mirror of
https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
synced 2025-10-08 03:03:31 +10:00
6a942f5780
S390's init_idle_preempt_count(p, cpu) doesn't actually let us initialize the
preempt_count of the requested CPU's idle task: it unconditionally writes
to the current CPU's. This clearly conflicts with idle_threads_init(),
which intends to initialize *all* the idle tasks, including their
preempt_count (or their CPU's, if the arch uses a per-CPU preempt_count).
Unfortunately, it seems the way s390 does things doesn't let us initialize
every possible CPU's preempt_count early on, as the pages where this
resides are only allocated when a CPU is brought up and are freed when it
is brought down.
Let the arch-specific code set a CPU's preempt_count when its lowcore is
allocated, and turn init_idle_preempt_count() into an empty stub.
Fixes:
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| .. | ||
| fpu | ||
| trace | ||
| vdso | ||
| airq.h | ||
| alternative-asm.h | ||
| alternative.h | ||
| ap.h | ||
| appldata.h | ||
| archrandom.h | ||
| asm-const.h | ||
| asm-prototypes.h | ||
| atomic_ops.h | ||
| atomic.h | ||
| barrier.h | ||
| bitops.h | ||
| boot_data.h | ||
| bug.h | ||
| bugs.h | ||
| cache.h | ||
| ccwdev.h | ||
| ccwgroup.h | ||
| checksum.h | ||
| chpid.h | ||
| chsc.h | ||
| cio.h | ||
| clocksource.h | ||
| clp.h | ||
| cmb.h | ||
| cmpxchg.h | ||
| compat.h | ||
| cpacf.h | ||
| cpcmd.h | ||
| cpu_mcf.h | ||
| cpu_mf-insn.h | ||
| cpu_mf.h | ||
| cpu.h | ||
| cpufeature.h | ||
| cputime.h | ||
| crw.h | ||
| css_chars.h | ||
| ctl_reg.h | ||
| current.h | ||
| debug.h | ||
| delay.h | ||
| diag.h | ||
| dis.h | ||
| dma.h | ||
| dwarf.h | ||
| eadm.h | ||
| ebcdic.h | ||
| elf.h | ||
| entry-common.h | ||
| exec.h | ||
| extable.h | ||
| extmem.h | ||
| facility.h | ||
| fcx.h | ||
| ftrace.h | ||
| futex.h | ||
| gmap.h | ||
| hardirq.h | ||
| hugetlb.h | ||
| hw_irq.h | ||
| idals.h | ||
| idle.h | ||
| io.h | ||
| ipl.h | ||
| irq_work.h | ||
| irq.h | ||
| irqflags.h | ||
| isc.h | ||
| itcw.h | ||
| jump_label.h | ||
| kasan.h | ||
| Kbuild | ||
| kdebug.h | ||
| kexec.h | ||
| kprobes.h | ||
| kvm_host.h | ||
| kvm_para.h | ||
| linkage.h | ||
| livepatch.h | ||
| lowcore.h | ||
| mem_detect.h | ||
| mem_encrypt.h | ||
| mmu_context.h | ||
| mmu.h | ||
| mmzone.h | ||
| module.h | ||
| nmi.h | ||
| nospec-branch.h | ||
| nospec-insn.h | ||
| numa.h | ||
| os_info.h | ||
| page-states.h | ||
| page.h | ||
| pci_clp.h | ||
| pci_debug.h | ||
| pci_dma.h | ||
| pci_insn.h | ||
| pci_io.h | ||
| pci.h | ||
| percpu.h | ||
| perf_event.h | ||
| pgalloc.h | ||
| pgtable.h | ||
| pkey.h | ||
| pnet.h | ||
| preempt.h | ||
| processor.h | ||
| ptdump.h | ||
| ptrace.h | ||
| purgatory.h | ||
| qdio.h | ||
| runtime_instr.h | ||
| schid.h | ||
| sclp.h | ||
| scsw.h | ||
| seccomp.h | ||
| sections.h | ||
| serial.h | ||
| set_memory.h | ||
| setup.h | ||
| shmparam.h | ||
| signal.h | ||
| sigp.h | ||
| smp.h | ||
| softirq_stack.h | ||
| sparsemem.h | ||
| spinlock_types.h | ||
| spinlock.h | ||
| stacktrace.h | ||
| stp.h | ||
| string.h | ||
| switch_to.h | ||
| syscall_wrapper.h | ||
| syscall.h | ||
| sysinfo.h | ||
| termios.h | ||
| thread_info.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| topology.h | ||
| tpi.h | ||
| types.h | ||
| uaccess.h | ||
| unistd.h | ||
| unwind.h | ||
| uprobes.h | ||
| user.h | ||
| uv.h | ||
| vdso.h | ||
| vga.h | ||
| vmalloc.h | ||
| vmlinux.lds.h | ||
| vtime.h | ||
| vtimer.h | ||
| vx-insn.h | ||
| xor.h | ||