[PATCH] selftests: arm coresight: sysfsmode testing

[Linu Cherian]

Hi James,

On 2024-12-04 at 16:45:42, James Clark (james.clark at linaro.org) wrote:
> 
> 
> On 29/11/2024 8:38 am, Linu Cherian wrote:
> > Add sysfs mode selftest for ARM Coresight hardware tracer.
> > 
> > Signed-off-by: Linu Cherian <lcherian at marvell.com>
> > ---
> >   .../drivers/hwtracing/coresight/Makefile      |   5 +
> >   .../hwtracing/coresight/sysfs_test_trace.sh   | 144 ++++++++++++++++++
> >   2 files changed, 149 insertions(+)
> >   create mode 100644 tools/testing/selftests/drivers/hwtracing/coresight/Makefile
> 
> Hi Linu,
> 
> You need to add this path into TARGETS for make install to work:
> 
>  TARGETS += drivers/dma-buf
> +TARGETS += drivers/hwtracing/coresight
>  TARGETS += drivers/s390x/uvdevice


Sure will add that.
Thanks.

> 
> 
> >   create mode 100755 tools/testing/selftests/drivers/hwtracing/coresight/sysfs_test_trace.sh
> > 
> > diff --git a/tools/testing/selftests/drivers/hwtracing/coresight/Makefile b/tools/testing/selftests/drivers/hwtracing/coresight/Makefile
> > new file mode 100644
> > index 000000000000..7dc68ae1c0a9
> > --- /dev/null
> > +++ b/tools/testing/selftests/drivers/hwtracing/coresight/Makefile
> > @@ -0,0 +1,5 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +
> > +TEST_PROGS = sysfs_test_trace.sh
> > +
> > +include ../../../lib.mk
> > diff --git a/tools/testing/selftests/drivers/hwtracing/coresight/sysfs_test_trace.sh b/tools/testing/selftests/drivers/hwtracing/coresight/sysfs_test_trace.sh
> > new file mode 100755
> > index 000000000000..0d6307fff1d2
> > --- /dev/null
> > +++ b/tools/testing/selftests/drivers/hwtracing/coresight/sysfs_test_trace.sh
> > @@ -0,0 +1,144 @@
> > +#!/bin/sh
> > +# SPDX-License-Identifier: GPL-2.0
> > +# Copyright (C) 2024 Marvell.
> > +
> > +# Test Arm CoreSight trace capture in sysfs mode
> > +# Based on tools/perf/tests/shell/test_arm_coresight.sh
> > +
> > +glb_err=0
> > +
> > +arm_cs_report() {
> > +	if [ $2 != 0 ]; then
> > +		echo "$1: FAIL"
> > +		glb_err=$2
> > +	else
> > +		echo "$1: PASS"
> > +	fi
> > +}
> > +
> > +is_device_sink() {
> > +	# If the node of "enable_sink" is existed under the device path, this
> > +	# means the device is a sink device.
> > +
> 
> Looks like you still need the skip for TPIU here the same as the Perf test.
> It's an external sink and doesn't have a readable file so the test fails.
> 
> With those changes, looks good. Thanks for adding the first sysfs test.
> Hopefully we can expand them more in the future.
> 
> Reviewed-by: James Clark <james.clark at linaro.org>
> 
>