Date: Thu, 16 Oct 2003 02:16:28 -0700 (PDT) From: Doug Rabson <dfr@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sys bus.h kobj.h param.h src/sys/kern subr_bus.c subr_kobj.c Message-ID: <200310160916.h9G9GSqQ067982@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
dfr 2003/10/16 02:16:28 PDT FreeBSD src repository Modified files: sys/sys bus.h kobj.h param.h sys/kern subr_bus.c subr_kobj.c Log: * Add multiple inheritance to kobj. Each class can have zero or more base classes and if a method is not found in a given class, its base classes are searched (in the order they were declared). This search is recursive, i.e. a method may be define in a base class of a base class. * Change the kobj method lookup algorithm to one which is SMP-safe. This relies only on the constraint that an observer of a sequence of writes of pointer-sized values will see exactly one of those values, not a mixture of two or more values. This assumption holds for all processors which FreeBSD supports. * Add locking to kobj class initialisation. * Add a simpler form of 'inheritance' for devclasses. Each devclass can have a parent devclass. Searches for drivers continue up the chain of devclasses until either a matching driver is found or a devclass is reached which has no parent. This can allow, for instance, pci drivers to match cardbus devices (assuming that cardbus declares pci as its parent devclass). * Increment __FreeBSD_version. This preserves the driver API entirely except for one minor feature used by the ISA compatibility shims. A workaround for ISA compatibility will be committed separately. The kobj and newbus ABI has changed - all modules must be recompiled. Revision Changes Path 1.133 +102 -66 src/sys/kern/subr_bus.c 1.8 +155 -33 src/sys/kern/subr_kobj.c 1.56 +13 -32 src/sys/sys/bus.h 1.9 +105 -31 src/sys/sys/kobj.h 1.172 +1 -1 src/sys/sys/param.h
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200310160916.h9G9GSqQ067982>