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authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2008-02-12 04:46:31 +0300
committerLen Brown <len.brown@intel.com>2008-02-14 08:09:55 +0300
commit4fcb2fcd4d0678b8ae103d257dcb28074cbfc7fa (patch)
tree54bcf486976184804c8fc786d09a04e1ce26ef99 /drivers/cpuidle/cpuidle.c
parente760e716d47b48caf98da348368fd41b4a9b9e7e (diff)
downloadlinux-4fcb2fcd4d0678b8ae103d257dcb28074cbfc7fa.tar.xz
ACPI, cpuidle: Clarify C-state description in sysfs
Add a new sysfs entry under cpuidle states. desc - can be used by driver to communicate to userspace any specific information about the state. This helps in identifying the exact hardware C-states behind the ACPI C-state definition. Idea is to export this through powertop, which will help to map the C-state reported by powertop to actual hardware C-state. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
-rw-r--r--drivers/cpuidle/cpuidle.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 60f71e6345e3..d73663a52324 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -219,7 +219,8 @@ static void poll_idle_init(struct cpuidle_device *dev)
cpuidle_set_statedata(state, NULL);
- snprintf(state->name, CPUIDLE_NAME_LEN, "C0 (poll idle)");
+ snprintf(state->name, CPUIDLE_NAME_LEN, "C0");
+ snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
state->exit_latency = 0;
state->target_residency = 0;
state->power_usage = -1;