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* mm: now that all old mmu_gather code is gone, remove the storagePeter Zijlstra2011-05-251-2/+0
| | | | | | | | | | | | | | | | | | | | | | Fold all the mmu_gather rework patches into one for submission Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Reported-by: Hugh Dickins <hughd@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Miller <davem@davemloft.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Tony Luck <tony.luck@intel.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze: Fix sparse warning - fault.cMichal Simek2011-03-091-1/+1
| | | | | | | | | | | Warning log: CHECK arch/microblaze/mm/fault.c arch/microblaze/mm/fault.c:51:6: warning: incorrect type in initializer (different address spaces) arch/microblaze/mm/fault.c:51:6: expected unknown type 2const [noderef] *__gu_addr<asn:1> arch/microblaze/mm/fault.c:51:6: got unsigned int *<noident> arch/microblaze/mm/fault.c:68:6: warning: symbol 'bad_page_fault' was not declared. Should it be static? Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix sparse warning - consistent_alloc functionMichal Simek2011-03-091-1/+1
| | | | | | | | | | | | Warning in dma.c was caused by incorrect type in consistent_alloc function. Warning log: CHECK arch/microblaze/kernel/dma.c arch/microblaze/kernel/dma.c:53:26: warning: incorrect type in argument 1 (different base types) arch/microblaze/kernel/dma.c:53:26: expected int [signed] gfp arch/microblaze/kernel/dma.c:53:26: got restricted unsigned int [usertype] flag Signed-off-by: Michal Simek <monstr@monstr.eu>
* memblock, microblaze: Fix memblock API change falloutMichal Simek2010-09-111-5/+5
| | | | | | | | | | | | | | | | | Adopt Microblaze to the memblock API changes, to fix this build failure: CC arch/microblaze/mm/init.o arch/microblaze/mm/init.c: In function 'mm_cmdline_setup': arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no member named 'region' ... Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: linux-mm@kvack.org Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> LKML-Reference: <4C8B2A9A.1040303@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge commit 'v2.6.36-rc3' into x86/memblockIngo Molnar2010-08-312-22/+1
|\ | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/kernel/trampoline.c mm/memblock.c Merge reason: Resolve the conflicts, update to latest upstream. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * microblaze: Add KGDB supportMichal Simek2010-08-041-15/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kgdb uses brki r16, 0x18 instruction to call low level _debug_exception function which save current state to pt_regs and call microblaze_kgdb_break function. _debug_exception should be called only from the kernel space. User space calling is not supported because user application debugging uses different handling. pt_regs_to_gdb_regs loads additional special registers which can't be changed * Enable KGDB in Kconfig * Remove ancient not-tested KGDB support * Remove ancient _debug_exception code from entry.S Only MMU KGDB support is supported. Signed-off-by: Michal Simek <monstr@monstr.eu> CC: Jason Wessel <jason.wessel@windriver.com> CC: John Williams <john.williams@petalogix.com> CC: Edgar E. Iglesias <edgar.iglesias@petalogix.com> CC: linux-kernel@vger.kernel.org Acked-by: Jason Wessel <jason.wessel@windriver.com>
| * microblaze: Sync noMMU and MMU setup_memoryMichal Simek2010-08-041-6/+1
| | | | | | | | | | | | Both versions can use the same node to register NODE_DATA(0) Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove unused labelMichal Simek2010-08-041-1/+0
| | | | | | | | | | | | | | | | | | | | | | The label should be remove by 21e1c93631e027136ea4070e7bca600c4ad4f391 Warning message: arch/microblaze/mm/fault.c: In function 'do_page_fault': arch/microblaze/mm/fault.c:229: warning: label 'survive' defined but not used Signed-off-by: Michal Simek <monstr@monstr.eu>
* | memblock/microblaze: Use new accessorsBenjamin Herrenschmidt2010-08-041-11/+9
| | | | | | | | | | CC: Michal Simek <monstr@monstr.eu> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | memblock: Rename memblock_region to memblock_type and memblock_property to ↵Benjamin Herrenschmidt2010-08-041-2/+2
|/ | | | | | memblock_region Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* lmb: rename to memblockYinghai Lu2010-07-141-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | via following scripts FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/lmb/memblock/g' \ -e 's/LMB/MEMBLOCK/g' \ $FILES for N in $(find . -name lmb.[ch]); do M=$(echo $N | sed 's/lmb/memblock/g') mv $N $M done and remove some wrong change like lmbench and dlmb etc. also move memblock.c from lib/ to mm/ Suggested-by: Ingo Molnar <mingo@elte.hu> Acked-by: "H. Peter Anvin" <hpa@zytor.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* microblaze: export assembly functions used by modulesMichal Simek2010-05-132-0/+2
| | | | | | Export __strncpy_user, memory_size, ioremap_bot for modules. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix consistent-sync codeMichal Simek2010-05-061-1/+1
| | | | | | PCI_DMA_FROMDEVICE should call invalidation not flushing. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix consistent codeMichal Simek2010-05-061-90/+98
| | | | | | | | | | | | This patch fix consistent code which had problems with consistent_free function. I am not sure if we need to call flush_tlb_all after it but it keeps tlbs synced. I added noMMU and MMU version together. Uncached shadow feature is not tested. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: invoke oom-killer from page faultNick Piggin2010-05-061-9/+4
| | | | | | | | | | | | | As explained in commit 1c0fe6e3bd, we want to call the architecture independent oom killer when getting an unexplained OOM from handle_mm_fault, rather than simply killing current. Cc: microblaze-uclinux@itee.uq.edu.au Cc: Michal Simek <monstr@monstr.eu> Cc: linux-arch@vger.kernel.org Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove ancient codeMichal Simek2010-05-061-36/+0
| | | | | | I found several function which we don't use that's why I am removing them. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Quiet section mismatch warnings for MMU versionMichal Simek2010-05-061-0/+15
| | | | | | | | | | | | | Remove section mismatch - based on ppc aproach. WARNING: vmlinux.o(.text+0x64834): Section mismatch in reference from the function __pte_alloc_kernel() to the function .init.text:early_get_page() The function __pte_alloc_kernel() references the function __init early_get_page(). This is often because __pte_alloc_kernel lacks a __init annotation or the annotation of early_get_page is wrong. Signed-off-by: Michal Simek <monstr@monstr.eu>
* Merge branch 'master' into export-slabhTejun Heo2010-04-053-22/+13
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| * microblaze: Adding likely macrosMichal Simek2010-04-012-13/+13
| | | | | | | | | | | | | | On the base on GCOV analytics is helpful to add likely/unlikely macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: move noMMU __range_ok function to uaccess.hMichal Simek2010-04-011-8/+0
| | | | | | | | | | | | | | The same noMMU and MMU functions should be placed in one file. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove memset in free_init_pagesMichal Simek2010-04-011-1/+0
| | | | | | | | | | | | We don't need to do it. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-302-0/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* microblaze: PCI early support for noMMU systemMichal Simek2010-03-111-5/+9
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add consistent codeMichal Simek2010-03-112-1/+247
| | | | | | | | | | | | | | | Remove ancient Kconfig option for consistent code. MMU uses cache inhibit pages. noMMU uses UNCACHE SHADOW feature where is used double ram size. For example: Physical ram is 256MB and cache are setup to cover the same size. But if you setup in HW that size is 512MB and cache covers 256MB than you can use adresses from 256-512MB without caches and correspond with 0-256MB with cache. That's why I am using dcache base/high addresses to find out uncache area. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove VMALLOC_VMADDRMichal Simek2010-03-111-1/+1
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Use generic show_mem()Michal Simek2010-03-111-6/+0
| | | | | | | | Remove arch-specific show_mem() in favor of the generic version. It is based on powerpc patch. bda2fa535564ace56a395d5b65c6dc81305401fa Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add {z,}alloc_maybe_bootmem functionsMichal Simek2010-03-111-0/+23
| | | | | | I will need {z,}alloc_maybe_bootmem functions for pci patches Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove show_tmem functionMichal Simek2009-12-141-10/+0
| | | | | | | show_tmem function do nothing that's why I removed it. There is also cleaning of commented ancient code. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Export memory_start for modulesMichal Simek2009-12-141-0/+1
| | | | | | memory_start symbol is needed by kernel modules. Signed-off-by: Michal Simek <monstr@monstr.eu>
* Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2009-09-241-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (24 commits) microblaze: Disable heartbeat/enable emaclite in defconfigs microblaze: Support simpleImage.dts make target microblaze: Fix _start symbol to physical address microblaze: Use LOAD_OFFSET macro to get correct LMA for all sections microblaze: Create the LOAD_OFFSET macro used to compute VMA vs LMA offsets microblaze: Copy ppc asm-compat.h for clean handling of constants in asm and C microblaze: Actually show KiB rather than pages in "Freeing initrd memory:" microblaze: Support ptrace syscall tracing. microblaze: Updated CPU version and FPGA family codes in PVR microblaze: Generate correct signal and siginfo for integer div-by-zero microblaze: Don't be noisy when userspace causes hardware exceptions microblaze: Remove ipc.h file which points to non-existing asm-generic file microblaze: Clear sticky FSR register after generating exception signals microblaze: Ensure CPU usermode is set on new userspace processes microblaze: Use correct kbuild variable KBUILD_CFLAGS microblaze: Save and restore msr in hw exception microblaze: Add architectural support for USB EHCI host controllers microblaze: Implement include/asm/syscall.h. microblaze: Improve checking mechanism for MSR instruction microblaze: Add checking mechanism for MSR instruction ...
| * microblaze: Actually show KiB rather than pages in "Freeing initrd memory:"Lennart Sorensen2009-09-221-1/+2
| | | | | | | | | | | | | | | | Fix "Freeing initrd memory:" message on microblaze to show kilobytes as claimed rather than number of pages. Signed-off-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca> Signed-off-by: Michal Simek <monstr@monstr.eu>
* | arches: drop superfluous casts in nr_free_pages() callersGeert Uytterhoeven2009-09-221-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 96177299416dbccb73b54e6b344260154a445375 ("Drop free_pages()") modified nr_free_pages() to return 'unsigned long' instead of 'unsigned int'. This made the casts to 'unsigned long' in most callers superfluous, so remove them. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Chris Zankel <zankel@tensilica.com> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze: Use klimit instead of _end for memory initMichal Simek2009-08-181-3/+3
| | | | | | | | | | | | | | For noMMU system when you use larger rootfs image there is problem with using _end label because we increase klimit but in memory initialization we use still _end which is wrong. Larger mtd rootfs was rewritten by init_bootmem_node. MMU kernel use static initialization where klimit is setup to _end. There is no any other hanling with klimit. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Support unaligned address for put/get_user macrosMichal Simek2009-07-271-1/+1
| | | | | | | | | | | | | | | This patch add support for cases where load/store instruction in put/get_user macro gets unaligned pointer to data and this address is not valid. I prevent all cases which can failed. I had to disable first stage of unaligned handler which is used only for noMMU kernel and the whole work is done when interrupt is enabled. You have enable HW support for detect unaligned access in Microblaze. This patch fixed three LTP tests: getpeername01, getsockname01, socketpair01 Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix do_page_fault for no contextMichal Simek2009-07-271-9/+4
| | | | | | | | Calling fixup when we are in kernel mode. This prevent fault for copy_to/from_user. This fault was find thanks to writev01/03/04 LTP tests. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix cast warning for init.cMichal Simek2009-07-061-3/+3
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* Move FAULT_FLAG_xyz into handle_mm_fault() callersLinus Torvalds2009-06-211-1/+1
| | | | | | | | | | This allows the callers to now pass down the full set of FAULT_FLAG_xyz flags to handle_mm_fault(). All callers have been (mechanically) converted to the new calling convention, there's almost certainly room for architectures to clean up their code and then add FAULT_FLAG_RETRY when that support is added. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze_mmu_v2: MakefilesMichal Simek2009-05-261-0/+2
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Page table - ioremap - pgtable.c/h, section updateMichal Simek2009-05-261-0/+286
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Context handling - mmu_context.c/hMichal Simek2009-05-261-0/+70
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Page fault handling high level - fault.cMichal Simek2009-05-261-0/+304
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: MMU initializationMichal Simek2009-05-261-4/+154
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* Microblaze: Remove unused variable from paging initMichal Simek2009-05-211-1/+0
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix paging init-zone initializationSteve Magnani2009-05-211-4/+3
| | | | | | | | | | | | | | This patch fix problem with bad zone initialization. This bug wasn't perform because Microblaze doesn't define CONFIG_ZONE_DMA and ZONE_NORMAL was 0 for this case that's why free_area_init works with correct values. Original message: I believe that the switch from ZONE_DMA (== 0) to ZONE_NORMAL broke the free area initialization. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: export some symbolsArnd Bergmann2009-05-211-1/+2
| | | | | | | | Some device drivers require the symbols _ebss, kernel_thread, __page_offset or ___range_ok, so export them. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: Makefiles for Microblaze cpuMichal Simek2009-03-271-0/+5
| | | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: memory inicialization, MMU, TLBMichal Simek2009-03-271-0/+201
Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
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