__ppc_yield(3) — Linux manual page

__ppc_yield(3)          Library Functions Manual          __ppc_yield(3)

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(),       │ Thread safety │ MT-Safe │
       │ __ppc_mdoom()                       │               │         │
       └─────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

       GNU.

HISTORY

       glibc 2.18.

SEE ALSO

       __ppc_set_ppr_med(3)

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

COLOPHON

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Linux man-pages 6.9.1          2024-05-02                 __ppc_yield(3)

Pages that refer to this page: __ppc_set_ppr_med(3)

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