__ppc_mdoio

SYNOPSIS
       #include <sys/platform/ppc.h>

       void __ppc_yield(void);
       void __ppc_mdoio(void);
       void __ppc_mdoom(void);

DESCRIPTION
       These functions provide hints about the usage  of  resources  that  are
       shared  with  other  processors on the Power architecture.  They can be
       used, for example, if a program waiting on a lock intends to divert the
       shared resources to be used by other processors.

       __ppc_yield()  provides  a  hint  that  performance  will  probably  be
       improved if shared resources dedicated to the executing  processor  are
       released for use by other processors.

       __ppc_mdoio()  provides  a  hint  that  performance  will  probably  be
       improved if shared resources dedicated to the executing  processor  are
       released  until  all  outstanding storage accesses to caching-inhibited
       storage have been completed.

       __ppc_mdoom()  provides  a  hint  that  performance  will  probably  be
       improved  if  shared resources dedicated to the executing processor are
       released until all outstanding storage accesses  to  cacheable  storage
       for which the data is not in the cache have been completed.

VERSIONS
       These functions first appeared in glibc in version 2.18.

ATTRIBUTES
       For   an   explanation   of   the  terms  used  in  this  section,  see
       attributes(7).

       +------------------------------+---------------+---------+
       |Interface                     | Attribute     | Value   |
       +------------------------------+---------------+---------+
       |__ppc_yield(), __ppc_mdoio(), | Thread safety | MT-Safe |
       |__ppc_mdoom()                 |               |         |
       +------------------------------+---------------+---------+
CONFORMING TO
       These functions are nonstandard GNU extensions.

SEE ALSO
       __ppc_set_ppr_med(3)

       Power ISA, Book II - Section 3.2 ("or" architecture)

COLOPHON
       This  page  is  part of release 4.04 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       http://www.kernel.org/doc/man-pages/.
Man Pages Copyright Respective Owners. Site Copyright (C) 1994 - 2019 Hurricane Electric. All Rights Reserved.