On Thu, Jul 4, 2013 at 1:55 PM, Raj Ravi <mekaviraj@xxxxxxxxx> wrote: > Hi, > > Please let me know the difference between > local_irq_save and raw_local_irq_save ? did you check who calls this raw_local_irq_save? similarly who calls local_irq_save? finding out these will answer your questions > At which situation one should use raw_local_irq_save? > > > Also, I read "flags" is where interrupt state is saved while disabling > interrupts in local cpu (for local_irq_save). > > What EXACTLY this flags contains? What do you mean by interrupt state > here? interrupt state meaning: which all interrupts are enabled or disabled at this instant.If a particular interrupt was enabled at that instant then we don't do any thing with our locking mechanism which causes it be be disabled. What we are doing with those flags is nothing but maintaining the state. > > Thanks! > Kavi > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
