Naoya Horiguchi 46c77e2bb0 tools/vm/page-types.c: support KPF_SOFTDIRTY bit ...

Soft dirty bit allows us to track which pages are written since the last
clear_ref (by "echo 4 > /proc/pid/clear_refs".) This is useful for
userspace applications to know their memory footprints.

Note that the kernel exposes this flag via bit[55] of /proc/pid/pagemap,
and the semantics is not a default one (scheduled to be the default in the
near future.) However, it shifts to the new semantics at the first
clear_ref, and the users of soft dirty bit always do it before utilizing
the bit, so that's not a big deal.  Users must avoid relying on the bit in
page-types before the first clear_ref.

Signed-off-by: Naoya Horiguchi <[email protected]>
Cc: Wu Fengguang <[email protected]>
Cc: Pavel Emelyanov <[email protected]>
Cc: Cyrill Gorcunov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

2013-11-13 12:09:07 +09:00

..

.gitignore

tools/vm: add .gitignore to ignore built binaries

2013-02-05 20:38:46 +11:00

Makefile

tools/vm: Switch to liblk library

2013-03-15 13:06:01 -03:00

page-types.c

tools/vm/page-types.c: support KPF_SOFTDIRTY bit

2013-11-13 12:09:07 +09:00

slabinfo.c

mm: Fix signal SIGFPE in slabinfo.c.

2012-07-02 23:11:14 +03:00