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69dcc99199
linux/include/asm-x86_64
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Zhang, Yanmin 69dcc99199 [PATCH] Export cpu topology in sysfs 
The patch implements cpu topology exportation by sysfs.

Items (attributes) are similar to /proc/cpuinfo.

1) /sys/devices/system/cpu/cpuX/topology/physical_package_id:
	represent the physical package id of  cpu X;
2) /sys/devices/system/cpu/cpuX/topology/core_id:
	represent the cpu core id to cpu X;
3) /sys/devices/system/cpu/cpuX/topology/thread_siblings:
	represent the thread siblings to cpu X in the same core;
4) /sys/devices/system/cpu/cpuX/topology/core_siblings:
	represent the thread siblings to cpu X in the same physical package;

To implement it in an architecture-neutral way, a new source file,
driver/base/topology.c, is to export the 5 attributes.

If one architecture wants to support this feature, it just needs to
implement 4 defines, typically in file include/asm-XXX/topology.h.
The 4 defines are:
#define topology_physical_package_id(cpu)
#define topology_core_id(cpu)
#define topology_thread_siblings(cpu)
#define topology_core_siblings(cpu)

The type of **_id is int.
The type of siblings is cpumask_t.

To be consistent on all architectures, the 4 attributes should have
deafult values if their values are unavailable. Below is the rule.

1) physical_package_id: If cpu has no physical package id, -1 is the
default value.

2) core_id: If cpu doesn't support multi-core, its core id is 0.

3) thread_siblings: Just include itself, if the cpu doesn't support
HT/multi-thread.

4) core_siblings: Just include itself, if the cpu doesn't support
multi-core and HT/Multi-thread.

So be careful when declaring the 4 defines in include/asm-XXX/topology.h.

If an attribute isn't defined on an architecture, it won't be exported.

Thank Nathan, Greg, Andi, Paul and Venki.

The patch provides defines for i386/x86_64/ia64.

Signed-off-by: Zhang, Yanmin <yanmin.zhang@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03 08:32:09 -08:00
..
8253pit.h
a.out.h [PATCH] x86_64: TASK_SIZE fixes for compatibility mode processes 2005-06-21 18:46:12 -07:00
acpi.h [ACPI] delete CONFIG_ACPI_PCI 2005-08-25 12:40:44 -04:00
agp.h
apic.h [PATCH] x86_64: Some housekeeping in local APIC code 2006-01-11 19:05:03 -08:00
apicdef.h [PATCH] x86_64: x86_64 write apic id fix 2006-01-11 19:04:57 -08:00
atomic.h [PATCH] EDAC: core EDAC support code 2006-01-18 19:20:31 -08:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h [PATCH] x86_64: fls in asm for x86_64 2006-01-11 19:04:50 -08:00
boot.h
bootsetup.h
bug.h [PATCH] x86-64: reduce x86-64 bug frame by 4 bytes 2005-09-12 10:50:58 -07:00
bugs.h
byteorder.h
cache.h [PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_align 2006-01-11 19:05:01 -08:00
cacheflush.h [PATCH] x86/x86_64: mark rodata section read-only: x86-64 support 2006-01-06 08:33:36 -08:00
calling.h [PATCH] x86-64: Fix CFI information 2005-09-12 10:50:56 -07:00
checksum.h [NET]: Fix ipl=>ihl typo in ip_fast_csum 2005-08-29 16:02:48 -07:00
compat.h [PATCH] amd64: task_pt_regs() 2006-01-12 09:08:51 -08:00
cpu.h
cpufeature.h [PATCH] x86_64: Remove unused AMD K8 C stepping flag 2006-01-11 19:05:02 -08:00
cputime.h
current.h kbuild: alpha,x86_64 use generic asm-offsets.h support 2005-09-09 21:28:48 +02:00
debugreg.h
delay.h
desc.h [PATCH] x86_64: Align and pad x86_64 GDT on page boundary 2006-01-11 19:04:53 -08:00
div64.h
dma-mapping.h [PATCH] x86_64: Use function pointers to call DMA mapping functions 2006-01-11 19:04:55 -08:00
dma.h [PATCH] x86_64: Add 4GB DMA32 zone 2005-11-14 19:55:13 -08:00
dwarf2.h [PATCH] x86_64: Separate CONFIG_UNWIND_INFO from CONFIG_DEBUG_INFO 2006-01-11 19:01:10 -08:00
e820.h [PATCH] kdump: x86_64: add memmmap command line option 2006-01-10 08:01:27 -08:00
edac.h [PATCH] EDAC: core EDAC support code 2006-01-18 19:20:31 -08:00
elf.h [PATCH] fix remaining missing includes 2005-11-07 07:53:41 -08:00
emergency-restart.h [PATCH] x86_64: Implemenent machine_emergency_restart 2005-07-26 14:35:42 -07:00
errno.h
fcntl.h [PATCH] Clean up struct flock definitions 2005-09-07 16:57:38 -07:00
fixmap.h [PATCH] mark several functions __always_inline 2006-01-14 18:27:15 -08:00
floppy.h
fpu32.h
futex.h [PATCH] FUTEX_WAKE_OP: pthread_cond_signal() speedup 2005-09-07 16:57:17 -07:00
gart-mapping.h [PATCH] x86_64: Use function pointers to call DMA mapping functions 2006-01-11 19:04:55 -08:00
genapic.h
hardirq.h [PATCH] x86-64: Some cleanup and optimization to the processor data area. 2005-09-12 10:49:58 -07:00
hpet.h [PATCH] x86_64: Adjust, correct, and complete the HPET definitions for x86-64. 2005-11-14 19:55:13 -08:00
hw_irq.h [PATCH] x86_64: Remove useless KDB vector 2006-01-11 19:05:00 -08:00
i387.h [PATCH] amd64: task_thread_info() 2006-01-12 09:08:51 -08:00
ia32_unistd.h [PATCH] prototypes for *at functions & typo fix 2006-02-01 08:53:09 -08:00
ia32.h [PATCH] x86_64: Flexmap for 32bit and randomized mappings for 64bit 2006-01-16 23:18:35 -08:00
ide.h
idle.h [PATCH] x86_64: Add idle notifiers 2006-01-11 19:04:55 -08:00
io_apic.h [ACPI] delete CONFIG_ACPI_BOOT 2005-08-24 12:08:54 -04:00
io.h [PATCH] x86_64: Generalize DMI and enable for x86-64 2006-01-11 19:04:51 -08:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h
ipcbuf.h
ipi.h [PATCH] x86_64: Remove useless KDB vector 2006-01-11 19:05:00 -08:00
irq.h [PATCH] x86_64: Increase NR_IRQ_VECTORS to 32 * NR_CPUS 2006-01-16 11:27:59 -08:00
kdebug.h [PATCH] x86_64: make trap information available to die notification handlers 2006-01-11 19:01:10 -08:00
kexec.h [PATCH] kdump: x86_64 save cpu registers upon crash 2006-01-10 08:01:28 -08:00
kmap_types.h
kprobes.h [PATCH] kprobes: fix build breakage 2006-01-10 08:01:40 -08:00
ldt.h
linkage.h
local.h [PATCH] x86-64: clean up local_add/sub arguments 2005-09-12 10:50:59 -07:00
mach_apic.h
mc146818rtc.h
mce.h [PATCH] x86_64: Support for AMD specific MCE Threshold. 2005-11-14 19:55:13 -08:00
mman.h [PATCH] madvise(MADV_REMOVE): remove pages from tmpfs shm backing store 2006-01-06 08:33:22 -08:00
mmsegment.h
mmu_context.h [PATCH] x86_64: cleanup enter_lazy_tlb() 2006-01-11 19:05:00 -08:00
mmu.h
mmx.h
mmzone.h [PATCH] x86_64: Move NUMA page_to_pfn/pfn_to_page functions out of line 2006-01-11 19:05:01 -08:00
module.h
mpspec.h Pull pnpacpi into acpica branch 2006-01-07 03:50:18 -05:00
msgbuf.h
msi.h [PATCH] PCI: Change MSI to use physical delivery mode always 2005-11-10 16:09:18 -08:00
msr.h [PATCH] Fix x86_64/msr.h interface to agree with i386/msr.h 2005-11-20 11:52:59 -08:00
mtrr.h [PATCH] Clean up mtrr compat ioctl code 2005-10-30 17:37:13 -08:00
mutex.h Fix mutex_trylock() copy-and-paste bug (x86, x86-64, generic mutex-dec.h) 2006-01-11 15:50:47 -08:00
namei.h
nmi.h
node.h
numa.h [PATCH] x86_64: Early initialization of cpu_to_node 2006-01-11 19:04:59 -08:00
numnodes.h
page.h [PATCH] x86_64: Allow nesting of int3 by default for kprobes 2006-01-16 11:27:58 -08:00
param.h [PATCH] Avoid namespace pollution in <asm/param.h> 2006-01-02 08:38:38 -08:00
parport.h
pci-direct.h
pci.h [PATCH] x86_64: Use function pointers to call DMA mapping functions 2006-01-11 19:04:55 -08:00
pda.h [PATCH] x86_64: Allocate PDAs in the local node 2006-01-11 19:04:59 -08:00
percpu.h [PATCH] x86_64: Node local pda take 2 -- cpu_pda preparation 2006-01-11 19:04:59 -08:00
pgalloc.h [PATCH] Replace extern inline with static inline in asm-x86_64/* 2005-09-12 10:50:56 -07:00
pgtable.h [PATCH] x86_64: "extern inline" -> "static inline" in pgtable.h 2006-01-11 19:04:53 -08:00
poll.h
posix_types.h
prctl.h
processor.h [PATCH] x86_64: Flexmap for 32bit and randomized mappings for 64bit 2006-01-16 23:18:35 -08:00
proto.h [PATCH] x86_64: Don't try to synchronize the TSC over CPUs on Intel CPUs at boot. 2006-01-11 19:04:57 -08:00
ptrace.h [PATCH] xen: x86: Rename usermode macro 2005-06-23 09:45:14 -07:00
resource.h
rtc.h
rwlock.h [PATCH] Fix typo in x86_64 __build_write_lock_const assembly 2005-12-24 12:30:22 -08:00
scatterlist.h
seccomp.h
sections.h
segment.h [PATCH] x86_64: Remove unused segments 2006-01-11 19:05:01 -08:00
semaphore.h [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
sembuf.h
serial.h [PATCH] Serial: Split 8250 port table (part 2) 2005-06-29 18:45:19 +01:00
setup.h
shmbuf.h
shmparam.h
sigcontext32.h
sigcontext.h
siginfo.h
signal.h [PATCH] Replace extern inline with static inline in asm-x86_64/* 2005-09-12 10:50:56 -07:00
smp.h [PATCH] x86_64: Fix compile error with !CONFIG_COMPAT 2006-01-11 19:04:57 -08:00
socket.h [NET]: Introduce SO_{SND,RCV}BUFFORCE socket options 2005-08-29 15:31:35 -07:00
sockios.h
sparsemem.h [PATCH] add x86-64 specific support for sparsemem 2005-06-23 09:45:07 -07:00
spinlock_types.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
spinlock.h [PATCH] x86_64: Use int operations in spinlocks to support more than 128 CPUs spinning. 2005-11-14 19:55:15 -08:00
stat.h
statfs.h
string.h
suspend.h [PATCH] swsusp: clean assembly parts 2005-06-25 16:24:33 -07:00
swiotlb.h [PATCH] x86_64: Use function pointers to call DMA mapping functions 2006-01-11 19:04:55 -08:00
system.h [PATCH] x86_64: Fix VSMP build 2006-01-16 23:18:35 -08:00
termbits.h
termios.h
thread_info.h [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
timex.h [PATCH] x86_64: On Intel CPUs don't do an additional CPU sync before RDTSC 2006-01-11 19:04:58 -08:00
tlb.h
tlbflush.h [PATCH] x86-64: Increase TLB flush array size 2005-09-12 10:49:58 -07:00
topology.h [PATCH] Export cpu topology in sysfs 2006-02-03 08:32:09 -08:00
types.h [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
uaccess.h [PATCH] mark several functions __always_inline 2006-01-14 18:27:15 -08:00
ucontext.h
unaligned.h
unistd.h [PATCH] vfs: *at functions: x86_64 2006-01-18 19:20:29 -08:00
user32.h
user.h
vga.h
vsyscall32.h
vsyscall.h [PATCH] x86_64: sparse warning cleanups 2006-01-11 19:05:02 -08:00
xor.h