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authorQuentin Perret <[email protected]>2020-04-16 09:59:56 +0100
committerPeter Zijlstra <[email protected]>2020-04-22 23:10:13 +0200
commiteaf5a92ebde5bca3bb2565616115bd6d579486cd (patch)
tree2aeb36e9b491ab5f5ad9049c5abf2b7d123dab1e /tools/perf/scripts/python/export-to-sqlite.py
parentdb441bd9f630329c402d5cdd319f11bfcf509fb6 (diff)
sched/core: Fix reset-on-fork from RT with uclamp
uclamp_fork() resets the uclamp values to their default when the reset-on-fork flag is set. It also checks whether the task has a RT policy, and sets its uclamp.min to 1024 accordingly. However, during reset-on-fork, the task's policy is lowered to SCHED_NORMAL right after, hence leading to an erroneous uclamp.min setting for the new task if it was forked from RT. Fix this by removing the unnecessary check on rt_task() in uclamp_fork() as this doesn't make sense if the reset-on-fork flag is set. Fixes: 1a00d999971c ("sched/uclamp: Set default clamps for RT tasks") Reported-by: Chitti Babu Theegala <[email protected]> Signed-off-by: Quentin Perret <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Reviewed-by: Patrick Bellasi <[email protected]> Reviewed-by: Dietmar Eggemann <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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