[PATCH] DRTL kernel 2.6.32-rc3 : SCHED_EDF, DI RT-Mutex, Deadline Based Interrupt Handlers

[Soumya K S]

Hello All,

We would like to present a patch on Deployment specific Real-Time
Linux, topic discussed in LinuxCon 2009
<http://events.linuxfoundation.org/lc09d17>

The developed framework allows user to specify the real-time
strategies for a specific real-time scenario. User specifies
configurations like scheduling policy, Deadline-miss Fault-tolerance
limit, interrupt priorities, etc. Real-time applications use onetime
gateway to notify kernel that they require real-time response. All
applications use existing POSIX APIs. DRTL scheduler is time-aware and
uses EDF as the scheduling policy.

The patch consists of Time aware scheduler having SCHED_EDF as the
scheduling policy, Deadline based scheduling for Interrupt handlers,
Deadline Inheritance support for RT-Mutexes.

The patch is for the kernel version 2.6.32-rc3. It has been tested on
OMAP3530, ATMEL AT91SAM9261 and X86 platforms.

We look forward for support and feedback about
DRTL <http://docs.google.com/fileview?id=0BzLQtQ1qAO7uYjYyN2QwNGUtYWE2YS00MDc1LWExYWUtZTliNjNjNmZiZTZj&hl=en>
and the patch for its feasibility, scalability and performance.

Many Thanks,
Soumya KS
Shubhro Sinha

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