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Message-Id: <1445967059-6897-14-git-send-email-czoborbalint@gmail.com>
Date: Tue, 27 Oct 2015 18:30:02 +0100
From: Bálint Czobor <czoborbalint@...il.com>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>,
Viresh Kumar <viresh.kumar@...aro.org>
Cc: linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
Todd Poynor <toddpoynor@...gle.com>,
Bálint Czobor <czoborbalint@...il.com>
Subject: [PATCH 14/70] cpufreq: interactive: add boost pulse interface
From: Todd Poynor <toddpoynor@...gle.com>
Change-Id: Icf1e86d2065cc8f0816ba9c6b065eb056d4e8249
Signed-off-by: Todd Poynor <toddpoynor@...gle.com>
Signed-off-by: Bálint Czobor <czoborbalint@...il.com>
---
Documentation/cpu-freq/governors.txt | 9 ++++++--
drivers/cpufreq/cpufreq_interactive.c | 32 +++++++++++++++++++++++-----
include/trace/events/cpufreq_interactive.h | 20 ++++++++---------
3 files changed, 44 insertions(+), 17 deletions(-)
diff --git a/Documentation/cpu-freq/governors.txt b/Documentation/cpu-freq/governors.txt
index 4fcaa43..509b179 100644
--- a/Documentation/cpu-freq/governors.txt
+++ b/Documentation/cpu-freq/governors.txt
@@ -267,8 +267,13 @@ not idle. Default is 20000 uS.
input_boost: If non-zero, boost speed of all CPUs to hispeed_freq on
touchscreen activity. Default is 0.
-boost: If non-zero, immediately boost speed of all CPUs to
-hispeed_freq. If zero, allow CPU speeds to drop below hispeed_freq.
+boost: If non-zero, immediately boost speed of all CPUs to at least
+hispeed_freq until zero is written to this attribute. If zero, allow
+CPU speeds to drop below hispeed_freq according to load as usual.
+
+boostpulse: Immediately boost speed of all CPUs to hispeed_freq for
+min_sample_time, after which speeds are allowed to drop below
+hispeed_freq according to load as usual.
3. The Governor Interface in the CPUfreq Core
diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c
index fcd5b1d..fcf0f21 100644
--- a/drivers/cpufreq/cpufreq_interactive.c
+++ b/drivers/cpufreq/cpufreq_interactive.c
@@ -495,7 +495,6 @@ static void cpufreq_interactive_boost(void)
unsigned long flags;
struct cpufreq_interactive_cpuinfo *pcpu;
- trace_cpufreq_interactive_boost(hispeed_freq);
spin_lock_irqsave(&up_cpumask_lock, flags);
for_each_online_cpu(i) {
@@ -534,8 +533,10 @@ static void cpufreq_interactive_input_event(struct input_handle *handle,
unsigned int type,
unsigned int code, int value)
{
- if (input_boost_val && type == EV_SYN && code == SYN_REPORT)
+ if (input_boost_val && type == EV_SYN && code == SYN_REPORT) {
+ trace_cpufreq_interactive_boost("input");
cpufreq_interactive_boost();
+ }
}
static void cpufreq_interactive_input_open(struct work_struct *w)
@@ -763,16 +764,36 @@ static ssize_t store_boost(struct kobject *kobj, struct attribute *attr,
boost_val = val;
- if (boost_val)
+ if (boost_val) {
+ trace_cpufreq_interactive_boost("on");
cpufreq_interactive_boost();
- else
- trace_cpufreq_interactive_unboost(hispeed_freq);
+ } else {
+ trace_cpufreq_interactive_unboost("off");
+ }
return count;
}
define_one_global_rw(boost);
+static ssize_t store_boostpulse(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ unsigned long val;
+
+ ret = kstrtoul(buf, 0, &val);
+ if (ret < 0)
+ return ret;
+
+ trace_cpufreq_interactive_boost("pulse");
+ cpufreq_interactive_boost();
+ return count;
+}
+
+static struct global_attr boostpulse =
+ __ATTR(boostpulse, 0200, NULL, store_boostpulse);
+
static struct attribute *interactive_attributes[] = {
&hispeed_freq_attr.attr,
&go_hispeed_load_attr.attr,
@@ -781,6 +802,7 @@ static struct attribute *interactive_attributes[] = {
&timer_rate_attr.attr,
&input_boost.attr,
&boost.attr,
+ &boostpulse.attr,
NULL,
};
diff --git a/include/trace/events/cpufreq_interactive.h b/include/trace/events/cpufreq_interactive.h
index ae6f232..0791f27 100644
--- a/include/trace/events/cpufreq_interactive.h
+++ b/include/trace/events/cpufreq_interactive.h
@@ -83,27 +83,27 @@ DEFINE_EVENT(loadeval, cpufreq_interactive_notyet,
);
TRACE_EVENT(cpufreq_interactive_boost,
- TP_PROTO(unsigned long freq),
- TP_ARGS(freq),
+ TP_PROTO(char *s),
+ TP_ARGS(s),
TP_STRUCT__entry(
- __field(unsigned long, freq)
+ __field(char *, s)
),
TP_fast_assign(
- __entry->freq = freq;
+ __entry->s = s;
),
- TP_printk("freq=%lu", __entry->freq)
+ TP_printk("%s", __entry->s)
);
TRACE_EVENT(cpufreq_interactive_unboost,
- TP_PROTO(unsigned long freq),
- TP_ARGS(freq),
+ TP_PROTO(char *s),
+ TP_ARGS(s),
TP_STRUCT__entry(
- __field(unsigned long, freq)
+ __field(char *, s)
),
TP_fast_assign(
- __entry->freq = freq;
+ __entry->s = s;
),
- TP_printk("freq=%lu", __entry->freq)
+ TP_printk("%s", __entry->s)
);
#endif /* _TRACE_CPUFREQ_INTERACTIVE_H */
--
1.7.9.5
--
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