diff options
| author | Davidlohr Bueso <[email protected]> | 2017-09-08 16:15:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-09-08 18:26:49 -0700 |
| commit | 410bd5ecb276593e7ec1552014083215d4a43c3a (patch) | |
| tree | 3d507f3ba123be043d8a4e7582c8a48a0f71cb07 /tools/perf/scripts/python/stackcollapse.py | |
| parent | f2686bb48618718c7141f117e2d607594e959bfc (diff) | |
procfs: use faster rb_first_cached()
... such that we can avoid the tree walks to get the node with the
smallest key. Semantically the same, as the previously used rb_first(),
but O(1). The main overhead is the extra footprint for the cached rb_node
pointer, which should not matter for procfs.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Davidlohr Bueso <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions