From: Mika Kuoppala Date: Tue, 30 Apr 2013 10:30:33 +0000 (+0300) Subject: drm/i915: reference count for i915_hw_contexts X-Git-Tag: v3.11-rc1~65^2~131^2~61 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dce3271b1ee05ca01ebdde50d613d7b33ef178a9;p=pandora-kernel.git drm/i915: reference count for i915_hw_contexts Enabling PPGTT and also the need to track which context was guilty of gpu hang (arb robustness enabling) have put pressure for struct i915_hw_context to be more than just a placeholder for hw context state. In order to track object lifetime properly in a multi peer usage, add reference counting for i915_hw_context. v2: track i915_hw_context pointers instead of using ctx_ids (from Chris Wilson) v3 (Ben): Get rid of do_release() and handle refcounting more compactly. (recommended by Chis) v4: kref_* put inside static inlines (Daniel Vetter) remove code duplication on freeing context (Chris Wilson) v5: idr_remove and ctx->file_priv = NULL in destroy ioctl (Chris) This actually will cause a problem if one destroys a context and later refers to the idea of the context (multiple contexts may have the same id, but only 1 will exist in the idr). v6: Strip out the request related stuff. Reworded commit message. Got rid of do_destroy and introduced i915_gem_context_release_handle, suggested by Chris Wilson. v7: idr_remove can't be called inside idr_for_each (Chris Wilson) Signed-off-by: Ben Widawsky (v5) Signed-off-by: Mika Kuoppala (v7) Reviewed-by: Ben Widawsky Reviewed-by: Chris Wilson [danvet: Squash sob lines, the patch ping-ponged between Ben and Mika a bit ...] Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed