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authorPetr Cermak <petrcermak@chromium.org>2015-02-13 00:01:00 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-13 03:54:12 +0100
commit695f055936938c674473ea071ca7359a863551e7 (patch)
tree8975abce255f8d638fa1291beb62803e2d611004 /init
parentarch/frv/mm/extable.c: remove unused function (diff)
downloadlinux-695f055936938c674473ea071ca7359a863551e7.tar.xz
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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. [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>
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