| Age | Commit message (Collapse) | Author |
|---|
|
4096 will not fit into the immediate field of a compare instruction,
in fact it will end up being -4096 causing the check to fail every
time and thus disabling backoff.
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
It can't be just empty, it has to at least branch
back to 'label'.
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
When the cpu count is high and contention hits an atomic object, the
processors can synchronize such that some cpus continually get knocked
out and cannot complete the atomic update.
So implement an exponential backoff when SMP.
Signed-off-by: David S. Miller <davem@davemloft.net>
|
