Date: Thu, 20 Nov 2003 14:54:45 -0800 (PST) From: Peter Wemm <peter@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/amd64/amd64 machdep.c src/sys/amd64/include pcpu.h Message-ID: <200311202254.hAKMsj2Y009764@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
peter 2003/11/20 14:54:45 PST FreeBSD src repository Modified files: sys/amd64/amd64 machdep.c sys/amd64/include pcpu.h Log: Provide a streamlined '#define curthread __curthread()' for amd64 to avoid the compiler having to parse and optimize the PCPU_GET(curthread) so often. __curthread() is an inline optimized version of PCPU_GET(curthread) that knows that pc_curthread is at offset zero in the pcpu struct. Add a CTASSERT() to catch any possible changes to this. This accounts for just over a 1% wall clock speedup for total kernel compile/link time, and 20% compile time speedup on some specific files depending on which compile options are used. Approved by: re (jhb) Revision Changes Path 1.600 +3 -0 src/sys/amd64/amd64/machdep.c 1.41 +10 -0 src/sys/amd64/include/pcpu.h
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200311202254.hAKMsj2Y009764>