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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Mike Rapoport numa_clear_kernel_node_hotplug() function first traverses numa_meminfo regions to set node ID in memblock.reserved and than traverses memblock.reserved to update reserved_nodemask to include node IDs that were set in the first loop. Remove redundant traversal over memblock.reserved and update reserved_nodemask while iterating over numa_meminfo. Signed-off-by: Mike Rapoport --- arch/x86/mm/numa.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 8ee952038c80..4078abd33938 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -498,31 +498,25 @@ static void __init numa_clear_kernel_node_hotplug(void) * and use those ranges to set the nid in memblock.reserved. * This will split up the memblock regions along node * boundaries and will set the node IDs as well. + * + * The nid will also be set in reserved_nodemask which is later + * used to clear MEMBLOCK_HOTPLUG flag. + * + * [ Note, when booting with mem=nn[kMG] or in a kdump kernel, + * numa_meminfo might not include all memblock.reserved + * memory ranges, because quirks such as trim_snb_memory() + * reserve specific pages for Sandy Bridge graphics. + * These ranges will remain with nid == MAX_NUMNODES. ] */ for (i = 0; i < numa_meminfo.nr_blks; i++) { struct numa_memblk *mb = numa_meminfo.blk + i; int ret; ret = memblock_set_node(mb->start, mb->end - mb->start, &memblock.reserved, mb->nid); + node_set(mb->nid, reserved_nodemask); WARN_ON_ONCE(ret); } - /* - * Now go over all reserved memblock regions, to construct a - * node mask of all kernel reserved memory areas. - * - * [ Note, when booting with mem=nn[kMG] or in a kdump kernel, - * numa_meminfo might not include all memblock.reserved - * memory ranges, because quirks such as trim_snb_memory() - * reserve specific pages for Sandy Bridge graphics. ] - */ - for_each_memblock(reserved, mb_region) { - int nid = memblock_get_region_node(mb_region); - - if (nid != MAX_NUMNODES) - node_set(nid, reserved_nodemask); - } - /* * Finally, clear the MEMBLOCK_HOTPLUG flag for all memory * belonging to the reserved node mask. -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel