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
Kernel Hackers Manual 4.8.                 January 2017                   STRUCT SPI_STATISTIC(9)