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STRUCT SPI_STATISTIC(9) Serial Peripheral Interface (S STRUCT SPI_STATISTIC(9)

NAME

struct_spi_statistics - statistics for spi transfers

SYNOPSIS

struct spi_statistics {


  spinlock_t lock;


  unsigned long messages;


  unsigned long transfers;


  unsigned long errors;


  unsigned long timedout;


  unsigned long spi_sync;


  unsigned long spi_sync_immediate;


  unsigned long spi_async;


  unsigned long long bytes;


  unsigned long long bytes_rx;


  unsigned long long bytes_tx;
#define SPI_STATISTICS_HISTO_SIZE 17


  unsigned long transfer_bytes_histo[SPI_STATISTICS_HISTO_SIZE];


  unsigned long transfers_split_maxsize;
};

MEMBERS

lock

lock protecting this structure

messages

number of spi-messages handled

transfers

number of spi_transfers handled

errors

number of errors during spi_transfer

timedout

number of timeouts during spi_transfer

spi_sync

number of times spi_sync is used

spi_sync_immediate

number of times spi_sync is executed immediately in calling context without queuing and scheduling

spi_async

number of times spi_async is used

bytes

number of bytes transferred to/from device

bytes_rx

number of bytes received from device

bytes_tx

number of bytes sent to device

transfer_bytes_histo[SPI_STATISTICS_HISTO_SIZE]

transfer bytes histogramm

transfers_split_maxsize

number of transfers that have been split because of maxsize limit

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.