Re: Difference wait_event_interruptible and interruptible_wait_on

[Hendrik Wiese <7.e.Q@syncro-community.de>]

Davide Rossetti wrote:

> Hendrik Wiese wrote:
>
>> Hello,
>>
>> I'm porting a device driver from 2.2.14 to 2.6.7 and I got some 
>> problems doing this...
>>
>> one of them is the following:
>> I know that a call to interruptible_wait_on puts a process into sleep 
>> state and that wait_event_interruptible does the same. But the 
>> difference is that wait_event_interruptible needs a condition to pass 
>> to wake up the processes. I do not need that mechanism since I wake 
>> up the processes at other places inside my driver with 
>> wake_up_interruptible calls. So how do I get a function similar to 
>> interruptible_wait_on where no condition is needed using kernel 2.6?
>
>
> I did not check, so maybe I'm wrong, anyway the condition 
> wait_event_interruptible is used to avoid the race window between the 
> time you decide to call it and the time the process is actually made 
> to sleep and ready to be woken up.
> regards
>
>
Thanks for your reply.

So what should such a condition be? What should be put there?