[0/2] uclamp_max vs schedutil fixes

Message

Qais Yousef Dec. 16, 2021, 10:53 p.m. UTC

On systems that use sugov_update_single_{freq, perf}(), uclamp_max was
ineffective because of 'busy' filter which ignores requests to change frequency
if there's no idle time. A condition that is not true if uclamp is being used
on this system.

Similarly, io heavy tasks that are capped by uclamp_max can still obtain higher
frequencies because sugov_iowait_apply() doesn't clamp the boost with
uclamp_rq_util_with().

Patches 1 and 2 address these 2 problems.

Thanks!

--
Qais Yousef

Qais Yousef (2):
  sched/sugov: Ignore 'busy' filter when uclamp_is_used()
  sched/uclamp: Fix iowait boost escaping uclamp restriction

 kernel/sched/cpufreq_schedutil.c |  11 ++-
 kernel/sched/sched.h             | 139 +++++++++++++++++--------------
 2 files changed, 87 insertions(+), 63 deletions(-)