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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-08-05 12:15:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-08-06 08:57:49 -0700 |
| commit | fa25d8d6d3fa0fecd00cd4b909011291eae9257d (patch) | |
| tree | 641304544db303a499387b52940aa0b52dcc0311 | |
| parent | 58c1b5b079071d82b2f924000b7e8fb5585ce7d8 (diff) | |
| download | linux-3.10-fa25d8d6d3fa0fecd00cd4b909011291eae9257d.tar.gz linux-3.10-fa25d8d6d3fa0fecd00cd4b909011291eae9257d.tar.bz2 linux-3.10-fa25d8d6d3fa0fecd00cd4b909011291eae9257d.zip | |
[PATCH] memory hotadd fixes: avoid check in acpi
add_memory() does all necessary check to avoid collision. then, acpi layer
doesn't have to check region by itself.
(*) pfn_valid() just returns page struct is valid or not. It returns 0
if a section has been already added even is ioresource is not added.
ioresource collision check in mm/memory_hotplug.c can do more precise
collistion check.
added enabled bit check just for sanity check..
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Keith Mannthey <kmannth@gmail.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/acpi/acpi_memhotplug.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 81e970adeab..e9175eaeb1d 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -230,17 +230,10 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) * (i.e. memory-hot-remove function) */ list_for_each_entry(info, &mem_device->res_list, list) { - u64 start_pfn, end_pfn; - - start_pfn = info->start_addr >> PAGE_SHIFT; - end_pfn = (info->start_addr + info->length - 1) >> PAGE_SHIFT; - - if (pfn_valid(start_pfn) || pfn_valid(end_pfn)) { - /* already enabled. try next area */ + if (info->enabled) { /* just sanity check...*/ num_enabled++; continue; } - result = add_memory(node, info->start_addr, info->length); if (result) continue; |