[PATCH v2 0/3] arm64: mm: Enhance Virtual kernel memory layout
Kefeng Wang
wangkefeng.wang at huawei.com
Sun Apr 17 20:09:45 PDT 2016
This is a micro enhance for Virtual kernel memory layout. Show bss info,
add restriction for modules and PCI I/O printing, and make each line with
single pr_cont().
With this patchset,
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] modules : 0xffffff8000000000 - 0xffffff8008000000 ( 128 MB)
[ 0.000000] vmalloc : 0xffffff8008000000 - 0xffffffbdbfff0000 ( 246 GB)
[ 0.000000] .text : 0xffffff8008080000 - 0xffffff8008755000 ( 6996 KB)
[ 0.000000] .rodata : 0xffffff8008755000 - 0xffffff8008a3d000 ( 2976 KB)
[ 0.000000] .init : 0xffffff8008a3d000 - 0xffffff8008b09000 ( 816 KB)
[ 0.000000] .data : 0xffffff8008b09000 - 0xffffff8008ba6800 ( 630 KB)
[ 0.000000] .bss : 0xffffff8008ba6800 - 0xffffff8008be3738 ( 244 KB)
[ 0.000000] vmemmap : 0xffffffbdc0000000 - 0xffffffbfc0000000 ( 8 GB maximum)
[ 0.000000] 0xffffffbdc0000000 - 0xffffffbdc8000000 ( 128 MB actual)
[ 0.000000] fixed : 0xffffffbffe7fd000 - 0xffffffbffec00000 ( 4108 KB)
[ 0.000000] PCI I/O : 0xffffffbffee00000 - 0xffffffbfffe00000 ( 16 MB)
[ 0.000000] memory : 0xffffffc000000000 - 0xffffffc200000000 ( 8192 MB)
Before,
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] modules : 0xffffff8000000000 - 0xffffff8008000000 ( 128 MB)
[ 0.000000] vmalloc : 0xffffff8008000000 - 0xffffffbdbfff0000 ( 246 GB)
[ 0.000000] .text : 0xffffff8008080000 - 0xffffff8008753000 ( 6988 KB)
.rodata : 0xffffff8008753000 - 0xffffff8008a3a000 ( 2972 KB)
.init : 0xffffff8008a3a000 - 0xffffff8008b06000 ( 816 KB)
.data : 0xffffff8008b06000 - 0xffffff8008ba2400 ( 625 KB)
[ 0.000000] vmemmap : 0xffffffbdc0000000 - 0xffffffbfc0000000 ( 8 GB maximum)
0xffffffbdc0000000 - 0xffffffbdc8000000 ( 128 MB actual)
[ 0.000000] fixed : 0xffffffbffe7fd000 - 0xffffffbffec00000 ( 4108 KB)
[ 0.000000] PCI I/O : 0xffffffbffee00000 - 0xffffffbfffe00000 ( 16 MB)
[ 0.000000] memory : 0xffffffc000000000 - 0xffffffc200000000 ( 8192 MB)
Changes since v1:
- Drop vector info and spilt the patch, suggested by James Morse.
Kefeng Wang (3):
arm64: mm: make pr_cont() per line in Virtual kernel memory layout
arm64: mm: Show bss segment in kernel memory layout
arm64: mm: Restrictive printing for modules and PCI I/O in memory
layout
arch/arm64/mm/init.c | 27 ++++++++++++++++-----------
1 file changed, 16 insertions(+), 11 deletions(-)
--
2.6.0.GIT
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