By allowing the filter_glob parameter to be written to, it's possible to tweak the testsuites that will be executed on new module loads. This makes it easier to run specific tests without having to reload kunit and provides a way to filter tests on real HW even if kunit is builtin. Example for xe driver:
1) Run just 1 test # echo -n xe_bo > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo
2) Run all tests # echo * > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo xe_dma_buf xe_migrate xe_mocs
References: https://lore.kernel.org/intel-xe/dzacvbdditbneiu3e3fmstjmttcbne44yspumpkd6sj... Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com --- lib/kunit/executor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index 1236b3cd2fbb..30ed9d321c19 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -31,7 +31,7 @@ static char *filter_glob_param; static char *filter_param; static char *filter_action_param;
-module_param_named(filter_glob, filter_glob_param, charp, 0400); +module_param_named(filter_glob, filter_glob_param, charp, 0600); MODULE_PARM_DESC(filter_glob, "Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test"); module_param_named(filter, filter_param, charp, 0400);
On Thu, Jan 11, 2024 at 7:13 PM Lucas De Marchi lucas.demarchi@intel.com wrote:
By allowing the filter_glob parameter to be written to, it's possible to tweak the testsuites that will be executed on new module loads. This makes it easier to run specific tests without having to reload kunit and provides a way to filter tests on real HW even if kunit is builtin. Example for xe driver:
Run just 1 test # echo -n xe_bo > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo
Run all tests # echo * > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo xe_dma_buf xe_migrate xe_mocs
References: https://lore.kernel.org/intel-xe/dzacvbdditbneiu3e3fmstjmttcbne44yspumpkd6sj... Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com
Hello!
I have tested this and this looks good to me. I agree this is very helpful and I wonder if we should do the same with the other module parameters (filter, filter_action).
It did worry me to make filter_glob writable due to the recent patch that requires the output of filtering to be a valid virtual address but I think there is a sufficient amount of checking of filter_glob.
Thanks! -Rae
Reviewed-by: Rae Moar rmoar@google.com
lib/kunit/executor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index 1236b3cd2fbb..30ed9d321c19 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -31,7 +31,7 @@ static char *filter_glob_param; static char *filter_param; static char *filter_action_param;
-module_param_named(filter_glob, filter_glob_param, charp, 0400); +module_param_named(filter_glob, filter_glob_param, charp, 0600); MODULE_PARM_DESC(filter_glob, "Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test"); module_param_named(filter, filter_param, charp, 0400); -- 2.40.1
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On Thu, Jan 18, 2024 at 05:23:33PM -0500, Rae Moar wrote:
On Thu, Jan 11, 2024 at 7:13 PM Lucas De Marchi lucas.demarchi@intel.com wrote:
By allowing the filter_glob parameter to be written to, it's possible to tweak the testsuites that will be executed on new module loads. This makes it easier to run specific tests without having to reload kunit and provides a way to filter tests on real HW even if kunit is builtin. Example for xe driver:
Run just 1 test # echo -n xe_bo > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo
Run all tests # echo * > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo xe_dma_buf xe_migrate xe_mocs
References: https://lore.kernel.org/intel-xe/dzacvbdditbneiu3e3fmstjmttcbne44yspumpkd6sj... Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com
Hello!
I have tested this and this looks good to me. I agree this is very helpful and I wonder if we should do the same with the other module parameters (filter, filter_action).
yeah, after I sent this I was wondering about the other parameters. I don't have a use for them right now, but I can try a few things and spin a new version if people find it useful.
It did worry me to make filter_glob writable due to the recent patch that requires the output of filtering to be a valid virtual address but I think there is a sufficient amount of checking of filter_glob.
Thanks! -Rae
Reviewed-by: Rae Moar rmoar@google.com
thanks Lucas De Marchi
On Friday, 19 January 2024 00:29:33 CET Lucas De Marchi wrote:
On Thu, Jan 18, 2024 at 05:23:33PM -0500, Rae Moar wrote:
On Thu, Jan 11, 2024 at 7:13 PM Lucas De Marchi lucas.demarchi@intel.com wrote:
By allowing the filter_glob parameter to be written to, it's possible to tweak the testsuites that will be executed on new module loads. This makes it easier to run specific tests without having to reload kunit and provides a way to filter tests on real HW even if kunit is builtin. Example for xe driver:
Run just 1 test # echo -n xe_bo > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo
Run all tests # echo * > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo xe_dma_buf xe_migrate xe_mocs
References: https://lore.kernel.org/intel-xe/
dzacvbdditbneiu3e3fmstjmttcbne44yspumpkd6sjn56jqpk@vxu7sksbqrp6/
Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com
Hello!
I have tested this and this looks good to me. I agree this is very helpful and I wonder if we should do the same with the other module parameters (filter, filter_action).
yeah, after I sent this I was wondering about the other parameters. I don't have a use for them right now, but I can try a few things and spin a new version if people find it useful.
Yes, please do. I find it very useful for improving the current implementation of IGT kunit which now depends the ability to unload and reload the kunit base module with specific filter parameters in order to get a KTAP formatted list of test cases without executing them, then to run those test cases filtered one by one.
Thanks, Janusz
It did worry me to make filter_glob writable due to the recent patch that requires the output of filtering to be a valid virtual address but I think there is a sufficient amount of checking of filter_glob.
Thanks! -Rae
Reviewed-by: Rae Moar rmoar@google.com
thanks Lucas De Marchi
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