Sorry, missed to included a minor change. Sending updated patch in next mail.
Best regards, Sanjeev > -----Original Message----- > From: Premi, Sanjeev > Sent: Sunday, March 08, 2009 12:44 AM > To: [email protected] > Cc: Premi, Sanjeev > Subject: [PATCH] PM : cpuidle - Update statistics for correct state > > When 'enable_off_mode' is 0, and (mpu_state < > PWRDM_POWER_RET) the local variables mpu_state and core_state > are modified; but the usage count for the original state > selected by the governor are updated. > > This patch updates the 'last_state' in the cpuidle driver to > ensure that statistics for the correct state are updated. > > Signed-off-by: Sanjeev Premi <[email protected]> > --- > arch/arm/mach-omap2/cpuidle34xx.c | 25 +++++++++++++++++-------- > 1 files changed, 17 insertions(+), 8 deletions(-) > > diff --git a/arch/arm/mach-omap2/cpuidle34xx.c > b/arch/arm/mach-omap2/cpuidle34xx.c > index 62fbb2e..5838838 100644 > --- a/arch/arm/mach-omap2/cpuidle34xx.c > +++ b/arch/arm/mach-omap2/cpuidle34xx.c > @@ -76,23 +76,32 @@ static int omap3_enter_idle(struct > cpuidle_device *dev, { > struct omap3_processor_cx *cx = cpuidle_get_statedata(state); > struct timespec ts_preidle, ts_postidle, ts_idle; > - u32 mpu_state = cx->mpu_state, core_state = cx->core_state; > + u32 mpu_state, core_state; > > current_cx_state = *cx; > > /* Used to keep track of the total time in idle */ > getnstimeofday(&ts_preidle); > > - local_irq_disable(); > - local_fiq_disable(); > - > + /* > + * Adjust the idle state (if required). > + * Also, ensure that usage statistics of correct state > are updated. > + */ > if (!enable_off_mode) { > - if (mpu_state < PWRDM_POWER_RET) > - mpu_state = PWRDM_POWER_RET; > - if (core_state < PWRDM_POWER_RET) > - core_state = PWRDM_POWER_RET; > + if (cx->type > OMAP3_STATE_C4) { > + state = &(dev->states[OMAP3_STATE_C4 - 1]); > + dev->last_state = state ; > + > + cx = cpuidle_get_statedata(state); > + } > } > > + mpu_state = cx->mpu_state; > + core_state = cx->core_state; > + > + local_irq_disable(); > + local_fiq_disable(); > + > pwrdm_set_next_pwrst(mpu_pd, mpu_state); > pwrdm_set_next_pwrst(core_pd, core_state); > > -- > 1.5.6 > > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
