tmp_suning_uos_patched/arch
Paul Walmsley 64ce2907b1 ARM: OMAP2: skip unnecessary TLDR write during non-autoreload for gptimer
The GPTIMER TLDR register does not need to be written if the GPTIMER
is not in autoreload mode.  This is the usual case for dynamic tick-enabled
kernels.

Simulation data indicate that skipping the read that occurs as part of
the write should save at least 300-320 ns for each GPTIMER1 timer
reprogram.  (This assumes L4-Wakeup is at 19MHz and GPTIMER write
posting is enabled.)  Skipping the write itself probably won't have
much impact since it should be posted on the OCP interconnect.

Tested on 2430SDP and 3430SDP.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-12-10 17:36:34 -08:00
..
alpha alpha: pcibios_resource_to_bus() is callable from normal code 2008-11-30 10:03:37 -08:00
arm ARM: OMAP2: skip unnecessary TLDR write during non-autoreload for gptimer 2008-12-10 17:36:34 -08:00
avr32
blackfin Blackfin arch: fix a broken define in dma-mapping 2008-11-18 17:48:22 +08:00
cris [CRIS] Remove links from CRIS build 2008-10-31 23:37:57 +01:00
frv frv: fix mmap2 error handling 2008-12-01 19:55:24 -08:00
h8300
ia64 [IA64] SN: prevent IRQ retargetting in request_irq() 2008-12-09 10:57:18 -08:00
m32r m32r: section noise in head.S 2008-11-30 10:03:37 -08:00
m68k m68k: Update defconfigs for 2.6.28-rc7 2008-12-02 20:58:26 +01:00
m68knommu
mips Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2008-12-10 10:03:55 -08:00
mn10300 MN10300: Give correct size when reserving interrupt vector table 2008-12-10 13:34:33 -08:00
parisc Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 2008-11-30 14:04:31 -08:00
powerpc Merge branch 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge 2008-12-09 14:58:37 +11:00
s390 Merge branch 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm 2008-12-02 15:56:17 -08:00
sh serial: sh-sci: Reorder the SCxTDR write after the TDxE clear. 2008-11-13 17:46:06 +09:00
sparc sparc: asm/bitops.h should define __fls 2008-12-03 16:04:52 -08:00
sparc64 sparc64: Sync FPU state in VIS emulation handler. 2008-12-04 09:12:57 -08:00
um uml: boot broken due to buffer overrun 2008-12-10 08:01:52 -08:00
x86 x86: fix default_spin_lock_flags() prototype 2008-12-08 16:08:29 +01:00
xtensa
.gitignore
Kconfig remove __ARCH_WANT_COMPAT_SYS_PTRACE 2008-11-30 11:00:15 -08:00