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drm/i915: Use i915_global_register()

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Rather than manually add every new global into each hook, use
i915_global_register() function and keep a list of registered globals to
invoke instead.

However, I haven't found a way for random drivers to add an .init table
to avoid having to manually add ourselves to i915_globals_init() each
time.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190305213830.18094-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
This commit is contained in:
Chris Wilson
2019-03-05 21:38:30 +00:00
parent d846325ad0
commit 103b76eeff
14 changed files with 174 additions and 137 deletions
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88
drivers/gpu/drm/i915/i915_globals.c
View File

@@ -15,62 +15,61 @@
#include "i915_scheduler.h"
#include "i915_vma.h"
static LIST_HEAD(globals);
void __init i915_global_register(struct i915_global *global)
{
GEM_BUG_ON(!global->shrink);
GEM_BUG_ON(!global->exit);
list_add_tail(&global->link, &globals);
}
static void __i915_globals_cleanup(void)
{
struct i915_global *global, *next;
list_for_each_entry_safe_reverse(global, next, &globals, link)
global->exit();
}
static __initconst int (* const initfn[])(void) = {
i915_global_active_init,
i915_global_context_init,
i915_global_objects_init,
i915_global_request_init,
i915_global_scheduler_init,
i915_global_vma_init,
};
int __init i915_globals_init(void)
{
int err;
int i;
err = i915_global_active_init();
if (err)
return err;
for (i = 0; i < ARRAY_SIZE(initfn); i++) {
int err;
err = i915_global_context_init();
if (err)
goto err_active;
err = i915_global_objects_init();
if (err)
goto err_context;
err = i915_global_request_init();
if (err)
goto err_objects;
err = i915_global_scheduler_init();
if (err)
goto err_request;
err = i915_global_vma_init();
if (err)
goto err_scheduler;
err = initfn[i]();
if (err) {
__i915_globals_cleanup();
return err;
}
}
return 0;
err_scheduler:
i915_global_scheduler_exit();
err_request:
i915_global_request_exit();
err_objects:
i915_global_objects_exit();
err_context:
i915_global_context_exit();
err_active:
i915_global_active_exit();
return err;
}
static void i915_globals_shrink(void)
{
struct i915_global *global;
/*
* kmem_cache_shrink() discards empty slabs and reorders partially
* filled slabs to prioritise allocating from the mostly full slabs,
* with the aim of reducing fragmentation.
*/
i915_global_active_shrink();
i915_global_context_shrink();
i915_global_objects_shrink();
i915_global_request_shrink();
i915_global_scheduler_shrink();
i915_global_vma_shrink();
list_for_each_entry(global, &globals, link)
global->shrink();
}
static atomic_t active;
@@ -128,12 +127,7 @@ void __exit i915_globals_exit(void)
rcu_barrier();
flush_scheduled_work();
i915_global_vma_exit();
i915_global_scheduler_exit();
i915_global_request_exit();
i915_global_objects_exit();
i915_global_context_exit();
i915_global_active_exit();
__i915_globals_cleanup();
/* And ensure that our DESTROY_BY_RCU slabs are truly destroyed */
rcu_barrier();