From: carsten.haitzler@foss.arm.com
To: linux-kernel@vger.kernel.org
Cc: coresight@lists.linaro.org, suzuki.poulose@arm.com,
mathieu.poirier@linaro.org, mike.leach@linaro.org,
leo.yan@linaro.org, linux-perf-users@vger.kernel.org,
acme@kernel.org
Subject: [PATCH 04/14] perf test: Add asm pureloop test tool
Date: Tue, 12 Jul 2022 14:57:40 +0100 [thread overview]
Message-ID: <20220712135750.2212005-5-carsten.haitzler@foss.arm.com> (raw)
In-Reply-To: <20220712135750.2212005-1-carsten.haitzler@foss.arm.com>
From: "Carsten Haitzler (Rasterman)" <raster@rasterman.com>
Add test tool to be driven by further test scripts. This tool is pure
arm64 ASM with no libc usage to ensure it is the same exact
binary/code every time so it can also be re-used for many uses. It
just loops for a given fixed number of loops.
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
---
tools/perf/tests/shell/coresight/Makefile | 3 +-
.../shell/coresight/asm_pure_loop/.gitignore | 1 +
.../shell/coresight/asm_pure_loop/Makefile | 34 +++++++++++++++++++
.../coresight/asm_pure_loop/asm_pure_loop.S | 28 +++++++++++++++
4 files changed, 65 insertions(+), 1 deletion(-)
create mode 100644 tools/perf/tests/shell/coresight/asm_pure_loop/.gitignore
create mode 100644 tools/perf/tests/shell/coresight/asm_pure_loop/Makefile
create mode 100644 tools/perf/tests/shell/coresight/asm_pure_loop/asm_pure_loop.S
diff --git a/tools/perf/tests/shell/coresight/Makefile b/tools/perf/tests/shell/coresight/Makefile
index 3b816bb4ced3..d4f868d55773 100644
--- a/tools/perf/tests/shell/coresight/Makefile
+++ b/tools/perf/tests/shell/coresight/Makefile
@@ -4,7 +4,8 @@ include ../../../../../tools/scripts/Makefile.include
include ../../../../../tools/scripts/Makefile.arch
include ../../../../../tools/scripts/utilities.mak
-SUBDIRS =
+SUBDIRS = \
+ asm_pure_loop
all: $(SUBDIRS)
$(SUBDIRS):
diff --git a/tools/perf/tests/shell/coresight/asm_pure_loop/.gitignore b/tools/perf/tests/shell/coresight/asm_pure_loop/.gitignore
new file mode 100644
index 000000000000..468673ac32e8
--- /dev/null
+++ b/tools/perf/tests/shell/coresight/asm_pure_loop/.gitignore
@@ -0,0 +1 @@
+asm_pure_loop
diff --git a/tools/perf/tests/shell/coresight/asm_pure_loop/Makefile b/tools/perf/tests/shell/coresight/asm_pure_loop/Makefile
new file mode 100644
index 000000000000..206849e92bc9
--- /dev/null
+++ b/tools/perf/tests/shell/coresight/asm_pure_loop/Makefile
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: GPL-2.0
+# Carsten Haitzler <carsten.haitzler@arm.com>, 2021
+
+include ../Makefile.miniconfig
+
+# Binary to produce
+BIN=asm_pure_loop
+# Any linking/libraries needed for the binary - empty if none needed
+LIB=
+
+all: $(BIN)
+
+$(BIN): $(BIN).S
+ifdef CORESIGHT
+ifeq ($(ARCH),arm64)
+# Build line - this is raw asm with no libc to have an always exact binary
+ $(Q)$(CC) $(BIN).S -nostdlib -static -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/asm_pure_loop/asm_pure_loop.S b/tools/perf/tests/shell/coresight/asm_pure_loop/asm_pure_loop.S
new file mode 100644
index 000000000000..75cf084a927d
--- /dev/null
+++ b/tools/perf/tests/shell/coresight/asm_pure_loop/asm_pure_loop.S
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Tamas Zsoldos <tamas.zsoldos@arm.com>, 2021 */
+
+.globl _start
+_start:
+ mov x0, 0x0000ffff
+ mov x1, xzr
+loop:
+ nop
+ nop
+ cbnz x1, noskip
+ nop
+ nop
+ adrp x2, skip
+ add x2, x2, :lo12:skip
+ br x2
+ nop
+ nop
+noskip:
+ nop
+ nop
+skip:
+ sub x0, x0, 1
+ cbnz x0, loop
+
+ mov x0, #0
+ mov x8, #93 // __NR_exit syscall
+ svc #0
--
2.32.0
next prev parent reply other threads:[~2022-07-12 13:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-12 13:57 A patch series improving data quality of perf test for CoreSight carsten.haitzler
2022-07-12 13:57 ` [PATCH 01/14] perf test: Refactor shell tests allowing subdirs carsten.haitzler
2022-07-13 6:53 ` Leo Yan
2022-07-13 6:58 ` Leo Yan
2022-07-12 13:57 ` [PATCH 02/14] perf test: Add CoreSight shell lib shared code for future tests carsten.haitzler
2022-07-13 7:23 ` Leo Yan
2022-07-13 12:49 ` Mike Leach
2022-07-12 13:57 ` [PATCH 03/14] perf test: Add build infra for perf test tools for CoreSight tests carsten.haitzler
2022-07-12 13:57 ` carsten.haitzler [this message]
2022-07-12 13:57 ` [PATCH 05/14] perf test: Add asm pureloop test shell script carsten.haitzler
2022-07-12 13:57 ` [PATCH 06/14] perf test: Add git ignore for perf data generated by the CoreSight tests carsten.haitzler
2022-07-12 13:57 ` [PATCH 07/14] perf test: Add memcpy thread test tool carsten.haitzler
2022-07-12 13:57 ` [PATCH 08/14] perf test: Add memcpy thread test shell script carsten.haitzler
2022-07-12 13:57 ` [PATCH 09/14] perf test: Add thread loop test tool carsten.haitzler
2022-07-12 13:57 ` [PATCH 10/14] perf test: Add thread loop test shell scripts carsten.haitzler
2022-07-12 13:57 ` [PATCH 11/14] perf test: Add unroll thread test tool carsten.haitzler
2022-07-12 13:57 ` [PATCH 12/14] perf test: Add unroll thread test shell script carsten.haitzler
2022-07-12 13:57 ` [PATCH 13/14] perf test: Add git ignore for tmp and output files of CoreSight tests carsten.haitzler
2022-07-12 13:57 ` [PATCH 14/14] perf test: Add relevant documentation about CoreSight testing carsten.haitzler
2022-07-13 5:23 ` A patch series improving data quality of perf test for CoreSight Leo Yan
2022-07-13 8:14 ` Suzuki K Poulose
2022-07-19 9:07 ` James Clark
-- strict thread matches above, loose matches on Subject: below --
2022-07-01 12:07 Patch series to add to and imporve tests " carsten.haitzler
2022-07-01 12:07 ` [PATCH 04/14] perf test: Add asm pureloop test tool carsten.haitzler
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