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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



  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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