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__PPC_YIELD(3)		   Linux Programmer'sManual		__PPC_YIELD(3)

NAME
       __ppc_yield,  __ppc_mdoio,  __ppc_mdoom - Hint the processor to release
       shared resources

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 4.14 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
       https://www.kernel.org/doc/man-pages/.

GNU C Library			  2017-09-15			__PPC_YIELD(3)
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