mainline inclusion
from mainline-v5.14-rc1
commit 0159bb02
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5OOWG
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0159bb020ca9a43b17aa9149f1199643c1d49426

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Now that core scheduling is merged, update the documentation.
Co-developed-by: NChris Hyser <chris.hyser@oracle.com>
Signed-off-by: NChris Hyser <chris.hyser@oracle.com>
Co-developed-by: NJosh Don <joshdon@google.com>
Signed-off-by: NJosh Don <joshdon@google.com>
Signed-off-by: NJoel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210603013136.370918-1-joel@joelfernandes.orgSigned-off-by: NLin Shengwang <linshengwang1@huawei.com>
Reviewed-by: Nlihua <hucool.lihua@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>