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Andrew Morton 7a8ef1cb77 [PATCH] x86: don't initialise cpu_possible_map to all ones 
Initialising cpu_possible_map to all-ones with CONFIG_HOTPLUG_CPU means that

a) All for_each_cpu() loops will iterate across all NR_CPUS CPUs, rather
   than over possible ones.  That can be quite expensive.

b) Soon we'll be allocating per-cpu areas only for possible CPUs.  So with
   CPU_MASK_ALL, we'll be wasting memory.

I also switched voyager over to not use CPU_MASK_ALL in the non-CPU-hotplug
case.  Should be OK..

I note that parisc is also using CPU_MASK_ALL.  Suggest that it stop doing
that.

Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Paul Jackson <pj@sgi.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Zwane Mwaikambo <zwane@linuxpower.ca>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-10 08:13:12 -08:00
..
alpha [PATCH] alpha: set cpu_possible_map much earlier 2006-02-08 07:57:37 -08:00
arm Merge master.kernel.org:/home/rmk/linux-2.6-serial 2006-02-08 15:21:22 -08:00
arm26 [PATCH] arm26: select BLK_DEV_FD only on A5K 2006-02-01 08:53:22 -08:00
cris [PATCH] fallout from ptrace consolidation patch: cris/arch-v10 2006-02-07 20:57:19 -05:00
frv [PATCH] Handle TIF_RESTORE_SIGMASK for FRV 2006-01-18 19:20:29 -08:00
h8300 [PATCH] h8300: task_stack_page() 2006-01-12 09:08:55 -08:00
i386 [PATCH] x86: don't initialise cpu_possible_map to all ones 2006-02-10 08:13:12 -08:00
ia64 Pull new-syscalls into release branch 2006-02-09 14:43:58 -08:00
m32r [PATCH] drive_info removal outside of arch/i386 2006-02-07 20:56:47 -05:00
m68k [PATCH] m68k: console code in head.S needs framebuffer support built in 2006-01-12 09:09:06 -08:00
m68knommu [PATCH] m68knommu: need pm_power_off in m68knommu 2006-02-07 16:16:53 -08:00
mips Merge master.kernel.org:/home/rmk/linux-2.6-serial 2006-02-08 15:21:22 -08:00
parisc [PATCH] sys_hpux: fix strlen_user() race 2006-02-07 16:12:33 -08:00
powerpc [PATCH] Fix building external modules on ppc32 2006-02-10 08:13:12 -08:00
ppc Merge master.kernel.org:/home/rmk/linux-2.6-serial 2006-02-08 15:21:22 -08:00
s390 [PATCH] s390 misc __user annotations 2006-02-08 01:04:23 -05:00
sh [PATCH] sh: lvalues abuse in arch/sh/boards/renesas/rts7751r2d/io.c 2006-02-08 01:06:09 -05:00
sh64 [PATCH] drive_info removal outside of arch/i386 2006-02-07 20:56:47 -05:00
sparc Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 2006-02-07 20:34:29 -08:00
sparc64 [SPARC64]: Fix sys_newfstatat syscall table entry for 64-bit. 2006-02-09 15:09:15 -08:00
um [PATCH] uml: remove a dead file 2006-02-07 16:12:32 -08:00
v850 [PATCH] Fix some ucLinux breakage from the tty updates 2006-02-03 08:32:04 -08:00
x86_64 [PATCH] x86-64: Add sys_unshare 2006-02-08 15:52:15 -08:00
xtensa [PATCH] Fix some ucLinux breakage from the tty updates 2006-02-03 08:32:04 -08:00