linux-toradex.git/arch/parisc/kernel/smp.c, branch v4.2.7

parisc: Remove unused function

2015-02-17T09:41:19+00:00

Remove the function smp_send_start() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist 
Signed-off-by: Helge Deller

parisc: do not count IPI calls twice

2013-11-07T21:28:54+00:00

The number of IPI calls is already visible as per-cpu IPI irq counters
in/proc/cpuinfo, so let's drop this additional counting.

This partly reverts:
cd85d55 parisc: more irq statistics in /proc/interrupts

Signed-off-by: Helge Deller

parisc: kill SMP single function call interrupt

2013-10-13T15:44:29+00:00

Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.

Signed-off-by: Jiang Liu 
Cc: Jiang Liu 
Signed-off-by: Helge Deller

parisc: delete __cpuinit usage from all users

2013-07-14T23:36:51+00:00

The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications.  For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.

After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out.  Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.

This removes all the parisc uses of the __cpuinit macros.

[1] https://lkml.org/lkml/2013/5/20/589

Acked-by: James Bottomley 
Cc: Helge Deller 
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Paul Gortmaker

parisc: tlb flush counting fix for SMP and UP

2013-05-07T21:44:04+00:00

Fix up build error on UP and show correctly number of function call
(ipi) irqs.

Signed-off-by: Helge Deller

parisc: more irq statistics in /proc/interrupts

2013-05-07T20:39:22+00:00

Add framework and initial values for more fine grained statistics in
/proc/interrupts.

Signed-off-by: Helge Deller

parisc: Use generic idle loop

2013-04-08T15:39:27+00:00

Signed-off-by: Thomas Gleixner 
Cc: Linus Torvalds 
Cc: Rusty Russell 
Cc: Paul McKenney 
Cc: Peter Zijlstra 
Reviewed-by: Cc: Srivatsa S. Bhat 
Cc: Magnus Damm 
Cc: James E.J. Bottomley 
Cc: Helge Deller 
Link: http://lkml.kernel.org/r/20130321215234.956305981@linutronix.de
Signed-off-by: Thomas Gleixner

parisc: Smp: remove call to ipi_call_lock()/ipi_call_unlock()

2012-06-05T15:27:12+00:00

ipi_call_lock/unlock() lock resp. unlock call_function.lock. This lock
protects only the call_function data structure itself, but it's
completely unrelated to cpu_online_mask. The mask to which the IPIs
are sent is calculated before call_function.lock is taken in
smp_call_function_many(), so the locking around set_cpu_online() is
pointless and can be removed.

[ tglx: Massaged changelog ]

Signed-off-by: Yong Zhang 
Cc: ralf@linux-mips.org
Cc: sshtylyov@mvista.com
Cc: david.daney@cavium.com
Cc: nikunj@linux.vnet.ibm.com
Cc: paulmck@linux.vnet.ibm.com
Cc: axboe@kernel.dk
Cc: peterz@infradead.org
Cc: James E.J. Bottomley 
Cc: Helge Deller 
Cc: linux-parisc@vger.kernel.org
Link: http://lkml.kernel.org/r/1338275765-3217-4-git-send-email-yong.zhang0@gmail.com
Acked-by: Srivatsa S. Bhat 
Acked-by: Peter Zijlstra 
Signed-off-by: Thomas Gleixner

Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-22T02:43:57+00:00

Pull smp hotplug cleanups from Thomas Gleixner:
 "This series is merily a cleanup of code copied around in arch/* and
  not changing any of the real cpu hotplug horrors yet.  I wish I'd had
  something more substantial for 3.5, but I underestimated the lurking
  horror..."

Fix up trivial conflicts in arch/{arm,sparc,x86}/Kconfig and
arch/sparc/include/asm/thread_info_32.h

* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (79 commits)
  um: Remove leftover declaration of alloc_task_struct_node()
  task_allocator: Use config switches instead of magic defines
  sparc: Use common threadinfo allocator
  score: Use common threadinfo allocator
  sh-use-common-threadinfo-allocator
  mn10300: Use common threadinfo allocator
  powerpc: Use common threadinfo allocator
  mips: Use common threadinfo allocator
  hexagon: Use common threadinfo allocator
  m32r: Use common threadinfo allocator
  frv: Use common threadinfo allocator
  cris: Use common threadinfo allocator
  x86: Use common threadinfo allocator
  c6x: Use common threadinfo allocator
  fork: Provide kmemcache based thread_info allocator
  tile: Use common threadinfo allocator
  fork: Provide weak arch_release_[task_struct|thread_info] functions
  fork: Move thread info gfp flags to header
  fork: Remove the weak insanity
  sh: Remove cpu_idle_wait()
  ...

parisc/CPU hotplug: Add missing call to notify_cpu_starting()

2012-05-16T01:16:57+00:00

The scheduler depends on receiving the CPU_STARTING notification, without
which we end up into a lot of trouble. So add the missing call to
notify_cpu_starting() in the bringup code.

Signed-off-by: Srivatsa S. Bhat 
Acked-and-Tested-by: Mikulas Patocka 
Acked-and-Tested-by: Tobias Ulmer 
Tested-by: John David Anglin 
Signed-off-by: Linus Torvalds