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| * sparc: Kill mmu_{un,}lockarea().David S. Miller2012-05-13
| | | | | | | | | | | | | | | | | | | | | | | | These were used on sun4c during floppy data transfers since on that chip we had to lock the cpu mappings into the TLB because we cannot take a TLB miss during the assembler floppy interrupt handler that does the data transfer. That is no longer necessary since we've removed sun4c support, thus this stuff can disappear completely. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup update_mmu_cache().David S. Miller2012-05-13
| | | | | | | | | | | | | | | | | | | | | | The magic Swift SRMMU code in question has not been enabled for something on the order of a decade, and it as well as it's comment is there in the history in case we ever need it again. Therefore all implementations are NOPs and we can kill this stuff off. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Kill btfixup for xchg()'s 'swap' instruction.David S. Miller2012-05-13
| | | | | | | | | | | | | | | | | | | | We always have this instruction available, so no need to use btfixup for it any more. This also eradicates the whole of atomic_32.S and thus the __atomic_begin and __atomic_end symbols completely. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop btfixup in page_32.hSam Ravnborg2012-05-13
| | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop btfixup in mmu_context_32.hSam Ravnborg2012-05-13
| | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop btfixup in pgtable_32.hSam Ravnborg2012-05-13
| | | | | | | | | | | | | | Only one function left using btfixup. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop btfixup in pgalloc_32.hSam Ravnborg2012-05-13
| | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup more PTE constants and PTE ops.David S. Miller2012-05-12
| | | | | | | | | | | | | | pte_{filei,wrprotecti,mkcleani,mkoldi} pte_{mkwrite,mkdirty,mkyoung} Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup pte_{write,dirty,young}iDavid S. Miller2012-05-12
| | | | | | | | | | | | | | | | And we can certainly get rid of the const function attributes, there is no way that's needed any longer and no other arch uses this kind of annotation here. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup set_pte, pte_present, mk_pte{_phys,_io}().David S. Miller2012-05-12
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop loadmmuSam Ravnborg2012-05-12
| | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup pmd_{bad,present}().David S. Miller2012-05-12
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup pgd_{none,bad,present}.David S. Miller2012-05-12
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup PAGE_{NONE,COPY,READONLY,SHARED,KERNEL}.David S. Miller2012-05-12
| | | | | | | | | | | | | | | | | | That lets us also get rid of the run-time initialization of protection_map[] and all the ugly module workarounds for PAGE_KERNEL and PAGE_SHARED to deal with the fact that we can't do btfixups for modular code. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup pmd_page and pte_pfn.David S. Miller2012-05-12
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup {pte,pmd,pgd}_clear().David S. Miller2012-05-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also we can remove BTFIXUPCALL_SWAPO0G0 as that is no longer used. This was rather amusing, we were setting the btfixup vectors based upon cpu type but all to the same exact generic srmmu routines. Furthermore, we were inconsistently marking the fixup as either BTFIXUPCALL_SWAPO0G0 or BTFIXUPCALL_NORM. What a mess, glad we could untangle this stuff. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Un-btfixup PGDIR_{SHIFT,SIZE,MASK} {USER_,}PTRS_PER_{PGD,PMD}David S. Miller2012-05-12
| | | | | | | | | | | | Only one set of values exist, the SRMMU ones. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop btfixup for check_pgt_cacheSam Ravnborg2012-05-12
| | | | | | | | | | | | | | | | | | It is a noop for srmmu - so use a define as sparc64 does. And drop all sparc callers - no need to confuse our-self be calling a noop function. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop btfixup for switch_mmSam Ravnborg2012-05-12
| | | | | | | | | | | | | | | | | | This revealed that the implementation of switch_mm had a bogus extra argument. No harm as said argument was never used - but confusing. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Trivial removal of sun4c references in comments.David S. Miller2012-05-12
| | | | | | | | | | | | | | | | I left some around, like the ones in the openprom headers, since we need to think about which pieces of those datastructures and code we can completely toss now. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Remove sparc_lvl15_nmi().David S. Miller2012-05-12
| | | | | | | | | | | | No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: Kill asm/vac-ops.hDavid S. Miller2012-05-12
| | | | | | | | | | | | All sun4/sun4c stuff and unused. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: use inline versions of pgprot_noncached, pte_to_pgoff and pgoff_to_pteSam Ravnborg2012-05-11
| | | | | | | | | | | | | | | | We no longer have different versions of these so use a few simple static inline functions. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop btfixup for alloc_thread_info_node/free_thread_infoSam Ravnborg2012-05-11
| | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop sun4c user stack checking routineSam Ravnborg2012-05-11
| | | | | | | | | | | | | | | | With this we no longer do any run-time patchings of traps. So drop the function + macro to support this. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop sun4c stack checking routineSam Ravnborg2012-05-11
| | | | | | | | | | | | | | And drop run-time patching too. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop sun4c window overflow stack checking routineSam Ravnborg2012-05-11
| | | | | | | | | | | | | | Also drop run-time patching for srmmu Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop sun4c specific stack validationSam Ravnborg2012-05-11
| | | | | | | | | | | | | | This allows us to kill run-time patching for this function too Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: remove all uses of ARCH_SUN4CSam Ravnborg2012-05-11
| | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: remove sun4c trapsSam Ravnborg2012-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | We used to runtime patch the trap table for srmmu. With the removal of sun4c support this is no longer required. With the sun4c trap removed we can remove all the referenced trap handling which is sun4c specific. This also allows us to get rid of the nosun4c.c file that contained only dummy functions/data. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: remove calls to sun4c dummy mm inits functionsSam Ravnborg2012-05-11
| | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc32: drop sun4c supportSam Ravnborg2012-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Machines with sun4c support are very rare these days, and noone is using them for any practical purposes. The sun4c support has been know broken for quite some time too. So rather than trying to keep it up-to-date, lets get rid of it. This allows us to do some very welcome cleanup of sparc32 support. Updated the former sun4c specifc nmi (which was also used for sun4m UP) to be a generic UP NMI. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc: fix build fail in mm/init_64.c when NEED_MULTIPLE_NODES is offPaul Gortmaker2012-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 625d693e9784f988371e69c2b41a2172c0be6c11 (linux-next) "sparc64: Convert over to NO_BOOTMEM." causes the following compile failure for sparc64 allnoconfig: arch/sparc/mm/init_64.c:822:16: error: unused variable 'paddr' arch/sparc/mm/init_64.c:1759:7: error: unused variable 'node' arch/sparc/mm/init_64.c:809:12: error: 'memblock_nid_range' defined but not used The paddr decl can easily be shuffled within the ifdef. The memblock_nid_range is just a stub function for when NEED_MULTIPLE_NODES is off, but the only caller is within a NEED_MULTIPLE_NODES enabled section, so we can simply delete it. The unused "node" is slightly more interesting. In the case of "# CONFIG_NEED_MULTIPLE_NODES is not set" we no longer get the definition of: #define NODE_DATA(nid) (node_data[nid]) from arch/sparc/include/asm/mmzone.h - but instead we get: #define NODE_DATA(nid) (&contig_page_data) from include/linux/mmzone.h -- and since the arg is ignored, the thing really is unused. Rather than put in a confusing looking __maybe_unused, simply splitting the declaration from the assignment seemed to me to be the least offensive. Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Do not set max_mapnr.David S. Miller2012-04-27
| | | | | | | | | | | | | | | | | | There is no need, since nothing relevant to sparc64 makes use of this value. Noticed by Sam Ravnborg. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Use node local allocations for IRQ stacks.David S. Miller2012-04-26
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Convert over to NO_BOOTMEM.David S. Miller2012-04-26
| | | | | | | | | | | | With help from Sam Ravnborg. Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcDavid S. Miller2012-04-13
| |\
| * | sparc: Use vsprintf extention %pf with builtin_return_addressJoe Perches2012-02-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: David S. Miller <davem@davemloft.net>
* | | sparc64: Do not clobber %g2 in xcall_fetch_glob_regs().David S. Miller2012-05-10
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | %g2 is meant to hold the CPUID number throughout this routine, since at the very beginning, and at the very end, we use %g2 to calculate indexes into per-cpu arrays. However we erroneously clobber it in order to hold the %cwp register value mid-stream. Fix this code to use %g3 for the %cwp read and related calulcations instead. Reported-by: Meelis Roos <mroos@linux.ee> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc/mm/fault_32.c: Port OOM changes to do_sparc_faultKautuk Consul2012-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 32-bit sparc. Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc/mm/fault_64.c: Port OOM changes to do_sparc64_faultKautuk Consul2012-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 64-bit sparc. Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Move all declarations of free_initmem() to linux/mm.hDavid Howells2012-03-28
| | | | | | | | | | | | | | | | | | | | | | | | | | Move all declarations of free_initmem() to linux/mm.h so that there's only one and it's used by everything. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-c6x-dev@linux-c6x.org cc: microblaze-uclinux@itee.uq.edu.au cc: linux-sh@vger.kernel.org cc: sparclinux@vger.kernel.org cc: x86@kernel.org cc: linux-mm@kvack.org
* | Disintegrate asm/system.h for SparcDavid Howells2012-03-28
| | | | | | | | | | | | | | Disintegrate asm/system.h for Sparc. Signed-off-by: David Howells <dhowells@redhat.com> cc: sparclinux@vger.kernel.org
* | highmem: kill all __kmap_atomic()Cong Wang2012-03-20
|/ | | | | | | [swarren@nvidia.com: highmem: Fix ARM build break due to __kmap_atomic rename] Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Cong Wang <amwang@redhat.com>
* Merge branch 'memblock-kill-early_node_map' of ↵Ingo Molnar2011-12-20
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into core/memblock
| * sparc: Use HAVE_MEMBLOCK_NODE_MAPTejun Heo2011-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | sparc doesn't access early_node_map[] directly and enabling HAVE_MEMBLOCK_NODE_MAP is trivial - replacing add_active_range() calls with memblock_set_node() and selecting HAVE_MEMBLOCK_NODE_MAP is enough. -v2: Use select in Kconfig instead as suggested by Sam Ravnborg. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: "David S. Miller" <davem@davemloft.net> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: sparclinux@vger.kernel.org
| * memblock: s/memblock_analyze()/memblock_allow_resize()/ and update usersTejun Heo2011-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only function of memblock_analyze() is now allowing resize of memblock region arrays. Rename it to memblock_allow_resize() and update its users. * The following users remain the same other than renaming. arm/mm/init.c::arm_memblock_init() microblaze/kernel/prom.c::early_init_devtree() powerpc/kernel/prom.c::early_init_devtree() openrisc/kernel/prom.c::early_init_devtree() sh/mm/init.c::paging_init() sparc/mm/init_64.c::paging_init() unicore32/mm/init.c::uc32_memblock_init() * In the following users, analyze was used to update total size which is no longer necessary. powerpc/kernel/machine_kexec.c::reserve_crashkernel() powerpc/kernel/prom.c::early_init_devtree() powerpc/mm/init_32.c::MMU_init() powerpc/mm/tlb_nohash.c::__early_init_mmu() powerpc/platforms/ps3/mm.c::ps3_mm_add_memory() powerpc/platforms/embedded6xx/wii.c::wii_memory_fixups() sh/kernel/machine_kexec.c::reserve_crashkernel() * x86/kernel/e820.c::memblock_x86_fill() was directly setting memblock_can_resize before populating memblock and calling analyze afterwards. Call memblock_allow_resize() before start populating. memblock_can_resize is now static inside memblock.c. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: "H. Peter Anvin" <hpa@zytor.com>
| * memblock: Kill memblock_init()Tejun Heo2011-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | memblock_init() initializes arrays for regions and memblock itself; however, all these can be done with struct initializers and memblock_init() can be removed. This patch kills memblock_init() and initializes memblock with struct initializer. The only difference is that the first dummy entries don't have .nid set to MAX_NUMNODES initially. This doesn't cause any behavior difference. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: "H. Peter Anvin" <hpa@zytor.com>
| * Merge branch 'master' into x86/memblockTejun Heo2011-11-28
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts & resolutions: * arch/x86/xen/setup.c dc91c728fd "xen: allow extra memory to be in multiple regions" 24aa07882b "memblock, x86: Replace memblock_x86_reserve/free..." conflicted on xen_add_extra_mem() updates. The resolution is trivial as the latter just want to replace memblock_x86_reserve_range() with memblock_reserve(). * drivers/pci/intel-iommu.c 166e9278a3f "x86/ia64: intel-iommu: move to drivers/iommu/" 5dfe8660a3d "bootmem: Replace work_with_active_regions() with..." conflicted as the former moved the file under drivers/iommu/. Resolved by applying the chnages from the latter on the moved file. * mm/Kconfig 6661672053a "memblock: add NO_BOOTMEM config symbol" c378ddd53f9 "memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option" conflicted trivially. Both added config options. Just letting both add their own options resolves the conflict. * mm/memblock.c d1f0ece6cdc "mm/memblock.c: small function definition fixes" ed7b56a799c "memblock: Remove memblock_memory_can_coalesce()" confliected. The former updates function removed by the latter. Resolution is trivial. Signed-off-by: Tejun Heo <tj@kernel.org>
| * | memblock: Don't allow archs to override memblock_nid_range()Tejun Heo2011-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | memblock_nid_range() is used to implement memblock_[try_]alloc_nid(). The generic version determines the range by walking early_node_map with for_each_mem_pfn_range(). The generic version is defined __weak to allow arch override. Currently, only sparc overrides it; however, with the previous update to the generic implementation, there isn't much to be gained with arch override. Sparc would behave exactly the same with the generic implementation. This patch disallows arch override for memblock_nid_range() and make both generic and sparc versions static. sparc is only compile tested. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/1310460395-30913-6-git-send-email-tj@kernel.org Cc: "David S. Miller" <davem@davemloft.net> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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