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888a589f6b
linux/mm
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Yinghai Lu 888a589f6b mm, x86: remove MEMORY_HOTPLUG_RESERVE related code 
after:

 | commit b263295dbf
 | Author: Christoph Lameter <clameter@sgi.com>
 | Date:   Wed Jan 30 13:30:47 2008 +0100
 |
 |    x86: 64-bit, make sparsemem vmemmap the only memory model

we don't have MEMORY_HOTPLUG_RESERVE anymore.

Historically, x86-64 had an architecture-specific method for memory hotplug
whereby it scanned the SRAT for physical memory ranges that could be
potentially used for memory hot-add later. By reserving those ranges
without physical memory, the memmap would be allocated and left dormant
until needed. This depended on the DISCONTIG memory model which has been
removed so the code implementing HOTPLUG_RESERVE is now dead.

This patch removes the dead code used by MEMORY_HOTPLUG_RESERVE.

(Changelog authored by Mel.)

v2: updated changelog, and remove hotadd= in doc

[ Impact: remove dead code ]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: Mel Gorman <mel@csn.ul.ie>
Workflow-found-OK-by: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <4A0C4910.7090508@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-18 09:13:31 +02:00
..
allocpercpu.c percpu: __percpu_depopulate_mask can take a const mask 2009-04-06 13:44:15 -07:00
backing-dev.c block: change the request allocation/congestion logic to be sync/async based 2009-04-06 08:04:53 -07:00
bootmem.c bootmem, x86: further fixes for arch-specific bootmem wrapping 2009-03-01 16:06:56 +09:00
bounce.c
debug-pagealloc.c generic debug pagealloc 2009-04-01 08:59:13 -07:00
dmapool.c
fadvise.c [CVE-2009-0029] System call wrapper special cases 2009-01-14 14:15:18 +01:00
failslab.c kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c 2009-04-03 12:23:01 +02:00
filemap_xip.c mm: do_xip_mapping_read: fix length calculation 2009-04-02 19:04:49 -07:00
filemap.c Export filemap_write_and_wait_range 2009-04-16 07:47:49 -07:00
fremap.c Do not account for the address space used by hugetlbfs using VM_ACCOUNT 2009-02-10 10:48:42 -08:00
highmem.c mm: introduce debug_kmap_atomic 2009-04-01 08:59:14 -07:00
hugetlb.c hugetlb: chg cannot become less than 0 2009-04-01 08:59:13 -07:00
internal.h nommu: there is no mlock() for NOMMU, so don't provide the bits 2009-04-01 08:59:14 -07:00
Kconfig nommu: make the initial mmap allocation excess behaviour Kconfig configurable 2009-05-06 16:36:10 -07:00
Kconfig.debug generic debug pagealloc: build fix 2009-04-02 19:04:48 -07:00
maccess.c
madvise.c Revert "Ignore madvise(MADV_WILLNEED) for hugetlbfs-backed regions" 2009-05-13 08:29:12 -07:00
Makefile generic debug pagealloc 2009-04-01 08:59:13 -07:00
memcontrol.c memcg: fix mem_cgroup_shrink_usage() 2009-05-02 15:36:09 -07:00
memory_hotplug.c mm: remove GFP_HIGHUSER_PAGECACHE 2009-01-06 15:59:01 -08:00
memory.c mm: close page_mkwrite races 2009-05-02 15:36:09 -07:00
mempolicy.c [CVE-2009-0029] System call wrappers part 28 2009-01-14 14:15:30 +01:00
mempool.c
migrate.c FS-Cache: Recruit a page flags for cache management 2009-04-03 16:42:36 +01:00
mincore.c [CVE-2009-0029] System call wrappers part 14 2009-01-14 14:15:24 +01:00
mlock.c Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-02-17 14:27:39 -08:00
mm_init.c
mmap.c mm: fix Committed_AS underflow on large NR_CPUS environment 2009-05-02 15:36:10 -07:00
mmu_notifier.c
mmzone.c
mprotect.c Do not account for the address space used by hugetlbfs using VM_ACCOUNT 2009-02-10 10:48:42 -08:00
mremap.c [CVE-2009-0029] System call wrappers part 13 2009-01-14 14:15:23 +01:00
msync.c [CVE-2009-0029] System call wrappers part 13 2009-01-14 14:15:23 +01:00
nommu.c NOMMU: Don't check vm_region::vm_start is page aligned in add_nommu_region() 2009-05-07 12:03:41 -07:00
oom_kill.c oom: prevent livelock when oom_kill_allocating_task is set 2009-05-06 16:36:09 -07:00
page_alloc.c mm, x86: remove MEMORY_HOTPLUG_RESERVE related code 2009-05-18 09:13:31 +02:00
page_cgroup.c memcg: remove redundant message at swapon 2009-04-02 19:04:56 -07:00
page_io.c block: fix bad definition of BIO_RW_SYNC 2009-02-18 10:32:00 +01:00
page_isolation.c
page-writeback.c mm: fix proc_dointvec_userhz_jiffies "breakage" 2009-04-01 08:59:13 -07:00
pagewalk.c
pdflush.c Revert "mm: add /proc controls for pdflush threads" 2009-05-15 11:32:24 +02:00
percpu.c percpu: generalize embedding first chunk setup helper 2009-03-10 16:27:48 +09:00
prio_tree.c
quicklist.c cpumask: replace node_to_cpumask with cpumask_of_node. 2009-03-13 14:49:46 +10:30
readahead.c FS-Cache: Recruit a page flags for cache management 2009-04-03 16:42:36 +01:00
rmap.c mm: fix mlocked page counter mismatch 2009-02-11 14:25:35 -08:00
shmem_acl.c
shmem.c memcg: fix mem_cgroup_shrink_usage() 2009-05-02 15:36:09 -07:00
slab.c Merge branch 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-04-06 13:30:00 -07:00
slob.c kmemtrace: trace kfree() calls with NULL or zero-length objects 2009-04-03 12:23:10 +02:00
slub.c kmemtrace: trace kfree() calls with NULL or zero-length objects 2009-04-03 12:23:10 +02:00
sparse-vmemmap.c
sparse.c mm: mminit_validate_memmodel_limits(): remove redundant test 2009-04-01 08:59:11 -07:00
swap_state.c memcg: mem+swap controller core 2009-01-08 08:31:05 -08:00
swap.c mm: fix Committed_AS underflow on large NR_CPUS environment 2009-05-02 15:36:10 -07:00
swapfile.c PM/hibernate: fix "swap breaks after hibernation failures" 2009-02-21 14:17:17 -08:00
thrash.c
truncate.c FS-Cache: Recruit a page flags for cache management 2009-04-03 16:42:36 +01:00
util.c mm: document get_user_pages_fast() 2009-04-13 15:04:32 -07:00
vmalloc.c alloc_vmap_area: fix memory leak 2009-05-06 16:36:10 -07:00
vmscan.c vmscan: avoid multiplication overflow in shrink_zone() 2009-05-02 15:36:10 -07:00
vmstat.c mm: align vmstat_work's timer 2009-04-02 19:04:48 -07:00