mm/page_owner: record task command name

The page_owner information currently includes the pid of the calling
task.  That is useful as long as the task is still running.  Otherwise,
the number is meaningless.  To have more information about the
allocating tasks that had exited by the time the page_owner information
is retrieved, we need to store the command name of the task.

Add a new comm field into page_owner structure to store the command name
and display it when the page_owner information is retrieved.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Waiman Long <[email protected]>
Acked-by: Rafael Aquini <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Ira Weiny <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Petr Mladek <[email protected]>
Cc: Rasmus Villemoes <[email protected]>
Cc: Roman Gushchin <[email protected]>
Cc: Sergey Senozhatsky <[email protected]>
Cc: Steven Rostedt (Google) <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions