gdb/linux/cpus.py

4 #  per-cpu tools
6 # Copyright (c) Siemens AG, 2011-2013
24         return gdb.selected_thread().num - 1
27         if tid > (0x100000000 - MAX_CPUS - 2):
28             return 0x100000000 - tid - 2
30             return tasks.get_thread_info(tasks.get_task_by_pid(tid))['cpu']
32         raise gdb.GdbError("Sorry, obtaining the current CPU is not yet "
36 def per_cpu(var_ptr, cpu):  argument
37     if cpu == -1:
38         cpu = get_current_cpu()
41             "trap_block[{0}].__per_cpu_base".format(str(cpu)))
45                 "__per_cpu_offset[{0}]".format(str(cpu)))
78     entry = -1
95         cpu = entry * bits_per_entry + bit
100         yield int(cpu)
104     for cpu in cpu_list("__cpu_online_mask"):
105         yield cpu
109     for cpu in cpu_list("__cpu_present_mask"):
110         yield cpu
114     for cpu in cpu_list("__cpu_possible_mask"):
115         yield cpu
119     for cpu in cpu_list("__cpu_active_mask"):
120         yield cpu
124     """List CPU status arrays
126 Displays the known state of each CPU based on the kernel masks
130         super(LxCpus, self).__init__("lx-cpus", gdb.COMMAND_DATA)
143     """Return per-cpu variable.
145 $lx_per_cpu("VAR"[, CPU]): Return the per-cpu variable called VAR for the
146 given CPU number. If CPU is omitted, the CPU of the current context is used.
152     def invoke(self, var_name, cpu=-1):  argument
154         return per_cpu(var_ptr, cpu)
163 $lx_current([CPU]): Return the per-cpu task variable for the given CPU
164 number. If CPU is omitted, the CPU of the current context is used."""
169     def invoke(self, cpu=-1):  argument
171         return per_cpu(var_ptr, cpu).dereference()