drm/i915: move gem_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_luts to just a
slab_luts.

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/20210727121037.2041102-5-daniel.vetter@ffwll.ch

drivers/gpu/drm/i915/gem/i915_gem_context.c

@@ -78,25 +78,21 @@
 #include "gt/intel_ring.h"
 
 #include "i915_gem_context.h"
-#include "i915_globals.h"
 #include "i915_trace.h"
 #include "i915_user_extensions.h"
 
 #define ALL_L3_SLICES(dev) (1 << NUM_L3_SLICES(dev)) - 1
 
-static struct i915_global_gem_context {
-	struct i915_global base;
-	struct kmem_cache *slab_luts;
-} global;
+static struct kmem_cache *slab_luts;
 
 struct i915_lut_handle *i915_lut_handle_alloc(void)
 {
-	return kmem_cache_alloc(global.slab_luts, GFP_KERNEL);
+	return kmem_cache_alloc(slab_luts, GFP_KERNEL);
 }
 
 void i915_lut_handle_free(struct i915_lut_handle *lut)
 {
-	return kmem_cache_free(global.slab_luts, lut);
+	return kmem_cache_free(slab_luts, lut);
 }
 
 static void lut_close(struct i915_gem_context *ctx)
@@ -2283,21 +2279,16 @@ i915_gem_engines_iter_next(struct i915_gem_engines_iter *it)
 #include "selftests/i915_gem_context.c"
 #endif
 
-static void i915_global_gem_context_exit(void)
+void i915_gem_context_module_exit(void)
 {
-	kmem_cache_destroy(global.slab_luts);
+	kmem_cache_destroy(slab_luts);
 }
 
-static struct i915_global_gem_context global = { {
-	.exit = i915_global_gem_context_exit,
-} };
-
-int __init i915_global_gem_context_init(void)
+int __init i915_gem_context_module_init(void)
 {
-	global.slab_luts = KMEM_CACHE(i915_lut_handle, 0);
-	if (!global.slab_luts)
+	slab_luts = KMEM_CACHE(i915_lut_handle, 0);
+	if (!slab_luts)
 		return -ENOMEM;
 
-	i915_global_register(&global.base);
 	return 0;
 }

drivers/gpu/drm/i915/gem/i915_gem_context.h

@@ -224,6 +224,9 @@ i915_gem_engines_iter_next(struct i915_gem_engines_iter *it);
 	for (i915_gem_engines_iter_init(&(it), (engines)); \
 	     ((ce) = i915_gem_engines_iter_next(&(it)));)
 
+void i915_gem_context_module_exit(void);
+int i915_gem_context_module_init(void);
+
 struct i915_lut_handle *i915_lut_handle_alloc(void);
 void i915_lut_handle_free(struct i915_lut_handle *lut);
 

drivers/gpu/drm/i915/i915_globals.c

@@ -7,7 +7,6 @@
 #include <linux/slab.h>
 #include <linux/workqueue.h>
 
-#include "gem/i915_gem_object.h"
 #include "i915_globals.h"
 #include "i915_request.h"
 #include "i915_scheduler.h"
@@ -31,7 +30,6 @@ static void __i915_globals_cleanup(void)
 }
 
 static __initconst int (* const initfn[])(void) = {
-	i915_global_gem_context_init,
 	i915_global_objects_init,
 	i915_global_request_init,
 	i915_global_scheduler_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_gem_context_init(void);
 int i915_global_objects_init(void);
 int i915_global_request_init(void);
 int i915_global_scheduler_init(void);

drivers/gpu/drm/i915/i915_pci.c

@@ -34,6 +34,7 @@
 #include "i915_buddy.h"
 #include "i915_drv.h"
 #include "gem/i915_gem_context.h"
+#include "gem/i915_gem_object.h"
 #include "i915_perf.h"
 #include "i915_globals.h"
 #include "i915_selftest.h"
@@ -1265,6 +1266,7 @@ static const struct {
 	{ 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_gem_context_module_init, i915_gem_context_module_exit },
 	{ i915_globals_init, i915_globals_exit },
 	{ i915_mock_selftests, NULL },
 	{ i915_pmu_init, i915_pmu_exit },