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| author | Thomas Gleixner <tglx@linutronix.de> | 2008-02-09 23:24:09 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-02-09 23:24:09 +0100 |
| commit | 76ebd0548df6ee48586e9b80d8fc2f58aa5fb51c (patch) | |
| tree | 10af366ea643126913cd588aa46741961be1d7cb /scripts/patch-kernel | |
| parent | x86: DEBUG_PAGEALLOC: enable after mem_init() (diff) | |
| download | linux-76ebd0548df6ee48586e9b80d8fc2f58aa5fb51c.tar.gz linux-76ebd0548df6ee48586e9b80d8fc2f58aa5fb51c.zip | |
x86: introduce page pool in cpa
DEBUG_PAGEALLOC was not possible on 64-bit due to its early-bootup
hardcoded reliance on PSE pages, and the unrobustness of the runtime
splitup of large pages. The splitup ended in recursive calls to
alloc_pages() when a page for a pte split was requested.
Avoid the recursion with a preallocated page pool, which is used to
split up large mappings and gets refilled in the return path of
kernel_map_pages after the split has been done. The size of the page
pool is adjusted to the available memory.
This part just implements the page pool and the initialization w/o
using it yet.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions