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* sparc,sparc64: unify mm/Sam Ravnborg2008-12-04
| | | | | | | | | | | - move all sparc64/mm/ files to arch/sparc/mm/ - commonly named files are named _64.c - add files to sparc/mm/Makefile preserving link order - delete now unused sparc64/mm/Makefile - sparc64 now finds mm/ in sparc Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Stop using memory barriers for atomics and locks.David S. Miller2008-12-04
| | | | | | | | | The kernel always executes in the TSO memory model now, so none of this stuff is necessary any more. With helpful feedback from Nick Piggin. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64 trivial section misannotationsAl Viro2008-11-30
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sparc64: Kill sparse warnings in mm/init.hDavid S. Miller2008-09-12
| | | | | | | | | | | 1) Several exported symbols need extern decls, they are exported not for C code but for assembler routines. 2) PAGE_EXEC isn't used, delete 3) Several larger than 32-bit constants need "UL" markers Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2008-09-08
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 Conflicts: arch/sparc/kernel/of_device.c
| * sparc64: setup_valid_addr_bitmap_from_pavail() should be __initDavid S. Miller2008-08-30
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc64: Implement SSTATE purely using notifiers and initcalls.David S. Miller2008-09-02
| | | | | | | | | | | | | | Don't clutter up the tree with sstate_blah() scattered all over the place. Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc64: Clean up CPU chip type probing code.David S. Miller2008-09-01
| | | | | | | | | | | | | | | | | | | | | | | | | | Three main things: 1) Make prober an arch initcall instead of using hard-coded invocation from paging_init() 2) Shrink table size, the fpu ident stuff was never used. 3) Use named struct initialized in table. Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc64: Rewrite central driver.David S. Miller2008-08-31
| | | | | | | | | | | | | | | | | | | | | | This driver is now limited to just doing the basic clock board and FHC chip initialization and registering the platform devices for the per-board LEDs, which are driven by the new LEDS_STARFIRE driver. The IRQ register handling is already confined purely to the device tree code. Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc64: Add JBUS NUMA detection.David S. Miller2008-08-24
|/ | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Fix cmdline_memory_size handling bugs.David S. Miller2008-08-14
| | | | | | | | | | | | | | | | | | | | | | | First, lmb_enforce_memory_limit() interprets it's argument (mostly, heh) as a size limit not an address limit. So pass the raw cmdline_memory_size value into it. And we don't need to check it against zero, lmb_enforce_memory_limit() does that for us. Next, free_initmem() needs special handling when the kernel command line trims the available memory. The problem case is if the trimmed out memory is where the kernel image itself resides. When that memory is trimmed out, we don't add those physical ram areas to the sparsemem active ranges, amongst other things. Which means that this free_initmem() code will free up invalid page structs, resulting in either crashes or hangs. Just quick fix this by not freeing initmem at all if "mem=" was given on the boot command line. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Fix overshoot in nid_range().David S. Miller2008-08-14
| | | | | | | If 'start' does not begin on a page boundary, we can overshoot past 'end'. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Implement IRQ stacks.David S. Miller2008-08-12
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: use generic show_mem()Johannes Weiner2008-07-26
| | | | | | | | | | | | | | | | | | | Remove arch-specific show_mem() in favor of the generic version. This also removes the following redundant information display: - free swap pages, printed by show_swap_cache_info() - pages in swapcache, printed by show_swap_cache_info() - dirty pages, writeback pages, mapped pages, slab pages, pagetables pages, printed by show_free_areas() where show_mem() calls show_free_areas(), which calls show_swap_cache_info(). Signed-off-by: Johannes Weiner <hannes@saeurebad.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: move bootmem descriptors definition to a single placeJohannes Weiner2008-07-24
| | | | | | | | | | | | | | | | | | | | | | | | There are a lot of places that define either a single bootmem descriptor or an array of them. Use only one central array with MAX_NUMNODES items instead. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Richard Henderson <rth@twiddle.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Tony Luck <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David S. Miller <davem@davemloft.net> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sparc64: remove CVS keywordsAdrian Bunk2008-05-20
| | | | | | | | This patch removes the CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Fix lmb_reserve() args in find_ramdisk().David S. Miller2008-05-16
| | | | | | | | | | | | | This fixes the missing ram regression reported by Mikael Pettersson <mikpe@it.uu.se>, much thanks for all of this help in diagnosing this. The second argument to lmb_reserve() is a size, not an end address bounds. Tested-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Work around memory probing bug in openfirmware.David S. Miller2008-05-12
| | | | | | | | | | | | | | Read all of the OF memory and translation tables, then read the physical available memory list twice. When making these requests, OF can allocate more memory to do it's job, which can remove pages from the available memory list. So fetch in all of the tables at once, and fetch the available list last to make sure we read a stable value. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Fix initrd regression.David S. Miller2008-05-06
| | | | | | | | | We die because we forget to convert initrd_start and initrd_end to virtual addresses. Reported by Mikael Pettersson Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: remove online_page()Adrian Bunk2008-05-05
| | | | | | | | | The identical online_page() implementations from all architectures got moved to mm/memory_hotplug.c - except for the sparc64 one that even was dead code due to MEMORY_HOTPLUG not being available there. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Export symbols for ZERO_PAGE usage in modules.Aneesh Kumar K.V2008-04-29
| | | | | | | | | | ext4 uses ZERO_PAGE(0) to zero out blocks. We need to export different symbols in different arches for the usage of ZERO_PAGE in modules. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* pageflags: get rid of FLAGS_RESERVEDChristoph Lameter2008-04-28
| | | | | | | | | | | | | | | | | | | | | | NR_PAGEFLAGS specifies the number of page flags we are using. From that we can calculate the number of bits leftover that can be used for zone, node (and maybe the sections id). There is no need anymore for FLAGS_RESERVED if we use NR_PAGEFLAGS. Use the new methods to make NR_PAGEFLAGS available via the preprocessor. NR_PAGEFLAGS is used to calculate field boundaries in the page flags fields. These field widths have to be available to the preprocessor. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: David Miller <davem@davemloft.net> Cc: Andy Whitcroft <apw@shadowen.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SPARC64]: Add NUMA support.David S. Miller2008-04-24
| | | | | | | | Currently there is only code to parse NUMA attributes on sun4v/niagara systems, but later on we will add such parsing for older systems. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Initialize MDESC earlier and use lmb_alloc()David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use lmb_alloc() for PROM device tree.David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Call real_setup_per_cpu_areas() earlier and use lmb_alloc().David S. Miller2008-04-24
| | | | | | | We have to do it like this before we can move the PROM and MDESC device tree code over to using lmb_alloc(). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fully use LMB information in bootmem_init().David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Start using LMB information in bootmem_init().David S. Miller2008-04-24
| | | | | | | This allows us to kill the incredibly complicated and stupid function trim_pavail(). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Initialize LMB tables.David S. Miller2008-04-24
| | | | | | | Call lmb_add() on available regions, and call lmb_reserve() on the main kernel image and the ramdisk (if any). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Move ramdisk discovery code out to seperate function.David S. Miller2008-04-24
| | | | | | | And add some comments explaining all of the quirks involved in the way the bootloader provides this information. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix sparse errors in arch/sparc64/kernel/traps.cDavid S. Miller2008-03-26
| | | | | | | | | | | | | Add 'UL' markers to DCU_* macros. Declare C functions called from assembler in entry.h Declare C functions called from within the sparc64 arch code in include/asm-sparc64/*.h headers as appropriate. Remove unused routines in traps.c Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/{cpu,setup}.cDavid S. Miller2008-03-26
| | | | | | | | | We create a local header file entry.h, under arch/sparc64/kernel/, that we can use to declare routines either defined in assembler or only invoked from assembler. As well as other data objects which are private to the inner sparc64 kernel arch code. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Remove most limitations to kernel image size.David S. Miller2008-03-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently kernel images are limited to 8MB in size, and this causes problems especially when enabling features that take up a lot of kernel image space such as lockdep. The code now will align the kernel image size up to 4MB and map that many locked TLB entries. So, the only practical limitation is the number of available locked TLB entries which is 16 on Cheetah and 64 on pre-Cheetah sparc64 cpus. Niagara cpus don't actually have hw locked TLB entry support. Rather, the hypervisor transparently provides support for "locked" TLB entries since it runs with physical addressing and does the initial TLB miss processing. Fully utilizing this change requires some help from SILO, a patch for which will be submitted to the maintainer. Essentially, SILO will only currently map up to 8MB for the kernel image and that needs to be increased. Note that neither this patch nor the SILO bits will help with network booting. The openfirmware code will only map up to a certain amount of kernel image during a network boot and there isn't much we can to about that other than to implemented a layered network booting facility. Solaris has this, and calls it "wanboot" and we may implement something similar at some point. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix section mismatch from kernel_map_rangeSam Ravnborg2008-02-24
| | | | | | | | | | | | | | Fix following warnings: WARNING: vmlinux.o(.text+0x4f980): Section mismatch in reference from the function kernel_map_range() to the function .init.text:__alloc_bootmem() WARNING: vmlinux.o(.text+0x4f9cc): Section mismatch in reference from the function kernel_map_range() to the function .init.text:__alloc_bootmem() alloc_bootmem() is only used during early init and for any subsequent call to kernel_map_range() the program logic avoid the call. So annotate kernel_map_range() with __ref to tell modpost to ignore the reference to a __init function. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Always register a PROM based early console.David S. Miller2008-02-18
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Remove DEBUG_BOOTMEM.David S. Miller2008-02-13
| | | | | | | We'll replace it in the future with better logging facilities that can be enabled at run time. Signed-off-by: David S. Miller <davem@davemloft.net>
* Introduce flags for reserve_bootmem()Bernhard Walle2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | This patchset adds a flags variable to reserve_bootmem() and uses the BOOTMEM_EXCLUSIVE flag in crashkernel reservation code to detect collisions between crashkernel area and already used memory. This patch: Change the reserve_bootmem() function to accept a new flag BOOTMEM_EXCLUSIVE. If that flag is set, the function returns with -EBUSY if the memory already has been reserved in the past. This is to avoid conflicts. Because that code runs before SMP initialisation, there's no race condition inside reserve_bootmem_core(). [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix powerpc build] Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: <linux-arch@vger.kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SPARC64: use generic percputravis@sgi.com2008-01-30
| | | | | | | | | | | | Sparc64 has a way of providing the base address for the per cpu area of the currently executing processor in a global register. Sparc64 also provides a way to calculate the address of a per cpu area from a base address instead of performing an array lookup. Cc: David Miller <davem@davemloft.net> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* [SPARC64]: Fix two kernel linear mapping setup bugs.David S. Miller2007-12-13
| | | | | | | | | | | | | | | | This was caught and identified by Greg Onufer. Since we setup the 256M/4M bitmap table after taking over the trap table, it's possible for some 4M mapping to get loaded in the TLB beforhand which later will be 256M mappings. This can cause illegal TLB multiple-match conditions. Fix this by setting up the bitmap before we take over the trap table. Next, __flush_tlb_all() was not doing anything on hypervisor platforms. Fix by adding sun4v_mmu_demap_all() and calling it. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: __inline__ --> inlineDavid S. Miller2007-10-27
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* fix memory hot remove not configured case.KAMEZAWA Hiroyuki2007-10-16
| | | | | | | | | | | | | | | | | | | | | | Now, arch dependent code around CONFIG_MEMORY_HOTREMOVE is a mess. This patch cleans up them. This is against 2.6.23-rc6-mm1. - fix compile failure on ia64/ CONFIG_MEMORY_HOTPLUG && !CONFIG_MEMORY_HOTREMOVE case. - For !CONFIG_MEMORY_HOTREMOVE, add generic no-op remove_memory(), which returns -EINVAL. - removed remove_pages() only used in powerpc. - removed no-op remove_memory() in i386, sh, sparc64, x86_64. - only powerpc returns -ENOSYS at memory hot remove(no-op). changes it to return -EINVAL. Note: Currently, only ia64 supports CONFIG_MEMORY_HOTREMOVE. I welcome other archs if there are requirements and testers. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SPARC64: SPARSEMEM_VMEMMAP supportDavid Miller2007-10-16
| | | | | | | | | | | [apw@shadowen.org: style fixups] [apw@shadowen.org: vmemmap sparc64: convert to new config options] Signed-off-by: Andy Whitcroft <apw@shadowen.org> Acked-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Christoph Lameter <clameter@sgi.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SPARC64]: Only use bypass accesses to INO buckets.David S. Miller2007-10-14
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fill holes in hypervisor APIs and fix KTSB registry.David S. Miller2007-05-29
| | | | | | | | | | | Several interfaces were missing and others misnumbered or improperly documented. Also, make sure to check the return value when registering the kernel TSBs with the hypervisor. This helped to find the 4MB kernel TSB alignment bug fixed in a previous changeset. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix two bugs wrt. kernel 4MB TSB.David S. Miller2007-05-29
| | | | | | | | | | | | 1) The TSB lookup was not using the correct hash mask. 2) It was not aligned on a boundary equal to it's size, which is required by the sun4v Hypervisor. wasn't having it's return value checked, and that bug will be fixed up as well in a subsequent changeset. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Eliminate NR_CPUS limitations.David S. Miller2007-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | Cheetah systems can have cpuids as large as 1023, although physical systems don't have that many cpus. Only three limitations existed in the kernel preventing arbitrary NR_CPUS values: 1) dcache dirty cpu state stored in page->flags on D-cache aliasing platforms. With some build time calculations and some build-time BUG checks on page->flags layout, this one was easily solved. 2) The cheetah XCALL delivery code could only handle a cpumask with up to 32 cpus set. Some simple looping logic clears that up too. 3) thread_info->cpu was a u8, easily changed to a u16. There are a few spots in the kernel that still put NR_CPUS sized arrays on the kernel stack, but that's not a sparc64 specific problem. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use machine description and OBP properly for cpu probing.David S. Miller2007-05-29
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Report proper system soft state to the hypervisor.David S. Miller2007-05-29
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Spelling fixes.Simon Arlott2007-05-12
| | | | | | | Spelling fixes in arch/sparc64/. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
* Quicklist support for sparc64David Miller2007-05-07
| | | | | | | | | | | | | | I ported this to sparc64 as per the patch below, tested on UP SunBlade1500 and 24 cpu Niagara T1000. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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