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* memblock: make memblock_set_node() support different memblock_typeTang Chen2014-01-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [sfr@canb.auug.org.au: fix powerpc build] Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Rafael J . Wysocki" <rjw@sisk.pl> Cc: Chen Tang <imtangchen@gmail.com> Cc: Gong Chen <gong.chen@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Len Brown <lenb@kernel.org> Cc: Liu Jiang <jiang.liu@huawei.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Taku Izumi <izumi.taku@jp.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Renninger <trenn@suse.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm/arch: use __free_reserved_page() to simplify the codeXishi Qiu2013-11-12
| | | | | | | | | | | | | | | | | | | | Use __free_reserved_page() to simplify the code in arch. It used split_page() in consistent_alloc()/__dma_alloc_coherent()/dma_alloc_coherent(), so page->_count == 1, and we can free it safely. __free_reserved_page() ClearPageReserved() init_page_count() // it won't change the value __free_page() Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* arch: mm: pass userspace fault flag to generic fault handlerJohannes Weiner2013-09-12
| | | | | | | | | | | | | | | | | | | | Unlike global OOM handling, memory cgroup code will invoke the OOM killer in any OOM situation because it has no way of telling faults occuring in kernel context - which could be handled more gracefully - from user-triggered faults. Pass a flag that identifies faults originating in user space from the architecture-specific fault handlers to generic code so that memcg OOM handling can be improved. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: azurIt <azurit@pobox.sk> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm/microblaze: prepare for removing num_physpages and simplify mem_init()Jiang Liu2013-07-03
| | | | | | | | | Prepare for removing num_physpages and simplify mem_init(). Signed-off-by: Jiang Liu <jiang.liu@huawei.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>
* mm: concentrate modification of totalram_pages into the mm coreJiang Liu2013-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Concentrate code to modify totalram_pages into the mm core, so the arch memory initialized code doesn't need to take care of it. With these changes applied, only following functions from mm core modify global variable totalram_pages: free_bootmem_late(), free_all_bootmem(), free_all_bootmem_node(), adjust_managed_page_count(). With this patch applied, it will be much more easier for us to keep totalram_pages and zone->managed_pages in consistence. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: David Howells <dhowells@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: <sworddragon2@aol.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Michel Lespinasse <walken@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Rik van Riel <riel@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: enhance free_reserved_area() to support poisoning memory with zeroJiang Liu2013-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Address more review comments from last round of code review. 1) Enhance free_reserved_area() to support poisoning freed memory with pattern '0'. This could be used to get rid of poison_init_mem() on ARM64. 2) A previous patch has disabled memory poison for initmem on s390 by mistake, so restore to the original behavior. 3) Remove redundant PAGE_ALIGN() when calling free_reserved_area(). Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: <sworddragon2@aol.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Michel Lespinasse <walken@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Rik van Riel <riel@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: change signature of free_reserved_area() to fix building warningsJiang Liu2013-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change signature of free_reserved_area() according to Russell King's suggestion to fix following build warnings: arch/arm/mm/init.c: In function 'mem_init': arch/arm/mm/init.c:603:2: warning: passing argument 1 of 'free_reserved_area' makes integer from pointer without a cast [enabled by default] free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL); ^ In file included from include/linux/mman.h:4:0, from arch/arm/mm/init.c:15: include/linux/mm.h:1301:22: note: expected 'long unsigned int' but argument is of type 'void *' extern unsigned long free_reserved_area(unsigned long start, unsigned long end, mm/page_alloc.c: In function 'free_reserved_area': >> mm/page_alloc.c:5134:3: warning: passing argument 1 of 'virt_to_phys' makes pointer from integer without a cast [enabled by default] In file included from arch/mips/include/asm/page.h:49:0, from include/linux/mmzone.h:20, from include/linux/gfp.h:4, from include/linux/mm.h:8, from mm/page_alloc.c:18: arch/mips/include/asm/io.h:119:29: note: expected 'const volatile void *' but argument is of type 'long unsigned int' mm/page_alloc.c: In function 'free_area_init_nodes': mm/page_alloc.c:5030:34: warning: array subscript is below array bounds [-Warray-bounds] Also address some minor code review comments. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Reported-by: Arnd Bergmann <arnd@arndb.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: <sworddragon2@aol.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Michel Lespinasse <walken@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Rik van Riel <riel@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze: Fix initrd supportMichal Simek2013-05-09
| | | | | | Initrd/ramdisk support has been never validated. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* mm/microblaze: use free_highmem_page() to free highmem pages into buddy systemJiang Liu2013-04-29
| | | | | | | | | | Use helper function free_highmem_page() to free highmem pages into the buddy system. Signed-off-by: Jiang Liu <jiang.liu@huawei.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>
* mm/microblaze: use common help functions to free reserved pagesJiang Liu2013-04-29
| | | | | | | | | Use common help functions to free reserved pages. Signed-off-by: Jiang Liu <jiang.liu@huawei.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: Do not use module.h in files which are not modulesMichal Simek2013-02-12
| | | | | | | | | Based on the patch: "lib: reduce the use of module.h wherever possible" (sha1: 8bc3bcc93a2b4e47d5d410146f6546bca6171663) fix all microblaze files which are not modules. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* microblaze: Fix coding style issuesMichal Simek2013-02-12
| | | | | | Fix coding style issues reported by checkpatch.pl. Signed-off-by: Michal Simek <monstr@monstr.eu>
* readahead: fault retry breaks mmap file read random detectionShaohua Li2012-10-09
| | | | | | | | | | | | | | | | | | | .fault now can retry. The retry can break state machine of .fault. In filemap_fault, if page is miss, ra->mmap_miss is increased. In the second try, since the page is in page cache now, ra->mmap_miss is decreased. And these are done in one fault, so we can't detect random mmap file access. Add a new flag to indicate .fault is tried once. In the second try, skip ra->mmap_miss decreasing. The filemap_fault state machine is ok with it. I only tested x86, didn't test other archs, but looks the change for other archs is obvious, but who knows :) Signed-off-by: Shaohua Li <shaohua.li@fusionio.com> Cc: Rik van Riel <riel@redhat.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze: Port OOM changes to do_page_faultKautuk Consul2012-05-25
| | | | | | | | | | | | | | | | | Commit d065bd810b6deb67d4897a14bfe21f8eb526ba99 (mm: retry page fault when blocking on disk transfer) and commit 37b23e0525d393d48a7d59f870b3bc061a30ccdb (x86,mm: make pagefault killable) The above commits introduced changes into the x86 pagefault handler for making the page fault handler retryable as well as killable. These changes reduce the mmap_sem hold time, which is crucial during OOM killer invocation. Port these changes to microblaze. Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com>
* Merge tag 'split-asm_system_h-for-linus-20120328' of ↵Linus Torvalds2012-03-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system Pull "Disintegrate and delete asm/system.h" from David Howells: "Here are a bunch of patches to disintegrate asm/system.h into a set of separate bits to relieve the problem of circular inclusion dependencies. I've built all the working defconfigs from all the arches that I can and made sure that they don't break. The reason for these patches is that I recently encountered a circular dependency problem that came about when I produced some patches to optimise get_order() by rewriting it to use ilog2(). This uses bitops - and on the SH arch asm/bitops.h drags in asm-generic/get_order.h by a circuituous route involving asm/system.h. The main difficulty seems to be asm/system.h. It holds a number of low level bits with no/few dependencies that are commonly used (eg. memory barriers) and a number of bits with more dependencies that aren't used in many places (eg. switch_to()). These patches break asm/system.h up into the following core pieces: (1) asm/barrier.h Move memory barriers here. This already done for MIPS and Alpha. (2) asm/switch_to.h Move switch_to() and related stuff here. (3) asm/exec.h Move arch_align_stack() here. Other process execution related bits could perhaps go here from asm/processor.h. (4) asm/cmpxchg.h Move xchg() and cmpxchg() here as they're full word atomic ops and frequently used by atomic_xchg() and atomic_cmpxchg(). (5) asm/bug.h Move die() and related bits. (6) asm/auxvec.h Move AT_VECTOR_SIZE_ARCH here. Other arch headers are created as needed on a per-arch basis." Fixed up some conflicts from other header file cleanups and moving code around that has happened in the meantime, so David's testing is somewhat weakened by that. We'll find out anything that got broken and fix it.. * tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits) Delete all instances of asm/system.h Remove all #inclusions of asm/system.h Add #includes needed to permit the removal of asm/system.h Move all declarations of free_initmem() to linux/mm.h Disintegrate asm/system.h for OpenRISC Split arch_align_stack() out from asm-generic/system.h Split the switch_to() wrapper out of asm-generic/system.h Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h Create asm-generic/barrier.h Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h Disintegrate asm/system.h for Xtensa Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] Disintegrate asm/system.h for Tile Disintegrate asm/system.h for Sparc Disintegrate asm/system.h for SH Disintegrate asm/system.h for Score Disintegrate asm/system.h for S390 Disintegrate asm/system.h for PowerPC Disintegrate asm/system.h for PA-RISC Disintegrate asm/system.h for MN10300 ...
| * Disintegrate asm/system.h for MicroblazeDavid Howells2012-03-28
| | | | | | | | | | | | | | Disintegrate asm/system.h for Microblaze. Not compiled. Signed-off-by: David Howells <dhowells@redhat.com> cc: microblaze-uclinux@itee.uq.edu.au
* | microblaze: Improve TLB calculation for small systemsMichal Simek2012-03-23
| | | | | | | | | | | | | | | | Systems with small amount of memory need to be handled differently. Linux can't allocate the whole 32MB with two TLBs because then there is no MMU protection. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: Fix mapin_ram functionMichal Simek2012-03-23
| | | | | | | | | | | | | | | | | | | | Fix how many pages are allocated in mapin_ram. It is lowmem_size not setup CONFIG_LOWMEM_SIZE because it is the same for all systems. Which means that wrong pages are allocated if memory size is smaller than CONFIG_LOWMEM_SIZE. It has dramatic impact on bootup time. On sp605 MMU full hw design is 7s. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: Highmem supportMichal Simek2012-03-23
| | | | | | | | | | | | The first highmem implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: Use active regionsMichal Simek2012-03-23
| | | | | | | | | | | | Register lowmem active regions. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: Show more detailed information about memoryMichal Simek2012-03-23
| | | | | | | | | | | | | | Microblaze MMU is similar to ppc that's why ppc layout was reused. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: Introduce fixmapMichal Simek2012-03-23
| | | | | | | | | | | | Fixmap will be used for highmem support. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: mm: Fix lowmem max memory size limitsMichal Simek2012-03-23
| | | | | | | | | | | | | | | | | | | | Use CONFIG_LOWMEM_SIZE if system has larger ram size. For system with larger ram size, enable HIGMEM support. Also setup limitation for memblock and use memblock allocation in lowmem region. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: mm: Use ZONE_DMA instead of ZONE_NORMALMichal Simek2012-03-23
| | | | | | | | | | | | We should use ZONE_DMA because all address space is dma-able. Signed-off-by: Michal Simek <monstr@monstr.eu>
* | microblaze: Use vsprintf extention %pf with builtin_return_addressJoe Perches2012-03-19
|/ | | | | | | | | | | Emit the function name not the address when possible. builtin_return_address() gives an address. When building a kernel with CONFIG_KALLSYMS, emit the actual function name not the address. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add export.h to arch/microblaze files as requiredPaul Gortmaker2011-10-31
| | | | | | For access to the EXPORT_SYMBOL variants and THIS_MODULE macros. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* microblaze: add missing CONFIG_ prefixesPaul Bolle2011-10-13
| | | | | | Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* mm: now that all old mmu_gather code is gone, remove the storagePeter Zijlstra2011-05-25
| | | | | | | | | | | | | | | | | | | | | | 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 Simek2011-03-09
| | | | | | | | | | | 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 Simek2011-03-09
| | | | | | | | | | | | 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 Simek2010-09-11
| | | | | | | | | | | | | | | | | 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 Molnar2010-08-31
|\ | | | | | | | | | | | | | | | | | | 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 Simek2010-08-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Simek2010-08-04
| | | | | | | | | | | | Both versions can use the same node to register NODE_DATA(0) Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove unused labelMichal Simek2010-08-04
| | | | | | | | | | | | | | | | | | | | | | 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 Herrenschmidt2010-08-04
| | | | | | | | | | 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 Herrenschmidt2010-08-04
|/ | | | | | memblock_region Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* lmb: rename to memblockYinghai Lu2010-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Simek2010-05-13
| | | | | | Export __strncpy_user, memory_size, ioremap_bot for modules. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix consistent-sync codeMichal Simek2010-05-06
| | | | | | PCI_DMA_FROMDEVICE should call invalidation not flushing. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix consistent codeMichal Simek2010-05-06
| | | | | | | | | | | | 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 Piggin2010-05-06
| | | | | | | | | | | | | 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 Simek2010-05-06
| | | | | | 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 Simek2010-05-06
| | | | | | | | | | | | | 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 Heo2010-04-04
|\
| * microblaze: Adding likely macrosMichal Simek2010-04-01
| | | | | | | | | | | | | | 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 Simek2010-04-01
| | | | | | | | | | | | | | 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 Simek2010-04-01
| | | | | | | | | | | | 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 Heo2010-03-30
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Simek2010-03-11
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
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