From 5e605b64a183a6c0e84cdb99a6f8acb1f8200437 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 5 Aug 2009 09:07:21 +0200 Subject: block: add blk-iopoll, a NAPI like approach for block devices 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 --- block/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block/Makefile') diff --git a/block/Makefile b/block/Makefile index 6c54ed0ff755b..ba74ca6bfa142 100644 --- a/block/Makefile +++ b/block/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_BLOCK) := elevator.o blk-core.o blk-tag.o blk-sysfs.o \ blk-barrier.o blk-settings.o blk-ioc.o blk-map.o \ blk-exec.o blk-merge.o blk-softirq.o blk-timeout.o \ - ioctl.o genhd.o scsi_ioctl.o + blk-iopoll.o ioctl.o genhd.o scsi_ioctl.o obj-$(CONFIG_BLK_DEV_BSG) += bsg.o obj-$(CONFIG_IOSCHED_NOOP) += noop-iosched.o -- cgit v1.2.3