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* md: introduce get_priority_stripe() to improve raid456 write performanceDan Williams2008-04-281-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve write performance by preventing the delayed_list from dumping all its stripes onto the handle_list in one shot. Delayed stripes are now further delayed by being held on the 'hold_list'. The 'hold_list' is bypassed when: * a STRIPE_IO_STARTED stripe is found at the head of 'handle_list' * 'handle_list' is empty and i/o is being done to satisfy full stripe-width write requests * 'bypass_count' is less than 'bypass_threshold'. By default the threshold is 1, i.e. every other stripe handled is a preread stripe provided the top two conditions are false. Benchmark data: System: 2x Xeon 5150, 4x SATA, mem=1GB Baseline: 2.6.24-rc7 Configuration: mdadm --create /dev/md0 /dev/sd[b-e] -n 4 -l 5 --assume-clean Test1: dd if=/dev/zero of=/dev/md0 bs=1024k count=2048 * patched: +33% (stripe_cache_size = 256), +25% (stripe_cache_size = 512) Test2: tiobench --size 2048 --numruns 5 --block 4096 --block 131072 (XFS) * patched: +13% * patched + preread_bypass_threshold = 0: +37% Changes since v1: * reduce bypass_threshold from (chunk_size / sectors_per_chunk) to (1) and make it configurable. This defaults to fairness and modest performance gains out of the box. Changes since v2: * [neilb@suse.de]: kill STRIPE_PRIO_HI and preread_needed as they are not necessary, the important change was clearing STRIPE_DELAYED in add_stripe_bio and this has been moved out to make_request for the hang fix. * [neilb@suse.de]: simplify get_priority_stripe * [dan.j.williams@intel.com]: reset the bypass_count when ->hold_list is sampled empty (+11%) * [dan.j.williams@intel.com]: decrement the bypass_count at the detection of stripes being naturally promoted off of hold_list +2%. Note, resetting bypass_count instead of decrementing on these events yields +4% but that is probably too aggressive. Changes since v3: * cosmetic fixups Tested-by: James W. Laferriere <babydr@baby-dragons.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fbdev: intelfb: add support for the Intel Integrated Graphics Controller ↵Maik Broemme2008-04-281-0/+2
| | | | | | | | | | | | | | | | | | | | | 965G/965GM Add support for the 965G and 965GM graphic chipsets to the intelfb driver. I have a notebook with an Intel Mobile GM965/GL960 Integrated Graphics Controller and with the attached patch the framebuffer comes up. I have tested it a bit with DirectFB to make sure it is working stable. I also have an Intel Mobile GM945 and I compared the results, the programming interface of the 9xx series from Intel is mostly the same, so I think the patch should add all the functionality which the 945GM has. Signed-off-by: Maik Broemme <mbroemme@plusserver.de> Cc: Dave Airlie <airlied@linux.ie> Cc: Antonino Daplas <adaplas@pol.net> Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fbdev: platforming metronomefb and am200epdJaya Kumar2008-04-281-9/+7
| | | | | | | | | | | This patch splits metronomefb into the platform independent metronomefb and the platform dependent am200epd. Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fbdev: powerpc: driver for Freescale 8610 and 5121 DIUYork Sun2008-04-281-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following features are supported: plane 0 works as a regular frame buffer, can be accessed by /dev/fb0 plane 1 has two AOIs (area of interest), can be accessed by /dev/fb1 and /dev/fb2 plane 2 has two AOIs, can be accessed by /dev/fb3 and /dev/fb4 Special ioctls support AOIs All /dev/fb* can be used as regular frame buffer devices, except hardware change can only be made through /dev/fb0. Changing pixel clock has no effect on other fbs. Limitation of usage of AOIs: AOIs on the same plane can not be horizonally overlapped AOIs have horizonal order, i.e. AOI0 should be always on top of AOI1 AOIs can not beyond phisical display area. Application should check AOI geometry before changing physical resolution on /dev/fb0 required command line parameters to preallocate memory for frame buffer diufb. optional command line parameters to set modes and monitor video=fslfb:[resolution][,bpp][,monitor] Syntax: Resolution xres x yres-bpp@refresh_rate, the -bpp and @refresh_rate are optional eg, 1024x768, 1280x1024, 1280x1024-32, 1280x1024@60, 1280x1024-32@60, 1280x480-32@60 Bpp bpp=32, bpp=24, or bpp=16 Monitor monitor=0, monitor=1, monitor=2 0 is DVI 1 is Single link LVDS 2 is Double link LVDS Note: switching monitor is a board feather, not DIU feather. MPC8610HPCD has three monitor ports to swtich to. MPC5121ADS doesn't have additional monitor port. So switching monirot port for MPC5121ADS has no effect. If compiled as a module, it takes pamameters mode, bpp, monitor with the same syntax above. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Timur Tabi <timur@freescale.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lxfb: disable suspend VT switch by defaultAndres Salomon2008-04-281-0/+2
| | | | | | | | | | | By default disable VT switch, but allow it to be overridden via the 'vt_switch' module arg. Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lxfb: rename kernel arg fbsize to vramAndres Salomon2008-04-281-0/+50
| | | | | | | | | | | Match other fb drivers (including gxfb). Also, document the current boot arguments in Documentation/fb/lxfb.txt. Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* update modedb.txt documentation about mode_option parameter changeKrzysztof Helt2008-04-281-0/+4
| | | | | | | | | | | | Add names of drivers converted to "mode_option" parameter. This is one step toward changing all fb drivers to have common "mode_option" parameter. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PM/gxfb: add hook to PM console layer that allows disabling of suspend VT switchAndres Salomon2008-04-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | Prior to suspend, we allocate and switch to a new VT; after suspend, we switch back to the original VT. This can be slow, and is completely unnecessary if the framebuffer we're using can restore video properly. This adds a hook that allows drivers to select whether or not to do this vt switch, and changes the gxfb driver to call this hook. It also adds a module param to gxfb to allow controlling of the vt switch (defaulting to no switch). (Note: I'm not convinced that console_sem is the best way to protect this, but we should probably have some form of locking..) [akpm@linux-foundation.org: build fix] Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Jordan Crouse <jordan.crouse@amd.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gxfb: replace FBSIZE config option with a module parameterAndres Salomon2008-04-281-0/+51
| | | | | | | | | | | | | | | Use a command line option (vram) rather than hardcoding the vram size. LxFB already does this; it's useful for machines that can't query the BIOS for fb size. This patch originated from David Woodhouse, was modified by Jordan Crouse, and was then modified further by me. This also adds some gxfb documentation in Documentation/fb. Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Jordan Crouse <jordan.crouse@amd.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gpio: define gpio_is_valid()Guennadi Liakhovetski2008-04-281-0/+10
| | | | | | | | | | | Introduce a gpio_is_valid() predicate; use it in gpiolib. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> [ use inline function; follow the gpio_* naming convention; work without gpiolib; all programming interfaces need docs ] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kprobes: update document about batch registrationMasami Hiramatsu2008-04-281-4/+47
| | | | | | | | | | | | | | | Add the description of batch registration interfaces to Documentation/kprobes.txt. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Shaohua Li <shaohua.li@intel.com> Cc: David Miller <davem@davemloft.net> Cc: "Frank Ch. Eigler" <fche@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* documentation: move spidev_fdx example to its own source fileRandy Dunlap2008-04-282-166/+160
| | | | | | | | | | | | Move sample source code to its own source file so that it can be used easier and build-tested/check/maintained by anyone. (Makefile changes are in a separate patch for all of Documentation/.) Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mempolicy: use MPOL_F_LOCAL to Indicate Preferred Local PolicyLee Schermerhorn2008-04-281-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Now that we're using "preferred local" policy for system default, we need to make this as fast as possible. Because of the variable size of the mempolicy structure [based on size of nodemasks], the preferred_node may be in a different cacheline from the mode. This can result in accessing an extra cacheline in the normal case of system default policy. Suspect this is the cause of an observed 2-3% slowdown in page fault testing relative to kernel without this patch series. To alleviate this, use an internal mode flag, MPOL_F_LOCAL in the mempolicy flags member which is guaranteed [?] to be in the same cacheline as the mode itself. Verified that reworked mempolicy now performs slightly better on 25-rc8-mm1 for both anon and shmem segments with system default and vma [preferred local] policy. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mempolicy: use MPOL_PREFERRED for system-wide default policyLee Schermerhorn2008-04-281-36/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, when one specifies MPOL_DEFAULT via a NUMA memory policy API [set_mempolicy(), mbind() and internal versions], the kernel simply installs a NULL struct mempolicy pointer in the appropriate context: task policy, vma policy, or shared policy. This causes any use of that policy to "fall back" to the next most specific policy scope. The only use of MPOL_DEFAULT to mean "local allocation" is in the system default policy. This requires extra checks/cases for MPOL_DEFAULT in many mempolicy.c functions. There is another, "preferred" way to specify local allocation via the APIs. That is using the MPOL_PREFERRED policy mode with an empty nodemask. Internally, the empty nodemask gets converted to a preferred_node id of '-1'. All internal usage of MPOL_PREFERRED will convert the '-1' to the id of the node local to the cpu where the allocation occurs. System default policy, except during boot, is hard-coded to "local allocation". By using the MPOL_PREFERRED mode with a negative value of preferred node for system default policy, MPOL_DEFAULT will never occur in the 'policy' member of a struct mempolicy. Thus, we can remove all checks for MPOL_DEFAULT when converting policy to a node id/zonelist in the allocation paths. In slab_node() return local node id when policy pointer is NULL. No need to set a pol value to take the switch default. Replace switch default with BUG()--i.e., shouldn't happen. With this patch MPOL_DEFAULT is only used in the APIs, including internal calls to do_set_mempolicy() and in the display of policy in /proc/<pid>/numa_maps. It always means "fall back" to the the next most specific policy scope. This simplifies the description of memory policies quite a bit, with no visible change in behavior. get_mempolicy() continues to return MPOL_DEFAULT and an empty nodemask when the requested policy [task or vma/shared] is NULL. These are the values one would supply via set_mempolicy() or mbind() to achieve that condition--default behavior. This patch updates Documentation to reflect this change. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mempolicy: rework mempolicy Reference Counting [yet again]Lee Schermerhorn2008-04-281-0/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After further discussion with Christoph Lameter, it has become clear that my earlier attempts to clean up the mempolicy reference counting were a bit of overkill in some areas, resulting in superflous ref/unref in what are usually fast paths. In other areas, further inspection reveals that I botched the unref for interleave policies. A separate patch, suitable for upstream/stable trees, fixes up the known errors in the previous attempt to fix reference counting. This patch reworks the memory policy referencing counting and, one hopes, simplifies the code. Maybe I'll get it right this time. See the update to the numa_memory_policy.txt document for a discussion of memory policy reference counting that motivates this patch. Summary: Lookup of mempolicy, based on (vma, address) need only add a reference for shared policy, and we need only unref the policy when finished for shared policies. So, this patch backs out all of the unneeded extra reference counting added by my previous attempt. It then unrefs only shared policies when we're finished with them, using the mpol_cond_put() [conditional put] helper function introduced by this patch. Note that shmem_swapin() calls read_swap_cache_async() with a dummy vma containing just the policy. read_swap_cache_async() can call alloc_page_vma() multiple times, so we can't let alloc_page_vma() unref the shared policy in this case. To avoid this, we make a copy of any non-null shared policy and remove the MPOL_F_SHARED flag from the copy. This copy occurs before reading a page [or multiple pages] from swap, so the overhead should not be an issue here. I introduced a new static inline function "mpol_cond_copy()" to copy the shared policy to an on-stack policy and remove the flags that would require a conditional free. The current implementation of mpol_cond_copy() assumes that the struct mempolicy contains no pointers to dynamically allocated structures that must be duplicated or reference counted during copy. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mempolicy: rename struct mempolicy 'policy' member to 'mode'Lee Schermerhorn2008-04-281-4/+0
| | | | | | | | | | | | | | | | | | | | | | The terms 'policy' and 'mode' are both used in various places to describe the semantics of the value stored in the 'policy' member of struct mempolicy. Furthermore, the term 'policy' is used to refer to that member, to the entire struct mempolicy and to the more abstract concept of the tuple consisting of a "mode" and an optional node or set of nodes. Recently, we have added "mode flags" that are passed in the upper bits of the 'mode' [or sometimes, 'policy'] member of the numa APIs. I'd like to resolve this confusion, which perhaps only exists in my mind, by renaming the 'policy' member to 'mode' throughout, and fixing up the Documentation. Man pages will be updated separately. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mempolicy: disallow static or relative flags for local preferred modeDavid Rientjes2008-04-281-2/+14
| | | | | | | | | | | | | | | | | | | | | MPOL_F_STATIC_NODES and MPOL_F_RELATIVE_NODES don't mean anything for MPOL_PREFERRED policies that were created with an empty nodemask (for purely local allocations). They'll never be invalidated because the allowed mems of a task changes or need to be rebound relative to a cpuset's placement. Also fixes a bug identified by Lee Schermerhorn that disallowed empty nodemasks to be passed to MPOL_PREFERRED to specify local allocations. [A different, somewhat incomplete, patch already existed in 25-rc5-mm1.] Cc: Paul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Cc: Andi Kleen <ak@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mempolicy: update NUMA memory policy documentationDavid Rientjes2008-04-282-31/+112
| | | | | | | | | | | | | | Updates Documentation/vm/numa_memory_policy.txt and Documentation/filesystems/tmpfs.txt to describe optional mempolicy mode flags. Cc: Christoph Lameter <clameter@sgi.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Cc: Andi Kleen <ak@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: filter based on a nodemask as well as a gfp_maskMel Gorman2008-04-281-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | The MPOL_BIND policy creates a zonelist that is used for allocations controlled by that mempolicy. As the per-node zonelist is already being filtered based on a zone id, this patch adds a version of __alloc_pages() that takes a nodemask for further filtering. This eliminates the need for MPOL_BIND to create a custom zonelist. A positive benefit of this is that allocations using MPOL_BIND now use the local node's distance-ordered zonelist instead of a custom node-id-ordered zonelist. I.e., pages will be allocated from the closest allowed node with available memory. [Lee.Schermerhorn@hp.com: Mempolicy: update stale documentation and comments] [Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask] [Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask rework] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: remove nopageNick Piggin2008-04-282-12/+0
| | | | | | | | | | Nothing in the tree uses nopage any more. Remove support for it in the core mm code and documentation (and a few stray references to it in comments). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kerneldoc for <linux/clk.h>David Brownell2008-04-281-0/+54
| | | | | | | | | | | | Add <linux/clk.h> to the generated kerneldoc, with some overview to go along with those per-function descriptions. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'kvm-updates-2.6.26' of ↵Linus Torvalds2008-04-274-0/+250
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (147 commits) KVM: kill file->f_count abuse in kvm KVM: MMU: kvm_pv_mmu_op should not take mmap_sem KVM: SVM: remove selective CR0 comment KVM: SVM: remove now obsolete FIXME comment KVM: SVM: disable CR8 intercept when tpr is not masking interrupts KVM: SVM: sync V_TPR with LAPIC.TPR if CR8 write intercept is disabled KVM: export kvm_lapic_set_tpr() to modules KVM: SVM: sync TPR value to V_TPR field in the VMCB KVM: ppc: PowerPC 440 KVM implementation KVM: Add MAINTAINERS entry for PowerPC KVM KVM: ppc: Add DCR access information to struct kvm_run ppc: Export tlb_44x_hwater for KVM KVM: Rename debugfs_dir to kvm_debugfs_dir KVM: x86 emulator: fix lea to really get the effective address KVM: x86 emulator: fix smsw and lmsw with a memory operand KVM: x86 emulator: initialize src.val and dst.val for register operands KVM: SVM: force a new asid when initializing the vmcb KVM: fix kvm_vcpu_kick vs __vcpu_run race KVM: add ioctls to save/store mpstate KVM: Rename VCPU_MP_STATE_* to KVM_MP_STATE_* ...
| * KVM: ppc: PowerPC 440 KVM implementationHollis Blanchard2008-04-271-0/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This functionality is definitely experimental, but is capable of running unmodified PowerPC 440 Linux kernels as guests on a PowerPC 440 host. (Only tested with 440EP "Bamboo" guests so far, but with appropriate userspace support other SoC/board combinations should work.) See Documentation/powerpc/kvm_440.txt for technical details. [stephen: build fix] Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Avi Kivity <avi@qumranet.com>
| * KVM: Register ioctl rangeAvi Kivity2008-04-271-0/+2
| | | | | | | | Signed-off-by: Avi Kivity <avi@qumranet.com>
| * KVM: ia64: Add a guide about how to create kvm guests on ia64Xiantao Zhang2008-04-271-0/+82
| | | | | | | | | | | | | | Guide for creating virtual machine on kvm/ia64. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
| * KVM: s390: API documentationCarsten Otte2008-04-271-0/+125
| | | | | | | | | | | | | | | | This patch adds Documentation/s390/kvm.txt, which describes specifics of kvm's user interface that are unique to s390 architecture. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* | gayle: add "doubler" parameterBartlomiej Zolnierkiewicz2008-04-271-6/+3
| | | | | | | | | | | | | | | | | | * Add "doubler" parameter to enable support for IDE doublers. * Obsolete "ide=doubler" kernel parameter. Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: add "cdrom=" and "chs=" parametersBartlomiej Zolnierkiewicz2008-04-271-17/+14
| | | | | | | | | | | | | | | | * Add "cdrom=" and "chs=" parameters. * Obsolete "hdx=cdrom" and "hdx=cyls,heads,sects" kernel parameters. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: add "nodma|noflush|noprobe|nowerr=" parametersBartlomiej Zolnierkiewicz2008-04-271-13/+13
| | | | | | | | | | | | | | | | * Add "nodma|noflush|noprobe|nowerr=" parameters. * Obsolete "hdx=noprobe|none|nowerr|nodma|noflush" kernel parameters. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: remove obsoleted "hdx=autotune" kernel parameterBartlomiej Zolnierkiewicz2008-04-271-7/+0
| | | | | | | | | | | | | | | | | | * Remove obsoleted "hdx=autotune" kernel parameter (we always auto-tune PIO if possible nowadays). * Remove no longer needed ide_drive_t.autotune flag. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: mark "idebus=" kernel parameter as obsoleted (take 2)Bartlomiej Zolnierkiewicz2008-04-271-10/+0
| | | | | | | | | | | | | | We have "vlb|pci_clock=" parameters now. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide-tape: remove comments markup from Documentation/ide/ide-tape.txtBorislav Petkov2008-04-271-67/+65
| | | | | | | | | | Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide-tape: remove pipelined mode description from Documentation/ide/ide-tape.txtBorislav Petkov2008-04-271-79/+0
| | | | | | | | | | Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: remove obsoleted "idex=" kernel parametersBartlomiej Zolnierkiewicz2008-04-272-6/+0
| | | | | | | | | | | | | | | | | | * Remove obsoleted "idex=" kernel parameters. * Make probe_* and cmd640_vlb variables static. Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: remove obsoleted "idex=reset" kernel parameterBartlomiej Zolnierkiewicz2008-04-271-2/+0
| | | | | | | | | | | | | | | | | | | | Remove obsoleted "idex=reset" kernel parameter (it has been obsoleted since 1 Nov 2004). Then remove corresponding code from ide_probe_port() and no longer used ->reset field from ide_hwif_t. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: remove obsoleted "idex=serialize" kernel parameterBartlomiej Zolnierkiewicz2008-04-271-5/+0
| | | | | | | | | | | | | | Remove obsoleted "idex=serialize" kernel parameter (it has been obsoleted since 1 Nov 2004). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: add "ignore_cable" parameter (take 2)Bartlomiej Zolnierkiewicz2008-04-271-5/+10
|/ | | | | | | | | | | | | | | | | | | | | Add "ignore_cable" parameter: * "ide_core.ignore_cable=[interface_number]" boot option if IDE is built-in (i.e. "ide_core.ignore_cable=1" to force ignoring cable for "ide1") * "ignore_cable=[interface_number]" module parameter (for ide_core module) if IDE is compiled as module v2: * Add ide_port_apply_params() helper - use it in ide_device_add_all() and ide_scan_port(). * Make it possible to later disable ignoring cable detection by passing "[interface_number]:0" to /sys/module/ide_core/parameters/ignore_cable (however sysfs interface is not enabled yet since it needs some other IDE changes to make it work reliable). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds2008-04-261-46/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (46 commits) ide: constify struct ide_dma_ops ide: add struct ide_dma_ops (take 3) ide: add IDE_HFLAG_SERIALIZE_DMA host flag sl82c105: check bridge revision in sl82c105_init_one() au1xxx-ide: use ->init_dma method palm_bk3710: use ->init_dma method sgiioc4: use ->init_dma method icside: use ->init_dma method ide-pmac: use ->init_dma method ide: do complete DMA setup in ->init_dma method (take 2) au1xxx-ide: fix MWDMA support ide: cleanup ide_setup_dma() ide: factor out setting PCI bus-mastering from ide_hwif_setup_dma() ide: export ide_allocate_dma_engine() ide: move ide_setup_dma() call out from ->init_dma method alim15x3: skip DMA initialization completely on revs < 0x20 pdc202xx_old: remove init_dma_pdc202xx() ide: don't display "BIOS" settings in ide_setup_dma() ide: remove ->cds field from ide_hwif_t (take 2) ide: remove ide_dma_iobase() ...
| * au1xxx-ide: fix MWDMA supportBartlomiej Zolnierkiewicz2008-04-261-46/+0
| | | | | | | | | | | | | | | | | | Always use "fast" MWDMA support and remove dma_{black,white}_list (they were based on completely bogus ->ide_dma_check implementation which didn't set neither the host controller timings nor the device for the desired transfer mode). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | x86, boot: Document for linked list of struct setup_dataHuang, Ying2008-04-261-0/+26
|/ | | | | | | | Documentation for linked list of struct setup_data. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* documentation: remove smart-config.txtRandy Dunlap2008-04-262-100/+0
| | | | | | | | | | As requested by Sam Ravnborg: Remove Documentation/smart-config.txt. It is outdated and has been (functionally) replaced by Documentation/kbuild/*.txt. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' of ↵Linus Torvalds2008-04-251-0/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (49 commits) [POWERPC] Add zImage.iseries to arch/powerpc/boot/.gitignore [POWERPC] bootwrapper: fix build error on virtex405-head.S [POWERPC] 4xx: Fix 460GT support to not enable FPU [POWERPC] 4xx: Add NOR FLASH entries to Canyonlands and Glacier dts [POWERPC] Xilinx: of_serial support for Xilinx uart 16550. [POWERPC] Xilinx: boot support for Xilinx uart 16550. [POWERPC] celleb: Add support for PCI Express [POWERPC] celleb: Move miscellaneous files for Beat [POWERPC] celleb: Move a file for SPU on Beat [POWERPC] celleb: Move files for Beat mmu and iommu [POWERPC] celleb: Move files for Beat hvcall interfaces [POWERPC] celleb: Move the SCC related code for celleb [POWERPC] celleb: Move the files for celleb base support [POWERPC] celleb: Consolidate io-workarounds code [POWERPC] cell: Generalize io-workarounds code [POWERPC] Add CONFIG_PPC_PSERIES_DEBUG to enable debugging for platforms/pseries [POWERPC] Convert from DBG() to pr_debug() in platforms/pseries/ [POWERPC] Register udbg console early on pseries LPAR [POWERPC] Mark udbg console as CON_ANYTIME, ie. callable early in boot [POWERPC] Set udbg_console index to 0 ...
| * [POWERPC] Xilinx: of_serial support for Xilinx uart 16550.John Linn2008-04-241-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The Xilinx 16550 uart core is not a standard 16550 because it uses word-based addressing rather than byte-based addressing. With additional properties it is compatible with the open firmware 'ns16550' compatible binding. This code updates the of_serial driver to handle the reg-offset and reg-shift properties to enable this core to be used. Signed-off-by: John Linn <john.linn@xilinx.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* | Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-ledsLinus Torvalds2008-04-251-3/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds: Add default-on trigger leds: Document the context brightness_set needs leds: Add new driver for the LEDs on the Freecom FSG-3 leds: Add support to leds with readable status leds: enable support for blink_set() platform hook in leds-gpio leds: Cleanup various whitespace and code style issues leds: disable triggers on brightness set leds: Add mail LED support for "Clevo D400P"
| * | leds: disable triggers on brightness setNémeth Márton2008-04-251-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | Disable any active triggers when the brightness attribute is set to zero. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds2008-04-254-25/+207
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (120 commits) usb: don't update devnum for wusb devices wusb: make ep0_reinit available for modules wusb: devices dont use a set address wusb: teach choose_address() about wireless devices wusb: add link wusb-usb device wusb: add authenticathed bit to usb_dev USB: remove unnecessary type casting of urb->context usb serial: more fixes and groundwork for tty changes USB: replace remaining __FUNCTION__ occurrences USB: usbfs: export the URB_NO_INTERRUPT flag to userspace USB: fix compile problems in ehci-hcd USB: ehci: qh_completions cleanup and bugfix USB: cdc-acm: signedness fix USB: add documentation about callbacks USB: don't explicitly reenable root-hub status interrupts USB: OHCI: turn off RD when remote wakeup is disabled USB: HCDs use the do_remote_wakeup flag USB: g_file_storage: ignore bulk-out data after invalid CBW USB: serial: remove endpoints setting checks from core and header USB: serial: remove unneeded number endpoints settings ...
| * | | USB: add documentation about callbacksOliver Neukum2008-04-251-0/+132
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Documentation about callbacks in USB. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | USB: add Documentation about usb_anchorOliver Neukum2008-04-251-0/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds documentation about the new usb anchor infrastructure. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | USB: serial: Remove obsolete contact addressesMatti Linnanvuori2008-04-251-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove obsolete contact addresses. Signed-off-by: Matti Linnanvuori <mattilinnanvuori@yahoo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | USB: check serial-number string after device resetAlan Stern2008-04-251-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as1048) extends the descriptor checking after a device is reset. Now the SerialNumber string descriptor is compared to its old value, in addition to the device and configuration descriptors. As a consequence, the kmalloc() call in usb_string() is now on the error-handling pathway for usb-storage. Hence its allocation type is changed to GFO_NOIO. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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