search:
-f struct-page.flags-mask
When searching kernel memory, crash walks through all identity
mapping space which includes all physical memory. Nowadays we
have machines that equipped with more than 256G memory, it takes
a long time to go through all pages, especially most of them
are used by user space programs (e.g. LRU pages). This option
allows us to skip pages with certain struct page flags.
-g
Allow us to skip whole compound pages instead of only skipping
head pages when using -f, because some flags are only set to
head pages which tails pages share same properties with their
head pages.
kmem:
-k
Verify compound page order. Useful when debugging memory leak
caused by freeing compound pages with wrong order.
-r
Only print used pages (i.e. the page count is not zero). Makes
the output smaller (and faster to grep/vim/emacs).
Yu Zhao (5):
memory: better compound page support
memory: struct page.flags based filter
memory: skip compound pages when using search filter
memory: display and verify compound page order
memory: kmem option to skip free pages
defs.h | 4 +
help.c | 24 +++-
memory.c | 418 ++++++++++++++++++++++++++++++++++++++++++++++++---------------
3 files changed, 345 insertions(+), 101 deletions(-)
--
2.2.0.rc0.207.ga3a616c
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