[PATCH 1/1] mm/mempolicy.c: add MPOL_LOCAL NUMA memory policy documentation
From: Piotr Kwapulinski <hidden>
Date: 2016-09-27 13:23:21
Also in:
linux-api, linux-man, lkml
Subsystem:
documentation, memory management, memory management - memory policy and migration, the rest · Maintainers:
Jonathan Corbet, Andrew Morton, David Hildenbrand, Linus Torvalds
The MPOL_LOCAL mode has been implemented by Peter Zijlstra [off-list ref] (commit: 479e2802d09f1e18a97262c4c6f8f17ae5884bd8). Add the documentation for this mode. Signed-off-by: Piotr Kwapulinski <redacted> --- Documentation/vm/numa_memory_policy.txt | 8 ++++++++ mm/mempolicy.c | 4 ++++ 2 files changed, 12 insertions(+)
diff --git a/Documentation/vm/numa_memory_policy.txt b/Documentation/vm/numa_memory_policy.txt
index 622b927..dcb490e 100644
--- a/Documentation/vm/numa_memory_policy.txt
+++ b/Documentation/vm/numa_memory_policy.txt@@ -212,6 +212,14 @@ Components of Memory Policies the temporary interleaved system default policy works in this mode. + MPOL_LOCAL: This mode specifies "local allocation". It must be + used along with an empty nodemask. It acts like the MPOL_PREFERRED + mode specified with an empty nodemask. For details refer to + the MPOL_PREFERRED mode described above. + + Internally, it is transformed into MPOL_PREFERRED mode with an + empty nodemask. + Linux memory policy supports the following optional mode flags: MPOL_F_STATIC_NODES: This flag specifies that the nodemask passed by
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 2da72a5..02dc43e 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c@@ -35,6 +35,10 @@ * use the process policy. This is what Linux always did * in a NUMA aware kernel and still does by, ahem, default. * + * local "Local allocation". It acts like a special case of + * "preferred" memory policy: NUMA_NO_NODE (see above + * for details). + * * The process policy is applied for most non interrupt memory allocations * in that process' context. Interrupts ignore the policies and always * try to allocate on the local CPU. The VMA policy is only applied for memory
--
2.10.0
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>