Ingo Molnar f8cbd99bd3 [PATCH] sched: voluntary kernel preemption ... This patch adds a new preemption model: 'Voluntary Kernel Preemption'. The 3 models can be selected from a new menu: (X) No Forced Preemption (Server) ( ) Voluntary Kernel Preemption (Desktop) ( ) Preemptible Kernel (Low-Latency Desktop) we still default to the stock (Server) preemption model. Voluntary preemption works by adding a cond_resched() (reschedule-if-needed) call to every might_sleep() check. It is lighter than CONFIG_PREEMPT - at the cost of not having as tight latencies. It represents a different latency/complexity/overhead tradeoff. It has no runtime impact at all if disabled. Here are size stats that show how the various preemption models impact the kernel's size: text data bss dec hex filename 3618774 547184 179896 4345854 424ffe vmlinux.stock 3626406 547184 179896 4353486 426dce vmlinux.voluntary +0.2% 3748414 548640 179896 4476950 445016 vmlinux.preempt +3.5% voluntary-preempt is +0.2% of .text, preempt is +3.5%. This feature has been tested for many months by lots of people (and it's also included in the RHEL4 distribution and earlier variants were in Fedora as well), and it's intended for users and distributions who dont want to use full-blown CONFIG_PREEMPT for one reason or another. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2005-06-25 16:24:45 -07:00
..
byteorder
dvb
hdlc
isdn
lockd	[PATCH] NLM: fix a client-side race on blocking locks.	2005-06-22 16:07:42 -04:00
mmc
mtd
netfilter_arp
netfilter_bridge
netfilter_ipv4	[NETFILTER]: Fix "iptables -D" rule deletion with ipt_CLUSTERIP target.	2005-06-22 12:38:33 -07:00
netfilter_ipv6
nfsd	[PATCH] knfsd: nfsd4 reboot dirname fix	2005-06-24 00:06:36 -07:00
raid	[PATCH] Two small fixes for md verion-1 superblocks.	2005-06-21 19:07:47 -07:00
sunrpc	[PATCH] NFSD: Add server support for NFSv3 ACLs.	2005-06-22 16:07:23 -04:00
tc_act
tc_ematch	[PKT_SCHED]: Packet classification based on textsearch (ematch)	2005-06-23 21:00:58 -07:00
8250_pci.h
a.out.h
ac97_codec.h
acct.h
acpi.h
adb.h
adfs_fs_i.h
adfs_fs_sb.h
adfs_fs.h
affs_fs.h
affs_hardblocks.h
agp_backend.h
agpgart.h
aio_abi.h
aio.h
amifd.h
amifdreg.h
amigaffs.h
apm_bios.h
arcdevice.h
arcfb.h	[PATCH] Framebuffer driver for Arc LCD board	2005-06-21 19:07:41 -07:00
ata.h
atalk.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_suni.h
atm_tcp.h
atm_zatm.h
atm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
attribute_container.h
audit.h
auto_fs4.h	[PATCH] autofs4: subversion bump to identify these changes	2005-06-21 19:07:36 -07:00
auto_fs.h
awe_voice.h
ax25.h
b1lli.h
b1pcmcia.h
backing-dev.h
backlight.h
baycom.h
bcd.h
bfs_fs.h
binfmts.h	[PATCH] setuid core dump	2005-06-23 09:45:26 -07:00
bio.h
bitmap.h
bitops.h
blkdev.h	[PATCH] blk: remove BLK_TAGS_{PER_LONG|MASK}	2005-06-23 09:45:15 -07:00
blkpg.h
blockgroup_lock.h
bootmem.h	[PATCH] sparsemem base: simple NUMA remap space allocator	2005-06-23 09:45:01 -07:00
bpqether.h
buffer_head.h
cache.h
capability.h
capi.h
cciss_ioctl.h
cd1400.h
cdev.h
cdk.h
cdrom.h
chio.h
circ_buf.h
cobalt-nvram.h
coda_cache.h
coda_fs_i.h
coda_linux.h
coda_proc.h
coda_psdev.h
coda.h
coff.h
com20020.h
compat_ioctl.h
compat.h
compiler-gcc2.h
compiler-gcc3.h
compiler-gcc4.h
compiler-gcc.h
compiler-intel.h
compiler.h
completion.h
comstats.h
concap.h
config.h
console_struct.h
console.h
consolemap.h
cpu.h	[PATCH] make smp_prepare_cpu to a weak function	2005-06-25 16:24:30 -07:00
cpufreq.h
cpumask.h
cpuset.h
cramfs_fs_sb.h
cramfs_fs.h
crc32.h
crc32c.h
crc-ccitt.h
crypto.h
cryptohash.h
ctype.h
cuda.h
cyclades.h
cyclomx.h
cycx_cfm.h
cycx_drv.h
cycx_x25.h
dcache.h
dcookies.h
debugfs.h
delay.h
devfs_fs_kernel.h
devfs_fs.h
device-mapper.h
device.h
devpts_fs.h
dio.h
dirent.h
divert.h
dm9000.h
dm-ioctl.h
dma-mapping.h
dmapool.h
dmi.h	[PATCH] I8K: use standard DMI interface	2005-06-25 16:24:24 -07:00
dn.h
dnotify.h
dqblk_v1.h	[PATCH] quota: improve credits estimates	2005-06-24 00:05:19 -07:00
dqblk_v2.h	[PATCH] quota: improve credits estimates	2005-06-24 00:05:19 -07:00
dqblk_xfs.h
ds1286.h
dtlk.h
edd.h
eeprom.h
efi.h
efs_dir.h
efs_fs_i.h
efs_fs_sb.h
efs_fs.h
efs_vh.h
eisa.h
elevator.h
elf-fdpic.h
elf.h
elfcore.h
err.h
errno.h
errqueue.h
etherdevice.h
ethtool.h
eventpoll.h
ext2_fs_sb.h
ext2_fs.h	[PATCH] xip: ext2: execute in place	2005-06-24 00:06:41 -07:00
ext3_fs_i.h
ext3_fs_sb.h
ext3_fs.h	[PATCH] quota: ext3: Improve quota credit estimates	2005-06-24 00:05:20 -07:00
ext3_jbd.h	[PATCH] quota: ext3: Improve quota credit estimates	2005-06-24 00:05:20 -07:00
fadvise.h
fb.h	[PATCH] fbdev: stack reduction	2005-06-21 19:07:41 -07:00
fcdevice.h
fcntl.h	[PATCH] Don't force O_LARGEFILE for 32 bit processes on ia64	2005-06-23 09:45:28 -07:00
fd1772.h
fd.h
fddidevice.h
fdreg.h
file.h
filter.h
firmware.h
flat.h
font.h	[PATCH] New framebuffer fonts + updated 12x22 font available	2005-06-21 19:07:41 -07:00
fs_struct.h
fs.h	[PATCH] xip: reduce code duplication	2005-06-24 00:06:41 -07:00
fsl_devices.h	[PATCH] ppc32: Added support for new MPC8548 family of PowerQUICC III processors	2005-06-21 18:46:23 -07:00
ftape-header-segment.h
ftape-vendors.h
ftape.h
futex.h
gameport.h
gen_stats.h
genalloc.h	[PATCH] ia64 uncached alloc	2005-06-21 18:46:18 -07:00
generic_serial.h
genhd.h	[PATCH] add check to /proc/devices read routines	2005-06-23 09:45:19 -07:00
gfp.h	[PATCH] Periodically drain non local pagesets	2005-06-21 18:46:18 -07:00
hardirq.h
harrier_defs.h
hash.h
hayesesp.h
hdlc.h
hdlcdrv.h
hdpu_features.h
hdreg.h
hdsmart.h
hiddev.h
highmem.h
highuid.h
hippidevice.h
hpet.h
hpfs_fs.h
hugetlb.h	[PATCH] Hugepage consolidation	2005-06-21 18:46:15 -07:00
hwmon-sysfs.h	[PATCH] I2C: rename i2c-sysfs.h to hwmon-sysfs.h	2005-06-21 21:52:05 -07:00
hysdn_if.h
i2c-algo-bit.h
i2c-algo-ite.h
i2c-algo-pca.h
i2c-algo-pcf.h
i2c-algo-sgi.h
i2c-algo-sibyte.h
i2c-dev.h
i2c-id.h	[PATCH] I2C: Add support for Maxim/Dallas DS1374 Real-Time Clock Chip (1/2)	2005-06-21 21:52:06 -07:00
i2c-sensor.h
i2c-vid.h	[PATCH] I2C: i2c-vid.h: Support for VID to reg conversion	2005-06-21 21:51:49 -07:00
i2c.h	[PATCH] I2C: Kill address ranges in non-sensors i2c chip drivers	2005-06-21 21:51:48 -07:00
i2o-dev.h	[PATCH] I2O: second code cleanup of sparse warnings and unneeded syncronization	2005-06-24 00:05:29 -07:00
i2o.h	[PATCH] I2O: Lindent run and replacement of printk through osm printing functions	2005-06-24 00:05:29 -07:00
i8k.h
ibmtr.h
icmp.h
icmpv6.h
ide.h	[PATCH] NUMA aware block device control structure allocation	2005-06-23 09:45:09 -07:00
idr.h
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h
if_cablemodem.h
if_ec.h
if_eql.h
if_ether.h
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_ltalk.h
if_packet.h
if_plip.h
if_ppp.h
if_pppox.h
if_shaper.h
if_slip.h
if_strip.h
if_tr.h
if_tun.h
if_tunnel.h
if_vlan.h
if_wanpipe_common.h
if_wanpipe.h
if.h
igmp.h
in6.h
in_route.h
in.h
inet.h
inetdevice.h
init_task.h	[PATCH] sched: cleanup context switch locking	2005-06-25 16:24:43 -07:00
init.h	[PATCH] x86_64: Change init sections for CPU hotplug support	2005-06-25 16:24:30 -07:00
initrd.h
input.h
interrupt.h
ioc4.h	[PATCH] ioc4: PCI bus speed detection	2005-06-21 18:46:32 -07:00
ioctl32.h
ioctl.h
ioport.h
ip6_tunnel.h
ip_mp_alg.h
ip.h
ipc.h
ipmi_msgdefs.h
ipmi_smi.h
ipmi.h	[PATCH] ipmi: add power cycle capability	2005-06-24 00:05:23 -07:00
ipsec.h
ipv6_route.h
ipv6.h
ipx.h
irda.h
irq_cpustat.h
irq.h	[PATCH] make various thing static	2005-06-24 00:06:43 -07:00
isapnp.h
isdn_divertif.h
isdn_ppp.h
isdn.h
isdnif.h
isicom.h
iso_fs.h
istallion.h
ite_gpio.h
ixjuser.h
jbd.h
jffs2_fs_i.h
jffs2_fs_sb.h
jffs2.h
jffs.h
jhash.h
jiffies.h
journal-head.h
joystick.h
kallsyms.h
kbd_diacr.h
kbd_kern.h
kd.h
kdev_t.h
kernel_stat.h
kernel.h	[PATCH] sched: voluntary kernel preemption	2005-06-25 16:24:45 -07:00
kernelcapi.h
key-ui.h	[PATCH] Keys: Make request-key create an authorisation key	2005-06-24 00:05:19 -07:00
key.h	[PATCH] Keys: Make request-key create an authorisation key	2005-06-24 00:05:19 -07:00
keyboard.h
keyctl.h	[PATCH] Keys: Make request-key create an authorisation key	2005-06-24 00:05:19 -07:00
kfifo.h
klist.h
kmalloc_sizes.h
kmod.h	[PATCH] Keys: Pass session keyring to call_usermodehelper()	2005-06-24 00:05:18 -07:00
kobj_map.h
kobject_uevent.h
kobject.h
kprobes.h	[PATCH] kprobes: Temporary disarming of reentrant probe	2005-06-23 09:45:24 -07:00
kref.h
kthread.h
lapb.h
lcd.h
libata.h
libps2.h
limits.h
linkage.h
linux_logo.h
list.h	[PATCH] RCU: clean up a few remaining synchronize_kernel() calls	2005-06-25 16:24:38 -07:00
llc.h
loop.h	[PATCH] optimise loop driver a bit	2005-06-23 09:45:18 -07:00
lp.h
major.h
matroxfb.h
mbcache.h
mc6821.h
mc146818rtc.h
mca-legacy.h
mca.h
mempolicy.h
mempool.h	[PATCH] NUMA aware block device control structure allocation	2005-06-23 09:45:09 -07:00
meye.h
mii.h
minix_fs.h
miscdevice.h
mm_inline.h
mm.h	[PATCH] sparsemem memory model	2005-06-23 09:45:04 -07:00
mman.h
mmtimer.h
mmzone.h	[PATCH] sparsemem hotplug base	2005-06-23 09:45:05 -07:00
mod_devicetable.h
module.h	[PATCH] modules: add version and srcversion to sysfs	2005-06-24 00:06:40 -07:00
moduleloader.h
moduleparam.h
mount.h
mpage.h
mqueue.h
mroute.h
msdos_fs.h
msg.h
mtio.h
mv643xx.h
n_r3964.h
namei.h
namespace.h	[PATCH] make various thing static	2005-06-24 00:06:43 -07:00
nbd.h
ncp_fs_i.h
ncp_fs_sb.h
ncp_fs.h
ncp_mount.h
ncp_no.h
ncp.h
net.h
netdevice.h	[NET]: Eliminate netif_rx massive packet drops.	2005-06-23 20:12:48 -07:00
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netfilter_logging.h
netfilter.h
netlink.h
netpoll.h	[NETPOLL]: allow multiple netpoll_clients to register against one interface	2005-06-22 22:05:59 -07:00
netrom.h
nfs2.h
nfs3.h
nfs4_acl.h
nfs4_mount.h
nfs4.h	[PATCH] nfsd4: fix fh_expire_type	2005-06-24 00:06:28 -07:00
nfs_fs_i.h	[PATCH] NFSv4: Clean up nfs4 lock state accounting	2005-06-22 16:07:42 -04:00
nfs_fs_sb.h	[PATCH] NFS: Add support for NFSv3 ACLs	2005-06-22 16:07:24 -04:00
nfs_fs.h	[PATCH] NFS: Replace nfs_page insertion sort with a radix sort	2005-06-22 16:07:39 -04:00
nfs_idmap.h
nfs_mount.h	[PATCH] NFS: Add support for NFSv3 ACLs	2005-06-22 16:07:24 -04:00
nfs_page.h	[PATCH] NFS: Replace nfs_page insertion sort with a radix sort	2005-06-22 16:07:39 -04:00
nfs_xdr.h	[PATCH] NFS: Add support for NFSv3 ACLs	2005-06-22 16:07:24 -04:00
nfs.h
nfsacl.h	[PATCH] NFSD: Add server support for NFSv3 ACLs.	2005-06-22 16:07:23 -04:00
nfsd_idmap.h	[PATCH] knfsd: nfsd4: idmap initialization	2005-06-24 00:06:32 -07:00
nls.h
nmi.h
node.h
nodemask.h
notifier.h
nubus.h
numa.h	[PATCH] sparsemem memory model	2005-06-23 09:45:04 -07:00
nvram.h
openprom_fs.h
oprofile.h
page-flags.h	[PATCH] __read_page_state(): pass unsigned long instead of unsigned	2005-06-21 18:46:17 -07:00
pagemap.h	[PATCH] VM: add __GFP_NORECLAIM	2005-06-21 18:46:14 -07:00
pagevec.h
param.h
parport_pc.h
parport.h
parser.h
patchkey.h
pci_ids.h	[PATCH] tpm: TPMs on additional LPC bus	2005-06-24 00:05:27 -07:00
pci-acpi.h
pci-dynids.h
pci.h
pcieport_if.h
percpu_counter.h
percpu.h
personality.h
pfkeyv2.h
pg.h
phonedev.h
pid.h
pipe_fs_i.h
pkt_cls.h	[PKT_SCHED]: Packet classification based on textsearch (ematch)	2005-06-23 21:00:58 -07:00
pkt_sched.h
pktcdvd.h	[PATCH] Improve CD/DVD packet driver write performance	2005-06-23 09:45:30 -07:00
platform.h
pm.h	[PATCH] properly stop devices before poweroff	2005-06-25 16:24:33 -07:00
pmu.h
pnp.h
pnpbios.h
poll.h
posix_acl_xattr.h	[PATCH] remove <linux/xattr_acl.h>	2005-06-23 09:45:33 -07:00
posix_acl.h
posix_types.h
posix-timers.h
ppdev.h
ppp_channel.h
ppp_defs.h
ppp-comp.h
prctl.h
preempt.h
prefetch.h
prio_tree.h
proc_fs.h
profile.h
ps2esdi.h
ptrace.h
qic117.h
qnx4_fs.h	[PATCH] fs/qnx4/*: fix sparse warnings	2005-06-24 14:14:24 -07:00
qnxtypes.h	[PATCH] fs/qnx4/*: fix sparse warnings	2005-06-24 14:14:24 -07:00
quota.h	[PATCH] quota: improve credits estimates	2005-06-24 00:05:19 -07:00
quotaio_v1.h
quotaio_v2.h
quotaops.h	[PATCH] quota: consolidate code surrounding vfs_quota_on_mount	2005-06-23 09:45:20 -07:00
radeonfb.h
radix-tree.h
ramfs.h
random.h
raw.h
rbtree.h
rcupdate.h
reboot_fixups.h
reboot.h
reiserfs_acl.h	[PATCH] remove <linux/xattr_acl.h>	2005-06-23 09:45:33 -07:00
reiserfs_fs_i.h
reiserfs_fs_sb.h	[PATCH] quota: reiserfs: improve quota credit estimates	2005-06-24 00:05:20 -07:00
reiserfs_fs.h	[PATCH] quota: reiserfs: improve quota credit estimates	2005-06-24 00:05:20 -07:00
reiserfs_xattr.h
resource.h
rmap.h	[PATCH] xip: fs/mm: execute in place	2005-06-24 00:06:41 -07:00
romfs_fs.h
root_dev.h
rose.h
route.h
rslib.h
rtc.h
rtnetlink.h	[PKT_SCHED]: Packet classification based on textsearch (ematch)	2005-06-23 21:00:58 -07:00
rwsem-spinlock.h
rwsem.h
sc26198.h
scatterlist.h
scc.h
sched.h	[PATCH] Dynamic sched domains: sched changes	2005-06-25 16:24:45 -07:00
sctp.h
scx200_gpio.h
scx200.h
sdla_asy.h
sdla_chdlc.h
sdla_fr.h
sdla_ppp.h
sdla_x25.h
sdla.h
sdladrv.h
sdlapci.h
sdlasfm.h
seccomp.h
securebits.h
security.h
selection.h
selinux_netlink.h
sem.h
seq_file.h
seqlock.h
serial167.h
serial_8250.h
serial_core.h
serial_reg.h
serial.h
serialP.h
serio.h
shm.h
shmem_fs.h
signal.h
skbuff.h	[NET]: skb_find_text() - Find a text pattern in skb data	2005-06-23 21:00:17 -07:00
slab.h
smb_fs_i.h
smb_fs_sb.h
smb_fs.h
smb_mount.h
smb.h
smbno.h
smp_lock.h
smp.h
snmp.h
socket.h
sockios.h
som.h
sonet.h
sonypi.h
sort.h
sound.h
soundcard.h
spinlock.h
stallion.h
stat.h
statfs.h
stddef.h
stop_machine.h
string.h	[PATCH] create a kstrdup library function	2005-06-23 09:45:18 -07:00
stringify.h
superhyway.h
suspend.h	[PATCH] suspend/resume SMP support	2005-06-25 16:24:32 -07:00
swap.h	[PATCH] vm: try_to_free_pages unused argument	2005-06-21 18:46:17 -07:00
swapops.h
synclink.h
sys.h
syscalls.h
sysctl.h	[NET]: Separate two usages of netdev_max_backlog.	2005-06-23 20:14:40 -07:00
sysdev.h
sysfs.h
sysrq.h
sysv_fs.h
tcp_diag.h	[TCP]: Report congestion control algorithm in tcp_diag.	2005-06-23 12:21:28 -07:00
tcp.h	[TCP]: Allow choosing TCP congestion control via sockopt.	2005-06-23 20:37:36 -07:00
telephony.h
termios.h
textsearch_fsm.h	[LIB]: Naive finite state machine based textsearch	2005-06-23 20:59:16 -07:00
textsearch.h	[LIB]: Textsearch infrastructure.	2005-06-23 20:49:30 -07:00
thread_info.h
threads.h
ticable.h
time.h
timer.h	[PATCH] timers: introduce try_to_del_timer_sync()	2005-06-23 09:45:16 -07:00
times.h
timex.h
tiocl.h
topology.h	[PATCH] sched: sched tuning	2005-06-25 16:24:42 -07:00
toshiba.h
transport_class.h
trdevice.h
tty_driver.h
tty_flip.h
tty_ldisc.h
tty.h	[PATCH] Introduce tty_unregister_ldisc()	2005-06-23 09:45:35 -07:00
types.h
udf_fs_i.h
udf_fs_sb.h
udf_fs.h
udp.h
ufs_fs_i.h
ufs_fs_sb.h
ufs_fs.h
uinput.h
uio.h
ultrasound.h
umem.h
un.h
unistd.h
usb_cdc.h
usb_ch9.h
usb_gadget.h
usb_gadgetfs.h
usb_otg.h
usb_sl811.h
usb.h	[PATCH] better USB_MON dependencies	2005-06-23 10:04:15 -07:00
usbdevice_fs.h
user.h
utime.h
uts.h
utsname.h
vermagic.h
vfs.h
via.h
video_decoder.h
video_encoder.h
videodev2.h
videodev.h
videotext.h
vmalloc.h
vt_buffer.h
vt_kern.h
vt.h
wait.h	[PATCH] aio: make wait_queue ->task ->private	2005-06-23 09:45:34 -07:00
wanpipe.h
wanrouter.h
watchdog.h
wavefront.h
wireless.h
workqueue.h
writeback.h
x25.h	[X25]: Fast select with no restriction on response	2005-06-22 22:16:17 -07:00
xattr_acl.h
xattr.h
xfrm.h
yam.h
zconf.h
zftape.h
zlib.h
zorro_ids.h
zorro.h
zutil.h