From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
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
Example intel_gpu_top output, aggregated mode:
intel-gpu-top: Intel Dg1 (Gen12) @ /dev/dri/card1 - 21/ 577 MHz; 71% RC6
8 irqs/s
ENGINES BUSY MI_SEMA MI_WAIT
Render/3D 2.80% |▉ | 0% 0%
Blitter 0.01% |▏ | 0% 0%
Video 0.00% | | 0% 0%
VideoEnhance 0.00% | | 0% 0%
PID MEM RSS Render/3D Blitter Video NAME
50783 109M 107M |▎ || || || | neverball
Region breakdown mode (needs more width for best experience):
intel-gpu-top: Intel Dg1 (Gen12) @ /dev/dri/card1 - 18/ 555 MHz; 65% RC6
8 irqs/s
ENGINES BUSY MI_SEMA MI_WAIT
Render/3D 2.52% |▉ | 0% 0%
Blitter 0.00% | | 0% 0%
Video 0.00% | | 0% 0%
VideoEnhance 0.00% | | 0% 0%
PID RAM RSS VRAM VRSS Video NAME
50783 34M 32M 75M 75M |▏ || || || | neverball
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.
v7:
* New patch in series for making region names consistent and stable.
Test-with: 20230922134437.234888-1-tvrtko.ursulin@xxxxxxxxxxxxxxx
Tvrtko Ursulin (6):
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: Add stable memory region names
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 | 110 ++++++++++++++++++
drivers/gpu/drm/i915/i915_drm_client.h | 41 +++++++
drivers/gpu/drm/i915/intel_memory_region.c | 19 +++
drivers/gpu/drm/i915/intel_memory_region.h | 1 +
12 files changed, 227 insertions(+), 8 deletions(-)
--
2.39.2
