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Commit 1045189e authored by Junjie Wu's avatar Junjie Wu
Browse files

cpufreq: interactive: Round up timer_rate to match jiffy 



Timers are scheduled in unit of jiffies. Round up timer_rate so that
it matches the actual sampling period.

Change-Id: I47e666f835752528331f50b1e76784e6d67f8bcf
Signed-off-by: default avatarJunjie Wu <junjiew@codeaurora.org>
parent 9aa44be6

drivers/cpufreq/cpufreq_interactive.c

+8 −2
Original line number Original line Diff line number Diff line
@@ -873,12 +873,18 @@ static ssize_t store_timer_rate(struct cpufreq_interactive_tunables *tunables, 
		const char *buf, size_t count)

		const char *buf, size_t count)

{

{

	int ret;

	int ret;

	unsigned long val;

	unsigned long val, val_round;





	ret = strict_strtoul(buf, 0, &val);

	ret = strict_strtoul(buf, 0, &val);

	if (ret < 0)

	if (ret < 0)

		return ret;

		return ret;

	tunables->timer_rate = val;



	val_round = jiffies_to_usecs(usecs_to_jiffies(val));

	if (val != val_round)

		pr_warn("timer_rate not aligned to jiffy. Rounded up to %lu\n",

			val_round);



	tunables->timer_rate = val_round;

	return count;

	return count;

}

}