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author | Wei Yang <richard.weiyang@gmail.com> | 2017-03-14 11:08:01 +0800 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2017-04-03 11:54:37 +0200 |
commit | 474aeffd88b87746a75583f356183d5c6caa4213 (patch) | |
tree | 9b1b66516861433610d8da6f17060e254d12bd69 /mm | |
parent | 43dac8f6a74c9811454f4efbe52b48f7a802c277 (diff) | |
download | linux-474aeffd88b87746a75583f356183d5c6caa4213.tar.gz linux-474aeffd88b87746a75583f356183d5c6caa4213.tar.bz2 linux-474aeffd88b87746a75583f356183d5c6caa4213.zip |
x86/mm/numa: Remove numa_nodemask_from_meminfo()
numa_nodemask_from_meminfo() generates a nodemask of nodes which have
memory according to a meminfo descriptor.
The two callsites of that function both set bits in copies of the
numa_nodes_parsed nodemask. In both cases, the information in supplied
numa_meminfo is a subset of numa_nodes_parsed. So setting those bits
again is not really necessary.
Here are the three call paths which show that the supplied numa_meminfo
argument describes memory regions in nodes which are already in
numa_nodes_parsed:
x86_numa_init()
numa_init()
Case 1:
acpi_numa_init()
acpi_parse_memory_affinity()
numa_add_memblk()
node_set(numa_nodes_parsed)
acpi_parse_slit()
acpi_numa_slit_init()
numa_set_distance()
numa_alloc_distance()
numa_nodemask_from_meminfo()
Case 2:
amd_numa_init()
numa_add_memblk()
node_set(numa_nodes_parsed)
Case 3
dummy_numa_init()
node_set(numa_nodes_parsed)
numa_add_memblk()
numa_register_memblks()
numa_nodemask_from_meminfo()
Thus, in all three cases, the respective bit in numa_nodes_parsed is
set, which means it is not necessary to set it again in a copy of
numa_nodes_parsed.
So remove that function.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/20170314030801.13656-2-richard.weiyang@gmail.com
[ Heavily massage commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions