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author | Srikar Dronamraju <srikar@linux.vnet.ibm.com> | 2015-06-25 22:51:43 +0530 |
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committer | Ingo Molnar <mingo@kernel.org> | 2015-07-04 10:04:33 +0200 |
commit | 397f2378f136128623fc237746157aa2564d1082 (patch) | |
tree | 8a7f246250fd2733a98192c1b0ca6cf66e276e6b /fs/proc | |
parent | e3d24d0a6048a826de5562d75dedb664d3a2a1b2 (diff) | |
download | linux-397f2378f136128623fc237746157aa2564d1082.tar.bz2 |
sched/numa: Fix numa balancing stats in /proc/pid/sched
Commit 44dba3d5d6a1 ("sched: Refactor task_struct to use
numa_faults instead of numa_* pointers") modified the way
tsk->numa_faults stats are accounted.
However that commit never touched show_numa_stats() that is displayed
in /proc/pid/sched and thus the numbers displayed in /proc/pid/sched
don't match the actual numbers.
Fix it by making sure that /proc/pid/sched reflects the task
fault numbers. Also add group fault stats too.
Also couple of more modifications are added here:
1. Format changes:
- Previously we would list two entries per node, one for private
and one for shared. Also the home node info was listed in each entry.
- Now preferred node, total_faults and current node are
displayed separately.
- Now there is one entry per node, that lists private,shared task and
group faults.
2. Unit changes:
- p->numa_pages_migrated was getting reset after every read of
/proc/pid/sched. It's more useful to have absolute numbers since
differential migrations between two accesses can be more easily
calculated.
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Iulia Manda <iulia.manda21@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435252903-1081-4-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/proc')
0 files changed, 0 insertions, 0 deletions