Revision 85746e429f8e5dc8c5c0beadc0f099cb1feab93e authored by Linus Torvalds on 07 July 2011, 20:16:21 UTC, committed by Linus Torvalds on 07 July 2011, 20:16:21 UTC
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (31 commits) sctp: fix missing send up SCTP_SENDER_DRY_EVENT when subscribe it net: refine {udp|tcp|sctp}_mem limits vmxnet3: round down # of queues to power of two net: sh_eth: fix the parameter for the ETHER of SH7757 net: sh_eth: fix cannot work half-duplex mode net: vlan: enable soft features regardless of underlying device vmxnet3: fix starving rx ring whenoc_skb kb fails bridge: Always flood broadcast packets greth: greth_set_mac_add would corrupt the MAC address. net: bind() fix error return on wrong address family natsemi: silence dma-debug warnings net: 8139too: Initial necessary vlan_features to support vlan Fix call trace when interrupts are disabled while sleeping function kzalloc is called qlge:Version change to v1.00.00.29 qlge: Fix printk priority so chip fatal errors are always reported. qlge:Fix crash caused by mailbox execution on wedged chip. xfrm4: Don't call icmp_send on local error ipv4: Don't use ufo handling on later transformed packets xfrm: Remove family arg from xfrm_bundle_ok ipv6: Don't put artificial limit on routing table size. ...
IRQ.txt
What is an IRQ?
An IRQ is an interrupt request from a device.
Currently they can come in over a pin, or over a packet.
Several devices may be connected to the same pin thus
sharing an IRQ.
An IRQ number is a kernel identifier used to talk about a hardware
interrupt source. Typically this is an index into the global irq_desc
array, but except for what linux/interrupt.h implements the details
are architecture specific.
An IRQ number is an enumeration of the possible interrupt sources on a
machine. Typically what is enumerated is the number of input pins on
all of the interrupt controller in the system. In the case of ISA
what is enumerated are the 16 input pins on the two i8259 interrupt
controllers.
Architectures can assign additional meaning to the IRQ numbers, and
are encouraged to in the case where there is any manual configuration
of the hardware involved. The ISA IRQs are a classic example of
assigning this kind of additional meaning.
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