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