From: Tvrtko Ursulin <tvrtko.ursu...@intel.com> A short series to enable fdinfo memory stats for i915.
I added tracking of most classes of objects (user objects, page tables, context state, ring buffers) which contribute to client's memory footprint and am accouting their memory use along the similar lines as in Rob's msm code, just that with i915 specific code we can show a memory region breakdown and so support discrete and multi-tile GPUs properly. And also reflect that our objects can have multiple allowed backing stores. The existing helper Rob added is then used to dump the per memory region stats to fdinfo. The basic objects-per-client infrastructure can later be extended to cover all objects and so avoid needing to walk the IDR under the client's file table lock, which would further avoid distburbing the running clients by parallel fdinfo readers. Example fdinfo format: # cat /proc/1383/fdinfo/8 pos: 0 flags: 02100002 mnt_id: 21 ino: 397 drm-driver: i915 drm-client-id: 18 drm-pdev: 0000:00:02.0 drm-total-system: 125 MiB drm-shared-system: 16 MiB drm-active-system: 110 MiB drm-resident-system: 125 MiB drm-purgeable-system: 2 MiB drm-total-stolen-system: 0 drm-shared-stolen-system: 0 drm-active-stolen-system: 0 drm-resident-stolen-system: 0 drm-purgeable-stolen-system: 0 drm-engine-render: 25662044495 ns drm-engine-copy: 0 ns drm-engine-video: 0 ns drm-engine-video-enhance: 0 ns Example gputop output: DRM minor 0 PID SMEM SMEMRSS render copy video NAME 1233 124M 124M |████████|| || || | neverball 1130 59M 59M |█▌ || || || | Xorg 1207 12M 12M | || || || | xfwm4 Or with Wayland: DRM minor 0 PID MEM RSS render copy video video-enhance NAME 2093 191M 191M |▊ || || || | gnome-shell DRM minor 128 PID MEM RSS render copy video video-enhance NAME 2551 71M 71M |██▉ || || || | neverball 2553 50M 50M | || || || | Xwayland v2: * Now actually per client. v3: * Track imported dma-buf objects. v4: * Rely on DRM GEM handles for tracking user objects. * Fix internal object accounting (no placements). v5: * Fixed brain fart of overwriting the loop cursor. * Fixed object destruction racing with fdinfo reads. * Take reference to GEM context while using it. v6: * Rebase, cover letter update. Tvrtko Ursulin (5): drm/i915: Add ability for tracking buffer objects per client drm/i915: Record which client owns a VM drm/i915: Track page table backing store usage drm/i915: Account ring buffer and context state storage drm/i915: Implement fdinfo memory stats printing drivers/gpu/drm/i915/gem/i915_gem_context.c | 11 +- .../gpu/drm/i915/gem/i915_gem_context_types.h | 3 + drivers/gpu/drm/i915/gem/i915_gem_object.c | 13 +- .../gpu/drm/i915/gem/i915_gem_object_types.h | 12 ++ .../gpu/drm/i915/gem/selftests/mock_context.c | 4 +- drivers/gpu/drm/i915/gt/intel_context.c | 14 ++ drivers/gpu/drm/i915/gt/intel_gtt.c | 6 + drivers/gpu/drm/i915/gt/intel_gtt.h | 1 + drivers/gpu/drm/i915/i915_drm_client.c | 131 ++++++++++++++++++ drivers/gpu/drm/i915/i915_drm_client.h | 41 ++++++ 10 files changed, 228 insertions(+), 8 deletions(-) -- 2.39.2
