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Clemens Ladisch 13882a82ee firewire: optimize iso queueing by setting wake only after the last packet 
When queueing iso packets, the run time is dominated by the two
MMIO accesses that set the DMA context's wake bit.  Because most
drivers submit packets in batches, we can save much time by
removing all but the last wakeup.

The internal kernel API is changed to require a call to
fw_iso_context_queue_flush() after a batch of queued packets.
The user space API does not change, so one call to
FW_CDEV_IOC_QUEUE_ISO must specify multiple packets to take
advantage of this optimization.

In my measurements, this patch reduces the time needed to queue
fifty skip packets from userspace to one sixth on a 2.5 GHz CPU,
or to one third at 800 MHz.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
 		2011-05-10 22:53:45 +02:00
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acpi ACPI / PM: Avoid infinite recurrence while registering power resources 2011-04-26 11:33:18 +02:00
amba PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS 2011-04-11 22:54:42 +02:00
ata libata: ahci_start_engine compliant to AHCI spec 2011-04-24 11:35:40 -04:00
atm Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
auxdisplay Fix common misspellings 2011-03-31 11:26:23 -03:00
base PM / Wakeup: Fix initialization of wakeup-related device sysfs files 2011-04-26 11:33:09 +02:00
block libceph: fix ceph_osdc_alloc_request error checks 2011-05-03 09:28:13 -07:00
bluetooth Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
cdrom Fix common misspellings 2011-03-31 11:26:23 -03:00
char Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2011-04-21 09:58:42 -07:00
clk CLKDEV: Fix clkdev return value for NULL clk case 2011-04-30 10:14:08 +01:00
clocksource
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connector connector: fix skb double free in cn_rx_skb() 2011-04-12 14:38:57 -07:00
cpufreq Fix common misspellings 2011-03-31 11:26:23 -03:00
cpuidle
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crypto Fix common misspellings 2011-03-31 11:26:23 -03:00
dca drivers/dca/dca-core.c: use list_move() instead of list_del()/list_add() combination 2011-03-22 17:44:12 -07:00
dio
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dma Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
edac amd64_edac: Erratum #637 workaround 2011-04-26 16:18:56 +02:00
eisa
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firewire firewire: optimize iso queueing by setting wake only after the last packet 2011-05-10 22:53:45 +02:00
firmware sigma-firmware: loader for Analog Devices' SigmaStudio 2011-03-22 17:44:15 -07:00
gpio Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
gpu Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6 2011-05-09 16:59:51 -07:00
hid Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
hwmon hwmon: (twl4030-madc-hwmon) Return proper error if hwmon_device_register fails 2011-05-01 09:06:35 -07:00
hwspinlock
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i2c i2c-parport: Fix adapter list handling 2011-05-01 18:18:49 +02:00
ide ide: unexport DISK_EVENT_MEDIA_CHANGE for ide-gd and ide-cd 2011-04-21 19:43:59 +02:00
idle
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ieee802154
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infiniband Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2011-05-02 20:26:32 -07:00
isdn Fix common misspellings 2011-03-31 11:26:23 -03:00
leds leds/leds-regulator.c: fix handling of already enabled regulators 2011-04-14 16:06:54 -07:00
lguest Fix common misspellings 2011-03-31 11:26:23 -03:00
macintosh Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
mca
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md raid5: fix build error, sector_t usage 2011-04-21 10:00:00 -07:00
media firewire: optimize iso queueing by setting wake only after the last packet 2011-05-10 22:53:45 +02:00
memstick Fix common misspellings 2011-03-31 11:26:23 -03:00
message Fix common misspellings 2011-03-31 11:26:23 -03:00
mfd omap:usb: add regulator support for EHCI 2011-05-02 15:29:26 +03:00
misc drivers/misc/sgi-gru/grufile.c: fix the wrong members of gru_chip 2011-04-14 16:06:55 -07:00
mmc mmc: sdhci: Check mrq != NULL in sdhci_tasklet_finish 2011-04-27 19:16:50 -04:00
mtd Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
net Revert: veth: remove unneeded ifname code from veth_newlink() 2011-05-02 15:54:31 -07:00
nfc
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nubus
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of Fix common misspellings 2011-03-31 11:26:23 -03:00
oprofile
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parisc Fix common misspellings 2011-03-31 11:26:23 -03:00
parport parport_pc.c: correctly release the requested region for the IT887x 2011-04-19 16:36:24 -07:00
pci Merge git://git.infradead.org/iommu-2.6 2011-04-21 09:56:35 -07:00
pcmcia Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
platform eeepc-laptop: Use ACPI handle to identify rfkill port 2011-05-09 10:48:47 -04:00
pnp Fix common misspellings 2011-03-31 11:26:23 -03:00
power drivers: Final irq namespace conversion 2011-03-29 14:48:19 +02:00
pps Fix common misspellings 2011-03-31 11:26:23 -03:00
ps3 Fix common misspellings 2011-03-31 11:26:23 -03:00
rapidio RapidIO/mpc85xx: fix possible mport registration problems 2011-04-14 16:06:56 -07:00
regulator Fix common misspellings 2011-03-31 11:26:23 -03:00
rtc rtc: max8925: Call dev_set_drvdata before rtc_device_register 2011-04-28 11:16:21 +02:00
s390 [S390] irqstats: fix counting of pfault, dasd diag and virtio irqs 2011-04-29 10:42:25 +02:00
sbus Fix common misspellings 2011-03-31 11:26:23 -03:00
scsi [SCSI] fix oops in scsi_run_queue() 2011-05-03 15:30:00 -05:00
sfi Fix common misspellings 2011-03-31 11:26:23 -03:00
sh sh: Fix irq cleanup fallout 2011-03-30 00:15:49 +02:00
sn
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spi Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
ssb Fix common misspellings 2011-03-31 11:26:23 -03:00
staging Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 2011-05-04 14:23:41 -07:00
target Fix common misspellings 2011-03-31 11:26:23 -03:00
tc
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telephony Fix common misspellings 2011-03-31 11:26:23 -03:00
thermal
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tty tty/n_gsm: fix bug in CRC calculation for gsm1 mode 2011-04-19 16:38:50 -07:00
uio Fix common misspellings 2011-03-31 11:26:23 -03:00
usb xHCI: Clear PLC in xhci_bus_resume() 2011-05-03 11:14:32 -07:00
uwb Fix common misspellings 2011-03-31 11:26:23 -03:00
vhost
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video ARM: pxafb: Fix access to nonexistent member of pxafb_info 2011-04-12 23:07:42 +08:00
virtio virtio_pci: Prevent double-free of pci regions after device hot-unplug 2011-04-21 22:57:00 +09:30
vlynq vlynq: Convert irq functions 2011-03-28 19:33:04 +02:00
w1 Fix common misspellings 2011-03-31 11:26:23 -03:00
watchdog watchdog: iTCO_wdt: TCO Watchdog patch for Intel Panther Point PCH 2011-04-26 12:50:44 +00:00
xen PM: Add missing syscore_suspend() and syscore_resume() calls 2011-04-20 00:36:11 +02:00
zorro
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Kconfig
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Makefile
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