1__PPC_YIELD(3)             Linux Programmer'sManual             __PPC_YIELD(3)
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NAME

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

10       #include <sys/platform/ppc.h>
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12       void __ppc_yield(void);
13       void __ppc_mdoio(void);
14       void __ppc_mdoom(void);
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DESCRIPTION

17       These functions provide hints about the usage  of  resources  that  are
18       shared  with  other  processors on the Power architecture.  They can be
19       used, for example, if a program waiting on a lock intends to divert the
20       shared resources to be used by other processors.
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22       __ppc_yield()  provides  a  hint  that performance will probably be im‐
23       proved if shared resources dedicated to the executing processor are re‐
24       leased for use by other processors.
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26       __ppc_mdoio()  provides  a  hint  that performance will probably be im‐
27       proved if shared resources dedicated to the executing processor are re‐
28       leased  until  all  outstanding  storage  accesses to caching-inhibited
29       storage have been completed.
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31       __ppc_mdoom() provides a hint that performance  will  probably  be  im‐
32       proved if shared resources dedicated to the executing processor are re‐
33       leased until all outstanding storage accesses to cacheable storage  for
34       which the data is not in the cache have been completed.
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VERSIONS

37       These functions first appeared in glibc in version 2.18.
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ATTRIBUTES

40       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
41       tributes(7).
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43       ┌────────────────────────────────────────────┬───────────────┬─────────┐
44       │Interface                                   │ Attribute     │ Value   │
45       ├────────────────────────────────────────────┼───────────────┼─────────┤
46       │__ppc_yield(), __ppc_mdoio(), __ppc_mdoom() │ Thread safety │ MT-Safe │
47       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

50       These functions are nonstandard GNU extensions.
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SEE ALSO

53       __ppc_set_ppr_med(3)
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55       Power ISA, Book II - Section 3.2 ("or" architecture)
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COLOPHON

58       This page is part of release 5.13 of the Linux  man-pages  project.   A
59       description  of  the project, information about reporting bugs, and the
60       latest    version    of    this    page,    can     be     found     at
61       https://www.kernel.org/doc/man-pages/.
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65GNU C Library                     2021-03-22                    __PPC_YIELD(3)
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