diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/memory.c | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 086997212dbb..96c80dfaac90 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -145,45 +145,6 @@ int memory_notify(unsigned long val, void *v) } /* - * The probe routines leave the pages uninitialized, just as the bootmem code - * does. Make sure we do not access them, but instead use only information from - * within sections. - */ -static bool pages_correctly_probed(unsigned long start_pfn) -{ - unsigned long section_nr = pfn_to_section_nr(start_pfn); - unsigned long section_nr_end = section_nr + sections_per_block; - unsigned long pfn = start_pfn; - - /* - * memmap between sections is not contiguous except with - * SPARSEMEM_VMEMMAP. We lookup the page once per section - * and assume memmap is contiguous within each section - */ - for (; section_nr < section_nr_end; section_nr++) { - if (WARN_ON_ONCE(!pfn_valid(pfn))) - return false; - - if (!present_section_nr(section_nr)) { - pr_warn("section %ld pfn[%lx, %lx) not present\n", - section_nr, pfn, pfn + PAGES_PER_SECTION); - return false; - } else if (!valid_section_nr(section_nr)) { - pr_warn("section %ld pfn[%lx, %lx) no valid memmap\n", - section_nr, pfn, pfn + PAGES_PER_SECTION); - return false; - } else if (online_section_nr(section_nr)) { - pr_warn("section %ld pfn[%lx, %lx) is already online\n", - section_nr, pfn, pfn + PAGES_PER_SECTION); - return false; - } - pfn += PAGES_PER_SECTION; - } - - return true; -} - -/* * MEMORY_HOTPLUG depends on SPARSEMEM in mm/Kconfig, so it is * OK to have direct references to sparsemem variables in here. */ @@ -199,9 +160,6 @@ memory_block_action(unsigned long start_section_nr, unsigned long action, switch (action) { case MEM_ONLINE: - if (!pages_correctly_probed(start_pfn)) - return -EBUSY; - ret = online_pages(start_pfn, nr_pages, online_type, nid); break; case MEM_OFFLINE: |