Peter Hurley 35202f7d84 firewire: remove global lock around address handlers, convert to RCU ... Upper-layer handlers for inbound requests were called with a spinlock held by firewire-core. Calling into upper layers with a lower layer lock held is generally a bad idea. What's more, since commit ea102d0ec4 "firewire: core: convert AR-req handler lock from _irqsave to _bh", a caller of fw_send_request() i.e. initiator of outbound request could no longer do that while having interrupts disabled, if the local node was addressed by that request. In order to make all this more flexible, convert the management of address ranges and handlers from a global lock around readers and writers to RCU (and a remaining global lock for writers). As a minor side effect, handling of inbound requests at different cards and of local requests is now no longer serialized. (There is still per-card serialization of remote requests since firewire-ohci uses a single DMA tasklet for inbound request events.) In other words, address handlers are now called in an RCU read-side critical section instead of from within a spin_lock_bh serialized section. (Changelog rewritten by Stefan R.) Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>		2012-09-28 11:47:41 +02:00
..
core-card.c	IEEE 1394 (FireWire) subsystem updates post v3.4:	2012-05-24 12:57:47 -07:00
core-cdev.c	firewire: core: fix DMA mapping direction	2012-04-17 22:27:37 +02:00
core-device.c	firewire: core: feed /dev/random with devices' GUIDs	2012-09-25 16:18:17 +02:00
core-iso.c	firewire: core: fix multichannel IR with buffers larger than 2 GB	2012-06-17 19:35:26 +02:00
core-topology.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
core-transaction.c	firewire: remove global lock around address handlers, convert to RCU	2012-09-28 11:47:41 +02:00
core.h	IEEE 1394 (FireWire) subsystem updates post v3.4:	2012-05-24 12:57:47 -07:00
init_ohci1394_dma.c	ieee1394: move init_ohci1394_dma to drivers/firewire/	2010-10-11 14:48:03 +02:00
Kconfig	firewire: ohci: move runtime debug facility out of #ifdef	2012-03-10 17:41:19 +01:00
Makefile	ieee1394: move init_ohci1394_dma to drivers/firewire/	2010-10-11 14:48:03 +02:00
net.c	firewire: net: use dev_printk API	2012-02-22 22:36:00 +01:00
nosy-user.h
nosy.c	firewire: use module_pci_driver	2012-04-09 14:23:37 +02:00
nosy.h
ohci.c	firewire: ohci: get IR bit from TSB41BA3D phy	2012-09-25 16:18:17 +02:00
ohci.h	firewire: ohci: fix TI TSB82AA2 regression since 2.6.35	2010-10-17 14:09:12 +02:00
sbp2.c	firewire: sbp2: document the absence of alignment requirements	2012-05-21 21:49:44 +02:00