On Tue, Jul 02, 2002 at 10:06:51PM +0200, Ralf Baechle wrote: > On Tue, Jul 02, 2002 at 11:40:45AM -0700, H. J. Lu wrote: > > > The ll/sc emulation is implemented in 2.4.0 and above. This patch makes > > glibc always use ll/sc. > > Which means the overhead of two syscalls instead of one sysmips() call > for something that is assumed to be dirt cheap. R3000, R5900 etc. > users won't this patch you, which'll have significant impact on their > glibc performance. > Not all ll/sc usages are implemented with sysmips. Does mips care about those? In case of libstdc++, should mips use ll/sc emulation? H.J.
