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| author |   Paul Turner <pjt@google.com> | 2011-01-21 20:44:59 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2011-01-26 12:31:01 +0100 |
| commit | e37b6a7b27b400c3aa488db8c6629a05095bc79c (patch) | |
| tree | b27ed41b74eb7e69d2e6b02cc659c4fab3ef12ef /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm (diff) | |
| download | wireguard-linux-e37b6a7b27b400c3aa488db8c6629a05095bc79c.tar.xz wireguard-linux-e37b6a7b27b400c3aa488db8c6629a05095bc79c.zip | |
sched: Fix sign under-flows in wake_affine
While care is taken around the zero-point in effective_load to not exceed
the instantaneous rq->weight, it's still possible (e.g. using wake_idx != 0)
for (load + effective_load) to underflow.
In this case the comparing the unsigned values can result in incorrect balanced
decisions.
Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20110122044851.734245014@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions