drivers/infiniband/hw/ionic/ionic_hw_stats.c

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/hw/ionic/ionic_hw_stats.c

Extension

.c

Size

11772 bytes

Lines

481

Domain

Driver Families

Bucket

drivers/infiniband

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/dma-mapping.h
• ionic_fw.h
• ionic_ibdev.h

Detected Declarations

• function ionic_v1_stat_normalize
• function ionic_fill_stats_desc
• function ionic_v1_stat_val
• function ionic_hw_stats_cmd
• function ionic_init_hw_stats
• function ionic_get_hw_stats
• function ionic_counter_alloc_stats
• function ionic_counter_dealloc
• function ionic_counter_bind_qp
• function ionic_counter_unbind_qp
• function ionic_get_qp_stats
• function list_for_each_entry
• function ionic_counter_update_stats
• function ionic_alloc_counters
• function ionic_stats_init
• function ionic_stats_cleanup

Annotated Snippet

if (rc) {
			ibdev_dbg(&dev->ibdev, "Failed to init counter stats\n");
			kfree(dev->counter_stats);
			dev->counter_stats = NULL;
			return;
		}

		xa_init_flags(&dev->counter_stats->xa_counters, XA_FLAGS_ALLOC);

		ib_set_device_ops(&dev->ibdev, &ionic_counter_stats_ops);
	}
}

void ionic_stats_cleanup(struct ionic_ibdev *dev)
{
	if (dev->counter_stats) {
		xa_destroy(&dev->counter_stats->xa_counters);
		kfree(dev->counter_stats->hdr);
		kfree(dev->counter_stats->stats_hdrs);
		kfree(dev->counter_stats);
		dev->counter_stats = NULL;
	}

	kfree(dev->hw_stats);
	kfree(dev->hw_stats_buf);
	kfree(dev->hw_stats_hdrs);
}

Annotation

• Immediate include surface: `linux/dma-mapping.h`, `ionic_fw.h`, `ionic_ibdev.h`.
• Detected declarations: `function ionic_v1_stat_normalize`, `function ionic_fill_stats_desc`, `function ionic_v1_stat_val`, `function ionic_hw_stats_cmd`, `function ionic_init_hw_stats`, `function ionic_get_hw_stats`, `function ionic_counter_alloc_stats`, `function ionic_counter_dealloc`, `function ionic_counter_bind_qp`, `function ionic_counter_unbind_qp`.
• Atlas domain: Driver Families / drivers/infiniband.
• Implementation status: source implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.