Eric Lee / smarc-ti-linux-kernel

04 Jul, 2006

1 commit

01 Jul, 2006

1 commit

  • 347ce434d   [PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter ... Browse Code »

    Currently a single atomic variable is used to establish the size of the page
    cache in the whole machine. The zoned VM counters have the same method of
    implementation as the nr_pagecache code but also allow the determination of
    the pagecache size per zone.

    Remove the special implementation for nr_pagecache and make it a zoned counter
    named NR_FILE_PAGES.

    Updates of the page cache counters are always performed with interrupts off.
    We can therefore use the __ variant here.

    Signed-off-by: Christoph Lameter
    Cc: Trond Myklebust
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

29 Jun, 2006

1 commit

01 Apr, 2006

1 commit

22 Mar, 2006

1 commit

  • b20a35035   [PATCH] page migration reorg ... Browse Code »

    Centralize the page migration functions in anticipation of additional
    tinkering. Creates a new file mm/migrate.c

    1. Extract buffer_migrate_page() from fs/buffer.c

    2. Extract central migration code from vmscan.c

    3. Extract some components from mempolicy.c

    4. Export pageout() and remove_from_swap() from vmscan.c

    5. Make it possible to configure NUMA systems without page migration
    and non-NUMA systems with page migration.

    I had to so some #ifdeffing in mempolicy.c that may need a cleanup.

    Signed-off-by: Christoph Lameter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

02 Feb, 2006

1 commit

  • e965f9630   [PATCH] Direct Migration V9: Avoid writeback / page_migrate() method ... Browse Code »

    Migrate a page with buffers without requiring writeback

    This introduces a new address space operation migratepage() that may be used
    by a filesystem to implement its own version of page migration.

    A version is provided that migrates buffers attached to pages. Some
    filesystems (ext2, ext3, xfs) are modified to utilize this feature.

    The swapper address space operation are modified so that a regular
    migrate_page() will occur for anonymous pages without writeback (migrate_pages
    forces every anonymous page to have a swap entry).

    Signed-off-by: Mike Kravetz
    Signed-off-by: Christoph Lameter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

09 Jan, 2006

1 commit

  • 1480a540c   [PATCH] SwapMig: add_to_swap() avoid atomic allocations ... Browse Code »

    Add gfp_mask to add_to_swap

    add_to_swap does allocations with GFP_ATOMIC in order not to interfere with
    swapping. During migration we may have use add_to_swap extensively which may
    lead to out of memory errors.

    This patch makes add_to_swap take a parameter that specifies the gfp mask.
    The page migration code can then make add_to_swap use GFP_KERNEL.

    Signed-off-by: Hirokazu Takahashi
    Signed-off-by: Dave Hansen
    Signed-off-by: Christoph Lameter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

07 Jan, 2006

1 commit

  • c484d4104   [PATCH] mm: free_pages_and_swap_cache opt ... Browse Code »

    Minor optimization (though it doesn't help in the PREEMPT case, severely
    constrained by small ZAP_BLOCK_SIZE). free_pages_and_swap_cache works in
    chunks of 16, calling release_pages which works in chunks of PAGEVEC_SIZE.
    But PAGEVEC_SIZE was dropped from 16 to 14 in 2.6.10, so we're now doing more
    spin_lock_irq'ing than necessary: use PAGEVEC_SIZE throughout.

    Signed-off-by: Hugh Dickins
    Signed-off-by: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     

07 Nov, 2005

1 commit

30 Oct, 2005

2 commits

  • b8072f099   [PATCH] mm: update comments to pte lock ... Browse Code »

    Updated several references to page_table_lock in common code comments.

    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     
  • 4c21e2f24   [PATCH] mm: split page table lock ... Browse Code »

    Christoph Lameter demonstrated very poor scalability on the SGI 512-way, with
    a many-threaded application which concurrently initializes different parts of
    a large anonymous area.

    This patch corrects that, by using a separate spinlock per page table page, to
    guard the page table entries in that page, instead of using the mm's single
    page_table_lock. (But even then, page_table_lock is still used to guard page
    table allocation, and anon_vma allocation.)

    In this implementation, the spinlock is tucked inside the struct page of the
    page table page: with a BUILD_BUG_ON in case it overflows - which it would in
    the case of 32-bit PA-RISC with spinlock debugging enabled.

    Splitting the lock is not quite for free: another cacheline access. Ideally,
    I suppose we would use split ptlock only for multi-threaded processes on
    multi-cpu machines; but deciding that dynamically would have its own costs.
    So for now enable it by config, at some number of cpus - since the Kconfig
    language doesn't support inequalities, let preprocessor compare that with
    NR_CPUS. But I don't think it's worth being user-configurable: for good
    testing of both split and unsplit configs, split now at 4 cpus, and perhaps
    change that to 8 later.

    There is a benefit even for singly threaded processes: kswapd can be attacking
    one part of the mm while another part is busy faulting.

    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     

09 Oct, 2005

1 commit

  • dd0fc66fb   [PATCH] gfp flags annotations - part 1 ... Browse Code »

    - added typedef unsigned int __nocast gfp_t;

    - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
    the same warnings as far as sparse is concerned, doesn't change
    generated code (from gcc point of view we replaced unsigned int with
    typedef) and documents what's going on far better.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

11 Sep, 2005

1 commit

05 Sep, 2005

1 commit

  • 3279ffd97   [PATCH] delete from_swap_cache BUG_ONs ... Browse Code »

    Three of the four BUG_ONs in delete_from_swap_cache are immediately
    repeated in __delete_from_swap_cache: delete those and add the one. But
    perhaps mm/ is altogether overprovisioned with historic BUGs?

    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     

01 May, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »
    212

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds