Messages in this thread | | | Date | Fri, 06 Mar 2009 12:44:30 -0800 | From | Darren Hart <> | Subject | Dynamically determine if kernel includes CFS Scheduler |
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I've received an internal request for a means to determine at run-time if the CFS scheduler is included in the running kernel. Looking through the git commit log and the /proc/sys/kernel filesystem, I think I see two approaches:
1) stat("/proc/sys/kernel/sched_compat_yield") This confirms 2.6.23-rc7 kernel or later which definitely has the CFS scheduler and this functionality is of interest anyway. 2) Test if the kernel version is >= 2.6.22 which is where I believe CFS landed.
Any guesses as to how robust/future-proof approach #1 would be?
-- Darren Hart IBM Linux Technology Center Real-Time Linux Team
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