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Hoang-Nam Nguyen 31726798bd IB/ehca: Fix sync between completion handler and destroy cq 
This patch fixes two issues reported by Roland Dreier and Christoph Hellwig:

- Mismatched sync/locking between completion handler and destroy cq We
  introduced a counter nr_events per cq to track number of irq events
  seen. This counter is incremented when an event queue entry is seen
  and decremented after completion handler has been called regardless
  if scaling code is active or not. Note that nr_callbacks tracks
  number of events assigned to a cpu and both counters can potentially
  diverge.

  The sync between running completion handler and destroy cq is done
  by using the global spin lock ehca_cq_idr_lock.

- Replace yield by wait_event on the counter above to become zero.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-03-01 13:04:05 -08:00
..
acorn
acpi backlight: Separate backlight properties from backlight ops pointers 2007-02-20 09:26:53 +00:00
amba
ata [PATCH] Fix oops in pata_pcmcia 2007-02-26 13:02:08 -08:00
atm atm: Use ARRAY_SIZE macro when appropriate 2007-02-17 15:30:48 -05:00
auxdisplay [PATCH] cfag12864b: fix crash when built-in and no parport present 2007-02-20 17:10:14 -08:00
base Driver core: fix error by cleanup up symlinks properly 2007-02-23 14:52:09 -08:00
block [PATCH] pktcdvd: Correctly set cmd_len field in pkt_generic_packet 2007-02-20 17:10:14 -08:00
bluetooth [Bluetooth] Make use of MODULE_FIRMWARE 2007-02-26 11:42:42 -08:00
cdrom
char [PATCH] Make hvc_console.c compile on non-powerpc: Remove NO_IRQ 2007-02-26 12:58:33 -08:00
clocksource
connector
cpufreq Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 2007-02-26 14:17:50 -08:00
crypto
dio
dma
edac
eisa
fc4
firmware
hid
hwmon
i2c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-02-19 13:29:02 -08:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-02-19 13:29:02 -08:00
ieee1394 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-02-19 13:29:02 -08:00
infiniband IB/ehca: Fix sync between completion handler and destroy cq 2007-03-01 13:04:05 -08:00
input Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input 2007-02-19 13:31:34 -08:00
isdn [PATCH] drivers/isdn/gigaset/: build asyncdata.o into the gigaset module 2007-02-20 17:10:16 -08:00
kvm
leds
macintosh backlight: Separate backlight properties from backlight ops pointers 2007-02-20 09:26:53 +00:00
mca
md
media V4L/DVB (5253): Qt1010: whitespace / 80 column cleanups 2007-02-21 13:35:33 -02:00
message
mfd [PATCH] drivers/mfd/sm501.c: Replace pci_module_init with pci_register_driver 2007-02-26 12:35:47 -08:00
misc backlight: Separate backlight properties from backlight ops pointers 2007-02-20 09:26:53 +00:00
mmc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-02-19 13:18:39 -08:00
mtd [ARM] 4233/1: nand/s3c2410.c: warning fix 2007-02-25 16:41:41 +00:00
net Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6 2007-02-26 12:48:06 -08:00
nubus
oprofile
parisc Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6 2007-02-26 12:48:06 -08:00
parport [PATCH] parport_pc: fix parport_pc_probe_port section warning 2007-02-20 17:10:16 -08:00
pci Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-02-19 13:29:02 -08:00
pcmcia Driver core: more fallout from class_device changes for pcmcia 2007-02-23 14:52:09 -08:00
pnp
ps3
rapidio
rtc [PATCH] at91_rtc updates 2007-02-20 17:10:15 -08:00
s390 [S390] nss: Free unused memory in kernel image. 2007-02-21 10:55:37 +01:00
sbus [SPARC] uctrl: Check request_irq() return value. 2007-02-26 11:35:51 -08:00
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-02-19 13:32:28 -08:00
serial Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6 2007-02-26 12:48:06 -08:00
sh
sn
spi [PATCH] spi_s3c2410_gpio.c spi mode 2 and 3 support 2007-02-20 17:10:16 -08:00
tc
telephony
usb USB: export autosuspend delay in sysfs 2007-02-23 15:03:47 -08:00
video [PATCH] Fix build-failure in drivers/video/s3fb.c 2007-02-26 12:56:46 -08:00
w1
zorro
Kconfig
Makefile