4 #  per-cpu tools
6 # Copyright (c) Siemens AG, 2011-2013
27         return gdb.selected_thread().num - 1
31         raise gdb.GdbError("Sorry, obtaining the current CPU is not yet "
35 def per_cpu(var_ptr, cpu):  argument
36     if cpu == -1:
37         cpu = get_current_cpu()
40             "trap_block[{0}].__per_cpu_base".format(str(cpu)))
44                 "__per_cpu_offset[{0}]".format(str(cpu)))
77     entry = -1
94         cpu = entry * bits_per_entry + bit
99         yield int(cpu)
103     for cpu in cpu_list("__cpu_online_mask"):
104         yield cpu
108     for cpu in cpu_list("__cpu_present_mask"):
109         yield cpu
113     for cpu in cpu_list("__cpu_possible_mask"):
114         yield cpu
118     for cpu in cpu_list("__cpu_active_mask"):
119         yield cpu
123     """List CPU status arrays
125 Displays the known state of each CPU based on the kernel masks
129         super(LxCpus, self).__init__("lx-cpus", gdb.COMMAND_DATA)
142     """Return per-cpu variable.
144 $lx_per_cpu("VAR"[, CPU]): Return the per-cpu variable called VAR for the
145 given CPU number. If CPU is omitted, the CPU of the current context is used.
151     def invoke(self, var, cpu=-1):  argument
152         return per_cpu(var.address, cpu).dereference()
159     """Return per-cpu pointer.
161 $lx_per_cpu_ptr("VAR"[, CPU]): Return the per-cpu pointer called VAR for the
162 given CPU number. If CPU is omitted, the CPU of the current context is used.
168     def invoke(self, var, cpu=-1):  argument
169         return per_cpu(var, cpu)
175 def get_current_task(cpu):  argument
186             return per_cpu(var_ptr, cpu).dereference()
217 $lx_current([CPU]): Return the per-cpu task variable for the given CPU
218 number. If CPU is omitted, the CPU of the current context is used."""
223     def invoke(self, cpu=-1):  argument
224         return get_current_task(cpu)