From a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 5 Aug 2026 07:52:36 -0700 Subject: workqueue: skip the node_nr_active update for non-unbound workqueues apply_wqattrs_commit() updates node_nr_active->max unconditionally. wq->node_nr_active[] is only allocated for unbound workqueues, so guard the call before per-cpu workqueues start using this path. No functional change: only unbound workqueues reach apply_wqattrs_*() today. Signed-off-by: Breno Leitao Signed-off-by: Tejun Heo --- Documentation/ABI/testing/sysfs-driver-ivpu | 65 +++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-driver-ivpu (limited to 'Documentation/ABI/testing/sysfs-driver-ivpu') diff --git a/Documentation/ABI/testing/sysfs-driver-ivpu b/Documentation/ABI/testing/sysfs-driver-ivpu new file mode 100644 index 000000000..91685774e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-ivpu @@ -0,0 +1,65 @@ +What: /sys/bus/pci/drivers/intel_vpu/.../npu_busy_time_us +Date: May 2024 +KernelVersion: 6.11 +Contact: dri-devel@lists.freedesktop.org +Description: Time in microseconds that the device spent executing jobs. The time is + counted when and only when there are jobs submitted to firmware. This time + can be used to measure the utilization of NPU, either by calculating the + difference between two timepoints or monitoring utilization percentage by + reading periodically. Recommended read period is 1 second to avoid impact + on job submission performance. Read-only. + +What: /sys/bus/pci/drivers/intel_vpu/.../npu_memory_utilization +Date: Jan 2025 +KernelVersion: 6.15 +Contact: dri-devel@lists.freedesktop.org +Description: Current NPU memory utilization in bytes. Reports the total size of all + resident buffer objects allocated for NPU use. Read-only. + +What: /sys/bus/pci/drivers/intel_vpu/.../freq/hw_min_freq +Date: April 2026 +KernelVersion: 7.2 +Contact: dri-devel@lists.freedesktop.org +Description: Minimum frequency in MHz supported by the NPU hardware. This is a + hardware capability and cannot be changed. Read-only. + +What: /sys/bus/pci/drivers/intel_vpu/.../freq/hw_efficient_freq +Date: April 2026 +KernelVersion: 7.2 +Contact: dri-devel@lists.freedesktop.org +Description: Most efficient operating frequency in MHz for the NPU. This represents + the frequency at which the NPU operates most efficiently in terms of power + and performance. Read-only. + +What: /sys/bus/pci/drivers/intel_vpu/.../freq/hw_max_freq +Date: April 2026 +KernelVersion: 7.2 +Contact: dri-devel@lists.freedesktop.org +Description: Maximum frequency in MHz supported by the NPU hardware. This is a + hardware capability and cannot be changed. Read-only. + +What: /sys/bus/pci/drivers/intel_vpu/.../freq/current_freq +Date: April 2026 +KernelVersion: 7.2 +Contact: dri-devel@lists.freedesktop.org +Description: Current operating frequency in MHz of the NPU. The value is valid only + when the device is active; returns 0 when idle. The actual frequency may + be lower than the requested range due to power or thermal constraints. + Read-only. + +What: /sys/bus/pci/drivers/intel_vpu/.../freq/set_min_freq +Date: April 2026 +KernelVersion: 7.2 +Contact: dri-devel@lists.freedesktop.org +Description: Configured minimum operating frequency in MHz (50XX devices and newer). + Values written are clamped to hardware limits (hw_min_freq to hw_max_freq). + If set_min_freq exceeds set_max_freq, the driver clamps set_min_freq to + set_max_freq when selecting the operating frequency. Read-write. + +What: /sys/bus/pci/drivers/intel_vpu/.../freq/set_max_freq +Date: April 2026 +KernelVersion: 7.2 +Contact: dri-devel@lists.freedesktop.org +Description: Configured maximum operating frequency in MHz (50XX devices and newer). + Values written are clamped to hardware limits (hw_min_freq to hw_max_freq). + Read-write. -- cgit v1.3.1