RT kernel detection needs improvement

[daeavelwyn]

Hi, I juste installed the liquorix kernel (https://liquorix.net/) which is a RT kernel. But cadene doesn't recognize it as a RT one. Here is the console output : daeavelwyn@StudioCorei5 ->cat /proc/version Linux version 4.4-6.dmz.1-liquorix-amd64 (steven@liquorix.net) (gcc version 5.3.1 20160316 (Debian 5.3.1-12) ) #1 ZEN SMP PREEMPT Debian 4.4-18 (2016-03-17)

and I attach the cadence screenshot

[falkTX]

liquorix is certainly NOT a realtime kernel. 'PREEMPT' tag is there, but not the 'RT' one.

[daeavelwyn]

Ok, but cadence should mark it as a PREEMPT no ? instead of the actual icon ?

[falkTX]

what's wrong with the icon? PREEMPT doesn't make it nicer for audio realtime stuff, in some cases it might be worse. When PREEMPT is enabled, other applications (WMs, pulseaudio) will make use of it too, not just jack.

[daeavelwyn]

Ok, not sure I well understand the difference between RT / LowLatency / PREEMPT....I also tried with the AVLinux kernel and got the same behaviour. Does it mean AVLinux kernel isn't a RT one also ?

daeavelwyn@StudioCorei5 ->uname -a Linux StudioCorei5 4.0.4-rt1+ #6 SMP PREEMPT RT Sun May 24 15:21:18 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux

[falkTX]

This means the cadence kernel check is broken :P

[trebmuh]

This looks still broken with a fresh build from https://github.com/falkTX/Cadence/commit/7c6ca1026f3f4732f0a3d6f9e3d1827d6a797284 (0.9.0 version).

[trebmuh]

Looks to still be broken on 0.9.1

[neyuru]

Requested #325 to solve this issue.

[antonio-petricca]

Hi, which is the settings I should enable in order to compile a full RT kernel?