Hi Yury, On Fri, Nov 24, 2017 at 3:30 PM, Yury Norov <yno...@caviumnetworks.com> wrote: > Below the updates proposed in this thread.
Thank you! > From 959700bd7e7f586171c15a4130a9888acac02daf Mon Sep 17 00:00:00 2001 > From: Yury Norov <yno...@caviumnetworks.com> > Date: Wed, 22 Nov 2017 17:21:40 +0300 > Subject: [PATCH] improve lib/test_find_bit > > As suggested in review comments: > * printk: align numbers using whitespaces instead of tabs; > * return error value from init() to avoid calling rmmod if testing again; > * use ktime_get instead of get_cycles as some arches don't support it; > * rename test_find_bit.c to find_bit_benchmark.c. > > The output in dmesg (on QEMU arm64): > [ 38.823430] Start testing find_bit() with random-filled bitmap > [ 38.845358] find_next_bit: 20138448 ns, 163968 iterations > [ 38.856217] find_next_zero_bit: 10615328 ns, 163713 iterations > [ 38.863564] find_last_bit: 7111888 ns, 163967 iterations > [ 40.944796] find_first_bit: 2081007216 ns, 163968 iterations > [ 40.944975] > [ 40.944975] Start testing find_bit() with sparse bitmap > [ 40.945268] find_next_bit: 73216 ns, 656 iterations > [ 40.967858] find_next_zero_bit: 22461008 ns, 327025 iterations > [ 40.968047] find_last_bit: 62320 ns, 656 iterations > [ 40.978060] find_first_bit: 9889360 ns, 656 iterations > > Signed-off-by: Yury Norov <yno...@caviumnetworks.com> Tested-by: Geert Uytterhoeven <ge...@linux-m68k.org> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds