diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-04 14:40:09 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-04 15:39:34 +0100 |
| commit | a4e7ccdac38ec8335d9e4e2656c1a041c77feae1 (patch) | |
| tree | 1193136bd117e31907d0375b84c6e7a1f8356704 /drivers/gpu/drm/i915/gt/intel_context.c | |
| parent | 2935ed5339c495066d901b97de384d86c55a3f6d (diff) | |
drm/i915: Move context management under GEM
Keep track of the GEM contexts underneath i915->gem.contexts and assign
them their own lock for the purposes of list management.
v2: Focus on lock tracking; ctx->vm is protected by ctx->mutex
v3: Correct split with removal of logical HW ID
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004134015.13204-15-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_context.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_context.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index 35a40c2820a2..be34d97ac18f 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -221,12 +221,20 @@ intel_context_init(struct intel_context *ce, struct i915_gem_context *ctx, struct intel_engine_cs *engine) { + struct i915_address_space *vm; + GEM_BUG_ON(!engine->cops); kref_init(&ce->ref); ce->gem_context = ctx; - ce->vm = i915_vm_get(ctx->vm ?: &engine->gt->ggtt->vm); + rcu_read_lock(); + vm = rcu_dereference(ctx->vm); + if (vm) + ce->vm = i915_vm_get(vm); + else + ce->vm = i915_vm_get(&engine->gt->ggtt->vm); + rcu_read_unlock(); if (ctx->timeline) ce->timeline = intel_timeline_get(ctx->timeline); |