aha/arch
Martin Schwidefsky 3c5d92a0cf nohz: Introduce arch_needs_cpu
Allow the architecture to request a normal jiffy tick when the system
goes idle and tick_nohz_stop_sched_tick is called . On s390 the hook is
used to prevent the system going fully idle if there has been an
interrupt other than a clock comparator interrupt since the last wakeup.

On s390 the HiperSockets response time for 1 connection ping-pong goes
down from 42 to 34 microseconds. The CPU cost decreases by 27%.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <20090929122533.402715150@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-11-05 07:53:53 +01:00
..
alpha alpha: Fix duplicate <asm/thread_info.h> include 2009-09-27 14:46:05 -07:00
arm Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-10-02 16:20:43 -07:00
avr32 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next 2009-09-23 15:37:02 -07:00
blackfin const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
cris const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
frv FRV: Flash mappings for the MB93090-MB00 motherboard 2009-09-24 17:18:38 -07:00
h8300 h8300: Cleanup linker script using new linker script macros. 2009-09-24 17:16:22 -07:00
ia64 const: mark struct vm_struct_operations 2009-09-27 11:39:25 -07:00
m32r m32r: Fix IPI function calls for SMP 2009-10-04 12:02:37 +09:00
m68k revert "m68k: convert to asm-generic/hardirq.h" 2009-10-01 16:11:11 -07:00
m68knommu headers: utsname.h redux 2009-09-23 18:13:10 -07:00
microblaze Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze 2009-09-24 09:01:44 -07:00
mips MIPS: Avoid spurious make includecheck message 2009-09-30 21:47:02 +02:00
mn10300 mn10300: fix kernel build failures when using gcc-4.x 2009-10-01 16:11:12 -07:00
parisc parisc: Remove useless altinstructions code copied from x86. 2009-09-24 17:16:21 -07:00
powerpc const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
s390 nohz: Introduce arch_needs_cpu 2009-11-05 07:53:53 +01:00
score Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next 2009-09-23 15:37:02 -07:00
sh sh: Add support DMA Engine to SH7780 2009-09-25 12:19:33 +09:00
sparc sparc64: implement page mapping percpu first chunk allocator 2009-09-29 09:17:57 +09:00
um um: Clean up linker script using standard macros. 2009-09-24 17:16:22 -07:00
x86 x86: fix csum_ipv6_magic asm memory clobber 2009-10-01 16:11:12 -07:00
xtensa xtensa: Cleanup linker script using new linker script macros. 2009-09-24 17:16:21 -07:00
.gitignore
Kconfig oprofile: fix oprofile regression: select RING_BUFFER_ALLOW_SWAP 2009-09-17 15:53:42 -04:00