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Thiago Jung Bauermann 6b2c08f989 powerpc: Don't call lockdep_assert_cpus_held() from arch_update_cpu_topology() ... It turns out that not all paths calling arch_update_cpu_topology() hold cpu_hotplug_lock, but that's OK because those paths can't race with any concurrent hotplug events. Warnings were reported with the following trace: lockdep_assert_cpus_held arch_update_cpu_topology sched_init_domains sched_init_smp kernel_init_freeable kernel_init ret_from_kernel_thread Which is safe because it's called early in boot when hotplug is not live yet. And also this trace: lockdep_assert_cpus_held arch_update_cpu_topology partition_sched_domains cpuset_update_active_cpus sched_cpu_deactivate cpuhp_invoke_callback cpuhp_down_callbacks cpuhp_thread_fun smpboot_thread_fn kthread ret_from_kernel_thread Which is safe because it's called as part of CPU hotplug, so although we don't hold the CPU hotplug lock, there is another thread driving the CPU hotplug operation which does hold the lock, and there is no race. Thanks to tglx for deciphering it for us. Fixes: 3e401f7a2e ("powerpc: Only obtain cpu_hotplug_lock if called by rtasd") Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		7 years ago
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8xx_mmu.c	…
40x_mmu.c	…
44x_mmu.c	…
Makefile	powerpc/mm: Make switch_mm_irqs_off() out of line	7 years ago
copro_fault.c	…
dma-noncoherent.c	…
dump_hashpagetable.c	powerpc/mm: Use seq_putc() in two functions	7 years ago
dump_linuxpagetables.c	powerpc/mm: Use seq_putc() in two functions	7 years ago
fault.c	…
fsl_booke_mmu.c	…
hash64_4k.c	…
hash64_64k.c	…
hash_low_32.S	powerpc: fix location of two EXPORT_SYMBOL	7 years ago
hash_native_64.c	…
hash_utils_64.c	powerpc/mm: Use mm_is_thread_local() instread of open-coding	7 years ago
highmem.c	…
hugepage-hash64.c	…
hugetlbpage-book3e.c	…
hugetlbpage-hash64.c	…
hugetlbpage-radix.c	…
hugetlbpage.c	powerpc/mm: Use mm_is_thread_local() instread of open-coding	7 years ago
init-common.c	…
init_32.c	…
init_64.c	…
mem.c	…
mmap.c	…
mmu_context.c	powerpc/mm: Make switch_mm_irqs_off() out of line	7 years ago
mmu_context_book3s64.c	powerpc/mm: Optimize detection of thread local mm's	7 years ago
mmu_context_hash32.c	…
mmu_context_iommu.c	…
mmu_context_nohash.c	…
mmu_decl.h	…
numa.c	powerpc: Don't call lockdep_assert_cpus_held() from arch_update_cpu_topology()	7 years ago
pgtable-book3e.c	…
pgtable-book3s64.c	…
pgtable-hash64.c	powerpc/mm: Use mm_is_thread_local() instread of open-coding	7 years ago
pgtable-radix.c	powerpc/mm/radix: Prettify mapped memory range print out	7 years ago
pgtable.c	…
pgtable_32.c	powerpc/mm: Call flush_tlb_kernel_range with interrupts enabled	7 years ago
pgtable_64.c	…
ppc_mmu_32.c	…
slb.c	…
slb_low.S	…
slice.c	…
subpage-prot.c	…
tlb-radix.c	…
tlb_hash32.c	…
tlb_hash64.c	powerpc/mm: Use mm_is_thread_local() instread of open-coding	7 years ago
tlb_low_64e.S	…
tlb_nohash.c	…
tlb_nohash_low.S	…
vphn.c	…
vphn.h	…