drm/i915: move scheduler slabs to direct module init/exit

With the global kmem_cache shrink infrastructure gone there's nothing
special and we can convert them over.

I'm doing this split up into each patch because there's quite a bit of
noise with removing the static global.slab_dependencies|priorities to just a
slab_dependencies|priorities.

v2: Make slab static (Jason, 0day)

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727121037.2041102-8-daniel.vetter@ffwll.ch

drivers/gpu/drm/i915/i915_globals.c

@@ -8,7 +8,6 @@
 #include <linux/workqueue.h>
 
 #include "i915_globals.h"
-#include "i915_scheduler.h"
 #include "i915_vma.h"
 
 static LIST_HEAD(globals);
@@ -29,7 +28,6 @@ static void __i915_globals_cleanup(void)
 }
 
 static __initconst int (* const initfn[])(void) = {
-	i915_global_scheduler_init,
 	i915_global_vma_init,
 };
 

drivers/gpu/drm/i915/i915_globals.h

@@ -23,8 +23,6 @@ int i915_globals_init(void);
 void i915_globals_exit(void);
 
 /* constructors */
-int i915_global_request_init(void);
-int i915_global_scheduler_init(void);
 int i915_global_vma_init(void);
 
 #endif /* _I915_GLOBALS_H_ */

drivers/gpu/drm/i915/i915_pci.c

@@ -39,6 +39,7 @@
 #include "i915_perf.h"
 #include "i915_globals.h"
 #include "i915_selftest.h"
+#include "i915_scheduler.h"
 
 #define PLATFORM(x) .platform = (x)
 #define GEN(x) \
@@ -1270,6 +1271,7 @@ static const struct {
 	{ i915_gem_context_module_init, i915_gem_context_module_exit },
 	{ i915_objects_module_init, i915_objects_module_exit },
 	{ i915_request_module_init, i915_request_module_exit },
+	{ i915_scheduler_module_init, i915_scheduler_module_exit },
 	{ i915_globals_init, i915_globals_exit },
 	{ i915_mock_selftests, NULL },
 	{ i915_pmu_init, i915_pmu_exit },

drivers/gpu/drm/i915/i915_scheduler.c

@@ -7,15 +7,11 @@
 #include <linux/mutex.h>
 
 #include "i915_drv.h"
-#include "i915_globals.h"
 #include "i915_request.h"
 #include "i915_scheduler.h"
 
-static struct i915_global_scheduler {
-	struct i915_global base;
-	struct kmem_cache *slab_dependencies;
-	struct kmem_cache *slab_priorities;
-} global;
+static struct kmem_cache *slab_dependencies;
+static struct kmem_cache *slab_priorities;
 
 static DEFINE_SPINLOCK(schedule_lock);
 
@@ -93,7 +89,7 @@ find_priolist:
 	if (prio == I915_PRIORITY_NORMAL) {
 		p = &sched_engine->default_priolist;
 	} else {
-		p = kmem_cache_alloc(global.slab_priorities, GFP_ATOMIC);
+		p = kmem_cache_alloc(slab_priorities, GFP_ATOMIC);
 		/* Convert an allocation failure to a priority bump */
 		if (unlikely(!p)) {
 			prio = I915_PRIORITY_NORMAL; /* recurses just once */
@@ -122,7 +118,7 @@ find_priolist:
 
 void __i915_priolist_free(struct i915_priolist *p)
 {
-	kmem_cache_free(global.slab_priorities, p);
+	kmem_cache_free(slab_priorities, p);
 }
 
 struct sched_cache {
@@ -320,13 +316,13 @@ void i915_sched_node_reinit(struct i915_sched_node *node)
 static struct i915_dependency *
 i915_dependency_alloc(void)
 {
-	return kmem_cache_alloc(global.slab_dependencies, GFP_KERNEL);
+	return kmem_cache_alloc(slab_dependencies, GFP_KERNEL);
 }
 
 static void
 i915_dependency_free(struct i915_dependency *dep)
 {
-	kmem_cache_free(global.slab_dependencies, dep);
+	kmem_cache_free(slab_dependencies, dep);
 }
 
 bool __i915_sched_node_add_dependency(struct i915_sched_node *node,
@@ -489,32 +485,27 @@ i915_sched_engine_create(unsigned int subclass)
 	return sched_engine;
 }
 
-static void i915_global_scheduler_exit(void)
+void i915_scheduler_module_exit(void)
 {
-	kmem_cache_destroy(global.slab_dependencies);
-	kmem_cache_destroy(global.slab_priorities);
+	kmem_cache_destroy(slab_dependencies);
+	kmem_cache_destroy(slab_priorities);
 }
 
-static struct i915_global_scheduler global = { {
-	.exit = i915_global_scheduler_exit,
-} };
-
-int __init i915_global_scheduler_init(void)
+int __init i915_scheduler_module_init(void)
 {
-	global.slab_dependencies = KMEM_CACHE(i915_dependency,
+	slab_dependencies = KMEM_CACHE(i915_dependency,
 					      SLAB_HWCACHE_ALIGN |
 					      SLAB_TYPESAFE_BY_RCU);
-	if (!global.slab_dependencies)
+	if (!slab_dependencies)
 		return -ENOMEM;
 
-	global.slab_priorities = KMEM_CACHE(i915_priolist, 0);
-	if (!global.slab_priorities)
+	slab_priorities = KMEM_CACHE(i915_priolist, 0);
+	if (!slab_priorities)
 		goto err_priorities;
 
-	i915_global_register(&global.base);
 	return 0;
 
 err_priorities:
-	kmem_cache_destroy(global.slab_priorities);
+	kmem_cache_destroy(slab_priorities);
 	return -ENOMEM;
 }

drivers/gpu/drm/i915/i915_scheduler.h

@@ -102,4 +102,7 @@ i915_sched_engine_disabled(struct i915_sched_engine *sched_engine)
 	return sched_engine->disabled(sched_engine);
 }
 
+void i915_scheduler_module_exit(void);
+int i915_scheduler_module_init(void);
+
 #endif /* _I915_SCHEDULER_H_ */