drm/i915: move intel_context slab 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_ce to just a
slab_ce.

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/20210727121037.2041102-4-daniel.vetter@ffwll.ch

drivers/gpu/drm/i915/gt/intel_context.c

@@ -7,7 +7,6 @@
 #include "gem/i915_gem_pm.h"
 
 #include "i915_drv.h"
-#include "i915_globals.h"
 #include "i915_trace.h"
 
 #include "intel_context.h"
@@ -15,14 +14,11 @@
 #include "intel_engine_pm.h"
 #include "intel_ring.h"
 
-static struct i915_global_context {
-	struct i915_global base;
-	struct kmem_cache *slab_ce;
-} global;
+static struct kmem_cache *slab_ce;
 
 static struct intel_context *intel_context_alloc(void)
 {
-	return kmem_cache_zalloc(global.slab_ce, GFP_KERNEL);
+	return kmem_cache_zalloc(slab_ce, GFP_KERNEL);
 }
 
 static void rcu_context_free(struct rcu_head *rcu)
@@ -30,7 +26,7 @@ static void rcu_context_free(struct rcu_head *rcu)
 	struct intel_context *ce = container_of(rcu, typeof(*ce), rcu);
 
 	trace_intel_context_free(ce);
-	kmem_cache_free(global.slab_ce, ce);
+	kmem_cache_free(slab_ce, ce);
 }
 
 void intel_context_free(struct intel_context *ce)
@@ -426,22 +422,17 @@ void intel_context_fini(struct intel_context *ce)
 	i915_active_fini(&ce->active);
 }
 
-static void i915_global_context_exit(void)
+void i915_context_module_exit(void)
 {
-	kmem_cache_destroy(global.slab_ce);
+	kmem_cache_destroy(slab_ce);
 }
 
-static struct i915_global_context global = { {
-	.exit = i915_global_context_exit,
-} };
-
-int __init i915_global_context_init(void)
+int __init i915_context_module_init(void)
 {
-	global.slab_ce = KMEM_CACHE(intel_context, SLAB_HWCACHE_ALIGN);
-	if (!global.slab_ce)
+	slab_ce = KMEM_CACHE(intel_context, SLAB_HWCACHE_ALIGN);
+	if (!slab_ce)
 		return -ENOMEM;
 
-	i915_global_register(&global.base);
 	return 0;
 }
 

drivers/gpu/drm/i915/gt/intel_context.h

@@ -31,6 +31,9 @@ void intel_context_init(struct intel_context *ce,
 			struct intel_engine_cs *engine);
 void intel_context_fini(struct intel_context *ce);
 
+void i915_context_module_exit(void);
+int i915_context_module_init(void);
+
 struct intel_context *
 intel_context_create(struct intel_engine_cs *engine);
 

drivers/gpu/drm/i915/i915_globals.c

@@ -7,7 +7,6 @@
 #include <linux/slab.h>
 #include <linux/workqueue.h>
 
-#include "gem/i915_gem_context.h"
 #include "gem/i915_gem_object.h"
 #include "i915_globals.h"
 #include "i915_request.h"
@@ -32,7 +31,6 @@ static void __i915_globals_cleanup(void)
 }
 
 static __initconst int (* const initfn[])(void) = {
-	i915_global_context_init,
 	i915_global_gem_context_init,
 	i915_global_objects_init,
 	i915_global_request_init,

drivers/gpu/drm/i915/i915_globals.h

@@ -23,7 +23,6 @@ int i915_globals_init(void);
 void i915_globals_exit(void);
 
 /* constructors */
-int i915_global_context_init(void);
 int i915_global_gem_context_init(void);
 int i915_global_objects_init(void);
 int i915_global_request_init(void);

drivers/gpu/drm/i915/i915_pci.c

@@ -33,6 +33,7 @@
 #include "i915_active.h"
 #include "i915_buddy.h"
 #include "i915_drv.h"
+#include "gem/i915_gem_context.h"
 #include "i915_perf.h"
 #include "i915_globals.h"
 #include "i915_selftest.h"
@@ -1263,6 +1264,7 @@ static const struct {
 	{ i915_check_nomodeset, NULL },
 	{ i915_active_module_init, i915_active_module_exit },
 	{ i915_buddy_module_init, i915_buddy_module_exit },
+	{ i915_context_module_init, i915_context_module_exit },
 	{ i915_globals_init, i915_globals_exit },
 	{ i915_mock_selftests, NULL },
 	{ i915_pmu_init, i915_pmu_exit },