From: Huang Ying <ying.huang@intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Rafael Aquini <aquini@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>, Mel Gorman <mgorman@suse.de>,
Rik van Riel <riel@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Dave Hansen <dave.hansen@intel.com>,
Andi Kleen <ak@linux.intel.com>, Michal Hocko <mhocko@suse.com>,
David Rientjes <rientjes@google.com>,
linux-api@vger.kernel.org, "Huang, Ying" <ying.huang@intel.com>
Subject: [PATCH -v6 2/3] NOT kernel/man-pages man2/set_mempolicy.2: Add mode flag MPOL_F_NUMA_BALANCING
Date: Thu, 26 Nov 2020 13:32:18 +0800 [thread overview]
Message-ID: <20201126053219.234793-3-ying.huang@intel.com> (raw)
In-Reply-To: <20201126053219.234793-1-ying.huang@intel.com>
From: Huang Ying <caritas@localhost>
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
---
man2/set_mempolicy.2 | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/man2/set_mempolicy.2 b/man2/set_mempolicy.2
index 68011eecb..fb16bb351 100644
--- a/man2/set_mempolicy.2
+++ b/man2/set_mempolicy.2
@@ -113,6 +113,11 @@ 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)"
+Enable the Linux kernel NUMA balancing for the task if it is supported
+by kernel. If the flag isn't supported by Linux kernel, 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 +298,9 @@ 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.
.TP
.B ENOMEM
Insufficient kernel memory was available.
--
2.29.2
next prev parent reply other threads:[~2020-11-26 5:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 5:32 [PATCH -V6 0/3] autonuma: Migrate on fault among multiple bound nodes Huang Ying
2020-11-26 5:32 ` [PATCH -V6 1/3] numa balancing: " Huang Ying
2020-11-26 5:32 ` Huang Ying [this message]
2020-11-30 17:48 ` [PATCH -v6 2/3] NOT kernel/man-pages man2/set_mempolicy.2: Add mode flag MPOL_F_NUMA_BALANCING Dave Hansen
2020-12-01 0:27 ` Huang, Ying
2020-11-26 5:32 ` [PATCH -V6 3/3] NOT kernel/numactl: Support to enable Linux kernel NUMA balancing Huang Ying
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