30a5b5367ef9d5c9055414e12ec2f02d9de2e70f - SHIFTPHONES/kernel/common

commit	30a5b5367ef9d5c9055414e12ec2f02d9de2e70f	[log] [tgz]
author	Dennis Zhou <dennisz@fb.com>	Mon Jun 19 19:28:31 2017 -0400
committer	Tejun Heo <tj@kernel.org>	Tue Jun 20 15:31:38 2017 -0400
tree	900c04966e2adae51b7f833dbedcd8cbe0f828bb
parent	8fa3ed8014ac792a4c76d585b5c0f68bd202ff6b [diff]

percpu: expose statistics about percpu memory via debugfs

There is limited visibility into the use of percpu memory leaving us
unable to reason about correctness of parameters and overall use of
percpu memory. These counters and statistics aim to help understand
basic statistics about percpu memory such as number of allocations over
the lifetime, allocation sizes, and fragmentation.

New Config: PERCPU_STATS

Signed-off-by: Dennis Zhou <dennisz@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

mm/Kconfig[diff]
mm/Makefile[diff]
mm/percpu-internal.h[diff]
mm/percpu-km.c[diff]
mm/percpu-stats.c[Added - diff]
mm/percpu-vm.c[diff]
mm/percpu.c[diff]

7 files changed

tree: 900c04966e2adae51b7f833dbedcd8cbe0f828bb