[ECOS] how does the scheduler lock works when the DSR is interrupted by ext IRQ?

[Qiang Huang]

Hi all:
   I can't understand how the **scheduler lock** works when DSR interrupted
by ext IRQ and resumes execution?

assert ext_IRQ1--> run ISR1( ) --> finish ISR1( ) --> interrupt_end() -->
post DSR --> unlock scheduler  --> run DSR1( ) --> assert ext_IRQ2 --> run
ISR2( ) --> finish ISR2( ) --> interrupt_end() --> post DSR --> how does the
scheduler lock works to ensure the DSR2( ) is not run here and only runs
after DSR1( ) finished?

BTW Is there anywhere I can find some *more detail* about the kernel
handling mechanism?(any docs?)

Thanks a lot.



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