[PATCH 36/52] ACPI: acpi_pad: tune round_robin_time

Len Brown
2012-07-25T03:43:15Z

From: Len Brown <len.brown@intel.com>

In an effort to be fair to bound processes,
acpi_pad periodically moves its forced-idle threads.

The default interval for moving the threads is 10 seconds.
Measurements show that reducing this to 1 second has no
power or performance impact, so reduce default to 1 second.

Signed-off-by: Len Brown <len.brown@intel.com>
---
drivers/acpi/acpi_pad.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 1c09e1b..f3e959f 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -144,7 +144,7 @@ static void exit_round_robin(unsigned int tsk_index)
}

static unsigned int idle_pct = 5; /* percentage */
-static unsigned int round_robin_time = 10; /* second */
+static unsigned int round_robin_time = 1; /* second */
static int power_saving_thread(void *data)
{
struct sched_param param = {.sched_priority = 1};
--
1.7.12.rc0