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PM / devfreq: bw_hwmon: Add bw_hwmon_meas and bw_hwmon_update trace points

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Add trace points to log the measurements and the final decision made by the
bw_hwmon governor.

Change-Id: I834bec340f81f02fcccbd6d7568a301dc74dded5
Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
This commit is contained in:
Saravana Kannan 2015-02-12 17:39:09 -08:00 • committed by David Keitel
parent f2c14b8070
commit 00c3797070
1 changed files with 11 additions and 1 deletions
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12
drivers/devfreq/governor_bw_hwmon.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -28,6 +28,7 @@
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/devfreq.h>
#include <trace/events/power.h>
#include "governor.h"
#include "governor_bw_hwmon.h"
@ -118,6 +119,10 @@ static unsigned long measure_bw_and_set_irq(struct hwmon_node *node)
preempt_enable();
dev_dbg(hw->df->dev.parent, "BW MBps = %6lu, period = %u\n", mbps, us);
trace_bw_hwmon_meas(dev_name(hw->df->dev.parent),
mbps,
us,
0);
return mbps;
}
@ -141,6 +146,11 @@ static void compute_bw(struct hwmon_node *node, int mbps,
if (ab)
*ab = roundup(new_bw, node->bw_step);
*freq = (new_bw * 100) / node->io_percent;
trace_bw_hwmon_update(dev_name(node->hw->df->dev.parent),
new_bw,
*freq,
0,
0);
}
static struct hwmon_node *find_hwmon_node(struct devfreq *df)