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Author SHA1 Message Date
Konstantin Khlebnikov 17627157cd kernfs: handle null pointers while printing node name and path 
Null kernfs nodes could be found at cgroups during construction.
It seems safer to handle these null pointers right in kernfs in
the same way as printf prints "(null)" for null pointer string.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-02-10 16:02:26 +01:00
Tejun Heo ed1777de25 cgroup: add tracepoints for basic operations 
Debugging what goes wrong with cgroup setup can get hairy.  Add
tracepoints for cgroup hierarchy mount, cgroup creation/destruction
and task migration operations for better visibility.

Signed-off-by: Tejun Heo <tj@kernel.org>
 2016-08-10 11:23:44 -04:00