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| author | Todd Poynor <toddpoynor@google.com> | 2012-12-20 15:51:00 -0800 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2016-02-16 13:52:50 -0800 |
| commit | 1dc7486fd81019314463d5077d8b4d13c41f3b34 (patch) | |
| tree | a4e32612ce288ec368f1e84fba2c8569aef6b9a6 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | 583695f13bbcc33f356a3fe598c30b10bd0c5c48 (diff) | |
cpufreq: interactive: fix race on timer restart on governor start
Starting the governor, or restarting on a hotplugged-in CPU, can race
with the timer start in idle, triggering a BUG on timer already pending.
Start the timer before setting the enable flag, and use enable_sem to
protect the sequence (and ensure correct order of the update to the
enable flag). Delete any existing timer for safety.
Change-Id: Ife77cf9fe099e8fd8543224cbf148c6722c2ffb0
Reported-by: Francisco Franco <francisco.franco@cloudcar.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions