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authorZelin Tong <ztong@ludwig.cs.unc.edu>2020-10-23 00:11:54 -0400
committerZelin Tong <ztong@ludwig.cs.unc.edu>2020-10-23 00:11:54 -0400
commita33d3ad7eb411e0a250ca0d73a99b67313c4e28f (patch)
tree659ca1c3c0e1ec6df7b6bab9384ff7fddcb53d31 /mm/rmap.c
parent6bb080adebb67a15e5b9206fc390dc9338589836 (diff)
Fixed Occasional Deadlock when schedulingforbidden-zones
Problem: When multiple scheduling events occur simultaneously, a situation could happen where: - one core schedules a task that is linked to it - a check_for_preemption occurs due to another scheduling event - that task is now linked to another core - the other core tries to schedule it but can't grab the task from the runqueue of the other core Solution: Added in the scheduled_on field in gedf_reservation. This enables us in link_task_to_cpu to check for this occuring and swap the linking so the above situation doesn't happen. The code is taken and modified from link_task_to_cpu in GSN-EDF
Diffstat (limited to 'mm/rmap.c')
0 files changed, 0 insertions, 0 deletions