NAME

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

LIBRARY

       Standard C library (libc, -lc)

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.

ATTRIBUTES

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

       ┌──────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │Interface                                                                     │ Attribute     │ Value   │
       ├──────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │__ppc_yield(), __ppc_mdoio(), __ppc_mdoom()                                   │ Thread safety │ MT-Safe │
       └──────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

       GNU.

HISTORY

       glibc 2.18.

SEE ALSO

       __ppc_set_ppr_med(3)

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