[PATCH v3 0/5] GRUB reclaiming fixes

[Vineeth Pillai]

Current reclaim calculation for GRUB is a bit inaccurate and the
inaccuracy gets larger as the bandwidth of tasks becomes smaller.

There are couple of issues with the existing implementation:
 - Loss of precision in division due to rounding off.
 - Minor bug in the reclaim calculation.
 - In SMP, tasks with smaller reservation tend to reclaim less
   even if its the only task on a cpu.
 - Inaccuracy when normal deadline tasks and SCHED_FLAG_RECLAIM
   tasks share the cpu.

This patch series aims to fix the above mentioned issues.

Changes in v3
-------------
1. Split the fixes into multiple self contained patches
2. Cover letter.

Vineeth Pillai (5):
  sched/deadline: Fix bandwidth reclaim equation in GRUB
  sched/deadline: Fix reclaim inaccuracy with SMP
  sched/deadline: Remove unused variable extra_bw
  sched/deadline: Account for normal deadline tasks in GRUB
  Documentation: sched/deadline: Update GRUB description

 Documentation/scheduler/sched-deadline.rst |  28 ++--
 kernel/sched/deadline.c                    | 160 ++++++++++-----------
 kernel/sched/sched.h                       |  18 ++-
 3 files changed, 112 insertions(+), 94 deletions(-)

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2.40.1