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@@ -39,16 +39,16 @@ power = {'source': None, 'method': 'polling'}
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def writemsr(msr, val):
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- n = ['/dev/cpu/{:d}/msr'.format(x) for x in range(cpu_count())]
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- if not os.path.exists(n[0]):
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+ msr_list = ['/dev/cpu/{:d}/msr'.format(x) for x in range(cpu_count())]
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+ if not os.path.exists(msr_list[0]):
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try:
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subprocess.check_call(('modprobe', 'msr'))
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except subprocess.CalledProcessError:
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print('[E] Unable to load the msr module.')
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sys.exit(1)
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try:
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- for c in n:
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- f = os.open(c, os.O_WRONLY)
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+ for addr in msr_list:
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+ f = os.open(addr, os.O_WRONLY)
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os.lseek(f, msr, os.SEEK_SET)
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os.write(f, struct.pack('Q', val))
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os.close(f)
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@@ -59,21 +59,22 @@ def writemsr(msr, val):
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else:
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raise e
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+
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# returns the value between from_bit and to_bit as unsigned long
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-def readmsr(msr, from_bit = 0, to_bit = 63):
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+def readmsr(msr, from_bit=0, to_bit=63):
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if from_bit > to_bit:
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- print('wrong readmsr bit params')
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+ print('[E] Wrong readmsr bit params')
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sys.exit(1)
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- n = ['/dev/cpu/{:d}/msr'.format(x) for x in range(cpu_count())]
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- if not os.path.exists(n[0]):
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+ msr_list = ['/dev/cpu/{:d}/msr'.format(x) for x in range(cpu_count())]
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+ if not os.path.exists(msr_list[0]):
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try:
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subprocess.check_call(('modprobe', 'msr'))
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except subprocess.CalledProcessError:
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print('[E] Unable to load the msr module.')
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sys.exit(1)
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try:
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- for c in n:
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- f = os.open(c, os.O_RDONLY)
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+ for addr in msr_list:
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+ f = os.open(addr, os.O_RDONLY)
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os.lseek(f, msr, os.SEEK_SET)
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val = struct.unpack('Q', os.read(f, 8))[0]
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os.close(f)
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@@ -93,8 +94,8 @@ def is_on_battery():
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def calc_time_window_vars(t):
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- # 0.000977 is the time unit of this CPU
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- time_unit = 1.0/2**readmsr(0x606, 16, 19)
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+ # 0.000977 is the time unit of my CPU
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+ time_unit = 1.0 / 2**readmsr(0x606, 16, 19)
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for Y in range(2**5):
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for Z in range(2**2):
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if t <= (2**Y) * (1. + Z / 4.) * time_unit:
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@@ -155,8 +156,8 @@ def calc_reg_values(config):
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trip_offset = int(round(100 - config.getfloat(power_source, 'Trip_Temp_C')))
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regs[power_source]['MSR_TEMPERATURE_TARGET'] = trip_offset << 24
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- # 0.125 is the power unit of this CPU
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- power_unit = 1.0/2**readmsr(0x606, 0, 3)
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+ # 0.125 is the power unit of my CPU
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+ power_unit = 1.0 / 2**readmsr(0x606, 0, 3)
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PL1 = int(round(config.getfloat(power_source, 'PL1_Tdp_W') / power_unit))
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Y, Z = calc_time_window_vars(config.getfloat(power_source, 'PL1_Duration_s'))
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TW1 = Y | (Z << 5)
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@@ -196,7 +197,7 @@ def power_thread(config, regs, exit_event):
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sys.exit(1)
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while not exit_event.is_set():
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- #
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+ # switch back to sysfs polling
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if power['method'] == 'polling':
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power['source'] = 'BATTERY' if is_on_battery() else 'AC'
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erpalma