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| author | Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com> | 2018-11-15 04:26:33 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-17 07:39:34 +0300 |
| commit | 09fd4860ea258d9666f852c213875e6bcdb1204e (patch) | |
| tree | 6d76770738c3a02fbb7b9e4e1716887348abf383 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 3fcbdaee3b5c4a7f8ea4c7c11fecc009d2a1e7e4 (diff) | |
| download | linux-09fd4860ea258d9666f852c213875e6bcdb1204e.tar.xz | |
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 <jesus.s.palencia@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions