diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 2 | ||||
| -rw-r--r-- | drivers/cpuidle/driver.c | 3 | ||||
| -rw-r--r-- | drivers/cpuidle/governors/haltpoll.c | 9 |
3 files changed, 10 insertions, 4 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 737a026ef58a..02e40fd7d948 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -237,7 +237,7 @@ noinstr int cpuidle_enter_state(struct cpuidle_device *dev, } if (target_state->flags & CPUIDLE_FLAG_TLB_FLUSHED) - leave_mm(dev->cpu); + leave_mm(); /* Take note of the planned idle state. */ sched_idle_set_state(target_state); diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c index d9cda7f6ccb9..cf5873cc45dc 100644 --- a/drivers/cpuidle/driver.c +++ b/drivers/cpuidle/driver.c @@ -16,6 +16,7 @@ #include <linux/cpumask.h> #include <linux/tick.h> #include <linux/cpu.h> +#include <linux/math64.h> #include "cpuidle.h" @@ -187,7 +188,7 @@ static void __cpuidle_driver_init(struct cpuidle_driver *drv) s->target_residency = div_u64(s->target_residency_ns, NSEC_PER_USEC); if (s->exit_latency > 0) - s->exit_latency_ns = s->exit_latency * NSEC_PER_USEC; + s->exit_latency_ns = mul_u32_u32(s->exit_latency, NSEC_PER_USEC); else if (s->exit_latency_ns < 0) s->exit_latency_ns = 0; else diff --git a/drivers/cpuidle/governors/haltpoll.c b/drivers/cpuidle/governors/haltpoll.c index 1dff3a52917d..663b7f164d20 100644 --- a/drivers/cpuidle/governors/haltpoll.c +++ b/drivers/cpuidle/governors/haltpoll.c @@ -98,10 +98,15 @@ static void adjust_poll_limit(struct cpuidle_device *dev, u64 block_ns) unsigned int shrink = guest_halt_poll_shrink; val = dev->poll_limit_ns; - if (shrink == 0) + if (shrink == 0) { val = 0; - else + } else { val /= shrink; + /* Reset value to 0 if shrunk below grow_start */ + if (val < guest_halt_poll_grow_start) + val = 0; + } + trace_guest_halt_poll_ns_shrink(val, dev->poll_limit_ns); dev->poll_limit_ns = val; } |