Re: [rtl] marking critical regions

[yodaiken@fsmlabs.com]

On Tue, Aug 03, 1999 at 08:50:28AM +0530, BPL Telecom wrote:
> Hi,
>     We wanted to mark critical regions in our real time
> application. we used rtl_no_interrupts(long) and
> rtl_restore_interrupts(long), but if we call only
> rtl_no_interrupts(long) and not call
> rtl_restore_interrupts(long) (for testing) the system continues to work
> normally.

That's because you are calling rtl_no_interrupts in regions where interrupts
are already disabled. Interrupt handlers are called this way and you
need to turn on interrupts explicilty is that is what you want.

> We donot know whether interrupts are really getting disabled.
> We want to know whether the functions used by us are
> correct. We also want to know how the variable passed to
> the rtl_no_interrupts and rtl_restore_interrupts are used.

The variable saves the current interrupt state in rtl_no_interrupts
and restores it in the restore_interrupts.

> 
> We also want ot know whether there is any debugger
> for debugging loadable modules.
> 

See http://www.zentropix.com for a debugger (I have no connection with 
Zentropix and have not used their debugger).


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