The patch titled
cpuidle: reenable /proc/acpi/ power interface for the time being
has been added to the -mm tree. Its filename is
cpuidle-reenable-proc-acpi-power-interface-for-the-time-being.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: cpuidle: reenable /proc/acpi/ power interface for the time being
From: Venki Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
Keep /proc/acpi/processor/CPU*/power around for a while as powertop depends
on it. It will be marked deprecated and removed in future. powertop can use
cpuidle interfaces instead.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/processor_idle.c | 18 +++++++++++++++---
1 files changed, 15 insertions(+), 3 deletions(-)
diff -puN drivers/acpi/processor_idle.c~cpuidle-reenable-proc-acpi-power-interface-for-the-time-being drivers/acpi/processor_idle.c
--- a/drivers/acpi/processor_idle.c~cpuidle-reenable-proc-acpi-power-interface-for-the-time-being
+++ a/drivers/acpi/processor_idle.c
@@ -804,7 +804,7 @@ int acpi_processor_power_exit(struct acp
* @t1: the start time
* @t2: the end time
*/
-static inline u32 ticks_elapsed(u32 t1, u32 t2)
+static inline u32 ticks_elapsed_in_us(u32 t1, u32 t2)
{
if (t2 >= t1)
return PM_TIMER_TICKS_TO_US(t2 - t1);
@@ -814,6 +814,16 @@ static inline u32 ticks_elapsed(u32 t1,
return PM_TIMER_TICKS_TO_US((0xFFFFFFFF - t1) + t2);
}
+static inline u32 ticks_elapsed(u32 t1, u32 t2)
+{
+ if (t2 >= t1)
+ return (t2 - t1);
+ else if (!(acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER))
+ return (((0x00FFFFFF - t1) + t2) & 0x00FFFFFF);
+ else
+ return ((0xFFFFFFFF - t1) + t2);
+}
+
/**
* acpi_idle_update_bm_rld - updates the BM_RLD bit depending on target state
* @pr: the processor
@@ -937,7 +947,8 @@ static int acpi_idle_enter_c2(struct cpu
cx->usage++;
acpi_state_timer_broadcast(pr, cx, 0);
- return ticks_elapsed(t1, t2);
+ cx->time += ticks_elapsed(t1, t2);
+ return ticks_elapsed_in_us(t1, t2);
}
static int c3_cpu_count;
@@ -1021,7 +1032,8 @@ static int acpi_idle_enter_c3(struct cpu
cx->usage++;
acpi_state_timer_broadcast(pr, cx, 0);
- return ticks_elapsed(t1, t2);
+ cx->time += ticks_elapsed(t1, t2);
+ return ticks_elapsed_in_us(t1, t2);
}
/**
_
Patches currently in -mm which might be from venkatesh.pallipadi@xxxxxxxxx are
git-acpi.patch
cpuidle-menu-governor-and-hrtimer-compile-fix.patch
cpuidle-reenable-proc-acpi-power-interface-for-the-time-being.patch
cpuidle-fix-the-uninitialized-variable-in-sysfs-routine.patch
cpuidle-menu-governor-change-the-early-break-condition.patch
cpuidle-make-cpuidle-sysfs-driver-governor-switch-off-by-default.patch
cpuidle-add-rating-to-the-governors-and-pick-the-one-with-highest-rating-by-default.patch
cpuidle-first-round-of-documentation-updates.patch
git-acpi-add-exports.patch
git-cpufreq.patch
make-usb-autosuspend-timer-1-sec-jiffy-aligned.patch
round_jiffies-for-i386-and-x86-64-non-critical-corrected-mce-polling.patch
add-a-flag-to-indicate-deferrable-timers-in-proc-timer_stats.patch
-
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