[PATCH] drm/i915: Drop stealing of bits from i915_sw_fence function pointer
Matthew Brost
matthew.brost at intel.com
Wed Sep 22 14:57:39 UTC 2021
Rather than stealing bits from i915_sw_fence function pointer use
seperate fields for function pointer and flags. If using two different
fields, the 4 byte alignment for the i915_sw_fence function pointer can
also be dropped.
v2:
(CI)
- Set new function field rather than flags in __i915_sw_fence_init
Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +-
drivers/gpu/drm/i915/i915_request.c | 4 ++--
drivers/gpu/drm/i915/i915_sw_fence.c | 12 +++++------
drivers/gpu/drm/i915/i915_sw_fence.h | 21 +++++++++----------
drivers/gpu/drm/i915/i915_sw_fence_work.c | 2 +-
.../gpu/drm/i915/selftests/i915_sw_fence.c | 2 +-
drivers/gpu/drm/i915/selftests/lib_sw_fence.c | 4 ++--
8 files changed, 23 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index a7ca38613f89..6d5bb55ffc82 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10323,7 +10323,7 @@ static void intel_atomic_commit_work(struct work_struct *work)
intel_atomic_commit_tail(state);
}
-static int __i915_sw_fence_call
+static int
intel_atomic_commit_ready(struct i915_sw_fence *fence,
enum i915_sw_fence_notify notify)
{
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index c2ab0e22db0a..df5fec5c3da8 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -800,7 +800,7 @@ static void free_engines_rcu(struct rcu_head *rcu)
free_engines(engines);
}
-static int __i915_sw_fence_call
+static int
engines_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
struct i915_gem_engines *engines =
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index ce446716d092..945d3025a0b6 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -719,7 +719,7 @@ void i915_request_cancel(struct i915_request *rq, int error)
intel_context_cancel_request(rq->context, rq);
}
-static int __i915_sw_fence_call
+static int
submit_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
struct i915_request *request =
@@ -755,7 +755,7 @@ submit_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
return NOTIFY_DONE;
}
-static int __i915_sw_fence_call
+static int
semaphore_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
struct i915_request *rq = container_of(fence, typeof(*rq), semaphore);
diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c
index c589a681da77..1c080dd1f718 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/i915_sw_fence.c
@@ -34,7 +34,7 @@ enum {
static void *i915_sw_fence_debug_hint(void *addr)
{
- return (void *)(((struct i915_sw_fence *)addr)->flags & I915_SW_FENCE_MASK);
+ return (void *)(((struct i915_sw_fence *)addr)->fn);
}
#ifdef CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS
@@ -126,10 +126,7 @@ static inline void debug_fence_assert(struct i915_sw_fence *fence)
static int __i915_sw_fence_notify(struct i915_sw_fence *fence,
enum i915_sw_fence_notify state)
{
- i915_sw_fence_notify_t fn;
-
- fn = (i915_sw_fence_notify_t)(fence->flags & I915_SW_FENCE_MASK);
- return fn(fence, state);
+ return fence->fn(fence, state);
}
#ifdef CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS
@@ -242,10 +239,11 @@ void __i915_sw_fence_init(struct i915_sw_fence *fence,
const char *name,
struct lock_class_key *key)
{
- BUG_ON(!fn || (unsigned long)fn & ~I915_SW_FENCE_MASK);
+ BUG_ON(!fn);
__init_waitqueue_head(&fence->wait, name, key);
- fence->flags = (unsigned long)fn;
+ fence->fn = fn;
+ fence->flags = 0;
i915_sw_fence_reinit(fence);
}
diff --git a/drivers/gpu/drm/i915/i915_sw_fence.h b/drivers/gpu/drm/i915/i915_sw_fence.h
index 30a863353ee6..70ba1789aa89 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence.h
+++ b/drivers/gpu/drm/i915/i915_sw_fence.h
@@ -17,26 +17,25 @@
struct completion;
struct dma_resv;
+struct i915_sw_fence;
+
+enum i915_sw_fence_notify {
+ FENCE_COMPLETE,
+ FENCE_FREE
+};
+
+typedef int (*i915_sw_fence_notify_t)(struct i915_sw_fence *,
+ enum i915_sw_fence_notify state);
struct i915_sw_fence {
wait_queue_head_t wait;
+ i915_sw_fence_notify_t fn;
unsigned long flags;
atomic_t pending;
int error;
};
#define I915_SW_FENCE_CHECKED_BIT 0 /* used internally for DAG checking */
-#define I915_SW_FENCE_PRIVATE_BIT 1 /* available for use by owner */
-#define I915_SW_FENCE_MASK (~3)
-
-enum i915_sw_fence_notify {
- FENCE_COMPLETE,
- FENCE_FREE
-};
-
-typedef int (*i915_sw_fence_notify_t)(struct i915_sw_fence *,
- enum i915_sw_fence_notify state);
-#define __i915_sw_fence_call __aligned(4)
void __i915_sw_fence_init(struct i915_sw_fence *fence,
i915_sw_fence_notify_t fn,
diff --git a/drivers/gpu/drm/i915/i915_sw_fence_work.c b/drivers/gpu/drm/i915/i915_sw_fence_work.c
index 5b33ef23d54c..d2e56b387993 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence_work.c
+++ b/drivers/gpu/drm/i915/i915_sw_fence_work.c
@@ -23,7 +23,7 @@ static void fence_work(struct work_struct *work)
dma_fence_put(&f->dma);
}
-static int __i915_sw_fence_call
+static int
fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
struct dma_fence_work *f = container_of(fence, typeof(*f), chain);
diff --git a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
index cbf45d85cbff..daa985e5a19b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
@@ -28,7 +28,7 @@
#include "../i915_selftest.h"
-static int __i915_sw_fence_call
+static int
fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
switch (state) {
diff --git a/drivers/gpu/drm/i915/selftests/lib_sw_fence.c b/drivers/gpu/drm/i915/selftests/lib_sw_fence.c
index 080b90b63d16..eb59a41bdb79 100644
--- a/drivers/gpu/drm/i915/selftests/lib_sw_fence.c
+++ b/drivers/gpu/drm/i915/selftests/lib_sw_fence.c
@@ -26,7 +26,7 @@
/* Small library of different fence types useful for writing tests */
-static int __i915_sw_fence_call
+static int
nop_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
return NOTIFY_DONE;
@@ -89,7 +89,7 @@ struct heap_fence {
};
};
-static int __i915_sw_fence_call
+static int
heap_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
struct heap_fence *h = container_of(fence, typeof(*h), fence);
--
2.32.0
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