[Intel-gfx] [PATCH i-g-t 2/3] tests/drv_module_reload_basic: Convert sh script to C version.

[Marius Vlad]

On Fri, Oct 21, 2016 at 12:39:22PM +0300, Petri Latvala wrote:
> 
> 
> On 10/20/2016 10:36 PM, Marius Vlad wrote:
> > Signed-off-by: Marius Vlad <marius.c.vlad at intel.com>
> > ---
> >   tests/Makefile.sources          |   2 +-
> >   tests/drv_module_reload_basic   |  97 -----------------------
> >   tests/drv_module_reload_basic.c | 166 ++++++++++++++++++++++++++++++++++++++++
> >   3 files changed, 167 insertions(+), 98 deletions(-)
> >   delete mode 100755 tests/drv_module_reload_basic
> >   create mode 100644 tests/drv_module_reload_basic.c
> > 
> > diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> > index 6d081c3..c35ea11 100644
> > --- a/tests/Makefile.sources
> > +++ b/tests/Makefile.sources
> > @@ -211,6 +211,7 @@ TESTS_progs = \
> >   	kms_pwrite_crc \
> >   	kms_sink_crc_basic \
> >   	prime_udl \
> > +	drv_module_reload_basic \
> >   	$(NULL)
> >   # IMPORTANT: The ZZ_ tests need to be run last!
> > @@ -221,7 +222,6 @@ TESTS_scripts_M = \
> >   TESTS_scripts = \
> >   	debugfs_emon_crash \
> >   	drv_debugfs_reader \
> > -	drv_module_reload_basic \
> >   	kms_sysfs_edid_timing \
> >   	sysfs_l3_parity \
> >   	test_rte_check \
> > diff --git a/tests/drv_module_reload_basic b/tests/drv_module_reload_basic
> > deleted file mode 100755
> > index a8d628d..0000000
> > --- a/tests/drv_module_reload_basic
> > +++ /dev/null
> > @@ -1,97 +0,0 @@
> > -#!/bin/bash
> > -#
> > -# Testcase: Reload the drm module
> > -#
> > -# ... we've broken this way too often :(
> > -#
> > -
> > -SOURCE_DIR="$( dirname "${BASH_SOURCE[0]}" )"
> > -. $SOURCE_DIR/drm_lib.sh
> > -
> > -# no other drm service should be running, so we can just unbind
> > -
> > -# return 0 if module by name $1 is loaded according to lsmod
> > -function mod_loaded()
> > -{
> > -	lsmod | grep -w "^$1" &> /dev/null
> > -}
> > -
> > -function reload() {
> > -	local snd_hda_intel_unloaded
> > -
> > -	echo Reloading i915.ko with $*
> > -
> > -	# we must kick away fbcon (but only fbcon)
> > -	for vtcon in /sys/class/vtconsole/vtcon*/ ; do
> > -		if grep "frame buffer device" $vtcon/name > /dev/null ; then
> > -			echo unbinding $vtcon: `cat $vtcon/name`
> > -			echo 0 > $vtcon/bind
> > -		fi
> > -	done
> > -
> > -	# The sound driver uses our power well
> > -	pkill alsactl
> > -	snd_hda_intel_unloaded=0
> > -	if mod_loaded snd_hda_intel; then
> > -		rmmod snd_hda_intel && snd_hda_intel_unloaded=1
> > -	fi
> > -
> > -	# gen5 only
> > -	if mod_loaded intel_ips; then
> > -		rmmod intel_ips
> > -	fi
> > -	rmmod i915 || return $IGT_EXIT_SKIP
> > -	#ignore errors in intel-gtt, often built-in
> > -	rmmod intel-gtt &> /dev/null
> > -	# drm may be used by other devices (nouveau, radeon, udl, etc)
> > -	rmmod drm_kms_helper &> /dev/null
> > -	rmmod drm &> /dev/null
> > -
> > -	if mod_loaded i915; then
> > -		echo WARNING: i915.ko still loaded!
> > -		return $IGT_EXIT_FAILURE
> > -	else
> > -		echo module successfully unloaded
> > -	fi
> > -
> > -	modprobe i915 $*
> > -
> > -	if [ -f /sys/class/vtconsole/vtcon1/bind ]; then
> > -		echo 1 > /sys/class/vtconsole/vtcon1/bind
> > -	fi
> > -
> > -	modprobe -q snd_hda_intel || return $snd_hda_intel_unloaded
> > -}
> > -
> > -function finish_load() {
> > -	# does the device exist?
> > -	if $SOURCE_DIR/gem_alive > /dev/null ; then
> > -		echo "module successfully loaded again"
> > -	else
> > -		echo "failed to reload module successfully"
> > -		return $IGT_EXIT_FAILURE
> > -	fi
> > -
> > -	# then try to run something
> > -	if ! $SOURCE_DIR/gem_exec_store > /dev/null ; then
> > -		echo "failed to execute a simple batch after reload"
> > -		return $IGT_EXIT_FAILURE
> > -	fi
> > -
> > -	return $IGT_EXIT_SUCCESS
> > -}
> > -
> > -hda_dynamic_debug_enable
> 
> I don't see the equivalent of hda_dynamic_debug_enable in the C version.
Indeed, this got updated prior to me looking at it.
> 
> 
> > -
> > -reload || exit $?
> > -finish_load || exit $?
> > -
> > -# Repeat the module reload trying to to generate faults
> > -for i in $(seq 1 4); do
> > -	reload inject_load_failure=$i
> > -done
> > -
> > -reload || exit $?
> > -finish_load
> > -
> > -exit $?
> > diff --git a/tests/drv_module_reload_basic.c b/tests/drv_module_reload_basic.c
> > new file mode 100644
> > index 0000000..d36afde
> > --- /dev/null
> > +++ b/tests/drv_module_reload_basic.c
> > @@ -0,0 +1,166 @@
> > +/*
> > + * Copyright © 2016 Intel Corporation
> > + *
> > + * Permission is hereby granted, free of charge, to any person obtaining a
> > + * copy of this software and associated documentation files (the "Software"),
> > + * to deal in the Software without restriction, including without limitation
> > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > + * and/or sell copies of the Software, and to permit persons to whom the
> > + * Software is furnished to do so, subject to the following conditions:
> > + *
> > + * The above copyright notice and this permission notice (including the next
> > + * paragraph) shall be included in all copies or substantial portions of the
> > + * Software.
> > + *
> > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> > + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> > + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> > + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> > + * IN THE SOFTWARE.
> > + */
> > +#include "igt.h"
> > +#include "igt_debugfs.h"
> > +#include "igt_aux.h"
> > +#include "igt_sysfs.h"
> > +#include "igt_core.h"
> > +
> > +#include <dirent.h>
> > +#include <sys/utsname.h>
> > +#include <linux/limits.h>
> > +#include <signal.h>
> > +#include <libgen.h>
> > +
> > +#include <libkmod.h>
> > +#include <proc/readproc.h>
> > +
> > +static const char *tests[] = {
> > +	"gem_alive", "gem_exec_store"
> > +};
> > +
> > +static int
> > +reload(const char *opts_i915)
> > +{
> > +	kick_fbcon(0);
> > +
> > +	if (opts_i915)
> > +		igt_info("Reloading i915 with %s\n\n", opts_i915);
> > +
> > +	if (igt_lsmod_has_module("snd_hda_intel")) {
> > +		if (igt_pkill(SIGTERM, "alsactl") == -1) {
> > +			return IGT_EXIT_FAILURE;
> > +		}
> > +		if (igt_rmmod("snd_hda_intel", false) == -1)
> > +			return IGT_EXIT_FAILURE;
> > +	}
> > +
> > +	/* gen5 */
> > +	if (igt_lsmod_has_module("intel_ips")) {
> > +		igt_rmmod("intel_ips", false);
> > +	}
> > +
> > +	if (igt_rmmod("i915", false) == -1) {
> > +		return IGT_EXIT_SKIP;
> > +	}
> > +
> > +	igt_info("i915.ko has been unloaded!\n");
> > +
> > +	if (igt_lsmod_has_module("intel-gtt")) {
> > +		igt_rmmod("intel-gtt", false);
> > +	}
> > +
> > +	igt_rmmod("drm_kms_helper", false);
> > +	igt_rmmod("drm", false);
> > +
> > +	if (igt_lsmod_has_module("i915")) {
> > +		igt_info("WARNING: i915.ko still loaded!\n");
> > +		return IGT_EXIT_FAILURE;
> > +	} else {
> > +		igt_info("module successfully unloaded\n");
> > +	}
> > +
> > +	/* we do not have automatic loading of dependencies */
> > +	igt_insmod("drm", NULL);
> > +	igt_insmod("drm_kms_helper", NULL);
> > +
> > +	if (igt_insmod("i915", opts_i915) == -1) {
> > +		igt_info("Could not load i915\n");
> > +		return IGT_EXIT_FAILURE;
> > +	}
> > +
> > +	kick_fbcon(1);
> > +
> > +	if (igt_insmod("snd_hda_intel", NULL) == -1)
> > +		return IGT_EXIT_FAILURE;
> > +
> > +	return IGT_EXIT_SUCCESS;
> > +}
> > +
> > +static void
> > +igt_execv(char **argv)
> > +{
> > +	igt_fork(child, 1) {
> > +		if (execv(argv[0], argv) < 0) {
> > +			igt_info("Failed to exec %s\n",
> > +					argv[0]);
> > +			exit(IGT_EXIT_FAILURE);
> > +		}
> > +	}
> > +	igt_waitchildren();
> > +}
> > +
> > +static void
> > +finish_load(char *dirname)
> > +{
> > +	char buf[PATH_MAX];
> > +	char *__argv[2] = { buf, NULL };
> > +
> > +	memset(buf, 0, PATH_MAX);
> > +	snprintf(buf, sizeof(buf), "%s/%s", dirname, tests[0]);
> > +
> > +	igt_execv(__argv);
> > +
> > +	memset(buf, 0, sizeof(buf));
> > +	snprintf(buf, sizeof(buf), "%s/%s", dirname, tests[1]);
> > +
> > +	igt_execv(__argv);
> > +}
> > +
> > +int main(int argc, char *argv[])
> > +{
> > +	int i, err;
> > +	char buf[64];
> > +	char *prg, *dir;
> > +
> > +	prg = strdup(argv[0]);
> > +	igt_subtest_init_parse_opts(&argc, argv, "", NULL,
> > +				    NULL, NULL, NULL);
> > +
> > +
> > +	igt_subtest("basic-reload") {
> > +		if ((err = reload(NULL)))
> > +			igt_fail(err);
> > +	}
> > +
> > +	igt_subtest("basic-exec") {
> > +		dir = dirname(prg);
> > +		finish_load(dir);
> > +	}
> > +
> > +	igt_subtest("basic-reload-inject") {
> > +		for (i = 0; i < 4; i++) {
> > +			memset(buf, 0, sizeof(buf));
> > +			snprintf(buf, sizeof(buf), "inject_load_failure=%d", i);
> > +			reload(buf);
> > +		}
> > +	}
> > +
> > +	igt_subtest("basic-reload-final")
> > +		if ((err = reload(NULL)))
> > +			igt_fail(err);
> > +
> 
> An accompanying change to tests/intel-ci/fast-feedback.testlist in the same
> commit required.
Will do.
> 
> 
> -- 
> Petri Latvala
> 
> 
> > +	free(prg);
> > +
> > +	igt_exit();
> > +}
> 
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