Changelog since V3
o Added Reviewed-bys
o Added comment on why pressure_threshold is what it is
o Make sure pressure threshold does not get over 125
o Call get_online_cpus and put_online_cpus as appropriate
The following two patches are in response to a bug report by Shaohua Li
where the amount of time spent in zone_nr_free_pages() is unacceptable
for large machines. All the background is in the first patches leader. The
second patch replaces two setter functions with one function that takes a
callback function as a parameter.
include/linux/mmzone.h | 10 ++------
include/linux/vmstat.h | 7 ++++++
mm/mmzone.c | 21 ------------------
mm/page_alloc.c | 35 ++++++++++++++++++++++++-------
mm/vmscan.c | 25 +++++++++++++--------
mm/vmstat.c | 54 +++++++++++++++++++++++++++++++++++++++++++++--
6 files changed, 103 insertions(+), 49 deletions(-)
Mel Gorman (2):
mm: page allocator: Adjust the per-cpu counter threshold when memory
is low
mm: vmstat: Use a single setter function and callback for adjusting
percpu thresholds
include/linux/mmzone.h | 10 ++------
include/linux/vmstat.h | 7 ++++++
mm/mmzone.c | 21 -------------------
mm/page_alloc.c | 35 ++++++++++++++++++++++++-------
mm/vmscan.c | 25 +++++++++++++---------
mm/vmstat.c | 52 +++++++++++++++++++++++++++++++++++++++++++++--
6 files changed, 101 insertions(+), 49 deletions(-)
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