Andriy Gapon d443a96ffb i386 and amd64 mp_machdep: improve topology detection for Intel CPUs ... This patch is significantly based on previous work by jkim. List of changes: - added comments that describe topology uniformity assumption - added reference to Intel Processor Topology Enumeration article - documented a few global variables that describe topology - retired weirdly set and used logical_cpus variable - changed fallback code for mp_ncpus > 0 case, so that CPUs are treated as being different packages rather than cores in a single package - moved AMD-specific code to topo_probe_amd [jkim] - in topo_probe_0x4() follow Intel-prescribed procedure of deriving SMT and core masks and match APIC IDs against those masks [started by jkim] - in topo_probe_0x4() drop code for double-checking topology parameters by looking at L1 cache properties [jkim] - in topo_probe_0xb() add fallback path to topo_probe_0x4() as prescribed by Intel [jkim] Still to do: - prepare for upcoming AMD CPUs by using new mechanism of uniform topology description [pointed by jkim] - probe cache topology in addition to CPU topology and probably use that for scheduler affinity topology; e.g. Core2 Duo and Athlon II X2 have the same CPU topology, but Athlon cores do not share L2 cache while Core2's do (no L3 cache in both cases) - think of supporting non-uniform topologies if they are ever implemented for platforms in question - think how to better described old HTT vs new HTT distinction, HTT vs SMT can be confusing as SMT is a generic term - more robust code for marking CPUs as "logical" and/or "hyperthreaded", use HTT mask instead of modulo operation - correct support for halting logical and/or hyperthreaded CPUs, let scheduler know that it shouldn't schedule any threads on those CPUs PR: kern/145385 (related) In collaboration with: jkim Tested by: Sergey Kandaurov <pluknet@gmail.com>, Jeremy Chadwick <freebsd@jdc.parodius.com>, Chip Camden <sterling@camdensoftware.com>, Steve Wills <steve@mouf.net>, Olivier Smedts <olivier@gid0.org>, Florian Smeets <flo@smeets.im> MFC after: 1 month		2010-10-01 10:32:54 +00:00
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acpica	Reset switchtime to zero rather than the current CPU ticker (TSC) value.	2010-08-13 22:08:42 +00:00
amd64	i386 and amd64 mp_machdep: improve topology detection for Intel CPUs	2010-10-01 10:32:54 +00:00
compile
conf	Now userland POSIX semaphore is based on umtx. The kernel module	2010-09-24 09:04:16 +00:00
ia32	Remove unused KTRACE includes.	2010-08-19 16:41:27 +00:00
include	amd64: reduce VM_KMEM_SIZE_SCALE to 1 allowing kernel to use more memory	2010-09-17 07:36:32 +00:00
linux32	The interpreter name should no longer be treated as a buffer that can be	2010-07-28 04:47:40 +00:00
pci
Makefile