diff options
author | Dirk Brandewie <[email protected]> | 2014-05-08 12:57:24 -0700 |
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committer | Rafael J. Wysocki <[email protected]> | 2014-05-13 17:39:13 +0200 |
commit | d40a63c45b506b0681918d7c62a15cc9d48c8681 (patch) | |
tree | b0a0023a71d72947c0d691627010313580974683 /tools/perf/scripts/python | |
parent | 21855ff5bcbdd075e1c99772827a84912ab083dd (diff) |
intel_pstate: remove setting P state to MAX on init
Setting the P state of the core to max at init time is a hold over
from early implementation of intel_pstate where intel_pstate disabled
cpufreq and loaded VERY early in the boot sequence. This was to
ensure that intel_pstate did not affect boot time. This in not needed
now that intel_pstate is a cpufreq driver.
Removing this covers the case where a CPU has gone through a manual
CPU offline/online cycle and the P state is set to MAX on init and the
CPU immediately goes idle. Due to HW coordination the P state request
on the idle CPU will drag all cores to MAX P state until the load is
reevaluated when to core goes non-idle.
Reported-by: Patrick Marlier <[email protected]>
Signed-off-by: Dirk Brandewie <[email protected]>
Cc: 3.14+ <[email protected]> # 3.14+
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions