[igt-dev] [PATCH i-g-t] lib/pm_rpm: Reload the module with full mmio debugging

[Imre Deak]

On Tue, Sep 04, 2018 at 11:20:04AM +0100, Chris Wilson wrote:
> Our unclaimed mmio access debugging is lazy, doing cheap checks
> periodically and only if they fail do a full check around every mmio
> access. When testing for runtime pm, enable the full mmio debugging from
> the initial load.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Imre Deak <imre.deak at intel.com>
> ---
>  tests/pm_rpm.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/pm_rpm.c b/tests/pm_rpm.c
> index e3bb6227a..91aef0889 100644
> --- a/tests/pm_rpm.c
> +++ b/tests/pm_rpm.c
> @@ -2058,7 +2058,7 @@ int main(int argc, char *argv[])
>  	igt_subtest("module-reload") {
>  		igt_debug("Reload w/o display\n");
>  		igt_i915_driver_unload();
> -		igt_assert_eq(igt_i915_driver_load("disable_display=1"), 0);
> +		igt_assert_eq(igt_i915_driver_load("disable_display=1 mmio_debug=2147483647"), 0);
>  
>  		igt_assert(setup_environment());
>  		igt_assert(igt_wait(device_in_pci_d3(), 2000, 100));
> @@ -2066,13 +2066,16 @@ int main(int argc, char *argv[])
>  
>  		igt_debug("Reload as normal\n");
>  		igt_i915_driver_unload();
> -		igt_assert_eq(igt_i915_driver_load(NULL), 0);
> +		igt_assert_eq(igt_i915_driver_load("mmio_debug=2147483647"), 0);

Could've been in hex.

>  
>  		igt_assert(setup_environment());
>  		igt_assert(igt_wait(device_in_pci_d3(), 2000, 100));
>  		if (enable_one_screen_with_type(&ms_data, SCREEN_TYPE_ANY))
>  			drm_resources_equal_subtest();
>  		teardown_environment();
> +
> +		/* Remove our mmio_debugging module */
> +		igt_i915_driver_unload();

What loads it again?

>  	}
>  
>  	igt_exit();
> -- 
> 2.19.0.rc1
>