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Rusty Russell 48925e372f virtio_net: avoid (most) NETDEV_TX_BUSY by stopping queue early. 
Now we can tell the theoretical capacity remaining in the output
queue, virtio_net can waste entries by stopping the queue early.

It doesn't work in the case of indirect buffers and kmalloc failure,
but that's rare (we could drop the packet in that case, but other
drivers return TX_BUSY for similar reasons).

For the record, I think this patch reflects poorly on the linux
network API.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dinesh Subhraveti <dineshs@us.ibm.com>
 		2009-09-24 09:59:20 +09:30
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accessibility
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acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-09-23 09:32:11 -07:00
amba
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ata trivial: fix comment typo in drivers/ata/pata_hpt37x.c 2009-09-21 15:15:53 +02:00
atm
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auxdisplay
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base mm: oom analysis: add shmem vmstat 2009-09-22 07:17:27 -07:00
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2009-09-23 09:23:45 -07:00
bluetooth
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cdrom const: make block_device_operations const 2009-09-22 07:17:25 -07:00
char Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-09-23 09:32:11 -07:00
clocksource
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connector proc connector: add event for process becoming session leader 2009-09-23 07:39:29 -07:00
cpufreq Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2009-09-18 09:16:57 -07:00
cpuidle cpuidle: menu governor: reduce latency on exit 2009-09-22 07:17:45 -07:00
crypto
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dca
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dio
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dma
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edac trivial: fix typo "for for" in multiple files 2009-09-21 15:14:54 +02:00
eisa
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firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-09-23 09:43:22 -07:00
firmware mm: don't use alloc_bootmem_low() where not strictly needed 2009-09-22 07:17:38 -07:00
gpio Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2009-09-23 09:30:48 -07:00
gpu Merge branch 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-09-23 10:09:18 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2009-09-22 07:51:28 -07:00
hwmon spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
i2c Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2009-09-23 09:30:48 -07:00
ide Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-09-23 09:32:11 -07:00
idle
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ieee1394 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-09-23 09:43:22 -07:00
ieee802154
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infiniband walk system ram range 2009-09-23 07:39:41 -07:00
input Merge git://git.infradead.org/battery-2.6 2009-09-23 10:11:08 -07:00
isdn seq_file: constify seq_operations 2009-09-23 07:39:29 -07:00
leds spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
lguest Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2009-09-23 09:23:45 -07:00
macintosh trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
mca
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md Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
memstick const: make block_device_operations const 2009-09-22 07:17:25 -07:00
message Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
mfd mfd/gpio: add a GPIO interface to the UCB1400 MFD chip driver via gpiolib 2009-09-23 07:39:48 -07:00
misc spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
mmc spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
mtd Merge git://git.infradead.org/mtd-2.6 2009-09-23 10:07:49 -07:00
net virtio_net: avoid (most) NETDEV_TX_BUSY by stopping queue early. 2009-09-24 09:59:20 +09:30
nubus
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of of: remove "stm,m25p40" alias 2009-09-23 07:39:43 -07:00
oprofile const: mark remaining super_operations const 2009-09-22 07:17:24 -07:00
parisc mm: replace various uses of num_physpages by totalram_pages 2009-09-22 07:17:38 -07:00
parport
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pci Merge git://git.infradead.org/iommu-2.6 2009-09-23 10:06:10 -07:00
pcmcia pcmcia: cleanup/fixup patch for sa1100_jornada_pcmcia driver 2009-09-22 07:17:42 -07:00
platform Merge branch 'misc-2.6.32' into release 2009-09-19 02:14:45 -04:00
pnp Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-09-23 09:32:11 -07:00
power Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-09-23 03:49:27 +04:00
pps
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ps3
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rapidio
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regulator regulator: fix voltage range in da9034 ldo12 2009-09-22 13:58:23 +01:00
rtc rtc: add boot_timesource sysfs attribute 2009-09-23 07:39:46 -07:00
s390 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 2009-09-23 10:02:14 -07:00
sbus const: make block_device_operations const 2009-09-22 07:17:25 -07:00
scsi seq_file: constify seq_operations 2009-09-23 07:39:29 -07:00
serial serial core: fix new kernel-doc warnings 2009-09-23 11:24:57 -07:00
sfi SFI: remove unneeded includes 2009-09-15 15:08:40 -04:00
sh
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sn
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spi spi: handle TX-only/RX-only 2009-09-23 07:39:44 -07:00
ssb ssb/sdio: fix printk format warnings 2009-09-16 16:21:00 -04:00
staging spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
tc
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telephony
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thermal thermal: add missing Kconfig dependency 2009-09-19 01:41:49 -04:00
uio Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-09-18 09:43:09 -07:00
usb USB: skeleton: fix coding style issues. 2009-09-23 06:46:40 -07:00
uwb trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
video sisfb: change SiS_DDC_Port type to SISIOADDRESS 2009-09-23 07:39:57 -07:00
virtio virtio: add virtio IDs file 2009-09-23 22:26:32 +09:30
vlynq vlynq: includecheck fix: drivers/vlynq/vlynq.c 2009-09-23 07:39:30 -07:00
w1
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watchdog [WATCHDOG] sizeof cleanup 2009-09-18 08:39:37 +00:00
xen Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
zorro
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Kconfig
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Makefile Merge git://git.infradead.org/mtd-2.6 2009-09-23 10:07:49 -07:00