kernel-ark/arch
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
..
alpha
arm
arm26
cris
frv
h8300
i386 [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
ia64
m32r
m68k
m68knommu
mips
parisc
ppc [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
ppc64 [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
s390
sh [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
sh64
sparc
sparc64 [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
um
v850
x86_64 [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00