On 02/18/2015 09:13 PM, Steven Rostedt wrote:
>> Here the same thing but without cmpxchg(). _If_ after an increment the
>> value is negative then we take slowpath. Otherwise we have the lock.
>
> OK, so I need to make it so it can nest with trylock. I have to look at
> the patch again because it
On Wed, Feb 18, 2015 at 12:13 PM, Steven Rostedt wrote:
> On Wed, 18 Feb 2015 20:57:10 +0100
> Sebastian Andrzej Siewior wrote:
>
>> * Steven Rostedt | 2014-04-08 22:47:01 [-0400]:
>>
>> >From: "Steven Rostedt (Red Hat)"
>> >
>> >The readers of mainline rwsems are not allowed to nest, the rwsems
On Wed, 18 Feb 2015 20:57:10 +0100
Sebastian Andrzej Siewior wrote:
> * Steven Rostedt | 2014-04-08 22:47:01 [-0400]:
>
> >From: "Steven Rostedt (Red Hat)"
> >
> >The readers of mainline rwsems are not allowed to nest, the rwsems in the
> >PREEMPT_RT kernel should not nest either.
>
> I applie
* Steven Rostedt | 2014-04-08 22:47:01 [-0400]:
>From: "Steven Rostedt (Red Hat)"
>
>The readers of mainline rwsems are not allowed to nest, the rwsems in the
>PREEMPT_RT kernel should not nest either.
I applied this and this is the reason why cpufreq isn't working. What I
see in cpufreq is:
|
* Steven Rostedt | 2014-04-08 22:47:01 [-0400]:
>From: "Steven Rostedt (Red Hat)"
>
>The readers of mainline rwsems are not allowed to nest, the rwsems in the
>PREEMPT_RT kernel should not nest either.
>
>Signed-off-by: Steven Rostedt
Applied
Sebastian
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From: "Steven Rostedt (Red Hat)"
The readers of mainline rwsems are not allowed to nest, the rwsems in the
PREEMPT_RT kernel should not nest either.
Signed-off-by: Steven Rostedt
---
include/linux/rwsem_rt.h | 1 -
kernel/rt.c | 37 -
2 files c
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