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d0aa7a70bf
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Pierre Peiffer d0aa7a70bf futex_requeue_pi optimization 
This patch provides the futex_requeue_pi functionality, which allows some
threads waiting on a normal futex to be requeued on the wait-queue of a
PI-futex.

This provides an optimization, already used for (normal) futexes, to be used
with the PI-futexes.

This optimization is currently used by the glibc in pthread_broadcast, when
using "normal" mutexes.  With futex_requeue_pi, it can be used with
PRIO_INHERIT mutexes too.

Signed-off-by: Pierre Peiffer <pierre.peiffer@bull.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:55 -07:00
..
acpi PNPACPI sets pnpdev->dev.archdata 2007-05-08 11:15:08 -07:00
asm-alpha Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
asm-arm Use common cpu_is_xxx() macros on AT91 and AVR32 2007-05-09 12:30:50 -07:00
asm-arm26 Remove tas() 2007-05-08 11:15:20 -07:00
asm-avr32 Use common cpu_is_xxx() macros on AT91 and AVR32 2007-05-09 12:30:50 -07:00
asm-blackfin Remove tas() 2007-05-08 11:15:20 -07:00
asm-cris move die notifier handling to common code 2007-05-08 11:15:04 -07:00
asm-frv FRV: Replace pgd management via slabs through quicklists 2007-05-09 12:30:46 -07:00
asm-generic local_t: architecture independent extension 2007-05-08 11:15:20 -07:00
asm-h8300 Remove tas() 2007-05-08 11:15:20 -07:00
asm-i386 Use the APIC to determine the hardware processor id - i386 2007-05-09 12:30:48 -07:00
asm-ia64 Always ask the hardware to obtain hardware processor id - ia64 2007-05-09 12:30:49 -07:00
asm-m32r Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
asm-m68k m68k: <asm/scatterlist.h> needs <linux/types.h> 2007-05-08 20:41:14 -07:00
asm-m68knommu Remove tas() 2007-05-08 11:15:20 -07:00
asm-mips Remove tas() 2007-05-08 11:15:20 -07:00
asm-parisc local_t: parisc cleanup 2007-05-08 11:15:20 -07:00
asm-powerpc Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
asm-ppc Remove tas() 2007-05-08 11:15:20 -07:00
asm-s390 Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
asm-sh Remove tas() 2007-05-08 11:15:20 -07:00
asm-sh64 Remove tas() 2007-05-08 11:15:20 -07:00
asm-sparc Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
asm-sparc64 Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
asm-um Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
asm-v850 Remove tas() 2007-05-08 11:15:20 -07:00
asm-x86_64 Use the APIC to determine the hardware processor id - x86_64 2007-05-09 12:30:48 -07:00
asm-xtensa Remove tas() 2007-05-08 11:15:20 -07:00
crypto [CRYPTO] cryptd: Add software async crypto daemon 2007-05-02 14:38:32 +10:00
keys [AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both 2007-04-26 15:48:28 -07:00
linux futex_requeue_pi optimization 2007-05-09 12:30:55 -07:00
math-emu Delete unused header file math-emu/extended.h 2007-05-08 11:15:05 -07:00
media i2c: Cleanup the includes of <linux/i2c.h> 2007-05-01 23:26:29 +02:00
mtd UBI: Unsorted Block Images 2007-04-27 14:23:33 +03:00
net cleanup compat ioctl handling 2007-05-08 11:15:09 -07:00
pcmcia add new_id to PCMCIA drivers 2007-05-07 12:12:50 -07:00
rdma Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband 2007-05-07 12:18:21 -07:00
rxrpc [AF_RXRPC]: Delete the old RxRPC code. 2007-04-26 15:55:48 -07:00
scsi [SCSI] sas_scsi_host: Convert to use the kthread API 2007-05-06 09:33:17 -05:00
sound [ALSA] version 1.0.14rc3 2007-03-14 08:25:52 +01:00
video atyfb: halve XCLK with Mobility and 32bit memory 2007-05-08 11:15:32 -07:00
Kbuild