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Dan Williams 09c8a5b85e ioat: switch watchdog and reset handler from workqueue to timer 
In order to support dynamic resizing of the descriptor ring or polling
for a descriptor in the presence of a hung channel the reset handler
needs to make progress while in a non-preemptible context.  The current
workqueue implementation precludes polling channel reset completion
under spin_lock().

This conversion also allows us to return to opportunistic cleanup in the
ioat2 case as the timer implementation guarantees at least one cleanup
after every descriptor is submitted.  This means the worst case
completion latency becomes the timer frequency (for exceptional
circumstances), but with the benefit of avoiding busy waiting when the
lock is contended.

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
 		2009-09-08 17:30:24 -07:00
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accessibility
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acpi cpumask: alloc zeroed cpumask for static cpumask_var_ts 2009-06-09 22:30:27 +09:30
amba
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ata pata_netcell: Fix typo 2009-06-08 09:12:28 -07:00
atm
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auxdisplay
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base Driver Core: do not oops when driver_unregister() is called for unregistered drivers 2009-05-28 14:24:07 -07:00
block xen/blkfront: fix warning when deleting gendisk on unplug/shutdown 2009-05-19 08:27:42 +02:00
bluetooth
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cdrom cdrom: beyond ARRAY_SIZE of viocd_diskinfo 2009-05-20 08:42:06 +02:00
char char: mxser, fix ISA board lookup 2009-06-09 18:09:03 -07:00
clocksource
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connector
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cpufreq cpumask: alloc zeroed cpumask for static cpumask_var_ts 2009-06-09 22:30:27 +09:30
cpuidle
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crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2009-05-17 15:48:05 -07:00
dca
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dio
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dma ioat: switch watchdog and reset handler from workqueue to timer 2009-09-08 17:30:24 -07:00
edac edac: AMD8111 & AMD8131 Kconfig fixup 2009-05-29 08:40:03 -07:00
eisa
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firewire
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firmware
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gpio
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gpu Revert "drm: don't associate _DRM_DRIVER maps with a master" 2009-06-05 10:21:52 -07:00
hid HID: add NOGET quirk for devices from CH Products 2009-05-11 17:09:21 +02:00
hwmon hwmon: (lm78) Add missing __devexit_p() 2009-06-01 13:46:49 +02:00
i2c Merge branch 'i2c-for-2630-rc5' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-05-12 11:21:51 -07:00
ide pdc202xx_old: fix resetproc() method 2009-06-07 13:52:50 +02:00
idle ioat: switch watchdog and reset handler from workqueue to timer 2009-09-08 17:30:24 -07:00
ieee1394
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infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2009-05-13 16:31:12 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-05-29 08:48:25 -07:00
isdn gigaset: beyond ARRAY_SIZE of iwb->data 2009-05-21 15:04:15 -07:00
leds
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lguest lguest: fix on Intel when KVM loaded (unhandled trap 13) 2009-05-26 12:13:11 -07:00
macintosh
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mca
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md md/raid5: fix bug in reshape code when chunk_size decreases. 2009-06-09 16:32:22 +10:00
media ivtv: Fix PCI DMA direction 2009-06-05 08:05:23 -07:00
memstick
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message
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mfd mfd: pcf50633: fix unsafe disable_irq() 2009-05-19 22:22:28 +02:00
misc [SCSI] ses: fix problems caused by empty SES provided name 2009-05-15 12:20:57 -04:00
mmc sdhci-of: Fix the wrong accessor to HOSTVER register 2009-06-03 21:56:22 +02:00
mtd mtd: davinci nand: update clock naming 2009-06-05 11:54:17 -07:00
net r8169: fix crash when large packets are received 2009-06-09 04:01:02 -07:00
nubus
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of
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oprofile
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parisc
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parport parport: quickfix the proc registration bug 2009-06-02 09:53:22 -07:00
pci PCI: use fixed-up device class when configuring device 2009-06-04 11:29:43 +01:00
pcmcia
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platform eeepc-laptop: unregister_rfkill_notifier on failure 2009-05-14 11:28:27 -04:00
pnp
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power
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ps3
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rapidio
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regulator regulator: da903x: add missing __devexit_p() 2009-05-18 11:21:10 +01:00
rtc [ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void * 2009-05-20 23:26:51 +01:00
s390
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sbus
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scsi [SCSI] mpt2sas: fix driver version inconsistency 2009-05-18 14:17:17 -05:00
serial fix oops when using console=ttymxcN with N > 0 2009-06-03 11:51:05 +02:00
sh
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sn
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spi pxa2xx_spi: prevent panic case setup() fails 2009-05-12 14:11:34 -07:00
ssb SSB: BCM47xx: Export ssb_watchdog_timer_set 2009-06-08 16:57:50 +01:00
staging Staging: comedi: David doesn't want to get comedi patches 2009-05-08 19:39:28 -07:00
tc
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telephony
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thermal thermal: fix off-by-1 error in trip point trigger condition 2009-05-14 13:40:53 -04:00
uio
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usb Revert "USB: Correct Makefile to make isp1760 buildable" 2009-05-28 13:54:43 -07:00
uwb
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video atmel_lcdfb: correct fifo size for some products 2009-05-29 08:40:03 -07:00
virtio
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w1
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watchdog
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xen
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zorro
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Kconfig
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Makefile
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