Messages in this thread | | | Date | Thu, 13 Aug 2015 16:54:47 +0200 | From | Thierry Reding <> | Subject | Re: [PATCH v3] ARM: tegra: cpuidle: implement cpuidle_state.enter_freeze() |
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On Tue, May 19, 2015 at 04:49:12PM +0200, Tomeu Vizoso wrote: > This callback is expected to do the same as enter() but it has to > guarantee that interrupts aren't enabled at any point in its execution, > as the tick is frozen. > > It will be called when the system goes to suspend-to-idle and will > reduce power usage because CPUs won't be awaken for unnecessary IRQs. > > By setting the CPUIDLE_FLAG_TIMER_STOP flag, we can reuse the same code > for both the enter() and enter_freeze() callbacks. > > Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> > Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > --- > > v3: * Set CPUIDLE_FLAG_TIMER_STOP to simplify things as suggested by > Lorenzo Pieralisi > v2: * Disable FIQs also when suspending-to-idle > --- > arch/arm/mach-tegra/cpuidle-tegra114.c | 13 +++++++++---- > 1 file changed, 9 insertions(+), 4 deletions(-)
Applied, thanks.
Thierry [unhandled content-type:application/pgp-signature] | |