Hi,
this is rebased on top of next-20160818. Joe has pointed out that
meminfo is using a similar trick so I have extracted guts of what we
have already and made it more generic to be usable for smaps as well
(patch 1). The second patch then replaces seq_printf with seq_write
and show_val_kb which should have smaller overhead and my measuring (in
kvm) shows quite a nice improvements. I hope kvm is not playing tricks
on me but I didn't get to test on a real HW.
Michal Hocko (2):
proc, meminfo: abstract show_val_kb
proc, smaps: reduce printing overhead
fs/proc/internal.h | 17 ++++++++++
fs/proc/meminfo.c | 93 ++++++++++++++++++++++++++----------------------------
fs/proc/task_mmu.c | 58 +++++++++++-----------------------
3 files changed, 81 insertions(+), 87 deletions(-)
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