Commit fdbc9c39 authored by Kent Overstreet's avatar Kent Overstreet
Browse files

bcachefs: bch2_time_stats_reset() 



Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent b36f679c

fs/bcachefs/sysfs.c

+8 −1
Original line number Diff line number Diff line
@@ -233,7 +233,7 @@ write_attribute(perf_test); 


#define x(_name)						\

	static struct attribute sysfs_time_stat_##_name =		\

		{ .name = #_name, .mode = 0444 };

		{ .name = #_name, .mode = 0644 };

	BCH_TIME_STATS()

#undef x
@@ -722,6 +722,13 @@ SHOW(bch2_fs_time_stats) 


STORE(bch2_fs_time_stats)

{

	struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats);



#define x(name)								\

	if (attr == &sysfs_time_stat_##name)				\

		bch2_time_stats_reset(&c->times[BCH_TIME_##name]);

	BCH_TIME_STATS()

#undef x

	return size;

}

SYSFS_OPS(bch2_fs_time_stats);

fs/bcachefs/time_stats.c

+14 −0
Original line number Diff line number Diff line
@@ -151,6 +151,20 @@ void __bch2_time_stats_update(struct bch2_time_stats *stats, u64 start, u64 end) 
	}

}



void bch2_time_stats_reset(struct bch2_time_stats *stats)

{

	spin_lock_irq(&stats->lock);

	unsigned offset = offsetof(struct bch2_time_stats, min_duration);

	memset((void *) stats + offset, 0, sizeof(*stats) - offset);



	if (stats->buffer) {

		int cpu;

		for_each_possible_cpu(cpu)

			per_cpu_ptr(stats->buffer, cpu)->nr = 0;

	}

	spin_unlock_irq(&stats->lock);

}



void bch2_time_stats_exit(struct bch2_time_stats *stats)

{

	free_percpu(stats->buffer);

fs/bcachefs/time_stats.h

+2 −1
Original line number Diff line number Diff line
@@ -70,6 +70,7 @@ struct time_stat_buffer { 
struct bch2_time_stats {

	spinlock_t	lock;

	bool		have_quantiles;

	struct time_stat_buffer __percpu *buffer;

	/* all fields are in nanoseconds */

	u64             min_duration;

	u64		max_duration;
@@ -87,7 +88,6 @@ struct bch2_time_stats { 


	struct mean_and_variance_weighted duration_stats_weighted;

	struct mean_and_variance_weighted freq_stats_weighted;

	struct time_stat_buffer __percpu *buffer;

};



struct bch2_time_stats_quantiles {
@@ -142,6 +142,7 @@ static inline bool track_event_change(struct bch2_time_stats *stats, bool v) 
	return false;

}



void bch2_time_stats_reset(struct bch2_time_stats *);

void bch2_time_stats_exit(struct bch2_time_stats *);

void bch2_time_stats_init(struct bch2_time_stats *);