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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-21 19:43:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-21 19:43:57 -0700
commitbf67f3a5c456a18f2e8d062f7e88506ef2cd9837 (patch)
tree2a2324b2572162059307db82f9238eeb25673a77 /arch/x86/xen
parent226da0dbc84ed97f448523e2a4cb91c27fa68ed9 (diff)
parent203dacbdca977bedaba61ad2fca75d934060a5d5 (diff)
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() ...
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/smp.c19
1 files changed, 4 insertions, 15 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 0503c0c493a9..3700945ed0d5 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -265,18 +265,8 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
set_cpu_possible(cpu, false);
}
- for_each_possible_cpu (cpu) {
- struct task_struct *idle;
-
- if (cpu == 0)
- continue;
-
- idle = fork_idle(cpu);
- if (IS_ERR(idle))
- panic("failed fork for CPU %d", cpu);
-
+ for_each_possible_cpu(cpu)
set_cpu_present(cpu, true);
- }
}
static int __cpuinit
@@ -346,9 +336,8 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
return 0;
}
-static int __cpuinit xen_cpu_up(unsigned int cpu)
+static int __cpuinit xen_cpu_up(unsigned int cpu, struct task_struct *idle)
{
- struct task_struct *idle = idle_task(cpu);
int rc;
per_cpu(current_task, cpu) = idle;
@@ -562,10 +551,10 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus)
xen_init_lock_cpu(0);
}
-static int __cpuinit xen_hvm_cpu_up(unsigned int cpu)
+static int __cpuinit xen_hvm_cpu_up(unsigned int cpu, struct task_struct *tidle)
{
int rc;
- rc = native_cpu_up(cpu);
+ rc = native_cpu_up(cpu, tidle);
WARN_ON (xen_smp_intr_init(cpu));
return rc;
}