user/sven/linux.git/scripts/bloat-o-meter, branch v4.10.3

scripts/bloat-o-meter: compile .NUMBER regex

2016-12-13T02:55:06Z

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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/bloat-o-meter: don't use readlines()

2016-12-13T02:55:06Z

readlines() conses whole list before doing anything which is slower for big object files. Use per line iterator. Speed up is ~2% on "allyesconfig" type of kernel. $ perf stat -r 16 taskset -c 15 ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux >/dev/null ... Before: 7.247708646 seconds time elapsed ( +- 0.28% ) After: 7.091202853 seconds time elapsed ( +- 0.15% ) Link: http://lkml.kernel.org/r/20161119004143.GA1200@avx2 Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/bloat-o-meter: fix SIGPIPE

2016-11-11T16:12:37Z

Fix piping output to a program which quickly exits (read: head -n1) $ ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux | head -n1 add/remove: 0/0 grow/shrink: 9/60 up/down: 124/-305 (-181) close failed in file object destructor: sys.excepthook is missing lost sys.stderr Link: http://lkml.kernel.org/r/20161028204618.GA29923@avx2 Signed-off-by: Alexey Dobriyan Cc: Matt Mackall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/bloat-o-meter: fix percent on <1% changes

2016-07-26T23:19:19Z

Python divisions are integer divisions unless at least one parameter is a float. The current bloat-o-meter fails to print sub-percentage changes: Total: Before=10515408, After=10604060, chg 0.000000% Force float division by using one float and pretty the print to two significant decimals: Total: Before=10515408, After=10604060, chg +0.84% Link: http://lkml.kernel.org/r/1465980311-23814-1-git-send-email-riku.voipio@linaro.org Signed-off-by: Riku Voipio Reviewed-by: Josh Triplett Cc: Vineet Gupta Cc: Michal Marek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/bloat-o-meter: print percent change

2016-05-20T02:12:14Z

This adds an additional line of output (to reduce the chances of breaking any existing output parsers) which prints the total size before and after and the relative difference. add/remove: 39/0 grow/shrink: 12408/55 up/down: 362227/-1430 (360797) function old new delta ext4_fill_super 10556 12590 +2034 _fpadd_parts - 1186 +1186 ntfs_fill_super 5340 6164 +824 ... ... __divdf3 752 386 -366 unlzma 3682 3274 -408 Total: Before=5023101, After=5383898, chg 7.000000% ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Link: http://lkml.kernel.org/r/1463124110-30314-1-git-send-email-vgupta@synopsys.com Signed-off-by: Vineet Gupta Cc: Josh Triplett Cc: Michal Marek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/bloat-o-meter: fix python3 syntax error

2016-01-15T00:00:49Z

In Python3+ print is a function so the old syntax is not correct anymore: $ ./scripts/bloat-o-meter vmlinux.o vmlinux.o.old File "./scripts/bloat-o-meter", line 61 print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ ^ SyntaxError: invalid syntax Fix by calling print as a function. Tested on python 2.7.11, 3.5.1 Signed-off-by: Sergey Senozhatsky Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bloat-o-meter: Ignore syscall aliases SyS_ and compat_SyS_

2014-08-23T20:08:48Z

This avoids double-counting size changes in syscall implementations. Signed-off-by: Josh Triplett

scripts/bloat-o-meter: use .startswith rather than fragile slicing

2013-11-07T09:47:13Z

str.startswith has existed since at least Python 2.0, in 2000; use it rather than a fragile comparison against an initial slice of a string, which requires hard-coding the length of the string to compare against. Signed-off-by: Josh Triplett Signed-off-by: Andrew Morton Signed-off-by: Michal Marek

scripts/bloat-o-meter: ignore changes in the size of linux_banner

2013-11-07T09:46:54Z

linux_banner can change size due to changes in the compiler, build number, or the user@host the system was compiled on; ignore size changes in linux_banner entirely. Signed-off-by: Josh Triplett Signed-off-by: Andrew Morton Signed-off-by: Michal Marek

kbuild, bloat-o-meter: fix static detection

2013-11-06T21:25:59Z

Disable static detection: the static currently drops a lot of useful information including clones generated by gcc. Drop this. The statics will appear now without static. prefix. But remove the LTO .NUMBER postfixes that look ugly Signed-off-by: Andi Kleen Signed-off-by: Michal Marek