linux/arch/ia64
Mel Gorman 8a942fdea5 mm: meminit: make __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid
__early_pfn_to_nid() use static variables to cache recent lookups as
memblock lookups are very expensive but it assumes that memory
initialisation is single-threaded.  Parallel initialisation of struct
pages will break that assumption so this patch makes __early_pfn_to_nid()
SMP-safe by requiring the caller to cache recent search information.
early_pfn_to_nid() keeps the same interface but is only safe to use early
in boot due to the use of a global static variable.  meminit_pfn_in_nid()
is an SMP-safe version that callers must maintain their own state for.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Tested-by: Nate Zimmer <nzimmer@sgi.com>
Tested-by: Waiman Long <waiman.long@hp.com>
Tested-by: Daniel J Blueman <daniel@numascale.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Robin Holt <robinmholt@gmail.com>
Cc: Nate Zimmer <nzimmer@sgi.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Waiman Long <waiman.long@hp.com>
Cc: Scott Norton <scott.norton@hp.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-06-30 19:44:56 -07:00
..
configs [IA64] refresh arch/ia64/configs/* using "make savedefconfig" 2014-09-23 11:09:29 -07:00
dig Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
hp ACPI / ia64 / sba_iommu: Restore the working initialization ordering 2014-06-16 22:33:20 +02:00
include Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
kernel The libnvdimm sub-system introduces, in addition to the libnvdimm-core, 2015-06-29 10:34:42 -07:00
lib Fix common misspellings 2011-03-31 11:26:23 -03:00
mm mm: meminit: make __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid 2015-06-30 19:44:56 -07:00
oprofile Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
pci PCI / ACPI: Do not set ACPI companions for host bridges with parents 2015-05-28 01:39:53 +02:00
scripts ia64: remove paravirt code 2015-06-10 14:26:32 -07:00
sn PCI: Assign resources before drivers claim devices (pci_scan_root_bus()) 2015-03-19 10:17:13 -05:00
uv ia64: change to new flag variables 2011-03-17 14:02:56 +01:00
install.sh
Kconfig ia64: remove paravirt code 2015-06-10 14:26:32 -07:00
Kconfig.debug
Makefile KVM: ia64: remove 2014-11-20 11:08:33 +01:00
module.lds