async_tx.c File Reference

#include <linux/rculist.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/async_tx.h>

Go to the source code of this file.

Enumerations
enum	submit_disposition { ASYNC_TX_SUBMITTED, ASYNC_TX_CHANNEL_SWITCH, ASYNC_TX_DIRECT_SUBMIT }

Functions
void	async_tx_submit (struct dma_chan *chan, struct dma_async_tx_descriptor *tx, struct async_submit_ctl *submit)
	EXPORT_SYMBOL_GPL (async_tx_submit)
struct dma_async_tx_descriptor *	async_trigger_callback (struct async_submit_ctl *submit)
	EXPORT_SYMBOL_GPL (async_trigger_callback)
void	async_tx_quiesce (struct dma_async_tx_descriptor **tx)
	EXPORT_SYMBOL_GPL (async_tx_quiesce)
	MODULE_AUTHOR ("Intel Corporation")
	MODULE_DESCRIPTION ("Asynchronous Bulk Memory Transactions API")
	MODULE_LICENSE ("GPL")

Enumeration Type Documentation

enum submit_disposition

submit_disposition - flags for routing an incoming operation : we were able to append the new operation under the lock : when the lock is dropped schedule a channel switch : when the lock is dropped submit directly

while holding depend_tx->lock we must avoid submitting new operations to prevent a circular locking dependency with drivers that already hold a channel lock when calling async_tx_run_dependencies.

Enumerator:

ASYNC_TX_SUBMITTED
ASYNC_TX_CHANNEL_SWITCH
ASYNC_TX_DIRECT_SUBMIT

Definition at line 149 of file async_tx.c.

Function Documentation

struct dma_async_tx_descriptor* async_trigger_callback ( struct async_submit_ctl *  submit )

read

async_trigger_callback - schedules the callback function to be run : submission and completion parameters

honored flags: ASYNC_TX_ACK

The callback is run after any dependent operations have completed.

Definition at line 234 of file async_tx.c.

void async_tx_quiesce

(

struct dma_async_tx_descriptor **

tx

)

async_tx_quiesce - ensure tx is complete and freeable upon return - transaction to quiesce

Definition at line 276 of file async_tx.c.

void async_tx_submit	(	struct dma_chan *	chan,
		struct dma_async_tx_descriptor *	tx,
		struct async_submit_ctl *	submit
	)

Definition at line 156 of file async_tx.c.

EXPORT_SYMBOL_GPL

(

async_tx_submit

)

EXPORT_SYMBOL_GPL

(

async_trigger_callback

)

EXPORT_SYMBOL_GPL

(

async_tx_quiesce

)

MODULE_AUTHOR

(

"Intel Corporation"

)

MODULE_DESCRIPTION

(

"Asynchronous Bulk Memory Transactions API"

)

MODULE_LICENSE

(

"GPL"

)