drivers/staging/media/atomisp/pci/sh_css_metrics.h

File Facts

System

Linux kernel

Corpus path

drivers/staging/media/atomisp/pci/sh_css_metrics.h

Extension

.h

Size

1141 bytes

Lines

48

Domain

Driver Families

Bucket

drivers/staging

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

• type_support.h
• ia_css_types.h

Detected Declarations

• struct sh_css_pc_histogram
• struct sh_css_binary_metrics
• struct ia_css_frame_metrics
• struct sh_css_metrics

Annotated Snippet

struct sh_css_pc_histogram {
	unsigned int length;
	unsigned int *run;
	unsigned int *stall;
	unsigned int *msink;
};

struct sh_css_binary_metrics {
	unsigned int mode;
	unsigned int id;
	struct sh_css_pc_histogram isp_histogram;
	struct sh_css_pc_histogram sp_histogram;
	struct sh_css_binary_metrics *next;
};

struct ia_css_frame_metrics {
	unsigned int num_frames;
};

struct sh_css_metrics {
	struct sh_css_binary_metrics *binary_metrics;
	struct ia_css_frame_metrics   frame_metrics;
};

extern struct sh_css_metrics sh_css_metrics;

/* includes ia_css_binary.h, which depends on sh_css_metrics.h */
#include "ia_css_types.h"

/* Sample ISP and SP pc and add to histogram */
void sh_css_metrics_enable_pc_histogram(bool enable);
void sh_css_metrics_start_frame(void);
void sh_css_metrics_start_binary(struct sh_css_binary_metrics *metrics);
void sh_css_metrics_sample_pcs(void);

#endif /* _SH_CSS_METRICS_H_ */

Annotation

• Immediate include surface: `type_support.h`, `ia_css_types.h`.
• Detected declarations: `struct sh_css_pc_histogram`, `struct sh_css_binary_metrics`, `struct ia_css_frame_metrics`, `struct sh_css_metrics`.
• Atlas domain: Driver Families / drivers/staging.
• 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.