tree 47f4fb5685ba52366c3ec777e10533575753c950
parent cee718a1c68eaaf7c3cc81be9a4c89fca1ea96ad
author Yabin Cui <yabinc@google.com> 1466624589 -0700
committer Yabin Cui <yabinc@google.com> 1466624589 -0700

Simpleperf: check if -f option for record command is in valid range.

Read /proc/sys/kernel/perf_event_max_sample_rate to get max
valid sample frequency.

Bug: 29574526
Change-Id: I269fefc87a7561bb15f41c3b4a494e7604e005fb
Test: Run `simpleperf record -f 10000000`, check the error message.