'\" t
.\"     Title: struct spi_statistics
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Serial Peripheral Interface (SPI)
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "STRUCT SPI_STATISTIC" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Serial Peripheral Interface (S"
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.SH "NAME"
struct_spi_statistics \- statistics for spi transfers
.SH "SYNOPSIS"
.sp
.nf
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;
};  
.fi
.SH "MEMBERS"
.PP
lock
.RS 4
lock protecting this structure
.RE
.PP
messages
.RS 4
number of spi\-messages handled
.RE
.PP
transfers
.RS 4
number of spi_transfers handled
.RE
.PP
errors
.RS 4
number of errors during spi_transfer
.RE
.PP
timedout
.RS 4
number of timeouts during spi_transfer
.RE
.PP
spi_sync
.RS 4
number of times spi_sync is used
.RE
.PP
spi_sync_immediate
.RS 4
number of times spi_sync is executed immediately in calling context without queuing and scheduling
.RE
.PP
spi_async
.RS 4
number of times spi_async is used
.RE
.PP
bytes
.RS 4
number of bytes transferred to/from device
.RE
.PP
bytes_rx
.RS 4
number of bytes received from device
.RE
.PP
bytes_tx
.RS 4
number of bytes sent to device
.RE
.PP
transfer_bytes_histo[SPI_STATISTICS_HISTO_SIZE]
.RS 4
transfer bytes histogramm
.RE
.PP
transfers_split_maxsize
.RS 4
number of transfers that have been split because of maxsize limit
.RE
.SH "COPYRIGHT"
.br