Question: Takes about 2s in sched_clock_init() when kernel boots

From: Younger Liu
Date: Thu Oct 31 2013 - 01:29:29 EST

When I analyse boot time on ArmV7, I found that it takes
about 2s in sched_clock_init(), the log is as follow:
[ 0.000000] before:sched_clock_init.
[ 0.000000] start:sched_clock_init.
[ 2.100505] end :sched_clock_init.
[ 2.103983] before:calibrate_delay.

In my config, CONFIG_HAVE_UNSTABLE_SCHED_CLOCK does not config.

Are there any suggestions?

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