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* [PATCH] mm: tlb_finish_mmu forget rssHugh Dickins2005-10-295-66/+16
| | | | | | | | | | | | | | | | | | | | | | | | zap_pte_range has been counting the pages it frees in tlb->freed, then tlb_finish_mmu has used that to update the mm's rss. That got stranger when I added anon_rss, yet updated it by a different route; and stranger when rss and anon_rss became mm_counters with special access macros. And it would no longer be viable if we're relying on page_table_lock to stabilize the mm_counter, but calling tlb_finish_mmu outside that lock. Remove the mmu_gather's freed field, let tlb_finish_mmu stick to its own business, just decrement the rss mm_counter in zap_pte_range (yes, there was some point to batching the update, and a subsequent patch restores that). And forget the anal paranoia of first reading the counter to avoid going negative - if rss does go negative, just fix that bug. Remove the mmu_gather's flushes and avoided_flushes from arm and arm26: no use was being made of them. But arm26 alone was actually using the freed, in the way some others use need_flush: give it a need_flush. arm26 seems to prefer spaces to tabs here: respect that. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: tlb_is_full_mm was obscureHugh Dickins2005-10-295-33/+4
| | | | | | | | | | | | | | | | tlb_is_full_mm? What does that mean? The TLB is full? No, it means that the mm's last user has gone and the whole mm is being torn down. And it's an inline function because sparc64 uses a different (slightly better) "tlb_frozen" name for the flag others call "fullmm". And now the ptep_get_and_clear_full macro used in zap_pte_range refers directly to tlb->fullmm, which would be wrong for sparc64. Rather than correct that, I'd prefer to scrap tlb_is_full_mm altogether, and change sparc64 to just use the same poor name as everyone else - is that okay? Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: tlb_gather_mmu get_cpu_varHugh Dickins2005-10-295-13/+19
| | | | | | | | | | | | | tlb_gather_mmu dates from before kernel preemption was allowed, and uses smp_processor_id or __get_cpu_var to find its per-cpu mmu_gather. That works because it's currently only called after getting page_table_lock, which is not dropped until after the matching tlb_finish_mmu. But don't rely on that, it will soon change: now disable preemption internally by proper get_cpu_var in tlb_gather_mmu, put_cpu_var in tlb_finish_mmu. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: page fault handlers tidyupHugh Dickins2005-10-291-1/+3
| | | | | | | | | | | | | | | | | | | | | | Impose a little more consistency on the page fault handlers do_wp_page, do_swap_page, do_anonymous_page, do_no_page, do_file_page: why not pass their arguments in the same order, called the same names? break_cow is all very well, but what it did was inlined elsewhere: easier to compare if it's brought back into do_wp_page. do_file_page's fallback to do_no_page dates from a time when we were testing pte_file by using it wherever possible: currently it's peculiar to nonlinear vmas, so just check that. BUG_ON if not? Better not, it's probably page table corruption, so just show the pte: hmm, there's a pte_ERROR macro, let's use that for do_wp_page's invalid pfn too. Hah! Someone in the ppc64 world noticed pte_ERROR was unused so removed it: restored (and say "pud" not "pmd" in its pud_ERROR). Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: unlink_file_vma, remove_vmaHugh Dickins2005-10-291-0/+1
| | | | | | | | | | | | | | | | | | | | Divide remove_vm_struct into two parts: first anon_vma_unlink plus unlink_file_vma, to unlink the vma from the list and tree by which rmap or vmtruncate might find it; then remove_vma to close, fput and free. The intention here is to do the anon_vma_unlink and unlink_file_vma earlier, in free_pgtables before freeing any page tables: so we can be sure that any page tables traversed by rmap and vmtruncate are stable (and other, ordinary cases are stabilized by holding mmap_sem). This will be crucial to traversing pgd,pud,pmd without page_table_lock. But testing the split-out patch showed that lifting the page_table_lock is symbiotically necessary to make this change - the lock ordering is wrong to move those unlinks into free_pgtables while it's under ptlock. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: vm_stat_account unshackledHugh Dickins2005-10-291-14/+2
| | | | | | | | | | The original vm_stat_account has fallen into disuse, with only one user, and only one user of vm_stat_unaccount. It's easier to keep track if we convert them all to __vm_stat_account, then free it from its __shackles. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Convert mempolicies to nodemask_tAndi Kleen2005-10-291-2/+2
| | | | | | | | | | | The NUMA policy code predated nodemask_t so it used open coded bitmaps. Convert everything to nodemask_t. Big patch, but shouldn't have any actual behaviour changes (except I removed one unnecessary check against node_online_map and one unnecessary BUG_ON) Signed-off-by: "Andi Kleen" <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] add sem_is_read/write_locked()Rik Van Riel2005-10-2910-0/+50
| | | | | | | | | | Add sem_is_read/write_locked functions to the read/write semaphores, along the same lines of the *_is_locked spinlock functions. The swap token tuning patch uses sem_is_read_locked; sem_is_write_locked is added for completeness. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix alpha breakageIvan Kokshaysky2005-10-291-0/+2
| | | | | | | | barrier.h uses barrier() in non-SMP case. And doesn't include compiler.h. Cc: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vmalloc_nodeChristoph Lameter2005-10-291-1/+7
| | | | | | | | | | | | | | | This patch adds vmalloc_node(size, node) -> Allocate necessary memory on the specified node and get_vm_area_node(size, flags, node) and the other functions that it depends on. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-10-2927-87/+130
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| * [ARM] 3061/1: cleanup the XIP link address messNicolas Pitre2005-10-291-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre Since vmlinux.lds.S is preprocessed, we can use the defines already present in asm/memory.h (allowed by patch #3060) for the XIP kernel link address instead of relying on a duplicated Makefile hardcoded value, and also get rid of its dependency on awk to handle it at the same time. While at it let's clean XIP stuff even further and make things clearer in head.S with a nice code reduction. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3060/1: allow constants found in asm/memory.h to be used in asm codeNicolas Pitre2005-10-2922-34/+44
| | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre This patch allows for assorted type of cleanups by letting assembly code use the same set of defines for constant values and avoid duplicated definitions that might not always be in sync, or that might simply be confusing due to the different names for the same thing. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3022/1: Missing peripheral devices memory mapping definition for ↵Kenneth Tan2005-10-291-26/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IXP46X processor Patch from Kenneth Tan Defining IXP46X peripheral devices memory mapping definitions that have been missed out: o Peripheral virtual base address is being adjusted to allow more headroom to add extra peripheral device addresses o Peripheral size is being increased to address the above needs o Virtual address of expansion bus and PCI configuration register needs to be adjusted as new peripheral device memory space is overlapping with their virtual address space Signed-off-by: Kenneth Tan <chong.yin.tan@intel.com> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3053/1: introduce ixp2000_reg_wrb (ixp2000_reg_write plus readback)Lennert Buytenhek2005-10-291-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek Introduce ixp2000_reg_wrb, which is a variant of ixp2000_reg_write that does a readback from the target register, to make sure that the write has been flushed out of the write buffer. Unlike the previous (ineffective) readback in ixp2000_reg_write, this readback is followed by an instruction that depends on the value of the readback so that the CPU actually stalls until the readback has completed. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3051/1: turn ixp2000_reg_read into an inline functionLennert Buytenhek2005-10-291-1/+5
| | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek Turn ixp2000_reg_read into an inline function. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3050/1: remove ixp2000_reg_write erratum #66 workaroundLennert Buytenhek2005-10-291-29/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek The workaround that we do for avoiding triggering ixp2400 erratum #66 involves mapping I/O pages using XCB=101 instead of XCB=000 so that we prevent the I/O signal to the gasket from being asserted (which can cause data corruption.) But XCB=101 mappings are write-buffered while mappings using XCB=000 are not, which is why if we use XCB=101 mappings we do a readback for every CSR store in an attempt to make sure that the store has been pushed out of the xscale core and the gasket. Unfortunately, there are two issues with this: - we do a readback for every CSR store, which is wrong, because the register we are writing to might have unwanted side-effects on read, for example, in the case of the scratchpad ring enqueue/dequeue registers; and - the readback is totally ineffective in the way we currently do it, because we just issue a load but do not issue any instruction that depends on the return value of that load, so the xscale core does not wait for the load to complete before continuing. See this linux-arm-kernel mailing list post for further information: http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2005-September/031314.html This means that my ixp2400 boxes have been running for many months without a working readback in ixp2000_reg_write, without any apparent adverse effects. Two of them have been running for a week now with the actual readback deleted from ixp2000_reg_write, also without any apparent ill effects. So, because in its current form it does more harm than good, the readback in ixp2000_reg_write should simply be killed, as the patch below does. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Allow MTD device name to be passed via platform dataRussell King2005-10-291-0/+2
| | | | | | | | | | | | | | Allow SA1100 devices to pass the name of the flash device to the SA1100 map driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Fix buggy __phys_to_pfn / __pfn_to_physRussell King2005-10-291-2/+2
| | | | | | | | | | | | | | Macro arguments should _always_ be surrounded by parentheses when used to prevent unexpected problems with operator precedence. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Ensure machine information structures aren't optimised awayRussell King2005-10-291-0/+1
| | | | | | | | | | | | | | | | Since the machine information structures are now static, the compiler might optimise them away. Mark them with __attribute_used__ to prevent this occuring. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2005-10-29155-1353/+10016
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| * | BCM1480 HT supportAndrew Isaacson2005-10-291-0/+5
| | | | | | | | | | | | | | | | | | | | | PCI support code for PLX 7250 PCI-X tunnel on BCM91480B BigSur board. Signed-Off-By: Andy Isaacson <adi@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Support for BigSur board.Andrew Isaacson2005-10-292-0/+53
| | | | | | | | | | | | | | | Signed-Off-By: Andy Isaacson <adi@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Add support for SB1A CPU.Andrew Isaacson2005-10-292-2/+4
| | | | | | | | | | | | | | | Signed-Off-By: Andy Isaacson <adi@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Sibyte header cleanupAndrew Isaacson2005-10-2914-30/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Update sibyte headers to match Broadcom internal copies: - comment cleanup and updates - fix LittleSur part number to match the board silkscreen Signed-Off-By: Andy Isaacson <adi@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | BCM1480 headersAndrew Isaacson2005-10-2917-98/+3236
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add header files for BCM1480/1280/1455/1255 family of chips, and update sb1250 headers which are shared by BCM1480 family. Signed-Off-By: Andy Isaacson <adi@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> diff --git a/include/asm-mips/sibyte/bcm1480_int.h b/include/asm-mips/sibyte/bcm1480_int.h new file mode 100644
| * | Make UL what should be UL.Ralf Baechle2005-10-292-9/+9
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Don't print file name and line in die and die_if_kernel.Ralf Baechle2005-10-291-9/+7
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Define EOWNERDEAD and ENOTRECOVERABLE.Ralf Baechle2005-10-291-0/+4
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | More configcheck fixes.Ralf Baechle2005-10-293-3/+5
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | 2.6.14-rc1 updates for MIPS compat types.Ralf Baechle2005-10-291-6/+6
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Complete the fcntl.h cleanup.Ralf Baechle2005-10-291-10/+7
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Cleanup Sibyte Kconfig a bit further.Ralf Baechle2005-10-291-14/+0
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Fix weirdness in <asm/bug.h>Ralf Baechle2005-10-291-3/+2
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Fixup a few lose ends in explicit support for MIPS R1/R2.Ralf Baechle2005-10-296-38/+37
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Provide 64-bit address space definitions for the Sibyte SB1 CPU core.Ralf Baechle2005-10-291-0/+10
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Cleanup the mess in cpu_cache_init.Ralf Baechle2005-10-296-27/+40
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Use R4000 TLB routines for SB1 also.Ralf Baechle2005-10-291-2/+4
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Fix ARCH_KMALLOC_MINALIGN values on MIPSRalf Baechle2005-10-294-2/+34
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Support for MIPSsim, the cycle accurate MIPS simulator.Ralf Baechle2005-10-293-0/+140
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Revise MIPS 64-bit ptrace interfaceDaniel Jacobowitz2005-10-291-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | Change the N32 debugging ABI to something more sane, and add support for o32 and n32 debuggers to trace n64 programs. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Glue again after removal of BUILD_BUG().Ralf Baechle2005-10-291-25/+32
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | SMP on Malta needs to define ARCH_HAS_IRQ_PER_CPU since 2.6.14-rc1.Ralf Baechle2005-10-291-0/+14
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org> diff --git a/include/asm-mips/mach-mips/irq.h b/include/asm-mips/mach-mips/irq.h new file mode 100644
| * | Add SOCK_DCCP definition for MIPS also.Ralf Baechle2005-10-291-0/+1
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | The type of sum in csum_tcpudp_nofold is "unsigned int", so when we assignRalf Baechle2005-10-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | to it in an asm() block, and we're running on a system with 64-bit registers, it is vitally important that we sign extend it correctly before returning to C. Otherwise the stray high bits will be preserved into csum_fold, and on the SB-1 processor, 32-bit arithmetic on a non sign-extended register will yield surprising results. This caused incorrect checksums in some UDP packets for NFS root. The problem was mild when using a 10.0.1.x IP address, but severe when using 192.168.1.x. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Kernel gpio/2 routines that will be used by some drivers.Pete Popov2005-10-291-0/+20
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Updated pcmcia driver with pb1200 and db1200 support.Pete Popov2005-10-292-0/+18
| | | | | | | | | | | | | | | | | | Updated db1200_defconfig so pcmcia is enabled by default. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Reorder & reformat a bit.Ralf Baechle2005-10-291-15/+16
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | The values for SO_SNDBUFFORCE / SO_RCVBUFFORCE were already taken ...Ralf Baechle2005-10-291-2/+2
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | Futexes for MIPS, for the time being only the R10000_LLSC_WAR version.Ralf Baechle2005-10-291-0/+50
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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