> -----Original Message----- > From: Elliott, Robert (Servers) > Sent: Wednesday, November 9, 2022 10:56 AM > > b/Documentation/admin-guide/kernel-parameters.txt > > index a465d5242774af8..2729f3ad11d108b 100644 > > --- a/Documentation/admin-guide/kernel-parameters.txt > > +++ b/Documentation/admin-guide/kernel-parameters.txt > > @@ -5082,6 +5082,12 @@ > > rcupdate.rcu_cpu_stall_timeout to be used (after > > conversion from seconds to milliseconds). > > > > + rcupdate.rcu_cpu_stall_cputime= [KNL] > > + Provide statistics on the cputime and count of > > + interrupts and tasks during the sampling period. For > > + multiple continuous RCU stalls, all sampling periods > > + begin at half of the first RCU stall timeout. > > This description should start with: > "In kernels built with CONFIG_RCU_CPU_STALL_TIME=y, " Please ignore that comment - the module parameter is always present (only subject to CONFIG_RCU_STALL_COMMON like the others). The config option is just selecting the default value for that module parameter.