2016-06-08 09:59:37 +00:00
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From bf137324a7f873dc90b9965398de259f5d992f9b Mon Sep 17 00:00:00 2001
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2016-04-07 19:25:10 +00:00
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 30 Mar 2016 17:23:15 +0100
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2016-06-08 09:59:37 +00:00
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Subject: [PATCH 218/381] cpufreq: Temporarily ignore io_is_busy=1
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2016-04-07 19:25:10 +00:00
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To speed testing of the new sdhost driver that adapts to changes in
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core_freq, hack the on-demand governor to treat io_is_busy=1 as
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io_is_busy=0. The io_is_busy feature can still be forced using
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io_is_busy=2.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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drivers/cpufreq/cpufreq_ondemand.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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--- a/drivers/cpufreq/cpufreq_ondemand.c
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+++ b/drivers/cpufreq/cpufreq_ondemand.c
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@@ -307,7 +307,12 @@ static ssize_t store_io_is_busy(struct d
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ret = sscanf(buf, "%u", &input);
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if (ret != 1)
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return -EINVAL;
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- od_tuners->io_is_busy = !!input;
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+ // XXX temporary hack
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+ if (input > 1)
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+ input = 1;
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+ else
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+ input = 0;
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+ od_tuners->io_is_busy = input;
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/* we need to re-evaluate prev_cpu_idle */
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for_each_online_cpu(j) {
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