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DKconfig.debug8 by not allocating this extra memory according to boottime
18 Depending on runtime enablement, this results in a small or large
30 the patterns before alloc_pages(). Additionally, this option cannot
35 By default this option will have a small overhead, e.g. by not
57 help to find bare alloc_page(s) leaks. Even if you include this
74 help to find page migration failures. Even if you include this
95 "init_on_free=1" instead of enabling this.
107 careful when enabling this feature because it adds about 30 KB to the
131 Look for a message in dmesg output like this:
135 or like this, if the check failed:
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DKconfig34 If unsure, choose this option (Flat Memory) over any other.
42 in their physical address spaces, and this option provides
49 If unsure, choose "Sparse Memory" over this option.
62 If unsure, choose "Flat Memory" over this option.
93 # allocations when sparse_init() is called. If this cannot
94 # be done on your architecture, select this option. However,
106 # must select this option. This is usually for architecture platforms with
152 # eventually, we can have this option just 'select SPARSEMEM'
188 # space can be handled with less contention: split it at this NR_CPUS.
241 disable this option unless there really is a strong reason for
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Dmemblock.c509 struct memblock_region *this = &type->regions[i]; in memblock_merge_regions() local
512 if (this->base + this->size != next->base || in memblock_merge_regions()
513 memblock_get_region_node(this) != in memblock_merge_regions()
515 this->flags != next->flags) { in memblock_merge_regions()
516 BUG_ON(this->base + this->size > next->base); in memblock_merge_regions()
521 this->size += next->size; in memblock_merge_regions()
Dvmstat.c119 struct vm_event_state *this = &per_cpu(vm_event_states, cpu); in sum_vm_events() local
122 ret[i] += this->event[i]; in sum_vm_events()