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2019-08-05arm64: Replace strncmp with str_has_prefixChuhong Yuan1-1/+1
In commit b6b2735514bc ("tracing: Use str_has_prefix() instead of using fixed sizes") the newly introduced str_has_prefix() was used to replace error-prone strncmp(str, const, len). Here fix codes with the same pattern. Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Signed-off-by: Will Deacon <will@kernel.org>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234Thomas Gleixner1-12/+1
Based on 1 normalized pattern(s): 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 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 see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-03arm64/mm: fix kernel-doc commentsQian Cai1-13/+12
Building a kernel with W=1 generates several warnings due to abuse of kernel-doc comments: | arch/arm64/mm/numa.c:281: warning: Cannot understand * | on line 281 - I thought it was a doc line Tidy up the comments to remove the warnings. Fixes: 1a2db300348b ("arm64, numa: Add NUMA support for arm64 platforms.") Signed-off-by: Qian Cai <cai@lca.pw> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-03-12memblock: memblock_phys_alloc_try_nid(): don't panicMike Rapoport1-0/+4
The memblock_phys_alloc_try_nid() function tries to allocate memory from the requested node and then falls back to allocation from any node in the system. The memblock_alloc_base() fallback used by this function panics if the allocation fails. Replace the memblock_alloc_base() fallback with the direct call to memblock_alloc_range_nid() and update the memblock_phys_alloc_try_nid() callers to check the returned value and panic in case of error. Link: http://lkml.kernel.org/r/1548057848-15136-7-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Christoph Hellwig <hch@lst.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dennis Zhou <dennis@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Guo Ren <ren_guo@c-sky.com> [c-sky] Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Juergen Gross <jgross@suse.com> [Xen] Cc: Mark Salter <msalter@redhat.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Burton <paul.burton@mips.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Rob Herring <robh@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-05numa: make "nr_node_ids" unsigned intAlexey Dobriyan1-1/+1
Number of NUMA nodes can't be negative. This saves a few bytes on x86_64: add/remove: 0/0 grow/shrink: 4/21 up/down: 27/-265 (-238) Function old new delta hv_synic_alloc.cold 88 110 +22 prealloc_shrinker 260 262 +2 bootstrap 249 251 +2 sched_init_numa 1566 1567 +1 show_slab_objects 778 777 -1 s_show 1201 1200 -1 kmem_cache_init 346 345 -1 __alloc_workqueue_key 1146 1145 -1 mem_cgroup_css_alloc 1614 1612 -2 __do_sys_swapon 4702 4699 -3 __list_lru_init 655 651 -4 nic_probe 2379 2374 -5 store_user_store 118 111 -7 red_zone_store 106 99 -7 poison_store 106 99 -7 wq_numa_init 348 338 -10 __kmem_cache_empty 75 65 -10 task_numa_free 186 173 -13 merge_across_nodes_store 351 336 -15 irq_create_affinity_masks 1261 1246 -15 do_numa_crng_init 343 321 -22 task_numa_fault 4760 4737 -23 swapfile_init 179 156 -23 hv_synic_alloc 536 492 -44 apply_wqattrs_prepare 746 695 -51 Link: http://lkml.kernel.org/r/20190201223029.GA15820@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-12-12arm64: Add memory hotplug supportRobin Murphy1-0/+10
Wire up the basic support for hot-adding memory. Since memory hotplug is fairly tightly coupled to sparsemem, we tweak pfn_valid() to also cross-check the presence of a section in the manner of the generic implementation, before falling back to memblock to check for no-map regions within a present section as before. By having arch_add_memory(() create the linear mapping first, this then makes everything work in the way that __add_section() expects. We expect hotplug to be ACPI-driven, so the swapper_pg_dir updates should be safe from races by virtue of the global device hotplug lock. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-10-31mm: remove include/linux/bootmem.hMike Rapoport1-1/+0
Move remaining definitions and declarations from include/linux/bootmem.h into include/linux/memblock.h and remove the redundant header. The includes were replaced with the semantic patch below and then semi-automated removal of duplicated '#include <linux/memblock.h> @@ @@ - #include <linux/bootmem.h> + #include <linux/memblock.h> [sfr@canb.auug.org.au: dma-direct: fix up for the removal of linux/bootmem.h] Link: http://lkml.kernel.org/r/20181002185342.133d1680@canb.auug.org.au [sfr@canb.auug.org.au: powerpc: fix up for removal of linux/bootmem.h] Link: http://lkml.kernel.org/r/20181005161406.73ef8727@canb.auug.org.au [sfr@canb.auug.org.au: x86/kaslr, ACPI/NUMA: fix for linux/bootmem.h removal] Link: http://lkml.kernel.org/r/20181008190341.5e396491@canb.auug.org.au Link: http://lkml.kernel.org/r/1536927045-23536-30-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Serge Semin <fancer.lancer@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-31memblock: remove _virt from APIs returning virtual addressMike Rapoport1-1/+1
The conversion is done using sed -i 's@memblock_virt_alloc@memblock_alloc@g' \ $(git grep -l memblock_virt_alloc) Link: http://lkml.kernel.org/r/1536927045-23536-8-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Serge Semin <fancer.lancer@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-31memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc*Mike Rapoport1-1/+1
Make it explicit that the caller gets a physical address rather than a virtual one. This will also allow using meblock_alloc prefix for memblock allocations returning virtual address, which is done in the following patches. The conversion is done using the following semantic patch: @@ expression e1, e2, e3; @@ ( - memblock_alloc(e1, e2) + memblock_phys_alloc(e1, e2) | - memblock_alloc_nid(e1, e2, e3) + memblock_phys_alloc_nid(e1, e2, e3) | - memblock_alloc_try_nid(e1, e2, e3) + memblock_phys_alloc_try_nid(e1, e2, e3) ) Link: http://lkml.kernel.org/r/1536927045-23536-7-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Serge Semin <fancer.lancer@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-01arm64/numa: Unify common error path in numa_init()Anshuman Khandual1-4/+7
At present numa_free_distance() is being called before numa_distance is even initialized with numa_alloc_distance() which is really pointless. Instead lets call numa_free_distance() on the common error path inside numa_init() after numa_alloc_distance() has been successful. Fixes: 1a2db30034 ("arm64, numa: Add NUMA support for arm64 platforms") Acked-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-10-01arm64/numa: Report correct memblock range for the dummy nodeAnshuman Khandual1-1/+1
The dummy node ID is marked into all memory ranges on the system. So the dummy node really extends the entire memblock.memory. Hence report correct extent information for the dummy node using memblock range helper functions instead of the range [0LLU, PFN_PHYS(max_pfn) - 1)]. Fixes: 1a2db30034 ("arm64, numa: Add NUMA support for arm64 platforms") Acked-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-07-06arm64: numa: separate out updates to percpu nodeid and NUMA node cpumapSudeep Holla1-8/+21
Currently numa_clear_node removes both cpu information from the NUMA node cpumap as well as the NUMA node id from the cpu. Similarly numa_store_cpu_info updates both percpu nodeid and NUMA cpumap. However we need to retain the numa node id for the cpu and only remove the cpu information from the numa node cpumap during CPU hotplug out. The same can be extended for hotplugging in the CPU. This patch separates out numa_{add,remove}_cpu from numa_clear_node and numa_store_cpu_info. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Reviewed-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> Tested-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-07-20arm64/numa: Drop duplicate messagePunit Agrawal1-6/+1
When booting linux on a system without CONFIG_NUMA enabled, the following messages are printed during boot - NUMA: Faking a node at [mem 0x0000000000000000-0x00000083ffffffff] NUMA: Adding memblock [0x8000000000 - 0x8000e7ffff] on node 0 NUMA: Adding memblock [0x8000e80000 - 0x83f65cffff] on node 0 NUMA: Adding memblock [0x83f65d0000 - 0x83f665ffff] on node 0 NUMA: Adding memblock [0x83f6660000 - 0x83f676ffff] on node 0 NUMA: Adding memblock [0x83f6770000 - 0x83f678ffff] on node 0 NUMA: Adding memblock [0x83f6790000 - 0x83fb82ffff] on node 0 NUMA: Adding memblock [0x83fb830000 - 0x83fbc0ffff] on node 0 NUMA: Adding memblock [0x83fbc10000 - 0x83fbdfffff] on node 0 NUMA: Adding memblock [0x83fbe00000 - 0x83fbffffff] on node 0 NUMA: Adding memblock [0x83fc000000 - 0x83fffbffff] on node 0 NUMA: Adding memblock [0x83fffc0000 - 0x83fffdffff] on node 0 NUMA: Adding memblock [0x83fffe0000 - 0x83ffffffff] on node 0 NUMA: Initmem setup node 0 [mem 0x8000000000-0x83ffffffff] NUMA: NODE_DATA [mem 0x83fffec500-0x83fffedfff] The information is then duplicated by core kernel messages right after the above output. Early memory node ranges node 0: [mem 0x0000008000000000-0x0000008000e7ffff] node 0: [mem 0x0000008000e80000-0x00000083f65cffff] node 0: [mem 0x00000083f65d0000-0x00000083f665ffff] node 0: [mem 0x00000083f6660000-0x00000083f676ffff] node 0: [mem 0x00000083f6770000-0x00000083f678ffff] node 0: [mem 0x00000083f6790000-0x00000083fb82ffff] node 0: [mem 0x00000083fb830000-0x00000083fbc0ffff] node 0: [mem 0x00000083fbc10000-0x00000083fbdfffff] node 0: [mem 0x00000083fbe00000-0x00000083fbffffff] node 0: [mem 0x00000083fc000000-0x00000083fffbffff] node 0: [mem 0x00000083fffc0000-0x00000083fffdffff] node 0: [mem 0x00000083fffe0000-0x00000083ffffffff] Initmem setup node 0 [mem 0x0000008000000000-0x00000083ffffffff] Remove the duplication of memblock layout information printed during boot by dropping the messages from arm64 numa initialisation. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-12-15ACPI/NUMA: Do not map pxm to node when NUMA is turned offBoris Ostrovsky1-1/+1
acpi_map_pxm_to_node() unconditially maps nodes even when NUMA is turned off. So acpi_get_node() might return a node > 0, which is fatal when NUMA is disabled as the rest of the kernel assumes that only node 0 exists. Expose numa_off to the acpi code and return NUMA_NO_NODE when it's set. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: linux-ia64@vger.kernel.org Cc: catalin.marinas@arm.com Cc: rjw@rjwysocki.net Cc: will.deacon@arm.com Cc: linux-acpi@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: lenb@kernel.org Link: http://lkml.kernel.org/r/1481602709-18260-1-git-send-email-boris.ostrovsky@oracle.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-26arm64/numa: fix incorrect log for memory-less nodeHanjun Guo1-2/+5
When booting on NUMA system with memory-less node (no memory dimm on this memory controller), the print for setup_node_data() is incorrect: NUMA: Initmem setup node 2 [mem 0x00000000-0xffffffffffffffff] It can be fixed by printing [mem 0x00000000-0x00000000] when end_pfn is 0, but print <memory-less node> will be more useful. Fixes: 1a2db300348b ("arm64, numa: Add NUMA support for arm64 platforms.") Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-10-26arm64/numa: fix pcpu_cpu_distance() to get correct CPU proximityYisheng Xie1-1/+1
The pcpu_build_alloc_info() function group CPUs according to their proximity, by call callback function @cpu_distance_fn from different ARCHs. For arm64 the callback of @cpu_distance_fn is pcpu_cpu_distance(from, to) -> node_distance(from, to) The @from and @to for function node_distance() should be nid. However, pcpu_cpu_distance() in arch/arm64/mm/numa.c just past the cpu id for @from and @to, and didn't convert to numa node id. For this incorrect cpu proximity get from ARCH, it may cause each CPU in one group and make group_cnt out of bound: setup_per_cpu_areas() pcpu_embed_first_chunk() pcpu_build_alloc_info() in pcpu_build_alloc_info, since cpu_distance_fn will return REMOTE_DISTANCE if we pass cpu ids (0,1,2...), so cpu_distance_fn(cpu, tcpu) > LOCAL_DISTANCE will wrongly be ture. This may results in triggering the BUG_ON(unit != nr_units) later: [ 0.000000] kernel BUG at mm/percpu.c:1916! [ 0.000000] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.9.0-rc1-00003-g14155ca-dirty #26 [ 0.000000] Hardware name: Hisilicon Hi1616 Evaluation Board (DT) [ 0.000000] task: ffff000008d6e900 task.stack: ffff000008d60000 [ 0.000000] PC is at pcpu_embed_first_chunk+0x420/0x704 [ 0.000000] LR is at pcpu_embed_first_chunk+0x3bc/0x704 [ 0.000000] pc : [<ffff000008c754f4>] lr : [<ffff000008c75490>] pstate: 800000c5 [ 0.000000] sp : ffff000008d63eb0 [ 0.000000] x29: ffff000008d63eb0 [ 0.000000] x28: 0000000000000000 [ 0.000000] x27: 0000000000000040 [ 0.000000] x26: ffff8413fbfcef00 [ 0.000000] x25: 0000000000000042 [ 0.000000] x24: 0000000000000042 [ 0.000000] x23: 0000000000001000 [ 0.000000] x22: 0000000000000046 [ 0.000000] x21: 0000000000000001 [ 0.000000] x20: ffff000008cb3bc8 [ 0.000000] x19: ffff8413fbfcf570 [ 0.000000] x18: 0000000000000000 [ 0.000000] x17: ffff000008e49ae0 [ 0.000000] x16: 0000000000000003 [ 0.000000] x15: 000000000000001e [ 0.000000] x14: 0000000000000004 [ 0.000000] x13: 0000000000000000 [ 0.000000] x12: 000000000000006f [ 0.000000] x11: 00000413fbffff00 [ 0.000000] x10: 0000000000000004 [ 0.000000] x9 : 0000000000000000 [ 0.000000] x8 : 0000000000000001 [ 0.000000] x7 : ffff8413fbfcf63c [ 0.000000] x6 : ffff000008d65d28 [ 0.000000] x5 : ffff000008d65e50 [ 0.000000] x4 : 0000000000000000 [ 0.000000] x3 : ffff000008cb3cc8 [ 0.000000] x2 : 0000000000000040 [ 0.000000] x1 : 0000000000000040 [ 0.000000] x0 : 0000000000000000 [...] [ 0.000000] Call trace: [ 0.000000] Exception stack(0xffff000008d63ce0 to 0xffff000008d63e10) [ 0.000000] 3ce0: ffff8413fbfcf570 0001000000000000 ffff000008d63eb0 ffff000008c754f4 [ 0.000000] 3d00: ffff000008d63d50 ffff0000081af210 00000413fbfff010 0000000000001000 [ 0.000000] 3d20: ffff000008d63d50 ffff0000081af220 00000413fbfff010 0000000000001000 [ 0.000000] 3d40: 00000413fbfcef00 0000000000000004 ffff000008d63db0 ffff0000081af390 [ 0.000000] 3d60: 00000413fbfcef00 0000000000001000 0000000000000000 0000000000001000 [ 0.000000] 3d80: 0000000000000000 0000000000000040 0000000000000040 ffff000008cb3cc8 [ 0.000000] 3da0: 0000000000000000 ffff000008d65e50 ffff000008d65d28 ffff8413fbfcf63c [ 0.000000] 3dc0: 0000000000000001 0000000000000000 0000000000000004 00000413fbffff00 [ 0.000000] 3de0: 000000000000006f 0000000000000000 0000000000000004 000000000000001e [ 0.000000] 3e00: 0000000000000003 ffff000008e49ae0 [ 0.000000] [<ffff000008c754f4>] pcpu_embed_first_chunk+0x420/0x704 [ 0.000000] [<ffff000008c6658c>] setup_per_cpu_areas+0x38/0xc8 [ 0.000000] [<ffff000008c608d8>] start_kernel+0x10c/0x390 [ 0.000000] [<ffff000008c601d8>] __primary_switched+0x5c/0x64 [ 0.000000] Code: b8018660 17ffffd7 6b16037f 54000080 (d4210000) [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task! Fix by getting cpu's node id with early_cpu_to_node() then pass it to node_distance() as the original intention. Fixes: 7af3a0a99252 ("arm64/numa: support HAVE_SETUP_PER_CPU_AREA") Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09arm64/numa: remove the limitation that cpu0 must bind to node0Zhen Lei1-6/+10
1. Remove the old binding code. 2. Read the nid of cpu0 from dts. 3. Fallback the nid of cpu0 to 0 when numa=off is set in bootargs. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09arm64/numa: remove some useless codeZhen Lei1-4/+0
When the deleted code is executed, only the bit of cpu0 was set on cpu_possible_mask. So that, only set_cpu_numa_node(0, NUMA_NO_NODE); will be executed. And map_cpu_to_node(0, 0) will soon be called. So these code can be safely removed. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09arm64/numa: support HAVE_SETUP_PER_CPU_AREAZhen Lei1-0/+52
To make each percpu area allocated from its local numa node. Without this patch, all percpu areas will be allocated from the node which cpu0 belongs to. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09arm64: numa: Use pr_fmt()Kefeng Wang1-19/+18
Use pr_fmt to prefix kernel output, and remove duplicated msg of NUMA turned off. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09arm64/numa: avoid inconsistent information to be printedZhen Lei1-3/+3
numa_init may return error because of numa configuration error. So "No NUMA configuration found" is inaccurate. In fact, specific configuration error information should be immediately printed by the testing branch. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-08-17arm64: Fix NUMA build error when !CONFIG_ACPICatalin Marinas1-0/+2
Since asm/acpi.h is only included by linux/acpi.h when CONFIG_ACPI is enabled, disabling the latter leads to the following build error on arm64: arch/arm64/mm/numa.c: In function ‘arm64_numa_init’: arch/arm64/mm/numa.c:395:24: error: ‘arm64_acpi_numa_init’ undeclared (first use in this function) if (!acpi_disabled && !numa_init(arm64_acpi_numa_init)) This patch include the asm/acpi.h explicitly in arch/arm64/mm/numa.c for the arm64_acpi_numa_init() definition. Fixes: d8b47fca8c23 ("arm64, ACPI, NUMA: NUMA support based on SRAT and SLIT") Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-05-30arm64, ACPI, NUMA: NUMA support based on SRAT and SLITHanjun Guo1-1/+4
Introduce a new file to hold ACPI based NUMA information parsing from SRAT and SLIT. SRAT includes the CPU ACPI ID to Proximity Domain mappings and memory ranges to Proximity Domain mapping. SLIT has the information of inter node distances(relative number for access latency). Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> [rrichter@cavium.com Reworked for numa v10 series ] Signed-off-by: Robert Richter <rrichter@cavium.com> [david.daney@cavium.com reorderd and combinded with other patches in Hanjun Guo's original set, removed get_mpidr_in_madt() and use acpi_map_madt_entry() instead.] Signed-off-by: David Daney <david.daney@cavium.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Dennis Chen <dennis.chen@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-30arm64, NUMA: Cleanup NUMA disabled messagesDavid Daney1-4/+7
As noted by Dennis Chen, we don't want to print "No NUMA configuration found" if NUMA was forced off from the command line. Change the type of numa_off to bool, and clean up printing code. Print "NUMA disabled" if forced off on command line and "No NUMA configuration found" if there was no firmware NUMA information. Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Dennis Chen <dennis.chen@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-30arm64, NUMA: rework numa_add_memblk()Hanjun Guo1-6/+6
Rework numa_add_memblk() to update the parameter "u64 size" to "u64 end", this will make it consistent with x86 and simplifies the arm64 ACPI NUMA code to be added later. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Robert Richter <rrichter@cavium.com> Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-15arm64, numa: Add NUMA support for arm64 platforms.Ganapatrao Kulkarni1-0/+396
Attempt to get the memory and CPU NUMA node via of_numa. If that fails, default the dummy NUMA node and map all memory and CPUs to node 0. Tested-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Robert Richter <rrichter@cavium.com> Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 10:49:50 +0000