scripts/bloat-o-meter: compile .NUMBER regex
authorAlexey Dobriyan <adobriyan@gmail.com>
Tue, 13 Dec 2016 00:40:48 +0000 (16:40 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 13 Dec 2016 02:55:06 +0000 (18:55 -0800)
commit0d7bbb43641c35390378e951785f2351bc36650a
tree5573ad829c14a7532e783b643d1e11a810ad42e2
parent3af06fd96aae18561830745880ca6e289053edae
scripts/bloat-o-meter: compile .NUMBER regex

Every often used regex is better be compiled in Python.

Speedup is about ~9.8% (whee!)

    $ perf stat -r 16 taskset -c 15 ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux >/dev/null
    7.091202853 seconds time elapsed                         ( +-  0.15% )

    +re.compile
    6.397564973 seconds time elapsed                         ( +-  0.34% )

Link: http://lkml.kernel.org/r/20161119004417.GB1200@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
scripts/bloat-o-meter