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2024-09-03MIPS: sgi-ip27: ensure node_possible_map only contains valid nodesMike Rapoport (Microsoft)1-0/+2
For SGI IP27 machines node_possible_map is statically set to NODE_MASK_ALL and it is not updated during NUMA initialization. Ensure that it only contains nodes present in the system. Link: https://lkml.kernel.org/r/20240807064110.1003856-4-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [arm64 + CXL via QEMU] Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David S. Miller <davem@davemloft.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Rob Herring (Arm) <robh@kernel.org> Cc: Samuel Holland <samuel.holland@sifive.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2020-01-09MIPS: SGI-IP27: Store cpu speed when scanning for CPUs and use it laterThomas Bogendoerfer1-0/+2
Remember CPU speed while scanning for available CPUs to avoid looking it up a second time when printing CPU speed. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2020-01-09MIPS: SGI-IP27: Move all shared IP27 declarations to ip27-common.hThomas Bogendoerfer1-1/+0
Move all IP27 declarations into one file. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2020-01-09MIPS: SGI-IP27: get rid of asm/sn/sn0/ip27.hThomas Bogendoerfer1-1/+0
The only piece needed in ip27.h is SEND_NMI. Move the define to the only place where it's used and remove ip27.h Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2020-01-09MIPS: SGI-IP27: use asm/sn/agent.h for including HUB related stuffThomas Bogendoerfer1-2/+1
By including agent.h where hub related defines/structs are needed, we have only one place to select, which agent chip (HUB or BEDROCK) is used. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2020-01-09MIPS: SGI-IP27: use cpu physid already present while scanning for CPUsThomas Bogendoerfer1-18/+8
By using cpu physid already present when scanning for CPUs get_cpu_slice() is unsued and can be removed together with two other then used functions. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2019-11-01MIPS: SGI-IP27: replace MAX_COMPACT_NODE with MAX_NUMNODESThomas Bogendoerfer1-5/+1
MAX_COMPACT_NODE is a leftover from the compact node implementation, which is removed now. Use MAX_NUMNODES instead. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2019-10-23MIPS: SGI-IP27: collect externs in new header fileThomas Bogendoerfer1-2/+2
IP27 code has a few externs distributed over .c files. Collect them together into one commcon header file. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2019-10-07MIPS: SGI-IP27: get rid of compact node idsThomas Bogendoerfer1-56/+16
Node ids don't need to be contiguous in Linux, so the concept to use compact node ids to make them contiguous isn't needed at all. This patchset therefore removes it. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2019-02-19MIPS: SGI-IP27: do boot CPU init laterThomas Bogendoerfer1-2/+3
To make use of per_cpu variables in interrupt code per_cpu_init() must be done after setup_per_cpu_areas(). This is achieved by calling it in smp_prepare_boot_cpu() via a new smp_ops method. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2017-08-30MIPS: SMP: Allow boot_secondary SMP op to return errorsPaul Burton1-1/+2
Allow the boot_secondary SMP op to return an error to __cpu_up(), which will in turn return it to its caller. This will allow SMP implementations to return errors quickly in cases they they know have failed, rather than relying upon __cpu_up() eventually timing out waiting for the cpu_running completion. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/17014/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-29MIPS: SMP: Constify smp opsMatt Redfearn1-1/+1
smp_ops providers do not modify their ops structures, so they should be made const for robustness. Since currently the MIPS kernel is not mapped with memory protection, this does not in itself provide any security benefit, but it still makes sense to make this change. There are also slight code size efficincies from the structure being made read-only, saving 128 bytes of kernel text on a pistachio_defconfig. Before: text data bss dec hex filename 7187239 1772752 470224 9430215 8fe4c7 vmlinux After: text data bss dec hex filename 7187111 1772752 470224 9430087 8fe447 vmlinux Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Cc: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Huacai Chen <chenhc@lemote.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Doug Ledford <dledford@redhat.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Joe Perches <joe@perches.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Steven J. Hill <steven.hill@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/16784/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-03-08MIPS: Add missing include filesArnd Bergmann1-0/+3
After the split of linux/sched.h, several platforms in arch/mips stopped building. Add the respective additional #include statements to fix the problem I first tried adding these into asm/processor.h, but ran into circular header dependencies with that which I could not figure out. The commit I listed as causing the problem is the branch merge, as there is likely a combination of multiple patches in that branch. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org Cc: ralf@linux-mips.org Fixes: 1827adb11ad2 ("Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip") Link: http://lkml.kernel.org/r/20170308072931.3836696-1-arnd@arndb.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>Ingo Molnar1-0/+1
It's used only by a single (rarely used) inline function (task_node(p)), which we can move to <linux/sched/topology.h>. ( Add <linux/nodemask.h>, because we rely on that. ) Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-27MIPS: SMP: Remove plat_smp_ops cpus_done method.Ralf Baechle1-5/+0
Nothing was using the method and there isn't any need for this hook. This leaves smp_cpus_done() empty for the moment. As suggested by Paul Bolle <pebolle@tiscali.nl>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-07-14MIPS: Delete __cpuinit/__CPUINIT usage from MIPS codePaul Gortmaker1-3/+3
commit 3747069b25e419f6b51395f48127e9812abc3596 upstream. The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) and are flagged as __cpuinit -- so if we remove the __cpuinit from the arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit related content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. Here, we remove all the MIPS __cpuinit from C code and __CPUINIT from asm files. MIPS is interesting in this respect, because there are also uasm users hiding behind their own renamed versions of the __cpuinit macros. [1] https://lkml.org/lkml/2013/5/20/589 [ralf@linux-mips.org: Folded in Paul's followup fix.] Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5494/ Patchwork: https://patchwork.linux-mips.org/patch/5495/ Patchwork: https://patchwork.linux-mips.org/patch/5509/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-02-01MIPS: Whitespace cleanup.Ralf Baechle1-2/+2
Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-29remove references to cpu_*_map in arch/Rusty Russell1-1/+1
This has been obsolescent for a while; time for the final push. In adjacent context, replaced old cpus_* with cpumask_*. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: David S. Miller <davem@davemloft.net> (arch/sparc) Acked-by: Chris Metcalf <cmetcalf@tilera.com> (arch/tile) Cc: user-mode-linux-devel@lists.sourceforge.net Cc: Russell King <linux@arm.linux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Cc: Richard Kuo <rkuo@codeaurora.org> Cc: linux-hexagon@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: sparclinux@vger.kernel.org
2009-09-30MIPS: SMP: Fix build.Ralf Baechle1-1/+1
commit 48a048fed82a8e5fdd8618574f6d3de1a0d67a50 Author: Rusty Russell <rusty@rustcorp.com.au> Date: Thu Sep 24 09:34:44 2009 -0600 apparently only passed the "looks good" level of QA ;-) Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-24cpumask: arch_send_call_function_ipi_mask: mipsRusty Russell1-2/+2
We're weaning the core code off handing cpumask's around on-stack. This introduces arch_send_call_function_ipi_mask(), and by defining it, the old arch_send_call_function_ipi is defined by the core code. We also take the chance to wean the implementations off the obsolescent for_each_cpu_mask(): making send_ipi_mask take the pointer seemed the most natural way to ensure all implementations used for_each_cpu. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-03-30trivial: Fix misspelling of firmwareNick Andrew1-1/+1
Fix misspelling of firmware. Signed-off-by: Nick Andrew <nick@nick-andrew.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-12-13cpumask: centralize cpu_online_map and cpu_possible_mapRusty Russell1-1/+1
Impact: cleanup Each SMP arch defines these themselves. Move them to a central location. Twists: 1) Some archs (m32, parisc, s390) set possible_map to all 1, so we add a CONFIG_INIT_ALL_POSSIBLE for this rather than break them. 2) mips and sparc32 '#define cpu_possible_map phys_cpu_present_map'. Those archs simply have phys_cpu_present_map replaced everywhere. 3) Alpha defined cpu_possible_map to cpu_present_map; this is tricky so I just manipulate them both in sync. 4) IA64, cris and m32r have gratuitous 'extern cpumask_t cpu_possible_map' declarations. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Tested-by: Tony Luck <tony.luck@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Mike Travis <travis@sgi.com> Cc: ink@jurassic.park.msu.ru Cc: rmk@arm.linux.org.uk Cc: starvik@axis.com Cc: tony.luck@intel.com Cc: takata@linux-m32r.org Cc: ralf@linux-mips.org Cc: grundler@parisc-linux.org Cc: paulus@samba.org Cc: schwidefsky@de.ibm.com Cc: lethal@linux-sh.org Cc: wli@holomorphy.com Cc: davem@davemloft.net Cc: jdike@addtoit.com Cc: mingo@redhat.com
2008-06-05[MIPS] IP27: Fix clockevent setupThomas Bogendoerfer1-1/+4
Fix breakage introduced by converting hub_rt to clockevent. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29[MIPS] SMP: Call platform methods via ops structure.Ralf Baechle1-45/+64
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11[MIPS] checkfiles: Fix "need space after that ','" errors.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11[MIPS] Remove IP27 specific structures from struct cpuinfo_mipsRalf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-27[MIPS] SMP: Scatter __cpuinit over the code as needed.Ralf Baechle1-2/+2
MIPS doesn't do CPU hotplugging yet but since many of the functions don't even have an __init let's fix this right. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-31[MIPS] IP27: Fix modpost warning.Ralf Baechle1-1/+1
MODPOST vmlinux.o WARNING: vmlinux.o(.text+0x3180): Section mismatch: reference to .init.text:per_cpu_init (between 'prom_init_secondary' and 'alloc_cpupda') Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-27[MIPS] SMP: Fix initialization order bug.Ralf Baechle1-1/+6
A recent change requires cpu_possible_map to be initialized before smp_sched_init() but most MIPS platforms were initializing their processors in the prom_prepare_cpus callback of smp_prepare_cpus. The simple fix of calling prom_prepare_cpus from one of the earlier SMP initialization hooks doesn't work well either since IPIs may require init_IRQ() to have completed, so bit the bullet and split prom_prepare_cpus into two initialization functions, plat_smp_setup which is called early from setup_arch and plat_prepare_cpus called where prom_prepare_cpus used to be called. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-12[PATCH] mips: task_thread_info()Al Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29Replace the complicated and broken attempt to clean interrupt byRalf Baechle1-16/+4
something simple - doesn't need to be fast, after all. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29It's unwise to disable all interrupts of the boot node ;-)Ralf Baechle1-1/+4
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds1-0/+225
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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