Thread (2 messages) flat view 2 messages, 2 authors, 2012-08-05

[PATCH] ARM: Don't enable GENERIC_LOCKBREAK with ticket spinlocks

From: Will Deacon <hidden>
Date: 2012-08-05 13:20:13
Also in: lkml

On Fri, Aug 03, 2012 at 11:42:42PM +0100, Stephen Boyd wrote:
Now that ARM has implemented its spinlocks with tickets we don't
need to use the generic lockbreak algorithm. Remove the Kconfig
from ARM so that we use the arch_spin_is_contended() definition
from the asm header. This also saves a word in each lock because
we don't need the break_lock member anymore.

Signed-off-by: Stephen Boyd <redacted>
---

It seems we define the arch_spin_is_contended() macro but we don't
use it on SMP && PREEMPT kernels?
Thanks, I missed that.

Acked-by: Will Deacon <redacted>

Will
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