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* [PATCH] smp_processor_id() cleanupIngo Molnar2005-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a number of smp_processor_id() cleanup ideas that Arjan van de Ven and I came up with. The previous __smp_processor_id/_smp_processor_id/smp_processor_id API spaghetti was hard to follow both on the implementational and on the usage side. Some of the complexity arose from picking wrong names, some of the complexity comes from the fact that not all architectures defined __smp_processor_id. In the new code, there are two externally visible symbols: - smp_processor_id(): debug variant. - raw_smp_processor_id(): nondebug variant. Replaces all existing uses of _smp_processor_id() and __smp_processor_id(). Defined by every SMP architecture in include/asm-*/smp.h. There is one new internal symbol, dependent on DEBUG_PREEMPT: - debug_smp_processor_id(): internal debug variant, mapped to smp_processor_id(). Also, i moved debug_smp_processor_id() from lib/kernel_lock.c into a new lib/smp_processor_id.c file. All related comments got updated and/or clarified. I have build/boot tested the following 8 .config combinations on x86: {SMP,UP} x {PREEMPT,!PREEMPT} x {DEBUG_PREEMPT,!DEBUG_PREEMPT} I have also build/boot tested x64 on UP/PREEMPT/DEBUG_PREEMPT. (Other architectures are untested, but should work just fine.) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ia64: fix floating-point preemption problemPeter Chubb2005-06-08
| | | | | | | | | | | | | | | | | | | | | There've been reports of problems with CONFIG_PREEMPT=y and the high floating point partition. This is caused by the possibility of preemption and rescheduling on a different processor while saving or restioirng the high partition. The only places where the FPU state is touched are in ptrace, in switch_to(), and where handling a floating-point exception. In switch_to() preemption is off. So it's only in trap.c and ptrace.c that we need to prevent preemption. Here is a patch that adds commentary to make the conditions clear, and adds appropriate preempt_{en,dis}able() calls to make it so. In trap.c I use preempt_enable_no_resched(), as we're about to return to user space where the preemption flag will be checked anyway. Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds2005-06-08
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| * [IA64] Fill holes in FIXADDR_USER space with zero pages.David Mosberger-Tang2005-06-08
| | | | | | | | | | | | | | This fixes an oops reported by Jason Baron. Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [PATCH] AGP fix for Xen VMMKeir Fraser2005-06-07
|/ | | | | | | | | | | | | | | | | | | When Linux is running on the Xen virtual machine monitor, physical addresses are virtualised and cannot be directly referenced by the AGP GART. This patch fixes the GART driver for Xen by adding a layer of abstraction between physical addresses and 'GART addresses'. Architecture-specific functions are also defined for allocating and freeing the GATT. Xen requires this to ensure that table really is contiguous from the point of view of the GART. These extra interface functions are defined as 'no-ops' for all existing architectures that use the GART driver. Signed-off-by: Keir Fraser <keir@xensource.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Dave Jones <davej@redhat.com>
* Automatic merge of ↵Linus Torvalds2005-05-31
|\ | | | | | | rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
| * [IA64] alternate perfmon handlerTony Luck2005-05-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Charles Spirakis Some linux customers want to optimize their applications on the latest hardware but are not yet willing to upgrade to the latest kernel. This patch provides a way to plug in an alternate, basic, and GPL'ed PMU subsystem to help with their monitoring needs or for specialty work. It can also be used in case of serious unexpected bugs in perfmon. Mutual exclusion between the two subsystems is guaranteed, hence no conflict can arise from both subsystem being present. Acked-by: Stephane Eranian <eranian@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IS64-SGI] Set Altix error handling featuresRuss Anderson2005-05-17
| | | | | | | | | | | | | | | | | | The 2.6 kernel has CPE error thresholding. This patch lets SAL know of this error handling feature. The changes are SN specific. Signed-off-by: Russ Anderson (rja@sgi.com) Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] Make Altix SAL call to POD reentrantRuss Anderson2005-05-17
| | | | | | | | | | | | | | | | Change the SAL call for POD mode to be reentrant. This change is SN specific. Signed-off-by: Russ Anderson (rja@sgi.com) Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Remove some left-over empty filesLinus Torvalds2005-05-20
|/ | | | | | Hopefully the addition of -E to my applypatch script will mean that I won't have these kinds of leftovers in the future.
* [PATCH] kill <asm/ioctl32.h>Christoph Hellwig2005-05-17
| | | | | | | | | These days <linux/ioctl32.h> handles everything, no need for an asm header on just two architectures. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Automatic merge of ↵Linus Torvalds2005-05-04
|\ | | | | | | rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6.git
| * [IA64-SGI] convert some sn SAL_CALLs to ia64_sal_oemcall callsDean Nelson2005-05-04
| | | | | | | | | | | | | | | | Convert some sn SAL_CALLs to ia64_sal_oemcall calls so that they can be called by kernel modules. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] move nodepda pointer out of pdaDean Nelson2005-05-04
| | | | | | | | | | | | | | | | | | Remove the p_nodepda and p_subnodepda pointers from the pda_s structure. And then define a new per-cpu pointer to the nodepda and export it so that it can be accessed by kernel modules. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] convert AMO address found in XPC's reserved pageDean Nelson2005-05-03
| | | | | | | | | | | | | | | | | | | | This patch detects the existence of an uncached physical AMO address setup by EFI's XPBOOT (SGI) and converts it to an uncached virtual AMO address. Depends on a patch submitted on 23 March 2005 with the subject of: [PATCH 2/3] SGI Altix cross partition functionality (2nd revision) Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] SGI Altix cross partition functionality (2ndDean Nelson2005-05-03
| | | | | | | | | | | | | | | | This patch contains the shim module (XP) which interfaces between the communication module (XPC) and the functional support modules (like XPNET). Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] Add some needed externs currently not definedDean Nelson2005-05-03
| | | | | | | | | | | | | | Add some needed externs currently not defined. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] Define some additional SHub1 and Shub2 register symbolsDean Nelson2005-05-03
| | | | | | | | | | | | | | Define some additional SHub1 and SHub2 register symbols. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [PATCH] move cnodeid_to_nasid_table out of pdaDean Nelson2005-05-03
| | | | | | | | | | | | | | | | | | | | Another step in the effort to eliminate the SN pda structure. This patch moves the cnodeid_to_nasid_table field out of the pda, making it a standalone per-cpu data item, and exports it so it can be accessed by kernel modules. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] Altix patch to add bricktype knowledge to tiocxBruce Losure2005-05-03
| | | | | | | | | | | | | | | | Here is a patch to enable the SGI tiocx bus driver to distingush between FPGA-attached h/w and non-FPGA-attached h/w. Signed-off-by: Bruce Losure <blosure@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] cleanup shubio.hJes Sorensen2005-05-03
| | | | | | | | | | | | | | | | | | This patch cleans up include/asm/sn/shubio.h by removing a ton of whitespaces and running it through Lindent, reducing it's size by almost 30KB. No actual content has been changed. Signed-off-by: Jes Sorensen <jes@wildopensource.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] remove unused sn header filesJesse Barnes2005-05-03
| | | | | | | | | | | | | | | | | | This patch makes Jes' patch (which also contains the removal of fetchop.h) a bit smaller, and removes two other unused files at the same time, sndrv.h and sn_fru.h. Signed-off-by: Jesse Barnes <jbarnes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [PATCH] asm/signal.h unificationAl Viro2005-05-04
|/ | | | | | | | | | | | | | | | | New file - asm-generic/signal.h. Contains declarations of __sighandler_t, __sigrestore_t, SIG_DFL, SIG_IGN, SIG_ERR and default definitions of SIG_BLOCK, SIG_UNBLOCK and SIG_SETMASK. asm-*/signal.h switched to including it. The only exception is asm-parisc/signal.h that wants its own declaration of __sighandler_t; that one is left as-is. asm-ppc64/signal.h required one more thing - unlike everybody else it used __sigrestorer_t instead of usual __sigrestore_t. PPC64 switched to common spelling. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] consolidate SIGEV_PAD_SIZEStephen Rothwell2005-05-01
| | | | | | | | | | | | | | Discussing with Matthew Wilcox some of his outstanding patches lead me to this patch (among others). The preamble in struct sigevent can be expressed independently of the architecture. Also use __ARCH_SI_PREAMBLE_SIZE on ia64. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] move SA_xxx defines to linux/signal.hStas Sergeev2005-05-01
| | | | | | | | | | | | | | | | | | | The attached patch moves the IRQ-related SA_xxx flags (namely, SA_PROBE, SA_SAMPLE_RANDOM and SA_SHIRQ) from all the arch-specific headers to linux/signal.h. This looks like a left-over after the irq-handling code was consolidated. The code was moved to kernel/irq/*, but the flags are still left per-arch. Right now, adding a new IRQ flag to the arch-specific header, like this patch does: http://cvs.sourceforge.net/viewcvs.py/*checkout*/alsa/alsa-driver/utils/patches/pcsp-kernel-2.6.10-03.diff?rev=1.1 no longer works, it breaks the compilation for all other arches, unless you add that flag to all the other arch-specific headers too. So I think such a clean-up makes sense. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] remove all kernel BUGsMatt Mackall2005-05-01
| | | | | | | | | This patch eliminates all kernel BUGs, trims about 35k off the typical kernel, and makes the system slightly faster. Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [IA64] re-enable preempt before page allocation for pgtable quicklistMartin Hicks2005-04-26
| | | | | | | | | | | | This is a fix to the pgtable_quicklist code. There is a GFP_KERNEL allocation in pgtable_quicklist_alloc(), which spews the usual warnings if the kernel is under heavy VM pressure and the reclaim code is invoked. re-enable preempt before we allocate the new page. This patch is against 2.6.12-rc2-mm2 Signed-off-by: Martin Hicks <mort@sgi.com> Signed-off-by: Tony Luck <tony.luckintel.com>
* [IA64] Altix system controller event handlingGreg Howard2005-04-25
| | | | | | | | | | | | | | The following is an update of the patch I sent yesterday (3/9/05) incorporating suggestions from Christoph Hellwig and Andreas Schwab. It allows Altix and Altix-like systems to handle environmental events generated by the system controllers, and should apply on top of Jack Steiner's patch of 3/1/05 ("New chipset support for SN platform") and Mark Goodwin's patch of 3/8/05 ("Altix SN topology support for new chipsets and pci topology"). Signed-off-by: Greg Howard <ghoward@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] vector sharing (Large I/O system support)Kenji Kaneshige2005-04-25
| | | | | | | | | | | | | | | Current ia64 linux cannot handle greater than 184 interrupt sources because of the lack of vectors. The following patch enables ia64 linux to handle greater than 184 interrupt sources by allowing the same vector number to be shared by multiple IOSAPIC's RTEs. The design of this patch is besed on "Intel(R) Itanium(R) Processor Family Interrupt Architecture Guide". Even if you don't have a large I/O system, you can see the behavior of vector sharing by changing IOSAPIC_LAST_DEVICE_VECTOR to fewer value. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] multi-core/multi-thread identificationSuresh Siddha2005-04-25
| | | | | | | | | | | | | | | | | | | | | | Version 3 - rediffed to apply on top of Ashok's hotplug cpu patch. /proc/cpuinfo output in step with x86. This is an updated MC/MT identification patch based on the previous discussions on list. Add the Multi-core and Multi-threading detection for IPF. - Add new core and threading related fields in /proc/cpuinfo. Physical id Core id Thread id Siblings - setup the cpu_core_map and cpu_sibling_map appropriately - Handles Hot plug CPU Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Gordon Jin <gordon.jin@intel.com> Signed-off-by: Rohit Seth <rohit.seth@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Altix SN add support for slots in geoid_t locatorMark Goodwin2005-04-25
| | | | | | | | | | | This patch against ia64-test-2.6.12 is needed for forthcoming Altix chipsets. It renames geoid_any_t to geoid_common_t and splits the 8bit 'slab' field into two 4bit fields for 'slab' and 'slot'. Similar changes in the Altix SAL will retain backward compatibility for old kernels. Signed-off-by: Mark Goodwin <markgw@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Shub2 BTE support - BTE recovery codeRuss Anderson2005-04-25
| | | | | | | | | | patch 2: Shub2 BTE recovery code will be implemented in SAL. Define the SAL interface. Modify bte_error to call SAL for shub2. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Add new MMR definitions/Modify BTE initialiation&copy.Russ Anderson2005-04-25
| | | | | | | | | | patch 1: Add new MMR definitions. Modify BTE initialiation. Modify BTE copy. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] fix: warning: `ql_size' might be used uninitializedTony Luck2005-04-25
| | | | | | Oops. Should have caught this before I checked it in. Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Percpu quicklist for combined allocator for pgd/pmd/pte.Robin Holt2005-04-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces using the quicklists for pgd, pmd, and pte levels by combining the alloc and free functions into a common set of routines. This greatly simplifies the reading of this header file. This patch is simple but necessary for large numa configurations. It simply ensures that only pages from the local node are added to a cpus quicklist. This prevents the trapping of pages on a remote nodes quicklist by starting a process, touching a large number of pages to fill pmd and pte entries, migrating to another node, and then unmapping or exiting. With those conditions, the pages get trapped and if the machine has more than 100 nodes of the same size, the calculation of the pgtable high water mark will be larger than any single node so page table cache flushing will never occur. I ran lmbench lat_proc fork and lat_proc exec on a zx1 with and without this patch and did not notice any change. On an sn2 machine, there was a slight improvement which is possibly due to pages from other nodes trapped on the test node before starting the run. I did not investigate further. This patch shrinks the quicklist based upon free memory on the node instead of the high/low water marks. I have written it to enable preemption periodically and recalculate the amount to shrink every time we have freed enough pages that the quicklist size should have grown. I rescan the nodes zones each pass because other processess may be draining node memory at the same time as we are adding. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Bus driver for the CX port of SGI's TIO chip.Bruce Losure2005-04-25
| | | | | | | | This patch is to provide CX port infrastructure for SGI TIO-based h/w. Also a 'core services' driver for SGI FPGA-based h/w. Signed-off-by: Bruce Losure <blosure@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] perfmon: make pfm_sysctl a global, and other cleanupStephane Eranian2005-04-25
| | | | | | | | | | | | | | | | | | - make pfm_sysctl a global such that it is possible to enable/disable debug printk in sampling formats using PFM_DEBUG. - remove unused pfm_debug_var variable - fix a bug in pfm_handle_work where an BUG_ON() could be triggered. There is a path where pfm_handle_work() can be called with interrupts enabled, i.e., when TIF_NEED_RESCHED is set. The fix correct the masking and unmasking of interrupts in pfm_handle_work() such that we restore the interrupt mask as it was upon entry. signed-off-by: stephane eranian <eranian@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] support variable length nasids in shub2Colin Ngam2005-04-25
| | | | | | | | This patch enables our TIO IO chipset to support variable length nasids in Shub2 chipset. Signed-off-by: Colin Ngam <cngam@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Shub2 provides an addition of 2 External Interrupt events.Colin Ngam2005-04-25
| | | | | Signed-off-by: Colin Ngam <cngam@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Altix SN topology support for new chipsets and pci topologyMark Goodwin2005-04-25
| | | | | | | | | | | please accept this patch to the Altix SN platform topology export interface to support new chipsets and to export PCI topology. This follows on top of Jack Steiner's patch dated March 1st ("New chipset support for SN platform"). Signed-off-by: Mark Goodwin <markgw@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Change SAL call request code for SN systemsJack Steiner2005-04-25
| | | | | | | | | | | Change the value of the SAL call number for a new SAL request. The initial implementation in the PROM did not match what the OS expected. Since the OS can run on PROMs that do not implement the new call, changing the call number avoids the issue. New PROMs will implement the new call number. (This avoids problems with the 4.05 PROM). Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] altix: tioca chip driver (agp)Mark Maule2005-04-25
| | | | | | | | Provide a driver for the altix TIOCA AGP chipset. An agpgart backend will be provided as a separate patch. Signed-off-by: Mark Maule <maule@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] sn2-move-pci-headers.patchMark Maule2005-04-25
| | | | | | | | Move a couple of headers out of arch/ia64/sn/include/pci and into include/asm-ia64/sn. Signed-off-by: Mark Maule <maule@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] cpu hotplug: return offlined cpus to SALAshok Raj2005-04-22
| | | | | | | | | | | | | | | | This patch is required to support cpu removal for IPF systems. Existing code just fakes the real offline by keeping it run the idle thread, and polling for the bit to re-appear in the cpu_state to get out of the idle loop. For the cpu-offline to work correctly, we need to pass control of this CPU back to SAL so it can continue in the boot-rendez mode. This gives the SAL control to not pick this cpu as the monarch processor for global MCA events, and addition does not wait for this cpu to checkin with SAL for global MCA events as well. The handoff is implemented as documented in SAL specification section 3.2.5.1 "OS_BOOT_RENDEZ to SAL return State" Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] fix fls()David Mosberger-Tang2005-04-21
| | | | | | | | | | | | | | | The ia64-version of fls() never worked as intended (the bitnumbering was off by 1 and fls(0) was undefined). This patch fixes the problem by using a popcnt-based fls(), which on McKinley-derived cores is slightly faster than both ia64_fls() and generic_fls(). The resulting code, however, is bigger (7-8 bundles instead of about 3 bundles). Also switch ia64_popcnt() to __builtin_popcountl() for GCC v3.4 or newer since the compiler can predicate that and schedule it better. Thanks to Simon Derr and Matt Mackall for tracking down this bug. Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [PATCH] freepgt: arch FIRST_USER_ADDRESS 0Hugh Dickins2005-04-19
| | | | | | | | | Replace misleading definition of FIRST_USER_PGD_NR 0 by definition of FIRST_USER_ADDRESS 0 in all the MMU architectures beyond arm and arm26. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: remove arch pgd_addr_endHugh Dickins2005-04-19
| | | | | | | | | | | | ia64 and sparc64 hurriedly had to introduce their own variants of pgd_addr_end, to leapfrog over the holes in their virtual address spaces which the final clear_page_range suddenly presented when converted from pgd_index to pgd_addr_end. But now that free_pgtables respects the vma list, those holes are never presented, and the arch variants can go. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: hugetlb_free_pgd_rangeHugh Dickins2005-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ia64 and ppc64 had hugetlb_free_pgtables functions which were no longer being called, and it wasn't obvious what to do about them. The ppc64 case turns out to be easy: the associated tables are noted elsewhere and freed later, safe to either skip its hugetlb areas or go through the motions of freeing nothing. Since ia64 does need a special case, restore to ppc64 the special case of skipping them. The ia64 hugetlb case has been broken since pgd_addr_end went in, though it probably appeared to work okay if you just had one such area; in fact it's been broken much longer if you consider a long munmap spanning from another region into the hugetlb region. In the ia64 hugetlb region, more virtual address bits are available than in the other regions, yet the page tables are structured the same way: the page at the bottom is larger. Here we need to scale down each addr before passing it to the standard free_pgd_range. Was about to write a hugely_scaled_down macro, but found htlbpage_to_page already exists for just this purpose. Fixed off-by-one in ia64 is_hugepage_only_range. Uninline free_pgd_range to make it available to ia64. Make sure the vma-gathering loop in free_pgtables cannot join a hugepage_only_range to any other (safe to join huges? probably but don't bother). Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: remove MM_VM_SIZE(mm)Hugh Dickins2005-04-19
| | | | | | | | | | | | | | | | | | | | There's only one usage of MM_VM_SIZE(mm) left, and it's a troublesome macro because mm doesn't contain the (32-bit emulation?) info needed. But it too is only needed because we ignore the end from the vma list. We could make flush_pgtables return that end, or unmap_vmas. Choose the latter, since it's a natural fit with unmap_mapping_range_vma needing to know its restart addr. This does make more than minimal change, but if unmap_vmas had returned the end before, this is how we'd have done it, rather than storing the break_addr in zap_details. unmap_vmas used to return count of vmas scanned, but that's just debug which hasn't been useful in a while; and if we want the map_count 0 on exit check back, it can easily come from the final remove_vm_struct loop. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!