Hello,
Seeking advice on two separate issues. One of them may be just the
documentation.
Setup is:
Building via buildroot
[Xenomai] Cobalt v3.0.10 is running over qemu with 2 CPUs.
Linux version 4.14.111.
bootargs: isolcpus=1 processor.max_cstate=0
intel_idle.max_cstate=0 nosoftlockup=0 rcu_nocbs=1 irqaffinity=0 tsc=reliable
.....
Issue 1\ Latency setting:
Referring to
https://xenomai.org/documentation/xenomai-3/html/man1/autotune/index.html
-enabling CONFIG_XENO_OPT_AUTOTUNE does create entry as '/dev/rtdm/autotune' in
target.
-setting XENO_OPT_TIMING_SCHEDLAT does NOT reflect in
'/proc/xenomai/clock/coreclk'
-enabling BR2_PACKAGE_XENOMAI_ANALOGY does build autotune application, but
running it on target also does NOT reflect XENO_OPT_TIMING_SCHEDLAT setting in
'/proc/xenomai/clock/coreclk'
Is my expectation correct that statically defined gravity values should reflect
in coreclk?
-If so, how could it be achieved?
-If not, then how to verify if the values are set/used correctly?
Issue 2\ CPU cores distribution:
If bootargs have both ("isolcpus=1 maxcpus=1"), ie:
isolcpus=1 maxcpus=1 processor.max_cstate=0
intel_idle.max_cstate=0 nosoftlockup=0 rcu_nocbs=1 irqaffinity=0 tsc=reliable
.....
Then i get a boot time crash. [Could not collect the log, but crash indicate
somewhere in i-pipe]
Idea behind this is to force Linux to use 1st CPU, there by leaving 2nd CPU
dedicated for Xenomai. Either of the entry alone works (but not together).
[Also tried xenomai.supported_cpus=0x02 without success].
Any advice whether it is feasible to boot Xenomai with both these bootargs on
my setup?
If so, where i could look into for bootup crash?
Regards
Neeraj
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