[PATCH 08/26] drm/i915/perf: Replace global wakeref tracking with engine-pm

[Timo Aaltonen]

From: Chris Wilson <chris at chris-wilson.co.uk>

BugLink: https://bugs.launchpad.net/bugs/1871957

As we now have a specific engine to use OA on, exchange the top-level
runtime-pm wakeref with the engine-pm. This still results in the same
top-level runtime-pm, but with more nuances to keep the engine and its
gt awake.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191011190325.10979-1-chris@chris-wilson.co.uk
(cherry picked from commit a5efcde69b112d276416f8e6e5e9fd8ede13bfc5)
Signed-off-by: Timo Aaltonen <timo.aaltonen at canonical.com>
---
 drivers/gpu/drm/i915/i915_perf.c       | 8 ++++----
 drivers/gpu/drm/i915/i915_perf_types.h | 6 ------
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 8c8e6c6ab4e0..e75e5e9c8c06 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -196,7 +196,7 @@
 #include <linux/uuid.h>
 
 #include "gem/i915_gem_context.h"
-#include "gem/i915_gem_pm.h"
+#include "gt/intel_engine_pm.h"
 #include "gt/intel_engine_user.h"
 #include "gt/intel_lrc_reg.h"
 
@@ -1377,7 +1377,7 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
 	free_oa_buffer(stream);
 
 	intel_uncore_forcewake_put(stream->uncore, FORCEWAKE_ALL);
-	intel_runtime_pm_put(stream->uncore->rpm, stream->wakeref);
+	intel_engine_pm_put(stream->engine);
 
 	if (stream->ctx)
 		oa_put_render_ctx_id(stream);
@@ -2243,7 +2243,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 	 *   In our case we are expecting that taking pm + FORCEWAKE
 	 *   references will effectively disable RC6.
 	 */
-	stream->wakeref = intel_runtime_pm_get(stream->uncore->rpm);
+	intel_engine_pm_get(stream->engine);
 	intel_uncore_forcewake_get(stream->uncore, FORCEWAKE_ALL);
 
 	ret = alloc_oa_buffer(stream);
@@ -2285,7 +2285,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 	put_oa_config(stream->oa_config);
 
 	intel_uncore_forcewake_put(stream->uncore, FORCEWAKE_ALL);
-	intel_runtime_pm_put(stream->uncore->rpm, stream->wakeref);
+	intel_engine_pm_put(stream->engine);
 
 err_config:
 	if (stream->ctx)
diff --git a/drivers/gpu/drm/i915/i915_perf_types.h b/drivers/gpu/drm/i915/i915_perf_types.h
index a91ae2d1a543..eb8d1ebd5095 100644
--- a/drivers/gpu/drm/i915/i915_perf_types.h
+++ b/drivers/gpu/drm/i915/i915_perf_types.h
@@ -134,12 +134,6 @@ struct i915_perf_stream {
 	 */
 	struct intel_uncore *uncore;
 
-	/**
-	 * @wakeref: As we keep the device awake while the perf stream is
-	 * active, we track our runtime pm reference for later release.
-	 */
-	intel_wakeref_t wakeref;
-
 	/**
 	 * @engine: Engine associated with this performance stream.
 	 */
-- 
2.25.1