Merge "drivers: qcom: lpm-stats: reset CPU stats from that CPU" (28732b62) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/soc/qcom/lpm-stats.c

+16 −0

Original line number	Original line	Diff line number	Diff line
	@@ -21,6 +21,7 @@
	#include <linux/debugfs.h>		#include <linux/debugfs.h>
	#include <linux/sched.h>		#include <linux/sched.h>
	#include <linux/slab.h>		#include <linux/slab.h>
			#include <linux/smp.h>
	#include <linux/suspend.h>		#include <linux/suspend.h>
	#include <soc/qcom/spm.h>		#include <soc/qcom/spm.h>
	#include <soc/qcom/pm.h>		#include <soc/qcom/pm.h>
	@@ -255,6 +256,15 @@ static ssize_t level_stats_file_write(struct file *file,
	return count;		return count;
	}		}

			static void reset_cpu_stats(void *info)
			{
			struct lpm_stats stats = &(this_cpu_ptr(&(cpu_stats)));
			int i;

			for (i = 0; i < stats->num_levels; i++)
			level_stats_reset(&stats->time_stats[i]);
			}

	static ssize_t lpm_stats_file_write(struct file *file,		static ssize_t lpm_stats_file_write(struct file *file,
	const char __user buffer, size_t count, loff_t off)		const char __user buffer, size_t count, loff_t off)
	{		{
	@@ -276,6 +286,12 @@ static ssize_t lpm_stats_file_write(struct file *file,
	return -EINVAL;		return -EINVAL;

	level_stats_reset_all(stats);		level_stats_reset_all(stats);
			/*
			* Wake up each CPU and reset the stats from that CPU,
			* for that CPU, so we could have better timestamp for
			* accounting.
			*/
			on_each_cpu(reset_cpu_stats, NULL, 1);

	return count;		return count;
	}		}