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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()
  ...
  • Loading branch information...
2 parents 226da0d + 203dacb commit bf67f3a5c456a18f2e8d062f7e88506ef2cd9837 @torvalds committed May 21, 2012
Showing with 415 additions and 1,934 deletions.
  1. +15 −0 arch/Kconfig
  2. +1 −0 arch/alpha/Kconfig
  3. +1 −1 arch/alpha/kernel/Makefile
  4. +3 −17 arch/alpha/kernel/smp.c
  5. +1 −3 arch/arm/Kconfig
  6. +1 −1 arch/arm/Makefile
  7. +0 −1 arch/arm/include/asm/cpu.h
  8. +0 −2 arch/arm/include/asm/processor.h
  9. +1 −1 arch/arm/kernel/Makefile
  10. +0 −37 arch/arm/kernel/init_task.c
  11. +0 −20 arch/arm/kernel/process.c
  12. +1 −25 arch/arm/kernel/smp.c
  13. +1 −1 arch/avr32/kernel/Makefile
  14. +0 −31 arch/avr32/kernel/init_task.c
  15. +1 −0 arch/blackfin/Kconfig
  16. +0 −2 arch/blackfin/Makefile
  17. +1 −1 arch/blackfin/kernel/Makefile
  18. +0 −32 arch/blackfin/kernel/init_task.c
  19. +1 −18 arch/blackfin/mach-common/smp.c
  20. +2 −15 arch/c6x/include/asm/thread_info.h
  21. +0 −16 arch/c6x/kernel/process.c
  22. +1 −0 arch/cris/Kconfig
  23. +3 −11 arch/cris/arch-v32/kernel/smp.c
  24. +2 −3 arch/cris/include/asm/processor.h
  25. +0 −6 arch/cris/include/asm/thread_info.h
  26. +0 −28 arch/cris/kernel/process.c
  27. +1 −1 arch/frv/Makefile
  28. +0 −15 arch/frv/include/asm/thread_info.h
  29. +1 −1 arch/frv/kernel/Makefile
  30. +0 −32 arch/frv/kernel/init_task.c
  31. +0 −15 arch/frv/kernel/process.c
  32. +1 −1 arch/h8300/kernel/Makefile
  33. +0 −36 arch/h8300/kernel/init_task.c
  34. +1 −0 arch/hexagon/Kconfig
  35. +1 −2 arch/hexagon/Makefile
  36. +0 −8 arch/hexagon/include/asm/thread_info.h
  37. +1 −1 arch/hexagon/kernel/Makefile
  38. +0 −54 arch/hexagon/kernel/init_task.c
  39. +0 −37 arch/hexagon/kernel/process.c
  40. +2 −9 arch/hexagon/kernel/smp.c
  41. +4 −0 arch/ia64/Kconfig
  42. +0 −1 arch/ia64/include/asm/processor.h
  43. +0 −3 arch/ia64/include/asm/thread_info.h
  44. +0 −20 arch/ia64/kernel/process.c
  45. +4 −59 arch/ia64/kernel/smpboot.c
  46. +1 −1 arch/m32r/Makefile
  47. +2 −15 arch/m32r/include/asm/thread_info.h
  48. +1 −1 arch/m32r/kernel/Makefile
  49. +0 −34 arch/m32r/kernel/init_task.c
  50. +1 −5 arch/m32r/kernel/smpboot.c
  51. +1 −1 arch/m68k/kernel/Makefile
  52. +0 −35 arch/m68k/kernel/init_task.c
  53. +1 −1 arch/microblaze/kernel/Makefile
  54. +0 −26 arch/microblaze/kernel/init_task.c
  55. +1 −0 arch/mips/Kconfig
  56. +1 −1 arch/mips/Makefile
  57. +0 −12 arch/mips/include/asm/thread_info.h
  58. +1 −1 arch/mips/kernel/Makefile
  59. +0 −35 arch/mips/kernel/init_task.c
  60. +2 −54 arch/mips/kernel/smp.c
  61. +1 −1 arch/mn10300/Makefile
  62. +3 −14 arch/mn10300/include/asm/thread_info.h
  63. +1 −1 arch/mn10300/kernel/Makefile
  64. +0 −39 arch/mn10300/kernel/init_task.c
  65. +1 −2 arch/mn10300/kernel/kgdb.c
  66. +1 −1 arch/mn10300/kernel/smp.c
  67. +1 −1 arch/openrisc/Makefile
  68. +1 −1 arch/openrisc/kernel/Makefile
  69. +0 −42 arch/openrisc/kernel/init_task.c
  70. +1 −0 arch/parisc/Kconfig
  71. +1 −1 arch/parisc/Makefile
  72. +1 −1 arch/parisc/kernel/Makefile
  73. +0 −70 arch/parisc/kernel/init_task.c
  74. +3 −22 arch/parisc/kernel/smp.c
  75. +12 −0 arch/parisc/mm/init.c
  76. +1 −4 arch/powerpc/Kconfig
  77. +0 −1 arch/powerpc/include/asm/processor.h
  78. +0 −13 arch/powerpc/include/asm/thread_info.h
  79. +1 −1 arch/powerpc/kernel/Makefile
  80. +0 −23 arch/powerpc/kernel/idle.c
  81. +0 −29 arch/powerpc/kernel/init_task.c
  82. +0 −31 arch/powerpc/kernel/process.c
  83. +6 −70 arch/powerpc/kernel/smp.c
  84. +1 −0 arch/s390/Kconfig
  85. +0 −1 arch/s390/Makefile
  86. +1 −1 arch/s390/include/asm/smp.h
  87. +1 −1 arch/s390/kernel/Makefile
  88. +0 −38 arch/s390/kernel/init_task.c
  89. +3 −32 arch/s390/kernel/smp.c
  90. +3 −7 arch/score/include/asm/thread_info.h
  91. +1 −1 arch/score/kernel/Makefile
  92. +0 −46 arch/score/kernel/init_task.c
  93. +1 −3 arch/sh/Kconfig
  94. +1 −1 arch/sh/Makefile
  95. +0 −5 arch/sh/include/asm/processor.h
  96. +1 −10 arch/sh/include/asm/thread_info.h
  97. +1 −1 arch/sh/kernel/Makefile
  98. +0 −20 arch/sh/kernel/idle.c
  99. +0 −30 arch/sh/kernel/init_task.c
  100. +2 −44 arch/sh/kernel/process.c
  101. +1 −13 arch/sh/kernel/smp.c
  102. +2 −0 arch/sparc/Kconfig
  103. +0 −1 arch/sparc/Makefile
  104. +3 −2 arch/sparc/include/asm/leon.h
  105. +0 −2 arch/sparc/include/asm/thread_info_32.h
  106. +2 −23 arch/sparc/include/asm/thread_info_64.h
  107. +0 −1 arch/sparc/kernel/Makefile
  108. +0 −22 arch/sparc/kernel/init_task.c
  109. +2 −7 arch/sparc/kernel/leon_smp.c
  110. +6 −6 arch/sparc/kernel/smp_32.c
  111. +4 −8 arch/sparc/kernel/smp_64.c
  112. +2 −6 arch/sparc/kernel/sun4d_smp.c
  113. +2 −5 arch/sparc/kernel/sun4m_smp.c
  114. +2 −4 arch/tile/include/asm/thread_info.h
  115. +1 −1 arch/tile/kernel/Makefile
  116. +0 −59 arch/tile/kernel/init_task.c
  117. +2 −21 arch/tile/kernel/process.c
  118. +16 −0 arch/tile/kernel/setup.c
  119. +1 −1 arch/tile/kernel/smpboot.c
  120. +0 −2 arch/um/include/asm/processor-generic.h
  121. +1 −1 arch/um/kernel/Makefile
  122. +0 −38 arch/um/kernel/init_task.c
  123. +1 −1 arch/um/kernel/smp.c
  124. +5 −0 arch/um/kernel/um_arch.c
  125. +0 −1 arch/unicore32/Makefile
  126. +1 −1 arch/unicore32/kernel/Makefile
  127. +0 −44 arch/unicore32/kernel/init_task.c
  128. +1 −3 arch/x86/Kconfig
  129. +0 −1 arch/x86/Makefile
  130. +1 −1 arch/x86/include/asm/boot.h
  131. +2 −2 arch/x86/include/asm/page_32_types.h
  132. +2 −2 arch/x86/include/asm/page_64_types.h
  133. +0 −2 arch/x86/include/asm/processor.h
  134. +7 −4 arch/x86/include/asm/smp.h
  135. +1 −20 arch/x86/include/asm/thread_info.h
  136. +1 −1 arch/x86/kernel/Makefile
  137. +1 −1 arch/x86/kernel/apm_32.c
  138. +0 −42 arch/x86/kernel/init_task.c
  139. +4 −4 arch/x86/kernel/irq_32.c
  140. +11 −23 arch/x86/kernel/process.c
  141. +11 −72 arch/x86/kernel/smpboot.c
  142. +4 −15 arch/x86/xen/smp.c
  143. +1 −1 arch/xtensa/kernel/Makefile
  144. +0 −31 arch/xtensa/kernel/init_task.c
  145. +1 −12 drivers/cpuidle/cpuidle.c
  146. +5 −1 include/linux/smp.h
  147. +6 −0 include/linux/thread_info.h
  148. +4 −0 init/Makefile
  149. +12 −5 {arch/alpha/kernel → init}/init_task.c
  150. +1 −0 kernel/Makefile
  151. +12 −1 kernel/cpu.c
  152. +49 −20 kernel/fork.c
  153. +0 −2 kernel/sched/Makefile
  154. +2 −0 kernel/sched/core.c
  155. +27 −0 kernel/smp.c
  156. +62 −0 kernel/smpboot.c
  157. +18 −0 kernel/smpboot.h
View
15 arch/Kconfig
@@ -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
View
1 arch/alpha/Kconfig
@@ -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,
View
2 arch/alpha/kernel/Makefile
@@ -6,7 +6,7 @@ extra-y := head.o vmlinux.lds
asflags-y := $(KBUILD_CFLAGS)
ccflags-y := -Wno-sign-compare
-obj-y := entry.o traps.o process.o init_task.o osf_sys.o irq.o \
+obj-y := entry.o traps.o process.o osf_sys.o irq.o \
irq_alpha.o signal.o setup.o ptrace.o time.o \
alpha_ksyms.o systbls.o err_common.o io.o
View
20 arch/alpha/kernel/smp.c
@@ -357,24 +357,10 @@ secondary_cpu_start(int cpuid, struct task_struct *idle)
* Bring one cpu online.
*/
static int __cpuinit
-smp_boot_one_cpu(int cpuid)
+smp_boot_one_cpu(int cpuid, struct task_struct *idle)
{
- struct task_struct *idle;
unsigned long timeout;
- /* Cook up an idler for this guy. Note that the address we
- give to kernel_thread is irrelevant -- it's going to start
- where HWRPB.CPU_restart says to start. But this gets all
- the other task-y sort of data structures set up like we
- wish. We can't use kernel_thread since we must avoid
- rescheduling the child. */
- idle = fork_idle(cpuid);
- if (IS_ERR(idle))
- panic("failed fork for CPU %d", cpuid);
-
- DBGS(("smp_boot_one_cpu: CPU %d state 0x%lx flags 0x%lx\n",
- cpuid, idle->state, idle->flags));
-
/* Signal the secondary to wait a moment. */
smp_secondary_alive = -1;
@@ -487,9 +473,9 @@ smp_prepare_boot_cpu(void)
}
int __cpuinit
-__cpu_up(unsigned int cpu)
+__cpu_up(unsigned int cpu, struct task_struct *tidle)
{
- smp_boot_one_cpu(cpu);
+ smp_boot_one_cpu(cpu, tidle);
return cpu_online(cpu) ? 0 : -ENOSYS;
}
View
4 arch/arm/Kconfig
@@ -37,6 +37,7 @@ config ARM
select CPU_PM if (SUSPEND || CPU_IDLE)
select GENERIC_PCI_IOMAP
select HAVE_BPF_JIT
+ select GENERIC_SMP_IDLE_THREAD
help
The ARM series is a line of low-power-consumption RISC chip designs
licensed by ARM Ltd and targeted at embedded applications and
@@ -154,9 +155,6 @@ config ARCH_HAS_CPUFREQ
and that the relevant menu configurations are displayed for
it.
-config ARCH_HAS_CPU_IDLE_WAIT
- def_bool y
-
config GENERIC_HWEIGHT
bool
default y
View
2 arch/arm/Makefile
@@ -117,7 +117,7 @@ KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_THUMB2) $(arch-y) $(tune-y) -include asm/
CHECKFLAGS += -D__arm__
#Default value
-head-y := arch/arm/kernel/head$(MMUEXT).o arch/arm/kernel/init_task.o
+head-y := arch/arm/kernel/head$(MMUEXT).o
textofs-y := 0x00008000
textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
# We don't want the htc bootloader to corrupt kernel during resume
View
1 arch/arm/include/asm/cpu.h
@@ -16,7 +16,6 @@
struct cpuinfo_arm {
struct cpu cpu;
#ifdef CONFIG_SMP
- struct task_struct *idle;
unsigned int loops_per_jiffy;
#endif
};
View
2 arch/arm/include/asm/processor.h
@@ -88,8 +88,6 @@ unsigned long get_wchan(struct task_struct *p);
#define cpu_relax() barrier()
#endif
-void cpu_idle_wait(void);
-
/*
* Create a new kernel thread
*/
View
2 arch/arm/kernel/Makefile
@@ -82,4 +82,4 @@ head-y := head$(MMUEXT).o
obj-$(CONFIG_DEBUG_LL) += debug.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-extra-y := $(head-y) init_task.o vmlinux.lds
+extra-y := $(head-y) vmlinux.lds
View
37 arch/arm/kernel/init_task.c
@@ -1,37 +0,0 @@
-/*
- * linux/arch/arm/kernel/init_task.c
- */
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-#include <linux/uaccess.h>
-
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by making sure
- * the linker maps this in the .text segment right after head.S,
- * and making head.S ensure the proper alignment.
- *
- * The things we do for performance..
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
View
20 arch/arm/kernel/process.c
@@ -157,26 +157,6 @@ EXPORT_SYMBOL(pm_power_off);
void (*arm_pm_restart)(char str, const char *cmd) = null_restart;
EXPORT_SYMBOL_GPL(arm_pm_restart);
-static void do_nothing(void *unused)
-{
-}
-
-/*
- * cpu_idle_wait - Used to ensure that all the CPUs discard old value of
- * pm_idle and update to new pm_idle value. Required while changing pm_idle
- * handler on SMP systems.
- *
- * Caller must have changed pm_idle to the new value before the call. Old
- * pm_idle value will not be used by any CPU after the return of this function.
- */
-void cpu_idle_wait(void)
-{
- smp_mb();
- /* kick all the CPUs so that they exit out of pm_idle */
- smp_call_function(do_nothing, NULL, 1);
-}
-EXPORT_SYMBOL_GPL(cpu_idle_wait);
-
/*
* This is our default idle handler.
*/
View
26 arch/arm/kernel/smp.c
@@ -60,32 +60,11 @@ enum ipi_msg_type {
static DECLARE_COMPLETION(cpu_running);
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
{
- struct cpuinfo_arm *ci = &per_cpu(cpu_data, cpu);
- struct task_struct *idle = ci->idle;
int ret;
/*
- * Spawn a new process manually, if not already done.
- * Grab a pointer to its task struct so we can mess with it
- */
- if (!idle) {
- idle = fork_idle(cpu);
- if (IS_ERR(idle)) {
- printk(KERN_ERR "CPU%u: fork() failed\n", cpu);
- return PTR_ERR(idle);
- }
- ci->idle = idle;
- } else {
- /*
- * Since this idle thread is being re-used, call
- * init_idle() to reinitialize the thread structure.
- */
- init_idle(idle, cpu);
- }
-
- /*
* We need to tell the secondary core where to find
* its stack and the page tables.
*/
@@ -318,9 +297,6 @@ void __init smp_cpus_done(unsigned int max_cpus)
void __init smp_prepare_boot_cpu(void)
{
- unsigned int cpu = smp_processor_id();
-
- per_cpu(cpu_data, cpu).idle = current;
}
void __init smp_prepare_cpus(unsigned int max_cpus)
View
2 arch/avr32/kernel/Makefile
@@ -8,7 +8,7 @@ obj-$(CONFIG_SUBARCH_AVR32B) += entry-avr32b.o
obj-y += syscall_table.o syscall-stubs.o irq.o
obj-y += setup.o traps.o ocd.o ptrace.o
obj-y += signal.o sys_avr32.o process.o time.o
-obj-y += init_task.o switch_to.o cpu.o
+obj-y += switch_to.o cpu.o
obj-$(CONFIG_MODULES) += module.o avr32_ksyms.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
View
31 arch/avr32/kernel/init_task.c
@@ -1,31 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/sched.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial thread structure. Must be aligned on an 8192-byte boundary.
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
View
1 arch/blackfin/Kconfig
@@ -37,6 +37,7 @@ config BLACKFIN
select GENERIC_IRQ_PROBE
select IRQ_PER_CPU if SMP
select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
+ select GENERIC_SMP_IDLE_THREAD
config GENERIC_CSUM
def_bool y
View
2 arch/blackfin/Makefile
@@ -109,8 +109,6 @@ KBUILD_AFLAGS += -mcpu=$(CPU_REV)
CHECKFLAGS_SILICON = $(shell echo "" | $(CPP) $(KBUILD_CFLAGS) -dD - 2>/dev/null | awk '$$2 == "__SILICON_REVISION__" { print $$3 }')
CHECKFLAGS += -D__SILICON_REVISION__=$(CHECKFLAGS_SILICON) -D__bfin__
-head-y := arch/$(ARCH)/kernel/init_task.o
-
core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/ arch/$(ARCH)/mach-common/
# If we have a machine-specific directory, then include it in the build.
View
2 arch/blackfin/kernel/Makefile
@@ -2,7 +2,7 @@
# arch/blackfin/kernel/Makefile
#
-extra-y := init_task.o vmlinux.lds
+extra-y := vmlinux.lds
obj-y := \
entry.o process.o bfin_ksyms.o ptrace.o setup.o signal.o \
View
32 arch/blackfin/kernel/init_task.c
@@ -1,32 +0,0 @@
-/*
- * Copyright 2004-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later
- */
-
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-#include <linux/fs.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
-
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry.
- */
-union thread_union init_thread_union
- __init_task_data = {
-INIT_THREAD_INFO(init_task)};
View
19 arch/blackfin/mach-common/smp.c
@@ -340,27 +340,10 @@ void smp_send_stop(void)
return;
}
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
{
int ret;
- struct blackfin_cpudata *ci = &per_cpu(cpu_data, cpu);
- struct task_struct *idle = ci->idle;
- if (idle) {
- free_task(idle);
- idle = NULL;
- }
-
- if (!idle) {
- idle = fork_idle(cpu);
- if (IS_ERR(idle)) {
- printk(KERN_ERR "CPU%u: fork() failed\n", cpu);
- return PTR_ERR(idle);
- }
- ci->idle = idle;
- } else {
- init_idle(idle, cpu);
- }
secondary_stack = task_stack_page(idle) + THREAD_SIZE;
ret = platform_boot_secondary(cpu, idle);
View
17 arch/c6x/include/asm/thread_info.h
@@ -20,11 +20,11 @@
#ifdef CONFIG_4KSTACKS
#define THREAD_SIZE 4096
#define THREAD_SHIFT 12
-#define THREAD_ORDER 0
+#define THREAD_SIZE_ORDER 0
#else
#define THREAD_SIZE 8192
#define THREAD_SHIFT 13
-#define THREAD_ORDER 1
+#define THREAD_SIZE_ORDER 1
#endif
#define THREAD_START_SP (THREAD_SIZE - 8)
@@ -80,19 +80,6 @@ struct thread_info *current_thread_info(void)
return ti;
}
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
-/* thread information allocation */
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define THREAD_FLAGS (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
-#else
-#define THREAD_FLAGS (GFP_KERNEL | __GFP_NOTRACK)
-#endif
-
-#define alloc_thread_info_node(tsk, node) \
- ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER))
-
-#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER)
#define get_thread_info(ti) get_task_struct((ti)->task)
#define put_thread_info(ti) put_task_struct((ti)->task)
#endif /* __ASSEMBLY__ */
View
16 arch/c6x/kernel/process.c
@@ -26,22 +26,6 @@ void (*c6x_halt)(void);
extern asmlinkage void ret_from_fork(void);
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-
-/*
- * Initial thread structure.
- */
-union thread_union init_thread_union __init_task_data = {
- INIT_THREAD_INFO(init_task)
-};
-
-/*
- * Initial task structure.
- */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
-
/*
* power off function, if any
*/
View
1 arch/cris/Kconfig
@@ -49,6 +49,7 @@ config CRIS
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP
+ select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32
config HZ
int
View
14 arch/cris/arch-v32/kernel/smp.c
@@ -108,17 +108,12 @@ void __init smp_cpus_done(unsigned int max_cpus)
/* Bring one cpu online.*/
static int __init
-smp_boot_one_cpu(int cpuid)
+smp_boot_one_cpu(int cpuid, struct task_struct idle)
{
unsigned timeout;
- struct task_struct *idle;
cpumask_t cpu_mask;
cpumask_clear(&cpu_mask);
- idle = fork_idle(cpuid);
- if (IS_ERR(idle))
- panic("SMP: fork failed for CPU:%d", cpuid);
-
task_thread_info(idle)->cpu = cpuid;
/* Information to the CPU that is about to boot */
@@ -142,9 +137,6 @@ smp_boot_one_cpu(int cpuid)
barrier();
}
- put_task_struct(idle);
- idle = NULL;
-
printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
return -1;
}
@@ -207,9 +199,9 @@ int setup_profiling_timer(unsigned int multiplier)
*/
unsigned long cache_decay_ticks = 1;
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __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;
}
View
5 arch/cris/include/asm/processor.h
@@ -25,13 +25,12 @@ struct task_struct;
*/
#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
-/* THREAD_SIZE is the size of the task_struct/kernel_stack combo.
+/* THREAD_SIZE is the size of the thread_info/kernel_stack combo.
* normally, the stack is found by doing something like p + THREAD_SIZE
* in CRIS, a page is 8192 bytes, which seems like a sane size
*/
-
#define THREAD_SIZE PAGE_SIZE
-#define KERNEL_STACK_SIZE PAGE_SIZE
+#define THREAD_SIZE_ORDER (0)
/*
* At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack.
View
6 arch/cris/include/asm/thread_info.h
@@ -65,12 +65,6 @@ struct thread_info {
#define init_thread_info (init_thread_union.thread_info)
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-/* thread information allocation */
-#define alloc_thread_info_node(tsk, node) \
- ((struct thread_info *) __get_free_pages(GFP_KERNEL, 1))
-#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
-
#endif /* !__ASSEMBLY__ */
/*
View
28 arch/cris/kernel/process.c
@@ -29,34 +29,6 @@
//#define DEBUG
/*
- * Initial task structure. Make this a per-architecture thing,
- * because different architectures tend to have different
- * alignment requirements and potentially different initial
- * setup.
- */
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-
-/*
* The hlt_counter, disable_hlt and enable_hlt is just here as a hook if
* there would ever be a halt sequence (for power save when idle) with
* some largish delay when halting or resuming *and* a driver that can't
View
2 arch/frv/Makefile
@@ -81,7 +81,7 @@ ifdef CONFIG_DEBUG_INFO
KBUILD_AFLAGS += -Wa,--gdwarf2
endif
-head-y := arch/frv/kernel/head.o arch/frv/kernel/init_task.o
+head-y := arch/frv/kernel/head.o
core-y += arch/frv/kernel/ arch/frv/mm/
libs-y += arch/frv/lib/
View
15 arch/frv/include/asm/thread_info.h
@@ -21,8 +21,6 @@
#define THREAD_SIZE 8192
-#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
-
/*
* low level task data that entry.S needs immediate access to
* - this struct should fit entirely inside of one cache line
@@ -82,19 +80,6 @@ register struct thread_info *__current_thread_info asm("gr15");
#define current_thread_info() ({ __current_thread_info; })
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
-/* thread information allocation */
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info_node(tsk, node) \
- kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#else
-#define alloc_thread_info_node(tsk, node) \
- kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#endif
-
-#define free_thread_info(info) kfree(info)
-
#endif /* __ASSEMBLY__ */
/*
View
2 arch/frv/kernel/Makefile
@@ -5,7 +5,7 @@
heads-y := head-uc-fr401.o head-uc-fr451.o head-uc-fr555.o
heads-$(CONFIG_MMU) := head-mmu-fr451.o
-extra-y:= head.o init_task.o vmlinux.lds
+extra-y:= head.o vmlinux.lds
obj-y := $(heads-y) entry.o entry-table.o break.o switch_to.o kernel_thread.o \
kernel_execve.o process.o traps.o ptrace.o signal.o dma.o \
View
32 arch/frv/kernel/init_task.c
@@ -1,32 +0,0 @@
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is THREAD_SIZE aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
View
15 arch/frv/kernel/process.c
@@ -43,21 +43,6 @@ asmlinkage void ret_from_fork(void);
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
-struct task_struct *alloc_task_struct_node(int node)
-{
- struct task_struct *p = kmalloc_node(THREAD_SIZE, GFP_KERNEL, node);
-
- if (p)
- atomic_set((atomic_t *)(p+1), 1);
- return p;
-}
-
-void free_task_struct(struct task_struct *p)
-{
- if (atomic_dec_and_test((atomic_t *)(p+1)))
- kfree(p);
-}
-
static void core_sleep_idle(void)
{
#ifdef LED_DEBUG_SLEEP
View
2 arch/h8300/kernel/Makefile
@@ -6,7 +6,7 @@ extra-y := vmlinux.lds
obj-y := process.o traps.o ptrace.o irq.o \
sys_h8300.o time.o signal.o \
- setup.o gpio.o init_task.o syscalls.o \
+ setup.o gpio.o syscalls.o \
entry.o timer/
obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o
View
36 arch/h8300/kernel/init_task.c
@@ -1,36 +0,0 @@
-/*
- * linux/arch/h8300/kernel/init_task.c
- */
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-__asm__(".align 4");
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
View
1 arch/hexagon/Kconfig
@@ -27,6 +27,7 @@ config HEXAGON
select HAVE_ARCH_TRACEHOOK
select NO_IOPORT
select GENERIC_IOMAP
+ select GENERIC_SMP_IDLE_THREAD
# mostly generic routines, with some accelerated ones
---help---
Qualcomm Hexagon is a processor architecture designed for high
View
3 arch/hexagon/Makefile
@@ -45,8 +45,7 @@ KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
libs-y += $(LIBGCC)
-head-y := arch/hexagon/kernel/head.o \
- arch/hexagon/kernel/init_task.o
+head-y := arch/hexagon/kernel/head.o
core-y += arch/hexagon/kernel/ \
arch/hexagon/mm/ \
View
8 arch/hexagon/include/asm/thread_info.h
@@ -31,15 +31,7 @@
#define THREAD_SHIFT 12
#define THREAD_SIZE (1<<THREAD_SHIFT)
-
-#if THREAD_SHIFT >= PAGE_SHIFT
#define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT)
-#else /* don't use standard allocator */
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-extern struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node);
-extern void free_thread_info(struct thread_info *ti);
-#endif
-
#ifndef __ASSEMBLY__
View
2 arch/hexagon/kernel/Makefile
@@ -1,4 +1,4 @@
-extra-y := head.o vmlinux.lds init_task.o
+extra-y := head.o vmlinux.lds
obj-$(CONFIG_SMP) += smp.o topology.o
View
54 arch/hexagon/kernel/init_task.c
@@ -1,54 +0,0 @@
-/*
- * Init task definition
- *
- * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-#include <asm/thread_info.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by making sure
- * the linker maps this in the .text segment right after head.S,
- * and making head.S ensure the proper alignment.
- */
-union thread_union init_thread_union
- __attribute__((__section__(".data.init_task"),
- __aligned__(THREAD_SIZE))) = {
- INIT_THREAD_INFO(init_task)
- };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
View
37 arch/hexagon/kernel/process.c
@@ -234,43 +234,6 @@ unsigned long get_wchan(struct task_struct *p)
}
/*
- * Borrowed from PowerPC -- basically allow smaller kernel stacks if we
- * go crazy with the page sizes.
- */
-#if THREAD_SHIFT < PAGE_SHIFT
-
-static struct kmem_cache *thread_info_cache;
-
-struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node)
-{
- struct thread_info *ti;
-
- ti = kmem_cache_alloc_node(thread_info_cache, GFP_KERNEL, node);
- if (unlikely(ti == NULL))
- return NULL;
-#ifdef CONFIG_DEBUG_STACK_USAGE
- memset(ti, 0, THREAD_SIZE);
-#endif
- return ti;
-}
-
-void free_thread_info(struct thread_info *ti)
-{
- kmem_cache_free(thread_info_cache, ti);
-}
-
-/* Weak symbol; called by init/main.c */
-
-void thread_info_cache_init(void)
-{
- thread_info_cache = kmem_cache_create("thread_info", THREAD_SIZE,
- THREAD_SIZE, 0, NULL);
- BUG_ON(thread_info_cache == NULL);
-}
-
-#endif /* THREAD_SHIFT < PAGE_SHIFT */
-
-/*
* Required placeholder.
*/
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
View
11 arch/hexagon/kernel/smp.c
@@ -196,18 +196,11 @@ void __cpuinit start_secondary(void)
* maintains control until "cpu_online(cpu)" is set.
*/
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
{
- struct task_struct *idle;
- struct thread_info *thread;
+ struct thread_info *thread = (struct thread_info *)idle->stack;
void *stack_start;
- /* Create new init task for the CPU */
- idle = fork_idle(cpu);
- if (IS_ERR(idle))
- panic(KERN_ERR "fork_idle failed\n");
-
- thread = (struct thread_info *)idle->stack;
thread->cpu = cpu;
/* Boot to the head. */
View
4 arch/ia64/Kconfig
@@ -33,6 +33,10 @@ config IA64
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
+ select GENERIC_SMP_IDLE_THREAD
+ select ARCH_INIT_TASK
+ select ARCH_TASK_STRUCT_ALLOCATOR
+ select ARCH_THREAD_INFO_ALLOCATOR
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
View
1 arch/ia64/include/asm/processor.h
@@ -723,7 +723,6 @@ extern unsigned long boot_option_idle_override;
enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT,
IDLE_NOMWAIT, IDLE_POLL};
-void cpu_idle_wait(void);
void default_idle(void);
#define ia64_platform_is(x) (strcmp(x, platform_name) == 0)
View
3 arch/ia64/include/asm/thread_info.h
@@ -54,8 +54,6 @@ struct thread_info {
}, \
}
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
#ifndef ASM_OFFSETS_C
/* how to get the thread information struct from C */
#define current_thread_info() ((struct thread_info *) ((char *) current + IA64_TASK_SIZE))
@@ -84,7 +82,6 @@ struct thread_info {
#endif
#define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET)
-#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
#define alloc_task_struct_node(node) \
({ \
struct page *page = alloc_pages_node(node, GFP_KERNEL | __GFP_COMP, \
View
20 arch/ia64/kernel/process.c
@@ -273,26 +273,6 @@ static inline void play_dead(void)
}
#endif /* CONFIG_HOTPLUG_CPU */
-static void do_nothing(void *unused)
-{
-}
-
-/*
- * cpu_idle_wait - Used to ensure that all the CPUs discard old value of
- * pm_idle and update to new pm_idle value. Required while changing pm_idle
- * handler on SMP systems.
- *
- * Caller must have changed pm_idle to the new value before the call. Old
- * pm_idle value will not be used by any CPU after the return of this function.
- */
-void cpu_idle_wait(void)
-{
- smp_mb();
- /* kick all the CPUs so that they exit out of pm_idle */
- smp_call_function(do_nothing, NULL, 1);
-}
-EXPORT_SYMBOL_GPL(cpu_idle_wait);
-
void __attribute__((noreturn))
cpu_idle (void)
{
View
63 arch/ia64/kernel/smpboot.c
@@ -75,13 +75,6 @@
#endif
/*
- * Store all idle threads, this can be reused instead of creating
- * a new thread. Also avoids complicated thread destroy functionality
- * for idle threads.
- */
-struct task_struct *idle_thread_array[NR_CPUS];
-
-/*
* Global array allocated for NR_CPUS at boot time
*/
struct sal_to_os_boot sal_boot_rendez_state[NR_CPUS];
@@ -94,13 +87,7 @@ struct sal_to_os_boot *sal_state_for_booting_cpu = &sal_boot_rendez_state[0];
#define set_brendez_area(x) (sal_state_for_booting_cpu = &sal_boot_rendez_state[(x)]);
-#define get_idle_for_cpu(x) (idle_thread_array[(x)])
-#define set_idle_for_cpu(x,p) (idle_thread_array[(x)] = (p))
-
#else
-
-#define get_idle_for_cpu(x) (NULL)
-#define set_idle_for_cpu(x,p)
#define set_brendez_area(x)
#endif
@@ -480,54 +467,12 @@ struct pt_regs * __cpuinit idle_regs(struct pt_regs *regs)
return NULL;
}
-struct create_idle {
- struct work_struct work;
- struct task_struct *idle;
- struct completion done;
- int cpu;
-};
-
-void __cpuinit
-do_fork_idle(struct work_struct *work)
-{
- struct create_idle *c_idle =
- container_of(work, struct create_idle, work);
-
- c_idle->idle = fork_idle(c_idle->cpu);
- complete(&c_idle->done);
-}
-
static int __cpuinit
-do_boot_cpu (int sapicid, int cpu)
+do_boot_cpu (int sapicid, int cpu, struct task_struct *idle)
{
int timeout;
- struct create_idle c_idle = {
- .work = __WORK_INITIALIZER(c_idle.work, do_fork_idle),
- .cpu = cpu,
- .done = COMPLETION_INITIALIZER(c_idle.done),
- };
-
- /*
- * We can't use kernel_thread since we must avoid to
- * reschedule the child.
- */
- c_idle.idle = get_idle_for_cpu(cpu);
- if (c_idle.idle) {
- init_idle(c_idle.idle, cpu);
- goto do_rest;
- }
-
- schedule_work(&c_idle.work);
- wait_for_completion(&c_idle.done);
-
- if (IS_ERR(c_idle.idle))
- panic("failed fork for CPU %d", cpu);
-
- set_idle_for_cpu(cpu, c_idle.idle);
-
-do_rest:
- task_for_booting_cpu = c_idle.idle;
+ task_for_booting_cpu = idle;
Dprintk("Sending wakeup vector %lu to AP 0x%x/0x%x.\n", ap_wakeup_vector, cpu, sapicid);
set_brendez_area(cpu);
@@ -793,7 +738,7 @@ set_cpu_sibling_map(int cpu)
}
int __cpuinit
-__cpu_up (unsigned int cpu)
+__cpu_up(unsigned int cpu, struct task_struct *tidle)
{
int ret;
int sapicid;
@@ -811,7 +756,7 @@ __cpu_up (unsigned int cpu)
per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
/* Processor goes to start_secondary(), sets online flag */
- ret = do_boot_cpu(sapicid, cpu);
+ ret = do_boot_cpu(sapicid, cpu, tidle);
if (ret < 0)
return ret;
View
2 arch/m32r/Makefile
@@ -31,7 +31,7 @@ KBUILD_AFLAGS += $(aflags-y)
CHECKFLAGS += -D__m32r__ -D__BIG_ENDIAN__=1
-head-y := arch/m32r/kernel/head.o arch/m32r/kernel/init_task.o
+head-y := arch/m32r/kernel/head.o
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
View
17 arch/m32r/include/asm/thread_info.h
@@ -55,8 +55,8 @@ struct thread_info {
#define PREEMPT_ACTIVE 0x10000000
-#define THREAD_SIZE (PAGE_SIZE << 1)
-
+#define THREAD_SIZE (PAGE_SIZE << 1)
+#define THREAD_SIZE_ORDER 1
/*
* macros/functions for gaining access to the thread information structure
*/
@@ -92,19 +92,6 @@ static inline struct thread_info *current_thread_info(void)
return ti;
}
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
-/* thread information allocation */
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info_node(tsk, node) \
- kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#else
-#define alloc_thread_info_node(tsk, node) \
- kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#endif
-
-#define free_thread_info(info) kfree(info)
-
#define TI_FLAG_FAULT_CODE_SHIFT 28
static inline void set_thread_fault_code(unsigned int val)
View
2 arch/m32r/kernel/Makefile
@@ -2,7 +2,7 @@
# Makefile for the Linux/M32R kernel.
#
-extra-y := head.o init_task.o vmlinux.lds
+extra-y := head.o vmlinux.lds
obj-y := process.o entry.o traps.o align.o irq.o setup.o time.o \
m32r_ksyms.o sys_m32r.o signal.o ptrace.o
View
34 arch/m32r/kernel/init_task.c
@@ -1,34 +0,0 @@
-/* orig : i386 init_task.c */
-
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-
View
6 arch/m32r/kernel/smpboot.c
@@ -109,12 +109,8 @@ static unsigned int calibration_result;
/* Function Prototypes */
/*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/
-void smp_prepare_boot_cpu(void);
-void smp_prepare_cpus(unsigned int);
static void init_ipi_lock(void);
static void do_boot_cpu(int);
-int __cpu_up(unsigned int);
-void smp_cpus_done(unsigned int);
int start_secondary(void *);
static void smp_callin(void);
@@ -347,7 +343,7 @@ static void __init do_boot_cpu(int phys_id)
}
}
-int __cpuinit __cpu_up(unsigned int cpu_id)
+int __cpuinit __cpu_up(unsigned int cpu_id, struct task_struct *tidle)
{
int timeout;
View
2 arch/m68k/kernel/Makefile
@@ -13,7 +13,7 @@ extra-$(CONFIG_SUN3X) := head.o
extra-$(CONFIG_SUN3) := sun3-head.o
extra-y += vmlinux.lds
-obj-y := entry.o init_task.o irq.o m68k_ksyms.o module.o process.o ptrace.o
+obj-y := entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o
obj-y += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o
View
35 arch/m68k/kernel/init_task.c
@@ -1,35 +0,0 @@
-/*
- * linux/arch/m68knommu/kernel/init_task.c
- */
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is THREAD size aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
View
2 arch/microblaze/kernel/Makefile
@@ -16,7 +16,7 @@ endif
extra-y := head.o vmlinux.lds
obj-y += dma.o exceptions.o \
- hw_exception_handler.o init_task.o intc.o irq.o \
+ hw_exception_handler.o intc.o irq.o \
process.o prom.o prom_parse.o ptrace.o \
reset.o setup.o signal.o sys_microblaze.o timer.o traps.o unwind.o
View
26 arch/microblaze/kernel/init_task.c
@@ -1,26 +0,0 @@
-/*
- * Copyright (C) 2009 Michal Simek <monstr@monstr.eu>
- * Copyright (C) 2009 PetaLogix
- * Copyright (C) 2006 Atmark Techno, Inc.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
View
1 arch/mips/Kconfig
@@ -29,6 +29,7 @@ config MIPS
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select ARCH_DISCARD_MEMBLOCK
+ select GENERIC_SMP_IDLE_THREAD
menu "Machine selection"
View
2 arch/mips/Makefile
@@ -235,7 +235,7 @@ endif
OBJCOPYFLAGS += --remove-section=.reginfo
-head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o
+head-y := arch/mips/kernel/head.o
libs-y += arch/mips/lib/
View
12 arch/mips/include/asm/thread_info.h
@@ -85,18 +85,6 @@ register struct thread_info *__current_thread_info __asm__("$28");
#define STACK_WARN (THREAD_SIZE / 8)
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info_node(tsk, node) \
- kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#else
-#define alloc_thread_info_node(tsk, node) \
- kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#endif
-
-#define free_thread_info(info) kfree(info)
-
#endif /* !__ASSEMBLY__ */
#define PREEMPT_ACTIVE 0x10000000
View
2 arch/mips/kernel/Makefile
@@ -2,7 +2,7 @@
# Makefile for the Linux/MIPS kernel.
#
-extra-y := head.o init_task.o vmlinux.lds
+extra-y := head.o vmlinux.lds
obj-y += cpu-probe.o branch.o entry.o genex.o irq.o process.o \
ptrace.o reset.o setup.o signal.o syscall.o \
View
35 arch/mips/kernel/init_task.c
@@ -1,35 +0,0 @@
-#include <linux/mm.h>
-#include <linux/export.h>
-#include <linux/sched.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/thread_info.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by making sure
- * the linker maps this in the .text segment right after head.S,
- * and making head.S ensure the proper alignment.
- *
- * The things we do for performance..
- */
-union thread_union init_thread_union __init_task_data
- __attribute__((__aligned__(THREAD_SIZE))) =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
View
56 arch/mips/kernel/smp.c
@@ -186,61 +186,9 @@ void __devinit smp_prepare_boot_cpu(void)
cpu_set(0, cpu_callin_map);
}
-/*
- * Called once for each "cpu_possible(cpu)". Needs to spin up the cpu
- * and keep control until "cpu_online(cpu)" is set. Note: cpu is
- * physical, not logical.
- */
-static struct task_struct *cpu_idle_thread[NR_CPUS];
-
-struct create_idle {
- struct work_struct work;
- struct task_struct *idle;
- struct completion done;
- int cpu;
-};
-
-static void __cpuinit do_fork_idle(struct work_struct *work)
-{
- struct create_idle *c_idle =
- container_of(work, struct create_idle, work);
-
- c_idle->idle = fork_idle(c_idle->cpu);
- complete(&c_idle->done);
-}
-
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
- struct task_struct *idle;
-
- /*
- * Processor goes to start_secondary(), sets online flag
- * The following code is purely to make sure
- * Linux can schedule processes on this slave.
- */
- if (!cpu_idle_thread[cpu]) {
- /*
- * Schedule work item to avoid forking user task
- * Ported from arch/x86/kernel/smpboot.c
- */
- struct create_idle c_idle = {
- .cpu = cpu,
- .done = COMPLETION_INITIALIZER_ONSTACK(c_idle.done),
- };
-
- INIT_WORK_ONSTACK(&c_idle.work, do_fork_idle);
- schedule_work(&c_idle.work);
- wait_for_completion(&c_idle.done);
- idle = cpu_idle_thread[cpu] = c_idle.idle;
-
- if (IS_ERR(idle))
- panic(KERN_ERR "Fork failed for CPU %d", cpu);
- } else {
- idle = cpu_idle_thread[cpu];
- init_idle(idle, cpu);
- }
-
- mp_ops->boot_secondary(cpu, idle);
+ mp_ops->boot_secondary(cpu, tidle);
/*
* Trust is futile. We should really have timeouts ...
View
2 arch/mn10300/Makefile
@@ -51,7 +51,7 @@ UNIT := asb2364
endif
-head-y := arch/mn10300/kernel/head.o arch/mn10300/kernel/init_task.o
+head-y := arch/mn10300/kernel/head.o
core-y += arch/mn10300/kernel/ arch/mn10300/mm/
View
17 arch/mn10300/include/asm/thread_info.h
@@ -20,8 +20,10 @@
#ifdef CONFIG_4KSTACKS
#define THREAD_SIZE (4096)
+#define THREAD_SIZE_ORDER (0)
#else
#define THREAD_SIZE (8192)
+#define THREAD_SIZE_ORDER (1)
#endif
#define STACK_WARN (THREAD_SIZE / 8)
@@ -120,21 +122,8 @@ static inline unsigned long current_stack_pointer(void)
return sp;
}
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
-/* thread information allocation */
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info_node(tsk, node) \
- kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#else
-#define alloc_thread_info_node(tsk, node) \
- kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
-#endif
-
#ifndef CONFIG_KGDB
-#define free_thread_info(ti) kfree((ti))
-#else
-extern void free_thread_info(struct thread_info *);
+void arch_release_thread_info(struct thread_info *ti)
#endif
#define get_thread_info(ti) get_task_struct((ti)->task)
#define put_thread_info(ti) put_task_struct((ti)->task)
View
2 arch/mn10300/kernel/Makefile
@@ -1,7 +1,7 @@
#
# Makefile for the MN10300-specific core kernel code
#
-extra-y := head.o init_task.o vmlinux.lds
+extra-y := head.o vmlinux.lds
fpu-obj-y := fpu-nofpu.o fpu-nofpu-low.o
fpu-obj-$(CONFIG_FPU) := fpu.o fpu-low.o
View
39 arch/mn10300/kernel/init_task.c
@@ -1,39 +0,0 @@
-/* MN10300 Initial task definitions
- *
- * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is THREAD_SIZE aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
View
3 arch/mn10300/kernel/kgdb.c
@@ -397,7 +397,7 @@ static bool kgdb_arch_undo_singlestep(struct pt_regs *regs)
* single-step state is cleared. At this point the breakpoints should have
* been removed by __switch_to().
*/
-void free_thread_info(struct thread_info *ti)
+void arch_release_thread_info(struct thread_info *ti)
{
if (kgdb_sstep_thread == ti) {
kgdb_sstep_thread = NULL;
@@ -407,7 +407,6 @@ void free_thread_info(struct thread_info *ti)
* so force immediate reentry */
kgdb_breakpoint();
}
- kfree(ti);
}
/*
View
2 arch/mn10300/kernel/smp.c
@@ -924,7 +924,7 @@ void initialize_secondary(void)
* __cpu_up - Set smp_commenced_mask for the nominated CPU
* @cpu: The target CPU.
*/
-int __devinit __cpu_up(unsigned int cpu)
+int __devinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
int timeout;
View
2 arch/openrisc/Makefile
@@ -38,7 +38,7 @@ else
KBUILD_CFLAGS += $(call cc-option,-msoft-div)
endif
-head-y := arch/openrisc/kernel/head.o arch/openrisc/kernel/init_task.o
+head-y := arch/openrisc/kernel/head.o
core-y += arch/openrisc/lib/ \
arch/openrisc/kernel/ \
View
2 arch/openrisc/kernel/Makefile
@@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
-extra-y := head.o vmlinux.lds init_task.o
+extra-y := head.o vmlinux.lds
obj-y := setup.o idle.o or32_ksyms.o process.o dma.o \
traps.o time.o irq.o entry.o ptrace.o signal.o sys_or32.o \
View
42 arch/openrisc/kernel/init_task.c
@@ -1,42 +0,0 @@
-/*
- * OpenRISC init_task.c
- *
- * Linux architectural port borrowing liberally from similar works of
- * others. All original copyrights apply as per the original source
- * declaration.
- *
- * Modifications for the OpenRISC architecture:
- * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
- * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-#include <linux/export.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is THREAD_SIZE aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data = {
- INIT_THREAD_INFO(init_task)
-};
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
View
1 arch/parisc/Kconfig
@@ -17,6 +17,7 @@ config PARISC
select GENERIC_PCI_IOMAP
select IRQ_PER_CPU
select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select GENERIC_SMP_IDLE_THREAD
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used
View
2 arch/parisc/Makefile
@@ -75,7 +75,7 @@ head-y := arch/parisc/kernel/head.o
KBUILD_CFLAGS += $(cflags-y)
-kernel-y := mm/ kernel/ math-emu/ kernel/init_task.o
+kernel-y := mm/ kernel/ math-emu/
kernel-$(CONFIG_HPUX) += hpux/
core-y += $(addprefix arch/parisc/, $(kernel-y))
View
2 arch/parisc/kernel/Makefile
@@ -2,7 +2,7 @@
# Makefile for arch/parisc/kernel
#
-extra-y := init_task.o head.o vmlinux.lds
+extra-y := head.o vmlinux.lds
obj-y := cache.o pacache.o setup.o traps.o time.o irq.o \
pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \
View
70 arch/parisc/kernel/init_task.c
@@ -1,70 +0,0 @@
-/*
- * Static declaration of "init" task data structure.
- *
- * Copyright (C) 2000 Paul Bame <bame at parisc-linux.org>
- * Copyright (C) 2000-2001 John Marvin <jsm at parisc-linux.org>
- * Copyright (C) 2001 Helge Deller <deller @ parisc-linux.org>
- * Copyright (C) 2002 Matthew Wilcox <willy with parisc-linux.org>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial task structure.
- *
- * We need to make sure that this is 16384-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data