[PATCH -V7 2/3] NOT kernel/man2/set_mempolicy.2: Add mode flag MPOL_F_NUMA_BALANCING

From: Huang Ying
Date: Fri Dec 04 2020 - 04:16:42 EST


Signed-off-by: "Huang, Ying" <ying.huang@xxxxxxxxx>
---
man2/set_mempolicy.2 | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/man2/set_mempolicy.2 b/man2/set_mempolicy.2
index 68011eecb..fb2e6fd96 100644
--- a/man2/set_mempolicy.2
+++ b/man2/set_mempolicy.2
@@ -113,6 +113,15 @@ A nonempty
.I nodemask
specifies node IDs that are relative to the set of
node IDs allowed by the process's current cpuset.
+.TP
+.BR MPOL_F_NUMA_BALANCING " (since Linux 5.11)"
+When
+.I mode
+is MPOL_BIND, enable the Linux kernel NUMA balancing for the task if
+it is supported by kernel.
+If the flag isn't supported by Linux kernel, or is used with
+.I mode
+other than MPOL_BIND, return -1 and errno is set to EINVAL.
.PP
.I nodemask
points to a bit mask of node IDs that contains up to
@@ -293,6 +302,11 @@ argument specified both
.B MPOL_F_STATIC_NODES
and
.BR MPOL_F_RELATIVE_NODES .
+Or, the
+.B MPOL_F_NUMA_BALANCING
+isn't supported by the Linux kernel, or is used with
+.I mode
+other than MPOL_BIND.
.TP
.B ENOMEM
Insufficient kernel memory was available.
--
2.29.2