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Commit bf67f3a5 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

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()
  ...
parents 226da0db 203dacbd

arch/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -145,6 +145,21 @@ config HAVE_DMA_ATTRS 
config USE_GENERIC_SMP_HELPERS

	bool



config GENERIC_SMP_IDLE_THREAD

       bool



# Select if arch init_task initializer is different to init/init_task.c

config ARCH_INIT_TASK

       bool



# Select if arch has its private alloc_task_struct() function

config ARCH_TASK_STRUCT_ALLOCATOR

	bool



# Select if arch has its private alloc_thread_info() function

config ARCH_THREAD_INFO_ALLOCATOR

	bool



config HAVE_REGS_AND_STACK_ACCESS_API

	bool

	help

arch/alpha/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ config ALPHA 
	select GENERIC_IRQ_SHOW

	select ARCH_WANT_OPTIONAL_GPIOLIB

	select ARCH_HAVE_NMI_SAFE_CMPXCHG

	select GENERIC_SMP_IDLE_THREAD

	help

	  The Alpha is a 64-bit general-purpose processor designed and

	  marketed by the Digital Equipment Corporation of blessed memory,

arch/alpha/kernel/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ extra-y := head.o vmlinux.lds 
asflags-y	:= $(KBUILD_CFLAGS)

ccflags-y	:= -Wno-sign-compare



obj-y    := entry.o traps.o process.o init_task.o osf_sys.o irq.o \

obj-y    := entry.o traps.o process.o osf_sys.o irq.o \

	    irq_alpha.o signal.o setup.o ptrace.o time.o \

	    alpha_ksyms.o systbls.o err_common.o io.o

arch/alpha/kernel/smp.c

+3 −17
Original line number Diff line number Diff line
@@ -357,24 +357,10 @@ secondary_cpu_start(int cpuid, struct task_struct *idle) 
 * Bring one cpu online.

 */

static int __cpuinit

smp_boot_one_cpu(int cpuid)

smp_boot_one_cpu(int cpuid, struct task_struct *idle)

{

	struct task_struct *idle;

	unsigned long timeout;



	/* Cook up an idler for this guy.  Note that the address we

	   give to kernel_thread is irrelevant -- it's going to start

	   where HWRPB.CPU_restart says to start.  But this gets all

	   the other task-y sort of data structures set up like we

	   wish.  We can't use kernel_thread since we must avoid

	   rescheduling the child.  */

	idle = fork_idle(cpuid);

	if (IS_ERR(idle))

		panic("failed fork for CPU %d", cpuid);



	DBGS(("smp_boot_one_cpu: CPU %d state 0x%lx flags 0x%lx\n",

	      cpuid, idle->state, idle->flags));



	/* Signal the secondary to wait a moment.  */

	smp_secondary_alive = -1;
@@ -487,9 +473,9 @@ smp_prepare_boot_cpu(void) 
}



int __cpuinit

__cpu_up(unsigned int cpu)

__cpu_up(unsigned int cpu, struct task_struct *tidle)

{

	smp_boot_one_cpu(cpu);

	smp_boot_one_cpu(cpu, tidle);



	return cpu_online(cpu) ? 0 : -ENOSYS;

}

arch/arm/Kconfig

+1 −3
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ config ARM 
	select CPU_PM if (SUSPEND || CPU_IDLE)

	select GENERIC_PCI_IOMAP

	select HAVE_BPF_JIT

	select GENERIC_SMP_IDLE_THREAD

	help

	  The ARM series is a line of low-power-consumption RISC chip designs

	  licensed by ARM Ltd and targeted at embedded applications and
@@ -154,9 +155,6 @@ config ARCH_HAS_CPUFREQ 
	  and that the relevant menu configurations are displayed for

	  it.



config ARCH_HAS_CPU_IDLE_WAIT

       def_bool y



config GENERIC_HWEIGHT

	bool

	default y