Hello Yafang, On Fri, Dec 08, 2023 at 09:05:53AM +0000, Yafang Shao wrote: > In Linux Kernel 5.12, a new mode flag, MPOL_F_NUMA_BALANCING, was > added to set_mempolicy() to optimize the page placement among the > NUMA nodes with the NUMA balancing mechanism even if the memory of > the applications is bound with MPOL_BIND. > > In Linux Kernel 5.15, this mode flag was extended to mbind(2). Let's > also add man-page for mbind(2). It is copied from set_mempoicy(2) > man-page with subtle modifications. > > Related kernel commits: > bda420b985054a3badafef23807c4b4fa38a3dff > 6d2aec9e123bb9c49cb5c7fc654f25f81e688e8c > > Suggested-by: "Huang, Ying" <ying.huang@xxxxxxxxx> > Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx> > Cc: "Huang, Ying" <ying.huang@xxxxxxxxx> > Cc: Alejandro Colomar <alx.manpages@xxxxxxxxx> > Cc: Michael Kerrisk <mtk.manpages@xxxxxxxxx> > --- Patch applied. Thanks, Alex > man2/mbind.2 | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/man2/mbind.2 b/man2/mbind.2 > index ba1b81ae9..dac784389 100644 > --- a/man2/mbind.2 > +++ b/man2/mbind.2 > @@ -142,6 +142,23 @@ The supported > .I "mode flags" > are: > .TP > +.BR MPOL_F_NUMA_BALANCING " (since Linux 5.15)" > +.\" commit bda420b985054a3badafef23807c4b4fa38a3dff > +.\" commit 6d2aec9e123bb9c49cb5c7fc654f25f81e688e8c > +When > +.I mode > +is > +.BR MPOL_BIND , > +enable the kernel NUMA balancing for the task if it is supported by the kernel. > +If the flag isn't supported by the kernel, or is used with > +.I mode > +other than > +.BR MPOL_BIND , > +\-1 is returned and > +.I errno > +is set to > +.BR EINVAL . > +.TP > .BR MPOL_F_STATIC_NODES " (since Linux-2.6.26)" > A nonempty > .I nodemask > -- > 2.30.1 (Apple Git-130) > -- <https://www.alejandro-colomar.es/>
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