diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle-pseries.c | 39 |
1 files changed, 7 insertions, 32 deletions
diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c index 74c247972bb3..6513ef2af66a 100644 --- a/drivers/cpuidle/cpuidle-pseries.c +++ b/drivers/cpuidle/cpuidle-pseries.c @@ -19,6 +19,7 @@ #include <asm/machdep.h> #include <asm/firmware.h> #include <asm/runlatch.h> +#include <asm/idle.h> #include <asm/plpar_wrappers.h> struct cpuidle_driver pseries_idle_driver = { @@ -31,39 +32,15 @@ static struct cpuidle_state *cpuidle_state_table __read_mostly; static u64 snooze_timeout __read_mostly; static bool snooze_timeout_en __read_mostly; -static inline void idle_loop_prolog(unsigned long *in_purr) -{ - ppc64_runlatch_off(); - *in_purr = mfspr(SPRN_PURR); - /* - * Indicate to the HV that we are idle. Now would be - * a good time to find other work to dispatch. - */ - get_lppaca()->idle = 1; -} - -static inline void idle_loop_epilog(unsigned long in_purr) -{ - u64 wait_cycles; - - wait_cycles = be64_to_cpu(get_lppaca()->wait_state_cycles); - wait_cycles += mfspr(SPRN_PURR) - in_purr; - get_lppaca()->wait_state_cycles = cpu_to_be64(wait_cycles); - get_lppaca()->idle = 0; - - ppc64_runlatch_on(); -} - static int snooze_loop(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { - unsigned long in_purr; u64 snooze_exit_time; set_thread_flag(TIF_POLLING_NRFLAG); - idle_loop_prolog(&in_purr); + pseries_idle_prolog(); local_irq_enable(); snooze_exit_time = get_tb() + snooze_timeout; @@ -87,7 +64,7 @@ static int snooze_loop(struct cpuidle_device *dev, local_irq_disable(); - idle_loop_epilog(in_purr); + pseries_idle_epilog(); return index; } @@ -113,9 +90,8 @@ static int dedicated_cede_loop(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { - unsigned long in_purr; - idle_loop_prolog(&in_purr); + pseries_idle_prolog(); get_lppaca()->donate_dedicated_cpu = 1; HMT_medium(); @@ -124,7 +100,7 @@ static int dedicated_cede_loop(struct cpuidle_device *dev, local_irq_disable(); get_lppaca()->donate_dedicated_cpu = 0; - idle_loop_epilog(in_purr); + pseries_idle_epilog(); return index; } @@ -133,9 +109,8 @@ static int shared_cede_loop(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { - unsigned long in_purr; - idle_loop_prolog(&in_purr); + pseries_idle_prolog(); /* * Yield the processor to the hypervisor. We return if @@ -147,7 +122,7 @@ static int shared_cede_loop(struct cpuidle_device *dev, check_and_cede_processor(); local_irq_disable(); - idle_loop_epilog(in_purr); + pseries_idle_epilog(); return index; } |