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Diffstat (limited to 'manual')
| -rw-r--r-- | manual/platform.texi | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/manual/platform.texi b/manual/platform.texi index e387ff4cc9..316b1f1f2d 100644 --- a/manual/platform.texi +++ b/manual/platform.texi @@ -34,3 +34,27 @@ This frequency is not related to the processor clock or the bus clock. It is also possible that this frequency is not constant. More information is available in @cite{Power ISA 2.06b - Book II - Section 5.2}. @end deftypefun + +The following functions provide hints about the usage of resources that are +shared with other processors. 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. More information is available in @cite{Power ISA 2.06b - Book II - +Section 3.2}. + +@deftypefun {void} __ppc_yield (void) +Provide a hint that performance will probably be improved if shared resources +dedicated to the executing processor are released for use by other processors. +@end deftypefun + +@deftypefun {void} __ppc_mdoio (void) +Provide 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. +@end deftypefun + +@deftypefun {void} __ppc_mdoom (void) +Provide 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. +@end deftypefun |