Yinghai Lu 0b8f1efad3 sparse irq_desc[] array: core kernel and x86 changes ...

Impact: new feature

Problem on distro kernels: irq_desc[NR_IRQS] takes megabytes of RAM with
NR_CPUS set to large values. The goal is to be able to scale up to much
larger NR_IRQS value without impacting the (important) common case.

To solve this, we generalize irq_desc[NR_IRQS] to an (optional) array of
irq_desc pointers.

When CONFIG_SPARSE_IRQ=y is used, we use kzalloc_node to get irq_desc,
this also makes the IRQ descriptors NUMA-local (to the site that calls
request_irq()).

This gets rid of the irq_cfg[] static array on x86 as well: irq_cfg now
uses desc->chip_data for x86 to store irq_cfg.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2008-12-08 14:31:51 +01:00

..

array.c

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2008-10-27 08:40:17 -07:00

base.c

[PATCH] introduce fmode_t, do annotations

2008-10-21 07:47:06 -04:00

cmdline.c

proc: switch /proc/cmdline to seq_file

2008-10-23 14:29:04 +04:00

cpuinfo.c

proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c

2008-10-23 15:05:11 +04:00

devices.c

proc: move /proc/devices code to fs/proc/devices.c

2008-10-23 15:02:18 +04:00

generic.c

proc: use WARN() rather than printk+backtrace

2008-10-23 13:34:38 +04:00

inode-alloc.txt

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

inode.c

proc: proc_init_inodecache() can't fail

2008-10-23 13:27:50 +04:00

internal.h

proc: move /proc/kmsg creation to fs/proc/kmsg.c

2008-10-23 14:35:08 +04:00

interrupts.c

proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c

2008-10-23 15:15:46 +04:00

Kconfig

proc: move PROC_PAGE_MONITOR to fs/proc/Kconfig

2008-10-10 04:18:57 +04:00

kcore.c

proc: move all /proc/kcore stuff to fs/proc/kcore.c

2008-10-23 18:32:38 +04:00

kmsg.c

proc: move /proc/kmsg creation to fs/proc/kmsg.c

2008-10-23 14:35:08 +04:00

loadavg.c

proc: switch /proc/loadavg to seq_file

2008-10-23 13:45:28 +04:00

Makefile

proc: remove fs/proc/proc_misc.c

2008-10-23 18:54:05 +04:00

meminfo.c

proc: switch /proc/meminfo to seq_file

2008-10-23 13:52:40 +04:00

mmu.c

fs/proc/mmu.c: headers butchery

2007-10-17 08:42:48 -07:00

nommu.c

/proc/self/maps doesn't display the real file offset

2008-08-20 15:40:30 -07:00

page.c

proc: move pagecount stuff to fs/proc/page.c

2008-10-23 18:48:31 +04:00

proc_devtree.c

proc: spread __init

2008-10-23 13:32:31 +04:00

proc_net.c

netns: make get_proc_net() static

2008-07-22 14:19:19 -07:00

proc_sysctl.c

Fix broken ownership of /proc/sys/ files

2008-11-16 15:09:52 -08:00

proc_tty.c

tty: Ldisc revamp

2008-07-20 17:12:34 -07:00

root.c

proc: remove fs/proc/proc_misc.c

2008-10-23 18:54:05 +04:00

stat.c

sparse irq_desc[] array: core kernel and x86 changes

2008-12-08 14:31:51 +01:00

task_mmu.c

proc: fix vma display mismatch between /proc/pid/{maps,smaps}

2008-10-23 13:21:29 +04:00

task_nommu.c

proc: remove kernel.maps_protect

2008-10-10 04:24:51 +04:00

uptime.c

proc: revert /proc/uptime to ->read_proc hook

2008-10-27 22:56:56 +03:00

version.c

proc: switch /proc/version to seq_file

2008-10-23 14:19:58 +04:00

vmcore.c

proc: move /proc/vmcore creation to fs/proc/vmcore.c

2008-10-23 18:51:22 +04:00