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SubjectRe: Another idea for simplifying locking in kernel/module.c
On Thu, 09 Jan 2003, Max Krasnyansky wrote:
>At 12:53 AM 1/7/2003 -0800, Adam J. Richter wrote:
>>I wrote:
>>> Here is a way to replace all of the specialized "stop CPU"
>>>locking code in kernel/module.c with an rw_semaphore by using
>>>down_read_trylock in try_module_get() and down_write when beginning to
>>>unload the module.
>>> The following UNTESTED patch, a net deletion of 136 lines,
>> I am running that patch now on two computers. It seems to
>>be OK.
>> Rusty, I'd be interested in knowing what you think of the
>>patch (likewise for other lkml readers).

>We have to be able to call try_module_get() from interrupt context.

Where? Why? Please show me one or more examples.

Adam J. Richter __ ______________ 575 Oroville Road \ / Milpitas, California 95035
+1 408 309-6081 | g g d r a s i l United States of America
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