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Ingo Molnar 39c715b717 [PATCH] smp_processor_id() cleanup 
This patch implements a number of smp_processor_id() cleanup ideas that
Arjan van de Ven and I came up with.

The previous __smp_processor_id/_smp_processor_id/smp_processor_id API
spaghetti was hard to follow both on the implementational and on the
usage side.

Some of the complexity arose from picking wrong names, some of the
complexity comes from the fact that not all architectures defined
__smp_processor_id.

In the new code, there are two externally visible symbols:

 - smp_processor_id(): debug variant.

 - raw_smp_processor_id(): nondebug variant. Replaces all existing
   uses of _smp_processor_id() and __smp_processor_id(). Defined
   by every SMP architecture in include/asm-*/smp.h.

There is one new internal symbol, dependent on DEBUG_PREEMPT:

 - debug_smp_processor_id(): internal debug variant, mapped to
                             smp_processor_id().

Also, i moved debug_smp_processor_id() from lib/kernel_lock.c into a new
lib/smp_processor_id.c file.  All related comments got updated and/or
clarified.

I have build/boot tested the following 8 .config combinations on x86:

 {SMP,UP} x {PREEMPT,!PREEMPT} x {DEBUG_PREEMPT,!DEBUG_PREEMPT}

I have also build/boot tested x64 on UP/PREEMPT/DEBUG_PREEMPT.  (Other
architectures are untested, but should work just fine.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:13 -07:00
..
arc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cobalt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ddb5xxx Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dec Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
galileo-boards Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gcc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hp-lj Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ip32 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
it8172 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
jmr3927 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
lasat Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-atlas Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-au1x00 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-db1x00 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ddb5074 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-dec Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ev64120 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ev96100 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-generic Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ip22 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ip27 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ip32 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ja Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-jazz Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-jmr3927/asm Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-lasat Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-mips Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ocelot Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ocelot3 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-pb1x00 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-rm200 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-sibyte Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-vr41xx Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-yosemite Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mips-boards Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sgi Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sibyte Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sn Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tx4927 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vr41xx [PATCH] freepgt: arch FIRST_USER_ADDRESS 0 2005-04-19 13:29:23 -07:00
vr4181 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xtalk Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
8253pit.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
a.out.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
addrspace.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
asm.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
asmmacro-32.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
asmmacro-64.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
asmmacro.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
atomic.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bcache.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bitops.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bootinfo.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
branch.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
break.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bug.h [PATCH] remove all kernel BUGs 2005-05-01 08:59:01 -07:00
bugs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
byteorder.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cache.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cachectl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cacheflush.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cacheops.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
checksum.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
compat.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
compiler.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-features.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-info.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cputime.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
current.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ddb5074.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
debug.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
delay.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
div64.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dma-mapping.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dma.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ds1286.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
elf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
errno.h [PATCH] add EOWNERDEAD and ENOTRECOVERABLE version 2 2005-05-01 08:59:06 -07:00
fcntl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fixmap.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
floppy.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fpregdef.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fpu_emulator.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gdb-stub.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gfx.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gt64120.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gt64240.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hardirq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hazards.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hdreg.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
highmem.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hw_irq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
i8259.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ide.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
inst.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
interrupt.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
inventory.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
io.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctls.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipcbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq_cpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
isadep.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
it8712.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
jazz.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
jazzdma.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kmap_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linkage.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
local.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
m48t35.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
m48t37.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
marvell.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mc146818-time.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mc146818rtc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mipsprom.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mipsregs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mman.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmu_context.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmzone.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
msc01_ic.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
msgbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
namei.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nile4.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
numnodes.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
paccess.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
page.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
param.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
parport.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
percpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgalloc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgtable-32.h [PATCH] freepgt: arch FIRST_USER_ADDRESS 0 2005-04-19 13:29:23 -07:00
pgtable-64.h [PATCH] freepgt: arch FIRST_USER_ADDRESS 0 2005-04-19 13:29:23 -07:00
pgtable-bits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgtable.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pmon.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
poll.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
posix_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
prctl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
prefetch.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
processor.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ptrace.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
r4kcache.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
reboot.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
reg.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
regdef.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
resource.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
riscos-syscall.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rtc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
scatterlist.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sections.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
segment.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sembuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
serial.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sgialib.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sgiarcs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sgidefs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmparam.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sigcontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
siginfo.h [PATCH] consolidate SIGEV_PAD_SIZE 2005-05-01 08:59:08 -07:00
signal.h [PATCH] asm/signal.h unification 2005-05-04 07:33:15 -07:00
sim.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smp.h [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
sni.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
socket.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sockios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlock.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
stackframe.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
stat.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
statfs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
string.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
suspend.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sysmips.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
system.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
termbits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
termios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
thread_info.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
time.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
timex.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
titan_dep.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlbdebug.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlbflush.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
topology.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tx3912.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
uaccess.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ucontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unaligned.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unistd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
user.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vga.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
war.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
watch.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
wbflush.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xor.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xxs1500.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00