From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 17 May 2018 22:26:33 +0100
Subject: drm/i915: Pull the context->pin_count dec into the common
intel_context_unpin
Git-commit: 867985d4a4319819a971645a262f3340f7d30343
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
As all backends implement the same pin_count mechanism and do a
dec-and-test as their first step, pull that into the common
intel_context_unpin(). This also pulls into the caller, eliminating the
indirect call in the usual steady state case. The intel_context_pin()
side is a little more complicated as it combines the lookup/alloc as
well as pinning the state, and so is left for a later date.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180517212633.24934-4-chris@chris-wilson.co.uk
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/i915/i915_gem_context.h | 4 ++++
drivers/gpu/drm/i915/intel_lrc.c | 13 +------------
drivers/gpu/drm/i915/intel_ringbuffer.c | 6 ------
drivers/gpu/drm/i915/selftests/mock_engine.c | 3 ---
4 files changed, 5 insertions(+), 21 deletions(-)
--- a/drivers/gpu/drm/i915/i915_gem_context.h
+++ b/drivers/gpu/drm/i915/i915_gem_context.h
@@ -285,6 +285,10 @@ static inline void __intel_context_pin(s
static inline void intel_context_unpin(struct intel_context *ce)
{
+ GEM_BUG_ON(!ce->pin_count);
+ if (--ce->pin_count)
+ return;
+
GEM_BUG_ON(!ce->ops);
ce->ops->unpin(ce);
}
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1342,7 +1342,7 @@ static void execlists_context_destroy(st
__i915_gem_object_release_unless_active(ce->state->obj);
}
-static void __execlists_context_unpin(struct intel_context *ce)
+static void execlists_context_unpin(struct intel_context *ce)
{
intel_ring_unpin(ce->ring);
@@ -1353,17 +1353,6 @@ static void __execlists_context_unpin(st
i915_gem_context_put(ce->gem_context);
}
-static void execlists_context_unpin(struct intel_context *ce)
-{
- lockdep_assert_held(&ce->gem_context->i915->drm.struct_mutex);
- GEM_BUG_ON(ce->pin_count == 0);
-
- if (--ce->pin_count)
- return;
-
- __execlists_context_unpin(ce);
-}
-
static int __context_pin(struct i915_gem_context *ctx, struct i915_vma *vma)
{
unsigned int flags;
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1195,12 +1195,6 @@ static void intel_ring_context_destroy(s
static void intel_ring_context_unpin(struct intel_context *ce)
{
- lockdep_assert_held(&ce->gem_context->i915->drm.struct_mutex);
- GEM_BUG_ON(ce->pin_count == 0);
-
- if (--ce->pin_count)
- return;
-
if (ce->state) {
ce->state->obj->pin_global--;
i915_vma_unpin(ce->state);
--- a/drivers/gpu/drm/i915/selftests/mock_engine.c
+++ b/drivers/gpu/drm/i915/selftests/mock_engine.c
@@ -74,9 +74,6 @@ static void hw_delay_complete(struct tim
static void mock_context_unpin(struct intel_context *ce)
{
- if (--ce->pin_count)
- return;
-
i915_gem_context_put(ce->gem_context);
}