Dan Williams 6f49a57aa5 dmaengine: up-level reference counting to the module level ... Simply, if a client wants any dmaengine channel then prevent all dmaengine modules from being removed. Once the clients are done re-enable module removal. Why?, beyond reducing complication: 1/ Tracking reference counts per-transaction in an efficient manner, as is currently done, requires a complicated scheme to avoid cache-line bouncing effects. 2/ Per-transaction ref-counting gives the false impression that a dma-driver can be gracefully removed ahead of its user (net, md, or dma-slave) 3/ None of the in-tree dma-drivers talk to hot pluggable hardware, but if such an engine were built one day we still would not need to notify clients of remove events. The driver can simply return NULL to a ->prep() request, something that is much easier for a client to handle. Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>		2009-01-06 11:38:14 -07:00
..
accessibility
acpi	cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t	2009-01-03 19:15:40 +01:00
amba
ata	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2008-12-30 17:43:10 -08:00
atm
auxdisplay
base	Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-03 12:04:39 -08:00
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus	2008-12-30 17:37:25 -08:00
bluetooth
cdrom	cdrom: reduce stack usage of mmc_ioctl_dvd_read_struct	2008-12-29 08:28:43 +01:00
char	sparseirq: move set/get_timer_rand_state back to .c	2009-01-03 12:01:23 -08:00
clocksource	Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-02 11:44:09 -08:00
connector
cpufreq
cpuidle
crypto
dca
dio
dma	dmaengine: up-level reference counting to the module level	2009-01-06 11:38:14 -07:00
edac	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	2008-12-28 16:54:33 -08:00
eisa
firewire
firmware	DMI: add dmi_match	2008-12-29 07:39:34 -05:00
gpio
gpu	drm/i915: fix modeset devname allocation + agp init return check.	2008-12-29 18:18:19 +10:00
hid
hwmon
i2c	Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm	2008-12-30 17:36:49 -08:00
ide	ide-atapi: start dma in a drive-specific way	2009-01-02 16:12:56 +01:00
idle
ieee1394
infiniband	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	2008-12-31 23:05:57 +10:30
input	Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm	2008-12-30 17:36:49 -08:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2008-12-28 12:49:40 -08:00
leds
lguest	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask	2009-01-03 18:53:31 +01:00
macintosh	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	2008-12-28 16:54:33 -08:00
mca
md	bio: allow individual slabs in the bio_set	2008-12-29 08:29:23 +01:00
media	V4L/DVB (10173): Missing v4l2_prio_close in radio_release	2009-01-03 10:50:38 -02:00
memstick
message	[SCSI] fusion: use ARRAY_SIZE	2008-12-29 11:24:17 -06:00
mfd
misc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2008-12-28 12:49:40 -08:00
mmc	dmaengine: up-level reference counting to the module level	2009-01-06 11:38:14 -07:00
mtd	Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6	2009-01-02 15:57:26 -08:00
net	hso maintainers update patch	2009-01-02 10:19:43 -08:00
nubus
of
oprofile	shrink struct dentry	2008-12-31 18:07:38 -05:00
parisc	Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-02 11:44:09 -08:00
parport
pci	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu	2009-01-03 12:03:52 -08:00
pcmcia
pnp	percpu: fix percpu accessors to potentially !cpu_possible() cpus: pnpbios	2009-01-01 10:12:14 +10:30
power
ps3
rapidio
regulator
rtc	rtc: add alarm/update irq interfaces	2009-01-04 13:33:20 -08:00
s390	[PATCH] improve idle cputime accounting	2008-12-31 15:11:48 +01:00
sbus
scsi	remove ide-scsi	2009-01-02 16:12:51 +01:00
serial	serial_8250: support for Sealevel Systems Model 7803 COMM+8	2009-01-02 10:19:44 -08:00
sh
sn
spi
ssb
staging	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2008-12-28 12:49:40 -08:00
tc
telephony
thermal
uio
usb	Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb	2009-01-02 10:31:04 -08:00
uwb	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream	2009-01-02 13:17:13 +00:00
video	viafb: fix crashes due to 4k stack overflow	2009-01-04 13:33:20 -08:00
virtio	virtio: add PCI device release() function	2008-12-30 09:26:10 +10:30
w1
watchdog	[WATCHDOG] Add support for the WM8350 watchdog	2008-12-31 16:12:54 +00:00
xen	Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-02 11:44:09 -08:00
zorro
Kconfig
Makefile