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    SubjectRe: [PATCH v2 00/11] Optimization to improve CPU online/offline on Powerpc
    Date
    On Mon, 21 Sep 2020 15:26:42 +0530, Srikar Dronamraju wrote:
    > Here are some optimizations and fixes to make CPU online/offline
    > faster and hence result in faster bootup.
    >
    > Its based on top of my v5 coregroup support patchset.
    > https://lore.kernel.org/linuxppc-dev/20200810071834.92514-1-srikar@linux.vnet.ibm.com/t/#u
    >
    > Anton reported that his 4096 cpu (1024 cores in a socket) was taking too
    > long to boot. He also analyzed that most of the time was being spent on
    > updating cpu_core_mask.
    >
    > [...]

    Applied to powerpc/next.

    [01/11] powerpc/topology: Update topology_core_cpumask
    https://git.kernel.org/powerpc/c/4bce545903fa0290e011cf118997717f0c4f4d20
    [02/11] powerpc/smp: Stop updating cpu_core_mask
    https://git.kernel.org/powerpc/c/4ca234a9cbd7c3a656b34dd98c8b156f70ed7849
    [03/11] powerpc/smp: Remove get_physical_package_id
    https://git.kernel.org/powerpc/c/e29e9ed665eeb6f98cd88672994ecf4aaefdb943
    [04/11] powerpc/smp: Optimize remove_cpu_from_masks
    https://git.kernel.org/powerpc/c/70edd4a7c753ba18e3e4bb9e97b6d85156cea738
    [05/11] powerpc/smp: Limit CPUs traversed to within a node.
    https://git.kernel.org/powerpc/c/53516d4abacfab1faaa075c1f79957abc3da358c
    [06/11] powerpc/smp: Stop passing mask to update_mask_by_l2
    https://git.kernel.org/powerpc/c/1f3a4181042107e32e44047e9dde990aced845b5
    [07/11] powerpc/smp: Depend on cpu_l1_cache_map when adding CPUs
    https://git.kernel.org/powerpc/c/661e3d42f99193b7fdd71467a87e48f6e597c285
    [08/11] powerpc/smp: Check for duplicate topologies and consolidate
    https://git.kernel.org/powerpc/c/375370a10d061d5c75c6bc5b09c5db4cc0b0fcfe
    [09/11] powerpc/smp: Optimize update_mask_by_l2
    https://git.kernel.org/powerpc/c/3ab33d6dc3e98e83b55732049e1d1d488207bb6d
    [10/11] powerpc/smp: Move coregroup mask updation to a new function
    https://git.kernel.org/powerpc/c/b8a97cb4599cda28bd3b3bc13042f5803b42ad65
    [11/11] powerpc/smp: Optimize update_coregroup_mask
    https://git.kernel.org/powerpc/c/70a94089d7f7fa91bc1795622426b3ed017ec71a

    cheers

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