···

       
80
       
80
       
 
       


     

       
81
       
81
       
 
       
      # Enable lazy RCUs for power savings:

     

       
82
       
82
       
 
       
      # https://lore.kernel.org/rcu/20221019225138.GA2499943@paulmck-ThinkPad-P17-Gen-1/

     

       
83
       
83
       
-
       
      RCU_LAZY                         = whenAtLeast "6.2" yes;

     

       
83
       
83
       
+
       
      # RCU_LAZY depends on RCU_NOCB_CPU depends on NO_HZ_FULL

     

       
84
       
84
       
+
       
      # depends on HAVE_VIRT_CPU_ACCOUNTING_GEN depends on 64BIT,

     

       
85
       
85
       
+
       
      # so we can't force-enable this

     

       
86
       
86
       
+
       
      RCU_LAZY                         = whenAtLeast "6.2" (option yes);

     

       
84
       
87
       
 
       
    } // optionalAttrs (stdenv.hostPlatform.isx86) {

     

       
85
       
88
       
 
       
      INTEL_IDLE                       = yes;

     

       
86
       
89
       
 
       
      INTEL_RAPL                       = whenAtLeast "5.3" module;

     
···

       
128
       
131
       
 
       


     

       
129
       
132
       
 
       
    timer = {

     

       
130
       
133
       
 
       
      # Enable Full Dynticks System.

     

       
131
       
131
       
-
       
      NO_HZ_FULL = mkIf stdenv.is64bit yes; # TODO: more precise condition?

     

       
134
       
134
       
+
       
      # NO_HZ_FULL depends on HAVE_VIRT_CPU_ACCOUNTING_GEN depends on 64BIT

     

       
135
       
135
       
+
       
      NO_HZ_FULL = mkIf stdenv.is64bit yes;

     

       
132
       
136
       
 
       
    };

     

       
133
       
137
       
 
       


     

       
134
       
138
       
 
       
    # Enable NUMA.