kernel_samsung_sm7125

jenna

History

Gary Hade c04fc586c1 mm: show node to memory section relationship with symlinks in sysfs Show node to memory section relationship with symlinks in sysfs Add /sys/devices/system/node/nodeX/memoryY symlinks for all the memory sections located on nodeX. For example: /sys/devices/system/node/node1/memory135 -> ../../memory/memory135 indicates that memory section 135 resides on node1. Also revises documentation to cover this change as well as updating Documentation/ABI/testing/sysfs-devices-memory to include descriptions of memory hotremove files 'phys_device', 'phys_index', and 'state' that were previously not described there. In addition to it always being a good policy to provide users with the maximum possible amount of physical location information for resources that can be hot-added and/or hot-removed, the following are some (but likely not all) of the user benefits provided by this change. Immediate: - Provides information needed to determine the specific node on which a defective DIMM is located. This will reduce system downtime when the node or defective DIMM is swapped out. - Prevents unintended onlining of a memory section that was previously offlined due to a defective DIMM. This could happen during node hot-add when the user or node hot-add assist script onlines _all_ offlined sections due to user or script inability to identify the specific memory sections located on the hot-added node. The consequences of reintroducing the defective memory could be ugly. - Provides information needed to vary the amount and distribution of memory on specific nodes for testing or debugging purposes. Future: - Will provide information needed to identify the memory sections that need to be offlined prior to physical removal of a specific node. Symlink creation during boot was tested on 2-node x86_64, 2-node ppc64, and 2-node ia64 systems. Symlink creation during physical memory hot-add tested on a 2-node x86_64 system. Signed-off-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		16 years ago
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Makefile	Merge branches 'tracing/ftrace', 'tracing/fastboot', 'tracing/nmisafe' and 'tracing/urgent' into tracing/core	16 years ago
dump_pagetables.c	x86: another user of PTE_FLAGS_MASK	17 years ago
extable.c	…
fault.c	mm: invoke oom-killer from page fault	16 years ago
gup.c	x86: two trivial sparse annotations	17 years ago
highmem_32.c	Export kmap_atomic_pfn for DRM-GEM.	17 years ago
hugetlbpage.c	x86: add hugepagesz option on 64-bit	17 years ago
init_32.c	mm: show node to memory section relationship with symlinks in sysfs	16 years ago
init_64.c	mm: show node to memory section relationship with symlinks in sysfs	16 years ago
iomap_32.c	x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmaps	17 years ago
ioremap.c	x86: soften multi-BAR mapping sanity check warning message	16 years ago
k8topology_64.c	x86: remove end_pfn in 64bit	17 years ago
kmmio.c	- fix mmioftrace + rcu merge interaction	17 years ago
memtest.c	x86: memtest fix use of reserve_early()	17 years ago
mmap.c	…
mmio-mod.c	mmiotrace: remove left-over marker cruft	17 years ago
numa_32.c	x86, hibernate: fix breakage on x86_32 with CONFIG_NUMA set	16 years ago
numa_64.c	x86: prepare for cpumask iterators to only go to nr_cpu_ids	16 years ago
pageattr-test.c	x86: make sure the CPA test code's use of _PAGE_UNUSED1 is obvious	17 years ago
pageattr.c	x86: align DirectMap in /proc/meminfo	17 years ago
pat.c	x86: PAT: fix address types in track_pfn_vma_new()	16 years ago
pf_in.c	x86: fix mmiotrace 8-bit register decoding	17 years ago
pf_in.h	…
pgtable.c	x86: pgd_{c,d}tor() cleanup	17 years ago
pgtable_32.c	i386: vmalloc size fix	17 years ago
srat_32.c	x86: don't call e820_regiter_active_regions if out of range on node	17 years ago
srat_64.c	x86: prepare for cpumask iterators to only go to nr_cpu_ids	16 years ago
testmmiotrace.c	x86 mmiotrace: implement mmiotrace_printk()	17 years ago