On Wed, May 29, 2002 at 11:46:58PM +0200, Maciej W. Rozycki wrote: > > > I converted a few flush_cache_all() invocations to __flush_cache_all() > > > where appropriate late last year, but the function is a bit older. I > > > think you might dig the linux-kernel list archives for a discussion on the > > > semantics of flush_cache_all() (it's a nop for many MIPS CPUs) and > > > friends. The short description in Documentation/cachetlb.txt is a bit > > > insufficient, I'm afraid. > > > > I don't like that function very much; it's sort of a shotgun approach > > to flushing caches in a part of the kernel that's not too performance > > relevant. The whole interface sucks, should be replaced by something > > more finegrained. > > Well, I suspect the API might be somewhat influenced by SPARC's oddities. > ;-) Historically that's certainly true. As a general complaint about the style of interfaces of the cache stuff - they're too low level. Frequently we just don't know enough about the situation to optimize the flush operation. Ralf
