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path: root/drivers/cpuidle/governors/haltpoll.c
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Diffstat (limited to 'drivers/cpuidle/governors/haltpoll.c')
-rw-r--r--drivers/cpuidle/governors/haltpoll.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/cpuidle/governors/haltpoll.c b/drivers/cpuidle/governors/haltpoll.c
index 1dff3a5291..663b7f164d 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;
}