kernel.git/arch/mips/kernel/smp.c, branch linux-2.6.30.y

MIPS: Make a needlessly global symbol static in arch/mips/kernel/smp.c

2009-03-30T12:49:45Z

The variable cpu_callin_map is needlessly defined global, so let's make it static now. Build-tested using malta_defconfig. Signed-off-by: Dmitri Vorobiev Signed-off-by: Ralf Baechle

cpumask: centralize cpu_online_map and cpu_possible_map

2008-12-13T10:49:41Z

Impact: cleanup Each SMP arch defines these themselves. Move them to a central location. Twists: 1) Some archs (m32, parisc, s390) set possible_map to all 1, so we add a CONFIG_INIT_ALL_POSSIBLE for this rather than break them. 2) mips and sparc32 '#define cpu_possible_map phys_cpu_present_map'. Those archs simply have phys_cpu_present_map replaced everywhere. 3) Alpha defined cpu_possible_map to cpu_present_map; this is tricky so I just manipulate them both in sync. 4) IA64, cris and m32r have gratuitous 'extern cpumask_t cpu_possible_map' declarations. Signed-off-by: Rusty Russell Reviewed-by: Grant Grundler Tested-by: Tony Luck Acked-by: Ingo Molnar Cc: Mike Travis Cc: ink@jurassic.park.msu.ru Cc: rmk@arm.linux.org.uk Cc: starvik@axis.com Cc: tony.luck@intel.com Cc: takata@linux-m32r.org Cc: ralf@linux-mips.org Cc: grundler@parisc-linux.org Cc: paulus@samba.org Cc: schwidefsky@de.ibm.com Cc: lethal@linux-sh.org Cc: wli@holomorphy.com Cc: davem@davemloft.net Cc: jdike@addtoit.com Cc: mingo@redhat.com

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

2008-10-30T14:44:33Z

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.

2008-10-27T16:18:26Z

Noticed by Anirban Sinha ; patch by me. Signed-off-by: Ralf Baechle

kernel/cpu.c: create a CPU_STARTING cpu_chain notifier

2008-09-08T17:25:24Z

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

2008-06-26T09:24:38Z

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

2008-06-26T09:24:35Z

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

2008-06-26T09:22:57Z

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.

2008-06-16T14:14:47Z

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

[MIPS] fix warning message on SMP kernels

2008-05-12T15:46:56Z

This patch fixes a (harmless) warning message. Signed-off-by: Thiemo Seufer Signed-off-by: Ralf Baechle