diff options
| author | Petr Cermak <petrcermak@chromium.org> | 2015-02-20 10:00:26 +0000 |
|---|---|---|
| committer | Ruchi Kandoi <kandoiruchi@google.com> | 2015-04-13 23:20:56 +0000 |
| commit | 6daab3abbe37c5a81b87d36cfc6cbfc520867833 (patch) | |
| tree | bdcf68b56ee6f40fe43ce0c3d7cd719d3b4cf90e /include | |
| parent | fb9517c6467354d0da60499a53096949a38e7da0 (diff) | |
fs/proc/task_mmu.c: add user-space support for resetting mm->hiwater_rss (peak RSS)
Peak resident size of a process can be reset back to the process's
current rss value by writing "5" to /proc/pid/clear_refs. The driving
use-case for this would be getting the peak RSS value, which can be
retrieved from the VmHWM field in /proc/pid/status, per benchmark
iteration or test scenario.
Origin:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=695f055936938c674473ea071ca7359a863551e7
[akpm@linux-foundation.org: clarify behaviour in documentation]
Signed-off-by: Petr Cermak <petrcermak@chromium.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Primiano Tucci <primiano@chromium.org>
Cc: Petr Cermak <petrcermak@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: I6bc63fcd5f5cdcc1c92aeec8b5abc8e3108d92b1
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 41e1fda77cf7..18a4997dcde7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1351,6 +1351,11 @@ static inline void update_hiwater_vm(struct mm_struct *mm) mm->hiwater_vm = mm->total_vm; } +static inline void reset_mm_hiwater_rss(struct mm_struct *mm) +{ + mm->hiwater_rss = get_mm_rss(mm); +} + static inline void setmax_mm_hiwater_rss(unsigned long *maxrss, struct mm_struct *mm) { |