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

[Petri Latvala <petri.latvala@intel.com>]

On 10/20/2016 10:36 PM, Marius Vlad wrote:
> Signed-off-by: Marius Vlad <marius.c.vlad@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.


> -
> -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.


-- 
Petri Latvala


> +	free(prg);
> +
> +	igt_exit();
> +}

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