Files
linux/tools
Chen Yu aeb01e6d71 tools/power turbostat: Print the C-state Pre-wake settings
C-state pre-wake setting[1] is an optimization for some Intel CPUs to
be woken up from deep C-states in order to reduce latency. According to
the spec, the BIT30 is the C-state Pre-wake Disable. Expose this setting
accordingly.
Sample output from turbostat:
...
cpu51: MSR_IA32_POWER_CTL: 0x1a00a40059 (C1E auto-promotion: DISabled)
C-state Pre-wake: ENabled
cpu51: MSR_TURBO_RATIO_LIMIT: 0x2021212121212224
...

[1] https://intel.github.io/wult/#c-state-pre-wake

Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2021-05-04 19:10:32 -04:00
..
2020-09-04 12:46:06 +01:00