drivers/net/ethernet/mellanox/mlx5/core/pci_irq.h

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/mellanox/mlx5/core/pci_irq.h

Extension

.h

Size

1298 bytes

Lines

45

Domain

Driver Families

Bucket

drivers/net

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/mlx5/driver.h

Detected Declarations

• struct mlx5_irq
• struct cpu_rmap
• struct mlx5_irq_pool
• function mlx5_irq_pool_is_sf_pool

Annotated Snippet

struct mlx5_irq_pool {
	char name[MLX5_MAX_IRQ_NAME - MLX5_MAX_IRQ_IDX_CHARS];
	struct xa_limit xa_num_irqs;
	struct mutex lock; /* sync IRQs creations */
	struct xarray irqs;
	u32 max_threshold;
	u32 min_threshold;
	u16 *irqs_per_cpu;
	struct mlx5_core_dev *dev;
};

static inline bool mlx5_irq_pool_is_sf_pool(struct mlx5_irq_pool *pool)
{
	return !strncmp("mlx5_sf", pool->name, strlen("mlx5_sf"));
}

struct mlx5_irq *mlx5_irq_alloc(struct mlx5_irq_pool *pool, int i,
				struct irq_affinity_desc *af_desc,
				struct cpu_rmap **rmap);
int mlx5_irq_get_locked(struct mlx5_irq *irq);
int mlx5_irq_read_locked(struct mlx5_irq *irq);
int mlx5_irq_put(struct mlx5_irq *irq);
struct mlx5_irq_pool *mlx5_irq_get_pool(struct mlx5_irq *irq);

#endif /* __PCI_IRQ_H__ */

Annotation

• Immediate include surface: `linux/mlx5/driver.h`.
• Detected declarations: `struct mlx5_irq`, `struct cpu_rmap`, `struct mlx5_irq_pool`, `function mlx5_irq_pool_is_sf_pool`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source implementation candidate.

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.