]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[PATCH] smp_processor_id() cleanup
authorIngo Molnar <mingo@elte.hu>
Wed, 22 Jun 2005 00:14:34 +0000 (17:14 -0700)
committerLinus Torvalds <torvalds@ppc970.osdl.org>
Wed, 22 Jun 2005 01:46:13 +0000 (18:46 -0700)
commit39c715b71740c4a78ba4769fb54826929bac03cb
tree94dd679dfc8e6c2db65971739aa8c8c6206f8174
parent84929801e14d968caeb84795bfbb88f04283fbd9
[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>
37 files changed:
arch/i386/kernel/traps.c
arch/i386/lib/delay.c
arch/ppc/lib/locks.c
arch/ppc64/kernel/idle.c
arch/sh/lib/delay.c
arch/sparc64/lib/delay.c
arch/x86_64/lib/delay.c
drivers/acpi/processor_idle.c
drivers/input/gameport/gameport.c
drivers/oprofile/buffer_sync.c
fs/xfs/linux-2.6/xfs_linux.h
include/asm-alpha/smp.h
include/asm-arm/smp.h
include/asm-i386/smp.h
include/asm-ia64/smp.h
include/asm-m32r/smp.h
include/asm-mips/smp.h
include/asm-parisc/smp.h
include/asm-ppc/smp.h
include/asm-ppc64/smp.h
include/asm-s390/smp.h
include/asm-sh/smp.h
include/asm-sparc/smp.h
include/asm-sparc64/smp.h
include/asm-um/smp.h
include/asm-x86_64/smp.h
include/linux/mmzone.h
include/linux/smp.h
include/net/route.h
include/net/snmp.h
kernel/module.c
kernel/power/smp.c
kernel/sched.c
kernel/stop_machine.c
lib/Makefile
lib/kernel_lock.c
lib/smp_processor_id.c [new file with mode: 0644]