Messages in this thread | | | From | Vincent Guittot <> | Subject | [PATCH v2 0/7] Add latency_nice priority | Date | Thu, 12 May 2022 18:35:27 +0200 |
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This patchset restarts the work about adding a latency nice priority to describe the latency tolerance of cfs tasks.
The patches [1-4] have been done by Parth: https://lore.kernel.org/lkml/20200228090755.22829-1-parth@linux.ibm.com/
I have just rebased and moved the set of latency priority outside the priority update. I have removed the reviewed tag because the patches are 2 years old.
The patches [5-7] use latency nice priority to decide if a cfs task can preempt the current running task. Patch 5 gives some tests results with cyclictests and hackbench to highlight the benefit of latency nice priority for short interactive task or long intensive tasks.
Change since v1: - fix typo - move some codes in the right patch to make bisect happy - simplify and fixed how the weight is computed - added support of sched core patch 7
Parth Shah (4): sched: Introduce latency-nice as a per-task attribute sched/core: Propagate parent task's latency requirements to the child task sched: Allow sched_{get,set}attr to change latency_nice of the task sched/core: Add permission checks for setting the latency_nice value
Vincent Guittot (3): sched/fair: Take into account latency nice at wakeup sched/fair: Add sched group latency support sched/core: support latency nice with sched core
include/linux/sched.h | 3 + include/uapi/linux/sched.h | 4 +- include/uapi/linux/sched/types.h | 19 ++++++ init/init_task.c | 1 + kernel/sched/core.c | 90 ++++++++++++++++++++++++++ kernel/sched/debug.c | 1 + kernel/sched/fair.c | 105 ++++++++++++++++++++++++++++++- kernel/sched/sched.h | 34 ++++++++++ tools/include/uapi/linux/sched.h | 4 +- 9 files changed, 257 insertions(+), 4 deletions(-)
-- 2.17.1
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