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From 6a91406ee4a03844ef1dd7b9db4f4d52eee9047d Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 30 Mar 2016 17:23:15 +0100
Subject: [PATCH] cpufreq: Temporarily ignore io_is_busy=1
To speed testing of the new sdhost driver that adapts to changes in
core_freq, hack the on-demand governor to treat io_is_busy=1 as
io_is_busy=0. The io_is_busy feature can still be forced using
io_is_busy=2.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/cpufreq/cpufreq_ondemand.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -307,7 +307,12 @@ static ssize_t store_io_is_busy(struct d
ret = sscanf(buf, "%u", &input);
if (ret != 1)
return -EINVAL;
- od_tuners->io_is_busy = !!input;
+ // XXX temporary hack
+ if (input > 1)
+ input = 1;
+ else
+ input = 0;
+ od_tuners->io_is_busy = input;
/* we need to re-evaluate prev_cpu_idle */
for_each_online_cpu(j) {
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