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android_kernel_motorola_sm6225/arch/sparc64/kernel
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Fenghua Yu 5fb7dc37dc define new percpu interface for shared data 
per cpu data section contains two types of data.  One set which is
exclusively accessed by the local cpu and the other set which is per cpu,
but also shared by remote cpus.  In the current kernel, these two sets are
not clearely separated out.  This can potentially cause the same data
cacheline shared between the two sets of data, which will result in
unnecessary bouncing of the cacheline between cpus.

One way to fix the problem is to cacheline align the remotely accessed per
cpu data, both at the beginning and at the end.  Because of the padding at
both ends, this will likely cause some memory wastage and also the
interface to achieve this is not clean.

This patch:

Moves the remotely accessed per cpu data (which is currently marked
as ____cacheline_aligned_in_smp) into a different section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:44 -07:00
..
asm-offsets.c kbuild: frv,m32r,sparc64 introduce fake asm-offsets.h file 2005-09-09 22:47:53 +02:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
auxio.c Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
binfmt_aout32.c [PATCH] struct path: convert sparc64 2006-12-08 08:28:50 -08:00
binfmt_elf32.c [PATCH] elf: Always define elf_addr_t in linux/elf.h 2006-12-07 08:39:38 -08:00
central.c [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/console.c 2007-05-07 00:00:37 -07:00
chmc.c [SPARC64]: constify of_get_property return: arch/sparc64 2007-04-26 01:54:24 -07:00
compat_audit.c [PATCH] add SIGNAL syscall class (v3) 2007-05-11 05:38:25 -04:00
cpu.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ds.c [SPARC64]: Handle LDC resets properly in domain-services driver. 2007-07-18 01:20:09 -07:00
dtlb_miss.S [SPARC64]: More TLB/TSB handling fixes. 2006-03-20 01:13:34 -08:00
dtlb_prot.S [SPARC64]: Fix boot failures on SunBlade-150 2005-10-12 12:22:46 -07:00
ebus.c [SPARC64]: Kill asm-sparc64/pbm.h 2007-05-08 16:43:08 -07:00
entry.S [SPARC64]: Fix args to sun4v_ldc_revoke(). 2007-06-13 00:01:27 -07:00
etrap.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head.S [SPARC64]: Fix two bugs wrt. kernel 4MB TSB. 2007-05-29 02:51:38 -07:00
hvapi.c [SPARC64]: Report proper system soft state to the hypervisor. 2007-05-29 02:49:29 -07:00
hvtramp.S [SPARC64]: Kill explicit %gl register reference. 2007-07-17 12:18:15 -07:00
idprom.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
iommu_common.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
iommu_common.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.c [SPARC64]: dr-cpu unconfigure support. 2007-07-16 04:05:32 -07:00
isa.c [SPARC64] isa: Convert to use pci_device_to_OF_node(). 2007-04-26 01:55:05 -07:00
itlb_miss.S [SPARC64]: Fix _PAGE_EXEC_4U check in sun4u I-TLB miss handler. 2007-05-29 02:50:15 -07:00
kprobes.c [SPARC64]: Optimize fault kprobe handling just like powerpc. 2007-05-08 18:25:14 -07:00
ktlb.S [SPARC64]: Get DEBUG_PAGEALLOC working again. 2007-03-16 17:20:28 -07:00
ldc.c [SPARC64]: Abstract out mdesc accesses for better MD update handling. 2007-07-16 04:04:28 -07:00
Makefile [SPARC64]: Fix build regressions added by dr-cpu changes. 2007-07-16 04:04:49 -07:00
mdesc.c [SPARC64]: Add basic infrastructure for MD add/remove notification. 2007-07-18 01:19:51 -07:00
module.c [SPARC]: Handle UNWIND_INFO properly. 2006-05-12 12:45:50 -07:00
of_device.c [SPARC64]: Handle PCI bridges without 'ranges' property. 2007-06-07 21:59:44 -07:00
pci.c PCI: read revision ID by default 2007-07-11 16:02:09 -07:00
pci_common.c [SPARC64]: Fix IO/MEM space sizing for PCI. 2007-06-13 00:01:19 -07:00
pci_fire.c [SPARC64]: Correct FIRE_IOMMU_FLUSHINV register offset. 2007-05-11 21:39:26 -07:00
pci_impl.h [SPARC64] PCI: Consolidate PCI access code into pci_common.c 2007-05-09 02:35:27 -07:00
pci_iommu.c [SPARC64]: Spelling fixes. 2007-05-11 21:39:21 -07:00
pci_psycho.c [SPARC64] PCI: Consolidate PCI access code into pci_common.c 2007-05-09 02:35:27 -07:00
pci_sabre.c [SPARC64]: Fix 2 bugs in PCI Sabre bus scanning. 2007-06-07 16:59:46 -07:00
pci_schizo.c [SPARC64] PCI: Consolidate PCI access code into pci_common.c 2007-05-09 02:35:27 -07:00
pci_sun4v.c [SPARC64]: Negotiate hypervisor API for PCI services. 2007-05-29 02:49:34 -07:00
pci_sun4v.h [SPARC64]: Add PCI MSI support on Niagara. 2007-02-10 23:50:37 -08:00
pci_sun4v_asm.S [SPARC64]: Add PCI MSI support on Niagara. 2007-02-10 23:50:37 -08:00
power.c [SPARC64]: Export powerd facilities for external entities. 2007-07-16 04:04:16 -07:00
process.c [SPARC64]: dr-cpu unconfigure support. 2007-07-16 04:05:32 -07:00
prom.c [SPARC64]: Initial LDOM cpu hotplug support. 2007-07-16 04:04:40 -07:00
ptrace.c [SPARC{32,64}]: Propagate ptrace_traceme() return value. 2006-12-10 02:40:27 -08:00
rtrap.S [SPARC64]: Add irqtrace/stacktrace/lockdep support. 2006-12-10 02:39:09 -08:00
sbus.c [SPARC64]: Fix SBUS IRQ regression caused by PCI-E driver. 2007-06-07 16:59:51 -07:00
semaphore.c [SPARC64]: Avoid membar instructions in delay slots. 2005-06-27 15:42:04 -07:00
setup.c [SPARC64]: SMP build fix. 2007-07-16 17:11:58 -07:00
signal.c [SPARC64]: Kill bogus set_fs(KERNEL_DS) in do_rt_sigreturn(). 2007-07-17 14:37:54 -07:00
signal32.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
smp.c [SPARC64]: dr-cpu unconfigure support. 2007-07-16 04:05:32 -07:00
sparc64_ksyms.c [SPARC64]: More sensible udelay implementation. 2007-07-16 04:05:02 -07:00
sstate.c [SPARC64]: Report proper system soft state to the hypervisor. 2007-05-29 02:49:29 -07:00
stacktrace.c simplify the stacktrace code 2007-05-08 11:14:58 -07:00
starfire.c [SPARC64]: Kill starfire_cookie from SBUS/PCI. 2006-06-29 16:37:08 -07:00
sun4v_ivec.S [SPARC64]: Use machine description and OBP properly for cpu probing. 2007-05-29 02:49:41 -07:00
sun4v_tlb_miss.S [SPARC64]: Set g4/g5 properly in sun4v dtlb-prot handling. 2007-01-26 18:56:01 -08:00
sunos_ioctl32.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
sys32.S [SPARC64]: Fix arg passing to compat_sys_ipc(). 2007-04-13 13:27:08 -07:00
sys_sparc.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
sys_sparc32.c [SPARC]: Wire up utimensat syscall. 2007-05-08 17:50:14 -07:00
sys_sunos32.c [SPARC]: avoid CHILD_MAX and OPEN_MAX constants 2007-04-12 13:13:42 -07:00
sysfs.c [SPARC64]: More sensible udelay implementation. 2007-07-16 04:05:02 -07:00
systbls.S [SPARC]: Wire up signalfd/timerfd/eventfd syscalls. 2007-05-11 22:06:51 -07:00
time.c [SPARC64]: More sensible udelay implementation. 2007-07-16 04:05:02 -07:00
trampoline.S [SPARC64]: Get SUN4V SMP working. 2006-03-20 01:13:22 -08:00
traps.c Report that kernel is tainted if there was an OOPS 2007-07-17 10:23:02 -07:00
tsb.S [SPARC64]: store-init needs trailing membar. 2007-03-19 13:27:33 -07:00
ttable.S [SPARC64]: Unify timer interrupt handler. 2007-04-26 01:54:11 -07:00
una_asm.S [SPARC64]: Mark __ex_table section correctly. 2006-03-04 23:23:56 -08:00
unaligned.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
us2e_cpufreq.c [SPARC64]: kzalloc() conversion 2006-03-20 01:14:19 -08:00
us3_cpufreq.c [SPARC64]: kzalloc() conversion 2006-03-20 01:14:19 -08:00
vio.c [SPARC64]: Massively simplify VIO device layer and support hot add/remove. 2007-07-18 01:20:04 -07:00
viohs.c [SPARC64]: Set vio->desc_buf to NULL after freeing. 2007-07-18 01:20:26 -07:00
visemul.c [SPARC64]: Call do_mathemu on illegal instruction traps too. 2006-12-10 02:39:32 -08:00
vmlinux.lds.S define new percpu interface for shared data 2007-07-19 10:04:44 -07:00
winfixup.S [SPARC64]: Fix unaligned access winfxup handling on SUN4V. 2006-03-20 01:13:39 -08:00