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NAME | SYNOPSIS | DESCRIPTION | VERSIONS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
__PPC_YIELD(3) Linux Programmer'sManual __PPC_YIELD(3)
__ppc_yield, __ppc_mdoio, __ppc_mdoom - Hint the processor to release
shared resources
#include <sys/platform/ppc.h>
void __ppc_yield(void);
void __ppc_mdoio(void);
void __ppc_mdoom(void);
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.
These functions first appeared in glibc in version 2.18.
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() │ │ │
└──────────────────────────────┴───────────────┴─────────┘
These functions are nonstandard GNU extensions.
__ppc_set_ppr_med(3)
Power ISA, Book II - Section 3.2 ("or" architecture)
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GNU C Library 2017-09-15 __PPC_YIELD(3)
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