/coresight_thread_loop_check_tid_250.sh
@@ -0,0 +1,19 @@
+#!/bin/sh -e
+# Coresight / Thread Loop 250 Threads - Check TID
+
+# SPDX-License-Identifier: GPL-2.0
+# Carsten Haitzler <carsten.haitzler@....com>, 2021
+
+TEST="thread_loop"
+. $(dirname $0)/lib/coresight.sh
+ARGS="250 100"
+DATV="check-tid-250th"
+DATA="$DATD/perf-$TEST-$DATV.data"
+STDO="$DATD/perf-$TEST-$DATV.stdout"
+
+SHOW_TID=1 perf record -s $PERFRECOPT -o "$DATA" "$BIN" $ARGS > $STDO
+
+perf_dump_aux_tid_verify "$DATA" "$STDO"
+
+err=$?
+exit $err
diff --git a/tools/perf/tests/shell/tools/coresight/Makefile b/tools/perf/tests/shell/tools/coresight/Makefile
index 723006ea827c..1edab729db76 100644
--- a/tools/perf/tests/shell/tools/coresight/Makefile
+++ b/tools/perf/tests/shell/tools/coresight/Makefile
@@ -5,7 +5,8 @@ include ../../../../../../tools/scripts/Makefile.arch
include ../../../../../../tools/scripts/utilities.mak
SUBDIRS = \
- asm_pure_loop
+ asm_pure_loop \
+ thread_loop
all: $(SUBDIRS)
$(SUBDIRS):
diff --git a/tools/perf/tests/shell/tools/coresight/thread_loop/Makefile b/tools/perf/tests/shell/tools/coresight/thread_loop/Makefile
new file mode 100644
index 000000000000..424df4e8b0e6
--- /dev/null
+++ b/tools/perf/tests/shell/tools/coresight/thread_loop/Makefile
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: GPL-2.0
+# Carsten Haitzler <carsten.haitzler@....com>, 2021
+include ../Makefile.miniconfig
+
+BIN=thread_loop
+LIB=-pthread
+
+all: $(BIN)
+
+$(BIN): $(BIN).c
+ifdef CORESIGHT
+ifeq ($(ARCH),arm64)
+ $(Q)$(CC) $(BIN).c -o $(BIN) $(LIB)
+endif
+endif
+
+install-tests: all
+ifdef CORESIGHT
+ifeq ($(ARCH),arm64)
+ $(call QUIET_INSTALL, tests) \
+ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/tools/$(BIN)'; \
+ $(INSTALL) $(BIN) '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/tools/$(BIN)/$(BIN)'
+endif
+endif
+
+clean:
+ $(Q)$(RM) -f $(BIN)
+
+.PHONY: all clean install-tests
diff --git a/tools/perf/tests/shell/tools/coresight/thread_loop/thread_loop.c b/tools/perf/tests/shell/tools/coresight/thread_loop/thread_loop.c
new file mode 100644
index 000000000000..c0158fac7d0b
--- /dev/null
+++ b/tools/perf/tests/shell/tools/coresight/thread_loop/thread_loop.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+// Carsten Haitzler <carsten.haitzler@....com>, 2021
+
+// define this for gettid()
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <pthread.h>
+#include <sys/syscall.h>
+#ifndef SYS_gettid
+// gettid is 178 on arm64
+# define SYS_gettid 178
+#endif
+#define gettid() syscall(SYS_gettid)
+
+struct args {
+ unsigned int loops;
+ pthread_t th;
+ void *ret;
+};
+
+static void *thrfn(void *arg)
+{
+ struct args *a = arg;
+ int i = 0, len = a->loops;
+
+ if (getenv("SHOW_TID")) {
+ unsigned long long tid = gettid();
+
+ printf("%llu\n", tid);
+ }
+ asm volatile(
+ "loop:\n"
+ "add %[i], %[i], #1\n"
+ "cmp %[i], %[len]\n"
+ "blt loop\n"
+ : /* out */
+ : /* in */ [i] "r" (i), [len] "r" (len)
+ : /* clobber */
+ );
+ return (void *)(long)i;
+}
+
+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, len, thr;
+ pthread_t threads[256];
+ struct args args[256];
+
+ if (argc < 3) {
+ printf("ERR: %s [numthreads] [numloops (millions)]\n", argv[0]);
+ exit(1);
+ }
+
+ thr = atoi(argv[1]);
+ if ((thr < 1) || (thr > 256)) {
+ printf("ERR: threads 1-256\n");
+ exit(1);
+ }
+ len = atoi(argv[2]);
+ if ((len < 1) || (len > 4000)) {
+ printf("ERR: max loops 4000 (millions)\n");
+ exit(1);
+ }
+ len *= 1000000;
+ for (i = 0; i < thr; i++) {
+ args[i].loops = len;
+ 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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