diff options
| author | Jesus Sanchez-Palencia <[email protected]> | 2018-11-14 17:26:33 -0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-11-16 20:39:34 -0800 |
| commit | 09fd4860ea258d9666f852c213875e6bcdb1204e (patch) | |
| tree | 6d76770738c3a02fbb7b9e4e1716887348abf383 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 3fcbdaee3b5c4a7f8ea4c7c11fecc009d2a1e7e4 (diff) | |
etf: Use cached rb_root
ETF's peek() operation is heavily used so use an rb_root_cached instead
and leverage rb_first_cached() which will run in O(1) instead of
O(log n).
Even if on 'timesortedlist_clear()' we could be using rb_erase(), we
choose to use rb_erase_cached(), because if in the future we allow
runtime changes to ETF parameters, and need to do a '_clear()', this
might cause some hard to debug issues.
Signed-off-by: Jesus Sanchez-Palencia <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions