path: root/block/blk-iopoll.c
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* tree-wide: fix assorted typos all over the placeAndré Goddard Rosa2009-12-041-1/+1
| | | | | | | | | | That is "success", "unknown", "through", "performance", "[re|un]mapping" , "access", "default", "reasonable", "[con]currently", "temperature" , "channel", "[un]used", "application", "example","hierarchy", "therefore" , "[over|under]flow", "contiguous", "threshold", "enough" and others. Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* block: use interrupts disabled version of raise_softirq_irqoff()Jens Axboe2009-09-111-1/+1
| | | | | | | We already have interrupts disabled at that point, so use the __raise_softirq_irqoff() variant. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: fix comment in blk-iopoll.cJens Axboe2009-09-111-3/+6
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: adjust default budget for blk-iopollJens Axboe2009-09-111-1/+3
| | | | | | It's not exported, I doubt we'll have a reason to change this... Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: fix long lines in block/blk-iopoll.cJens Axboe2009-09-111-12/+14
| | | | | | | Note sure why they happened in the first place, probably some bad terminal setting. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: add blk-iopoll, a NAPI like approach for block devicesJens Axboe2009-09-111-0/+220
This borrows some code from NAPI and implements a polled completion mode for block devices. The idea is the same as NAPI - instead of doing the command completion when the irq occurs, schedule a dedicated softirq in the hopes that we will complete more IO when the iopoll handler is invoked. Devices have a budget of commands assigned, and will stay in polled mode as long as they continue to consume their budget from the iopoll softirq handler. If they do not, the device is set back to interrupt completion mode. This patch holds the core bits for blk-iopoll, device driver support sold separately. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>