include/uapi/linux/map_benchmark.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/map_benchmark.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/map_benchmark.h
Extension
.h
Size
1403 bytes
Lines
45
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct map_benchmark {
	__u64 avg_map_100ns; /* average map latency in 100ns */
	__u64 map_stddev; /* standard deviation of map latency */
	__u64 avg_unmap_100ns; /* as above */
	__u64 unmap_stddev;
	__u32 threads; /* how many threads will do map/unmap in parallel */
	__u32 seconds; /* how long the test will last */
	__s32 node; /* which numa node this benchmark will run on */
	__u32 dma_bits; /* DMA addressing capability */
	__u32 dma_dir; /* DMA data direction */
	__u32 dma_trans_ns; /* time for DMA transmission in ns */
	__u32 granule;  /* - SINGLE_MODE: number of pages mapped/unmapped per operation
			 * - SG_MODE: number of scatterlist entries (each maps one page)
			 */
	__u8 map_mode;  /* the mode of dma map */
	__u8 expansion[75]; /* For future use */
};

#endif /* _UAPI_DMA_BENCHMARK_H */

Annotation

Implementation Notes