linux-stable.git/arch/mips/kernel/smp.c, branch linux-2.6.28.y

MIPS: SMP: Do not initialize __cpu_number_map/__cpu_logical_map for CPU 0.

2008-10-30T14:44:33+00:00

A system isn't necessarily booted on physical processor 0 as this code
assumes.  Also the array happens to be allocated in .bss so it's zero
initialized anyway.  Systems which need to override this can do so in
their mp_ops->smp_setup() method.

Signed-off-by: Ralf Baechle

MIPS: SMP: Don't reenable interrupts in stop_this_cpu; use WAIT instruction.

2008-10-27T16:18:26+00:00

Noticed by Anirban Sinha ; patch by me.

Signed-off-by: Ralf Baechle

kernel/cpu.c: create a CPU_STARTING cpu_chain notifier

2008-09-08T17:25:24+00:00

Right now, there is no notifier that is called on a new cpu, before the new
cpu begins processing interrupts/softirqs.
Various kernel function would need that notification, e.g. kvm works around
by calling smp_call_function_single(), rcu polls cpu_online_map.

The patch adds a CPU_STARTING notification. It also adds a helper function
that sends the message to all cpu_chain handlers.

Tested on x86-64.
All other archs are untested. Especially on sparc, I'm not sure if I got
it right.

Signed-off-by: Manfred Spraul 
Signed-off-by: Ingo Molnar

on_each_cpu(): kill unused 'retry' parameter

2008-06-26T09:24:38+00:00

It's not even passed on to smp_call_function() anymore, since that
was removed. So kill it.

Acked-by: Jeremy Fitzhardinge 
Reviewed-by: Paul E. McKenney 
Signed-off-by: Jens Axboe

smp_call_function: get rid of the unused nonatomic/retry argument

2008-06-26T09:24:35+00:00

It's never used and the comments refer to nonatomic and retry
interchangably. So get rid of it.

Acked-by: Jeremy Fitzhardinge 
Signed-off-by: Jens Axboe

mips: convert to generic helpers for IPI function calls

2008-06-26T09:22:57+00:00

This converts mips to use the new helpers for smp_call_function() and
friends, and adds support for smp_call_function_single(). Not tested,
but it compiles.

mips shares the same IPI for smp_call_function() and
smp_call_function_single(), since not all mips platforms have enough
available IPIs to support seperate setups.

Cc: Ralf Baechle 
Signed-off-by: Jens Axboe

[MIPS] Export smp_call_function and smp_call_function_single.

2008-06-16T14:14:47+00:00

Signed-off-by: Chris Dearman 
Signed-off-by: Ralf Baechle

[MIPS] fix warning message on SMP kernels

2008-05-12T15:46:56+00:00

This patch fixes a (harmless) warning message.

Signed-off-by: Thiemo Seufer 
Signed-off-by: Ralf Baechle

[MIPS] Add support for MIPS CMP platform.

2008-04-28T16:14:26+00:00

Signed-off-by: Chris Dearman 
Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

calibrate_delay() must be __cpuinit

2008-02-06T18:41:08+00:00

calibrate_delay() must be __cpuinit, not __{dev,}init.

I've verified that this is correct for all users.

While doing the latter, I also did the following cleanups:
- remove pointless additional prototypes in C files
- ensure all users #include 

This fixes the following section mismatches with CONFIG_HOTPLUG=n,
CONFIG_HOTPLUG_CPU=y:

WARNING: vmlinux.o(.text+0x1128d): Section mismatch: reference to .init.text.1:calibrate_delay (between 'check_cx686_slop' and 'set_cx86_reorder')
WARNING: vmlinux.o(.text+0x25102): Section mismatch: reference to .init.text.1:calibrate_delay (between 'smp_callin' and 'cpu_coregroup_map')

Signed-off-by: Adrian Bunk 
Cc: Ivan Kokshaysky 
Cc: Richard Henderson 
Cc: "Luck, Tony" 
Cc: Ralf Baechle 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Cc: "David S. Miller" 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: Christian Zankel 
Cc: Heiko Carstens 
Cc: Martin Schwidefsky 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds