Provide histogram of stack sizes for the exited threads: Example outputs: Intel: $ grep kstack /proc/vmstat kstack_1k 3 kstack_2k 188 kstack_4k 11391 kstack_8k 243 kstack_16k 0 ARM with 64K page_size: $ grep kstack /proc/vmstat kstack_1k 1 kstack_2k 340 kstack_4k 25212 kstack_8k 1659 kstack_16k 0 kstack_32k 0 kstack_64k 0 Changelog: v5: Uninlined stack_not_used() and kstack_histogram() per mailing list discussion Use count_vm_event() instead of this_cpu_inc() Increase memcg_event limit from s8_max to u8_max. Pasha Tatashin (2): vmstat: Kernel stack usage histogram task_stack: uninline stack_not_used Shakeel Butt (1): memcg: increase the valid index range for memcg stats include/linux/sched/task_stack.h | 18 ++-------- include/linux/vm_event_item.h | 24 ++++++++++++++ kernel/exit.c | 57 ++++++++++++++++++++++++++++++++ kernel/sched/core.c | 4 +-- mm/memcontrol.c | 50 ++++++++++++++++------------ mm/vmstat.c | 24 ++++++++++++++ 6 files changed, 137 insertions(+), 40 deletions(-) -- 2.45.2.1089.g2a221341d9-goog
