lib/vdso: Mark do_hres() and do_coarse() as __always_inline
Performance numbers for Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz
(more clock_gettime() cycles - the better):
clock | before | after | diff
----------------------------------------------------------
monotonic |
153222105 |
166775025 | 8.8%
monotonic-coarse |
671557054 |
691513017 | 3.0%
monotonic-raw |
147116067 |
161057395 | 9.5%
boottime |
153446224 |
166962668 | 9.1%
The improvement for arm64 for monotonic and boottime is around 3.5%.
clock | before | after | diff
==================================================
monotonic
17326692 17951770 3.6%
monotonic-coarse
43624027 44215292 1.3%
monotonic-raw
17541809 17554932 0.1%
boottime
17334982 17954361 3.5%
[ tglx: Avoid the goto ]
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-3-dima@arista.com