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

From: Chris Wilson <chris@chris-wilson.co.uk>
To: igt-dev@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Subject: [igt-dev] [PATCH i-g-t] lib/pm_rpm: Reload the module with full mmio debugging
Date: Fri, 17 Aug 2018 11:58:29 +0100	[thread overview]
Message-ID: <20180817105829.7924-1-chris@chris-wilson.co.uk> (raw)

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@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@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 bbe36e59e..249530691 100644
--- a/tests/pm_rpm.c
+++ b/tests/pm_rpm.c
@@ -2042,7 +2042,7 @@ 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));
@@ -2050,13 +2050,16 @@ 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);
 
 		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();
 	}
 
 	igt_exit();
-- 
2.18.0

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