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| author | Nitin Gupta <nitin.m.gupta@oracle.com> | 2016-01-05 22:35:35 -0800 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-07-12 08:48:24 -0400 |
| commit | 0396a871c4e3fbbaabb4f2632c1d388a04b68c84 (patch) | |
| tree | e3e1555dbf6f4bb6d04f2e08699054fcd626c590 | |
| parent | df7136e7517600f3cc45e2923dce21341415a1f3 (diff) | |
| download | lwn-0396a871c4e3fbbaabb4f2632c1d388a04b68c84.tar.gz lwn-0396a871c4e3fbbaabb4f2632c1d388a04b68c84.zip | |
sparc64: Fix numa node distance initialization
[ Upstream commit 36beca6571c941b28b0798667608239731f9bc3a ]
Orabug: 22495713
Currently, NUMA node distance matrix is initialized only
when a machine descriptor (MD) exists. However, sun4u
machines (e.g. Sun Blade 2500) do not have an MD and thus
distance values were left uninitialized. The initialization
is now moved such that it happens on both sun4u and sun4v.
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Tested-by: Mikael Pettersson <mikpelinux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | arch/sparc/mm/init_64.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 2d91c62f7f5f..24e907b1f5f5 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -1300,10 +1300,18 @@ static int __init numa_parse_sun4u(void) static int __init bootmem_init_numa(void) { + int i, j; int err = -1; numadbg("bootmem_init_numa()\n"); + /* Some sane defaults for numa latency values */ + for (i = 0; i < MAX_NUMNODES; i++) { + for (j = 0; j < MAX_NUMNODES; j++) + numa_latency[i][j] = (i == j) ? + LOCAL_DISTANCE : REMOTE_DISTANCE; + } + if (numa_enabled) { if (tlb_type == hypervisor) err = numa_parse_mdesc(); |