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| author | Vasily Gorbik <gor@linux.ibm.com> | 2017-11-17 17:59:53 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-10-09 11:21:30 +0200 |
| commit | e006222b57508d58b55d36c6ae6663f5729dad2b (patch) | |
| tree | c1f3f2c83a80ea41fa9cb40ac77bb53ca07961cb /mm/khugepaged.c | |
| parent | 5dff03813f46f267bc1ecb334901e916346692ff (diff) | |
s390/mm: optimize debugfs ptdump kasan zero page walking
Kasan zero p4d/pud/pmd/pte are always filled in with corresponding
kasan zero entries. Walking kasan zero page backed area is time
consuming and unnecessary. When kasan zero p4d/pud/pmd is encountered,
it eventually points to the kasan zero page always with the same
attributes and nothing but it, therefore zero p4d/pud/pmd could
be jumped over.
Also adds a space between address range and pages number to separate
them from each other when pages number is huge.
0x0018000000000000-0x0018000010000000 256M PMD RW X
0x0018000010000000-0x001bfffff0000000 1073741312M PTE RO X
0x001bfffff0000000-0x001bfffff0001000 4K PTE RW X
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'mm/khugepaged.c')
0 files changed, 0 insertions, 0 deletions