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The dump zone information using the following two commands:
1. cat /proc/rk_zoneinfo/zoneinfo
2. cat /proc/rk_zoneinfo/zoneinfo > /data/data/1.txt
NOTICE: dumping zone information should only be done during debugging.
The dump zone information holds the spinlock of the zone, which can
impact the performance of the memory subsystem.
==== ZONE & PAGE INFO (with page order) ====
Zone: DMA32
managed_pages: 952984
spanned_pages: 1048064
present_pages: 978432
Order: 0 | nr_free: 5
Migrate type 0 => (empty)
Migrate type 1 => page: fffffffe000a3940 | PFN: 00010469 | phys_addr: 0x00028e5000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 0
Migrate type 1 => page: fffffffe0028d940 | PFN: 00041829 | phys_addr: 0x000a365000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 0
Migrate type 2 => (empty)
Migrate type 3 => page: fffffffe004085c0 | PFN: 00066071 | phys_addr: 0x0010217000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 0
Migrate type 3 => page: fffffffe004089c0 | PFN: 00066087 | phys_addr: 0x0010227000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 0
Migrate type 3 => page: fffffffe00408ac0 | PFN: 00066091 | phys_addr: 0x001022b000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 0
Migrate type 4 => (empty)
Migrate type 5 => (empty)
Order: 1 | nr_free: 65
Migrate type 0 => (empty)
Migrate type 1 => page: fffffffe000a3980 | PFN: 00010470 | phys_addr: 0x00028e6000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 1
Migrate type 1 => page: fffffffe0020d280 | PFN: 00033610 | phys_addr: 0x000834a000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 1
Migrate type 1 => page: fffffffe0028d980 | PFN: 00041830 | phys_addr: 0x000a366000 | flags: 0x0 | compound: 0 | node: 0 | zone: DMA32 | buddy_order: 1
Migrate type 2 => (empty)
Change-Id: If9227fefaa79d744ca6dde123bd50f033d30c39c
Signed-off-by: Simon Xue <xxm@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.