On 06/11/2015 10:21 AM, Will Deacon wrote:
Hi Waiman,
On Tue, Jun 09, 2015 at 04:19:12PM +0100, Waiman Long wrote:
The qrwlock is fair in the process context, but becoming unfair when
in the interrupt context to support use cases like the tasklist_lock.
However, the unfair code in the interrupt
Hi Waiman,
On Tue, Jun 09, 2015 at 04:19:12PM +0100, Waiman Long wrote:
> The qrwlock is fair in the process context, but becoming unfair when
> in the interrupt context to support use cases like the tasklist_lock.
> However, the unfair code in the interrupt context has problem that
> may cause de
The qrwlock is fair in the process context, but becoming unfair when
in the interrupt context to support use cases like the tasklist_lock.
However, the unfair code in the interrupt context has problem that
may cause deadlock.
The fast path increments the reader count. In the interrupt context,
the
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