Update cpuidle tool to display the residency value of cpuidle
states. This addition provides a clearer and more detailed view
of idle state information when using cpuidle-info.
--------------------------------
Before Patch:
--------------------------------
$ cpupower idle-info
CPUidle driver: intel_idle
CPUidle governor: menu
analyzing CPU 28:
Number of idle states: 3
Available idle states: POLL C1 C1E
POLL:
Flags/Description: CPUIDLE CORE POLL IDLE
Latency: 0
Usage: 7448
Duration: 207170
C1:
Flags/Description: MWAIT 0x00
Latency: 2
Usage: 7023
Duration: 3736853
C1E:
Flags/Description: MWAIT 0x01
Latency: 10
Usage: 18468
Duration: 11396212
--------------------------------
After Patch:
--------------------------------
$ cpupower idle-info
CPUidle driver: intel_idle
CPUidle governor: menu
analyzing CPU 12:
Number of idle states: 3
Available idle states: POLL C1 C1E
POLL:
Flags/Description: CPUIDLE CORE POLL IDLE
Latency: 0
Residency: 0
Usage: 1950
Duration: 38458
C1:
Flags/Description: MWAIT 0x00
Latency: 2
Residency: 2
Usage: 10688
Duration: 7133020
C1E:
Flags/Description: MWAIT 0x01
Latency: 10
Residency: 20
Usage: 22356
Duration: 15687259
--------------------------------
Signed-off-by: Aboorva Devarajan <aboorvad@xxxxxxxxxxxxx>
---
tools/power/cpupower/lib/cpuidle.c | 8 ++++++++
tools/power/cpupower/lib/cpuidle.h | 2 ++
tools/power/cpupower/utils/cpuidle-info.c | 4 ++++
3 files changed, 14 insertions(+)