hi,Do you know or anyone else knows if there any official description about the preemptive kernel from its writer--- Robert Love? On Thursday 24 June 2004 09:04, amith wrote: > hi all, > i have a basic doubt about premptive vs non - premptive > kernels . In a kernel like 2.4 which is non-premptive a while(1) ; > inside the code of my driver (for an example) would hang the system. > But a premptive kernel like 2.6 ( i dont have it ) shouldnt hang the > system, since it wud prempt and get to the next task . > if what i asssumed above is right . > when does the kernel get out of the context of the while loop (mentioned > in the example) and switch to execute another task in a premptive > kernel ? Normally on the next timer interrupt ? if , yes , then does a > non-premptive kernel check whether it is executing in kernel context > when a timer interrupt is triggered and based on whether it is in kernel > or user context switch to the next task or not ? i couldnt see or rather > find such a check being done in schedule() ,if one ever happens.. .. > hope my question was clear . > > cheers, > Amith > > > > > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
