kernel/include/asm-generic/topology.h, branch linux-6.18.y

mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA

2021-06-29T17:53:55Z

After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA configuration options are equivalent. Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead. Done with $ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \ $(git grep -wl CONFIG_NEED_MULTIPLE_NODES) $ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \ $(git grep -wl NEED_MULTIPLE_NODES) with manual tweaks afterwards. [rppt@linux.ibm.com: fix arm boot crash] Link: https://lkml.kernel.org/r/YMj9vHhHOiCVN4BF@linux.ibm.com Link: https://lkml.kernel.org/r/20210608091316.3622-9-rppt@kernel.org Signed-off-by: Mike Rapoport Acked-by: Arnd Bergmann Acked-by: David Hildenbrand Cc: Geert Uytterhoeven Cc: Ivan Kokshaysky Cc: Jonathan Corbet Cc: Matt Turner Cc: Richard Henderson Cc: Vineet Gupta Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

include/asm-generic/topology.h: guard cpumask_of_node() macro argument

2020-05-28T18:35:41Z

drivers/hwmon/amd_energy.c:195:15: error: invalid operands to binary expression ('void' and 'int') (channel - data->nr_cpus)); ~~~~~~~~~^~~~~~~~~~~~~~~~~ include/asm-generic/topology.h:51:42: note: expanded from macro 'cpumask_of_node' #define cpumask_of_node(node) ((void)node, cpu_online_mask) ^~~~ include/linux/cpumask.h:618:72: note: expanded from macro 'cpumask_first_and' #define cpumask_first_and(src1p, src2p) cpumask_next_and(-1, (src1p), (src2p)) ^~~~~ Fixes: f0b848ce6fe9 ("cpumask: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask") Fixes: 8abee9566b7e ("hwmon: Add amd_energy driver to report energy counters") Signed-off-by: Arnd Bergmann Signed-off-by: Andrew Morton Acked-by: Guenter Roeck Link: http://lkml.kernel.org/r/20200527134623.930247-1-arnd@arndb.de Signed-off-by: Linus Torvalds

include/asm-generic/topology.h: remove unused parent_node() macro

2017-11-18T00:10:05Z

Commit a7be6e5a7f8d ("mm: drop useless local parameters of __register_one_node()") removed the last user of parent_node(). The parent_node() macro in generic situation is unnecessary. Remove it for cleanup. Link: http://lkml.kernel.org/r/1504234599-29533-8-git-send-email-douly.fnst@cn.fujitsu.com Signed-off-by: Dou Liyang Reported-by: Michael Ellerman Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

cpumask: fix spurious cpumask_of_node() on non-NUMA multi-node configs

2017-08-28T23:13:16Z

When !NUMA, cpumask_of_node(@node) equals cpu_online_mask regardless of @node. The assumption seems that if !NUMA, there shouldn't be more than one node and thus reporting cpu_online_mask regardless of @node is correct. However, that assumption was broken years ago to support DISCONTIGMEM and whether a system has multiple nodes or not is separately controlled by NEED_MULTIPLE_NODES. This means that, on a system with !NUMA && NEED_MULTIPLE_NODES, cpumask_of_node() will report cpu_online_mask for all possible nodes, indicating that the CPUs are associated with multiple nodes which is an impossible configuration. This bug has been around forever but doesn't look like it has caused any noticeable symptoms. However, it triggers a WARN recently added to workqueue to verify NUMA affinity configuration. Fix it by reporting empty cpumask on non-zero nodes if !NUMA. Signed-off-by: Tejun Heo Reported-and-tested-by: Geert Uytterhoeven Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds

topology: alternate fix for ia64 tiger_defconfig build breakage

2010-08-10T03:44:57Z

Define stubs for the numa_*_id() generic percpu related functions for non-NUMA configurations in where the other non-numa stubs live. Fixes ia64 !NUMA build breakage -- e.g., tiger_defconfig Back out now unneeded '#ifndef CONFIG_NUMA' guards from ia64 smpboot.c Signed-off-by: Lee Schermerhorn Tested-by: Tony Luck Acked-by: Tony Luck Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

numa: introduce numa_mem_id()- effective local memory node id

2010-05-27T16:12:57Z

Introduce numa_mem_id(), based on generic percpu variable infrastructure to track "nearest node with memory" for archs that support memoryless nodes. Define API in when CONFIG_HAVE_MEMORYLESS_NODES defined, else stubs. Architectures will define HAVE_MEMORYLESS_NODES if/when they support them. Archs can override definitions of: numa_mem_id() - returns node number of "local memory" node set_numa_mem() - initialize [this cpus'] per cpu variable 'numa_mem' cpu_to_mem() - return numa_mem for specified cpu; may be used as lvalue Generic initialization of 'numa_mem' occurs in __build_all_zonelists(). This will initialize the boot cpu at boot time, and all cpus on change of numa_zonelist_order, or when node or memory hot-plug requires zonelist rebuild. Archs that support memoryless nodes will need to initialize 'numa_mem' for secondary cpus as they're brought on-line. [akpm@linux-foundation.org: fix build] Signed-off-by: Lee Schermerhorn Signed-off-by: Christoph Lameter Cc: Tejun Heo Cc: Mel Gorman Cc: Christoph Lameter Cc: Nick Piggin Cc: David Rientjes Cc: Eric Whitney Cc: KAMEZAWA Hiroyuki Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: "Luck, Tony" Cc: Pekka Enberg Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

cpumask: remove obsolete node_to_cpumask now everyone uses cpumask_of_node

2009-09-24T00:04:34Z

Signed-off-by: Rusty Russell

cpumask: remove the now-obsoleted pcibus_to_cpumask(): generic

2009-03-30T11:35:17Z

Impact: reduce stack usage for large NR_CPUS cpumask_of_pcibus() is the new version. Signed-off-by: Rusty Russell

cpumask: remove node_to_first_cpu

2009-03-30T11:35:12Z

Everyone defines it, and only one person uses it (arch/mips/sgi-ip27/ip27-nmi.c). So just open code it there. Signed-off-by: Rusty Russell Cc: linux-mips@linux-mips.org

cpumask: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask

2008-12-13T10:50:27Z

Impact: New APIs The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these return a pointer to a struct cpumask. Part of removing cpumasks from the stack. This defines them in the generic non-NUMA case. Signed-off-by: Rusty Russell Cc: Benjamin Herrenschmidt Cc: Ingo Molnar Cc: Tony Luck Cc: Ralf Baechle Cc: Richard Henderson