user/sven/linux.git - Linux Kernel

Age	Commit message (Collapse)	Author
2005-06-20	[PATCH] Driver core: unregister_node() for hotplug use	Keiichiro Tokunaga
	This adds a generic function 'unregister_node()'. It is used to remove objects of a node going away for hotplug. All the devices on the node must be unregistered before calling this function. Signed-off-by: Keiichiro Tokunaga <tokunaga.keiich@jp.fujitsu.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -puN drivers/base/node.c~numa_hp_base drivers/base/node.c
2004-08-23	[PATCH] Read cpumasks every time when exporting through sysfs	Rusty Russell
	Paul Jackson points out that the sysfs code saves a node's cpumask in the sysfs node, although it can change with CPU hotplug. Don't do this. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2003-08-18	[PATCH] cpumask_t: allow more than BITS_PER_LONG CPUs	Andrew Morton
	From: William Lee Irwin III <wli@holomorphy.com> Contributions from: Jan Dittmer <jdittmer@sfhq.hn.org> Arnd Bergmann <arnd@arndb.de> "Bryan O'Sullivan" <bos@serpentine.com> "David S. Miller" <davem@redhat.com> Badari Pulavarty <pbadari@us.ibm.com> "Martin J. Bligh" <mbligh@aracnet.com> Zwane Mwaikambo <zwane@linuxpower.ca> It has ben tested on x86, sparc64, x86_64, ia64 (I think), ppc and ppc64. cpumask_t enables systems with NR_CPUS > BITS_PER_LONG to utilize all their cpus by creating an abstract data type dedicated to representing cpu bitmasks, similar to fd sets from userspace, and sweeping the appropriate code to update callers to the access API. The fd set-like structure is according to Linus' own suggestion; the macro calling convention to ambiguate representations with minimal code impact is my own invention. Specifically, a new set of inline functions for manipulating arbitrary-width bitmaps is introduced with a relatively simple implementation, in tandem with a new data type representing bitmaps of width NR_CPUS, cpumask_t, whose accessor functions are defined in terms of the bitmap manipulation inlines. This bitmap ADT found an additional use in i386 arch code handling sparse physical APIC ID's, which was convenient to use in this case as the accounting structure was required to be wider to accommodate the physids consumed by larger numbers of cpus. For the sake of simplicity and low code impact, these cpu bitmasks are passed primarily by value; however, an additional set of accessors along with an auxiliary data type with const call-by-reference semantics is provided to address performance concerns raised in connection with very large systems, such as SGI's larger models, where copying and call-by-value overhead would be prohibitive. Few (if any) users of the call-by-reference API are immediately introduced. Also, in order to avoid calling convention overhead on architectures where structures are required to be passed by value, NR_CPUS <= BITS_PER_LONG is special-cased so that cpumask_t falls back to an unsigned long and the accessors perform the usual bit twiddling on unsigned longs as opposed to arrays thereof. Audits were done with the structure overhead in-place, restoring this special-casing only afterward so as to ensure a more complete API conversion while undergoing the majority of its end-user exposure in -mm. More -mm's were shipped after its restoration to be sure that was tested, too. The immediate users of this functionality are Sun sparc64 systems, SGI mips64 and ia64 systems, and IBM ia32, ppc64, and s390 systems. Of these, only the ppc64 machines needing the functionality have yet to be released; all others have had systems requiring it for full functionality for at least 6 months, and in some cases, since the initial Linux port to the affected architecture.
2003-06-10	[driver model] Compile fixes for NUMA	Patrick Mochel

2003-06-09	[numa nodes] Convert to use new system device API	Patrick Mochel

2002-10-31	[PATCH] driverfs topology cleanup	Andrew Morton
	From Matthew Dobson. This final patch from Matthew cleans up a few leftovers which were noted after the code had been reviewed and tested a bit in the -mm patchsets. 1) Update register_XXX and arch_register_XXX functions to return int instead of void. Functions calling these functions should know if they completed successfully to take appropriate further registration action, or not bother. 2) Drop some pointless error checking in the arch_register_XXX functions.
2002-10-31	[PATCH] Update/Create core files for DriverFS Topology.	Andrew Morton
	From Matthew Dobson. Update/Create core files for DriverFS Topology. This patch creates the generic structures that are (will be) embedded in the per-arch structures. Also creates calls to register these generic structures (CPUs, MemBlks, & Nodes). Note that without arch-specific structures in which to embed these structures, and an arch-specific initialization routine, these functions/structures remain unused.